R34_All_Workshop_Manual R34 All Workshop Manual

User Manual: R34_All_Workshop_Manual

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SERVICEMANUAL

QUICK REFERENCE INDEX

NISSAN
MODEL R 3 4 SERIES

FOREWORD
This Sewice Manual contains information concerning necessary service procedures and relevant data
for the model R34 series.
All information, illustrations and
specifications contained in this Service Manual are based on the latest
product information available at the
time of publication. If your NISSAN
model differs from the specifications
contained in this Sewice Manual,
consult your NISSAN distributor for
information.
The right is resewed to make
changes in specifications and methods at any time without notice.

0 1998 KISSAN

MOTOR CO., LTD.
Printed in Japan
A11 rights reserved. No part of this Service Manual may be reproduced or stored in a retrieval system, or transmitted in any form, or by any means,
electronic, mechanical, photocopying, recording or otherwise, without the prior written permission of Nissan Motor Company Ltd.. Tokyo, Japan.

I

HOW TO USE THIS MANUAL
b This Service Manual only contains the service data specifications and trouble diagnosis information such as self-diagnosis, CONSULT, circuit diagram and so on.
b For other information not specified in this manual, refer to Japanese version Service Manual (Pub.
No. A006029) and wiring diagram manual (Pub. No. WD8EOR34JO).

IMPORTANT SAFETY NOTICE
The proper performance of service is essential for both the safety of the technician and the efficient
functioning of the vehicle.
The service methods in this Service Manual are described in such a manner that the service may be
performed safely and accurately.
Service varies with the procedures used, the skills of the technician and the tools and parts available.
Accordingly, anyone using service procedures, took or parts which are not specifically recommended
by NISSAN must first be completely satisfied that neither personal safety nor the vehicle's safety will
be jeopardized by the service method selected.

GENERAL INFORMATION
SECTION

GI

CONTENTS
CONSULT CHECKING SYSTEM ....................................2
Function and System Application ................................ 2
Lithium Battery Replacement ......................................2
Checking Equipment.................................................... 2

IDENTIFICATION INFORMATION................................... 3
Model Variation ............................................................3
Vehicle Identification Number ...................................... 4
Vehicle Identification Plate........................................... 4

CONSULT CHECKING SYSTEM
Function and System Application
Diagnostic
test mode

Function

ENGINE

AfT

Air bag

ABS

Work support

This mode enables a technician to adjust some devices faster
and more accurately by following the indications on CONSULT.

x

-

-

-

Self-diagnostic
results

Self-diagnostic results can be read and erased quickly.

x

x

x

x

Trouble diagnostic
record

Current self-diagnostic results and all trouble diagnostic records
previously stored can be read.

X

-

-

--

ECU discriminated
No.

Classification number of a replacement ECU can be read to prevent an incorrect ECU from being installed.

-

-

X

-

Data monitor

InputIOutput data in the ECM can be read.

x

x

-

x

Active test

Diagnostic Test Mode in which CONSULT drives some actuators
apart from the ECMs and also shifts some parameters in a
specified range.

x

-

-

x

ECM part number

ECM part number can be read.

x

x

-

x

I

Function test

L

x: Applicable

I

Conducted by CONSULT instead of a technician to determine
whether each system is "OK" or 'NG".

l x H - 1 -

Lithium Battery Replacement
CONSULT contains a lithium battery. When replacing the battery obey the following:
WARNING:
Replace the lithium battery with SANYO Electric Co., Ltd., CR2032 only. Use of another battery may
present a risk of fire or explosion. The battery may present a fire or chemical burn hazard if mistreated.
Do not recharge, disassemble or dispose of in fire.
Keep the battery out of reach of children and discard used battery conforming to the local regulations.

Checking Equipment
When ordering the below equipment, contact your NlSSAN distributor.
!

Tool name
NISSAN CONSULT
@ CONSULT unit
and accessories
@ Program card
UE990: For Automatic
transmission of
Dual rnatic M-ATx
EE980: Except for Automatic transmission
of Dual matic
M-Atx

Description

IDENTIFICATION INFORMATION

Model Variation
Model
Body

Grade

Engine

RH drive

Transmission

GGKBRTFR34UDA
2-door

25GT TURBO

FS5R30A
RB25DET

GGKBRTAR34UDA

1

GGHAREARMEDA
GGKAREFRMEDA

1

RE4RO1B

Rear differential carrier

. R200V

RB20DE

RB25DE

GGKAREARMEDA
25GT TURBO

GGKBRTFRMUDA

RB25DET

R200V

GGKBRTARMUDA
BGHAREFR34EDA

20GT

RE4RO1B
FS5W71C

RB20DE

BGHAREARMEDA

RE4RO1B

R200

i%

I

25GT TURBO

BGKBRTFR34UDA

FS5R30A

RB25DET

BGKBRTAR34UDA

Prefix and suffix designations:

-

1

RE4RO1B

TEG,TDestlon'
A: Standard

U: intercooler turbocharger

Model

F: &speed manual transmission
A: 4-speed automatic transmission
20GT, 25GT, 25GT-X

T: 25GT TURBO

k: Right-hand drive
2WD
GH: RB20DE
4-door Sedan

B: 2WD + ELECTRIC SUPER HlCAS
GK: RB25DE, RB25DET

G: 2-door Coupe

R200V

$#i

IDENTIFICATION INFORMATION
- 2

L

Vehicle Identification Number

.
I

Vehicle identification plate

The stamping position for vehicle identification number is at the
right side of cowl top panel.
GF-HR34: From HR34-000001
GF-ER34: From ER34-000001
GF-ENR34: From ENR34-000001

--

Vehicle Identification Plate

-

-

NISSAN MOTOR CO,LTD.JAPAN
CHASSlS NO
YO DE CHASSIS

MOOEL

A
A

WDELO

n7-

me4 W

~YLCOLOAWUIWQW(

z; ENGINE
2;

Mom

2 I ;mi
T77.b

TRANS AXLE
TRANS EJE

I

AA

0

QA

cc

A&

PLANT
nrwrr

A TYP~
A Chassis No.
A Model
A ~ o d ycolor
A Inner trim color
A Engine type

A
A

Displacement
Transmission type
Transaxle type

ENGINE CONTROL SYSTEM
SECTION

EC

CONTENTS
ENGINE AND EMISSION CONTROL OVERALL
SYSTEM...........................................................................2
System Description...................................................... 2
Description of Engine Control......................................2
System Diagram .......................................................... 3
Component Parts Location..........................................6
Vacuum Hose Drawing ................................................8
Circuit Diagram ........................................................ 11
ECM (.EM) Terminal Layout ....................................13
TROUBLE DIAGNOSES ............................................... 15

Fail-safe and Backup Functions ...............................15
Self-diagnosis .......................................................... 16
CONSULT .................................................................. I 9
Symptom Matrix Chart...............................................28
Idle Speed Inspection and Adjustment ..................... ;35
Ignition Timing Inspection and Adjustment ................ 36
AirIFuel Ratio Inspection ........................................... 37
Fuel Pressure Inspection...........................................38
ECM (.TCM) InpuVOutput Signal Reference
Value ..........................................................................39

RS

MA

9D

ENGINE AND EMISSION CONTROL OVERALL SYSTEM

1

A

System Description
The engine control system, which performs various controls such
as the fuel injection control and ignition timing control with a single
control unit, has been adopted.
Diagnostic system applicable to CONSULT has been adopted for
easier inspection, service, and trouble diagnostic operations.

Description of Engine Control
I

Description
\

Performs optimum fuel injection for every operation condition for
improved exhaust performance and response.
Adopts SOFlS (Sophisticated and Optimized Fuel Injection System)
control for optimized fuel injection.
Adopts airbuel ratio feedback learning control that performs compensation of airfiuel ratio for improved drivability when the system is
in a transitional condiiion due to sudden change in airfiuel ratro.
Uses an ignition timing map stored in the control unit to perform
controls so that the optimum ignition timing is obtained for every
operating condition.
Performs knock control, in which the ignition timing is advancedl
retarded according to the presence of knocking, so that the optimum i nition timing is obtained for every operating condition and
type oPfue1.
Performs feedback control to obtain the target idle speed for various
conditions, such as during warm-up or when the air conditioner is
actuated, via the AAC valve that adjusts the intake air amount when
the throttle valve is fully closed.
Turns the fuel pump relay OWOFF according to the engine speed
signal.
In RB25DET model, FPCM (Fuel Pump Control Modulatoi) control
has been adopted for reduced idle noise.
Promotes warm-up of the heated oxygen sensor for improved air1
fuel ratio feedback function.
Tums the air conditioner relay OFF at starting or during acceleration
to reduce the engine load.
Tums the auxiliary electric fan relay ONIOFF according to the
engine coolant temperature signal and air conditioner signal.
Reduces engine toque during gearshift or when TCS (Traction
Control System) is being operated via a multiplex communication

Fuel injection control

Ignition timing control

Idle speed control

Fuel
pump drive
Heated oxygen sensor
heater control
Air conditioner cut control
--

Auxiliary electric fan control
Engine, M,TCS,ABS
integrated control
-

Variable valve timing control
I

Canister purge control

According to the engine speed and load, controls the cam phase by
hydraulic pressure to change intake valve open/close timing for
Increased engine torque at low and middle speeds and for
enhanced out~ut.
Performs duty control of the canister purge air according to various
ooeratina
conditions.
- r - ~e - Controls the intake air passage in the intake manifold collector to
increase engine torque at low and middle speeds and to enhance
output.
According to operation conditions, turns the air jet swirl control solenoid valve ONIOFF to openlclose the air jet swirl control valve for
stable combustion.
Tums the Turbo pressure control solenoid valve ONIOFF according
to operation conditions.
Ensures the vehicle's safe operation and enables the vehicle to be
driven in an emergency when any of the system major components
(microcomputer in the control unit, engine coolant temperature
sensor, etc.) fails.
For easier trouble diagnosis, self-diagnostic system is adopted and
the existing diagnostic system is modified so that CONSULT can be
used.
-

air intake valve
control
Air jet swirl control
pressure control
Fail-safe and backup controls
Diagnostic system

0

0

O
O
0

0
0

lino

-

-

-

,

I

o
0

-

0
0

0
0

ENGINE AND EMISSION CONTROL OVERALL SYSTEM
System Diagram
RB20DE (UB)
a

5
-wa
2

LL

Malfunction indicator lamp

Fuel pump control signal
Parwneutral position switch signal
C

Vehicle speed signal
-!

-5

Vehicle speed signal
c

!

I-

ENGINE AND EMISSION CONTROL OVERALL SYSTEM
System Diagram (Cont'd)

a

E
a

al

1

U.

Malfunction indicator lamp

Fuel pump control signal
ParWneutral position switch signal
Vehicle speed signal

+

-

2

F

1

-

4

-

D

Crankshaft position sensor signal
Air conditioner switch signal
~ n g i n ecoolant temperature sensor signal

2

*

4

Ignition timing control signal

-a
C

Auxiliary air control signal
Refrigerant pressure sensor signal

+

Power steering oil pressure switch signal

-

II

c
0,
."Y

Y

*

Variable valve timing control sign
Variable air intake control
solenoid valve control sig

-m

-

B

-

P

C
0,
ID

--2

C

s

ENGINE AND EMISSION CONTROL OVERALL SYSTEM
System Diagram (Cont'd)

I
C

LLOE

Resistor
I
1

I

~

a

I

w

Malfunction indicator lamo

I

Fuel D U ~ D
control sional I
Parklneutral position switch s i g n a n
Air conditioner switch signalCrankshaft position sensor signal
Engine coolant temperature sensor signalC
Ignition timing control signal
,Airlfuel ratio control signalVariable valve timing control s~anal

-

I

Vehicle soeed sianal
Refrigerant pressure sensor sianal

-

I

s

-k
0

r

U

W

-

rr

Power steering oil pressure switch signal
Heated oxygen sensor output signal
Mass air flow sensor signal
I

Knock sensor output signal

I
Turbo pressure signal

Auxiliarv air amount control
signal
2
L

gE 8E z$,

r

Air regulator

L
T
Turbo pressure sensor

ENGINE AND EMISSION CONTROL OVERALL SYSTEM
Component Parts Location
RB20DE (UB), RB25DE

Component name

I Fuel iniector

I
5m

'
3

I

o
C

w

v,

Electric, turbine

AAC valve

Solenoid valve (Duty control)

Air reaulator

Wax
Micro-mold (Built into power transistor)

Ignition coil
Canister purge control valve

Solenoid valve (Duty control)

I

Location

I Fuel tube

I

Right rear of luggage compartment (in
fuel tank)
Intake manifold collector (Upper)
Cylinder head (Top of each spark plug)
Upper part of rocker cover

Variable valve tirnina control solenoid valve
variable intake control solenoid valve

Solenoid valve (ON-OFF control)

Front end of cylinder head

Solenoid valve (ON-OFF control)

Variable air intake control actuator
Air jet swirl solenoid valve [RBPODE (UB)]

Diaphragm
Solenoid valve (ON-OFF control)

Upper part of rocker cover
Intake manifold collector

Air jet swirl actuator [RB20DE (LIB)]

Diaphragm
Photoelectric (Directly driven by camshaft)

Crankshaft position sensor

(?

Type

I Hiah-resistance

Fuel pump
IAA unit

I

Lower part of intake manifold
Left front of cylinder head

Ring gear crankshaft position sensor [RB20DE (UB)]

Magnetic

Clutch housing or converter housing

Mass air flow sensor
Throttle position sensor [Incorporates throttle valve
switch ( A l l models only)]
Engine coolant temperature sensor

Hot wire

Air cleaner

Variable resistance

Throttle chamber
Water outlet

Heated oxygen sensor

Thermistor
Zirconia (with heater)

Knock sensor
Power steering oil pressure switch

Piezoelectric
ON-OFF switch

Cylinder block
Rear of radiator lower hose

Vehicle speed sensor

Exhaust manifold

Electromagnetic power generation

Transmission

ECM (.TCM)

104-pin digital control

ECM & IGN coil relay

Small universal relay (2M)

Passenger dashboard side
Passenger dashboard side
Behind ECM (.TCM)

ENGINE AND EMISSION CONTROL OVERALL SYSTEM
Component Parts Location (Cont'd)

. . .,

"

.

.

7

Comoonent name

5-S I

Electriclturbine

unit

I
I

.

r

Fuel pump

Fuel tube
Right rear of luggage compartment (in
fuel tank)

AAC valve

ISolenoid valve (Duty control)

Air reoulator
"

1 wax
. -.

Intake manifold collector

I Micro-mold (Built into power transistor)
I Solenoid valve (Dutv control)
I Solenold valve (ONtOFF control)

of each soark olua)
Cvlinder head UOD

Ignition coil

I Canister purge control valve
Variable valve timing control solenold valve
Turbo pressure control solenoid valve
Crankshaft position sensor

09
5
V)

TVaLE
High-resistance

-1

4

I

Fuel injector

- - - -

I Solenoid valve (OMOFF control)

Upper part of rocker cover
Front end of cylinder head
Next to left strut tower

Photoelectric (Directly driven by camshaft)

Left front end of cylinder head

Hot wire

Air cleaner

Mass air flow sensor
Throttle position sensor [Incorporates throttle valve
switch (AlT model only)]

Variable resistance

Throttle motor sensor

Variable resistance

Engine coolant temperature sensor
Heated oxygen sensor
Knock sensor
Turbo pressure sensor

Thermistor
Zirconia (with heater)
Piezoelectric
Silicone diaphragm

Power steering oil pressure switch

ONJOFF switch

( Vehicle speed sensor

-

Throttle chamber
Water outlet
Turbocharaer exhaust outlet
Cylinder block
Upper part of rocker cover
Rear of radiator lower hose
Transmission

ECM (.TCM)

Electromagnetic power generation
104-pin digital control

Fuel pump control modulator (FPCM)

Voltage control

Left rear of luaaaae comoartment

Small un~versalrelay (2M)

Passenger dashboard s~de
ECM ( TCM)

Passenger dashboard side
--

1
P

t

ECM L IGN co~lrelay

ENGINE AND E.MISSION CONTROL OVERALL SYSTEM
Vacuum Hose Drawing
RB20DE (UB)

1. Intake manifold collector to Pressure regulator
2. Intake manifold collector to Vacuum tank
3. Variable air intake control solenoid valve to Three-way
connector
4. Air jet swirl control solenoid valve to Three-way connector
5. Variable air intake control solenoid valve to Variable air
intake control actuator
6. lntake manifold collector to Fuel damper
7. Vacuum pipe to Three-way connector
8. Canister purge control valve to Vacuum gallery
9. Canister purge control valve to Throttle chamber

10.
11.
12.
13.
14.
15.
16.
17.
18.

Canister to Vacuum gallery
Air cleaner case to Vacuum gallery
Vacuum tank to Three-way connector
Air jet swirl control solenoid valve to Three-way connector
Air jet swirl control solenoid valve to Air jet swirl actuator
Power steering air valve to Vacuum pipe
Power steering air valve to Air duct
Air jet swirl assembly to Vacuum pipe
Vacuum pipe to Vacuum pipe

;

ENGINE AND EMISSION CONTROL OVERALL SYSTEM
Vacuum Hose Drawing (Cont'd)

A

RB25DE

+Vacuum tank
Power steering air valve

--P

Vacuum tank

lntake manifold collector

ECL178OD

1.
2.
3.
4.
5.
6.
7.

lntake manifold collector to Pressure regulator
lntake manifold collector to Vacuum tank
Variable air intake control solenoid valve to Vacuum tank
lntake manifold collector to Fuel damper
Variable air intake control solenoid valve to Vacuum pipe
Canister to Vacuum gallery
Air cleaner case to Vacuum gallery

8. Canister purge control valve to Vacuum gallery
9. Canister purge control valve to Throttle chamber
10. Variable air intake control solenoid valve to Variable air
intake control actuator
11. Power steering air valve to Vacuum pipe
12. Power steering air valve to Air duct
13. Vacuum pipe to Vacuum pipe
14. AAC valve to Vacuum pipe

ENGINE AND EMISSION CONTROL OVERALL SYSTEM
Vacuum Hose Drawing (Cont'd)

Canister purge control vzlve

1. lntake manifold collector to Recirculation valve
2. One-way valve to lntake manifold collector

Canister purge control valve to One-way valve
Canister purge control valve to Vacuum pipe
Turbo pressure sensor to Vacuum tank
Turbo pressure control solenoid valve.to Air tube
Turbo pressure control solenoid valve to Three-way
connector
8. Air inlet tube to Three-way connector
9. Swing valve controller to Three-way connector

3.
4.
5.
6.
7.

Canister to Vacuum pipe
Pressure regulator to lntake manifold collector
Fuel damper to lntake manifold collector
lntake manifold collector to Vacuum pipe
Vacuum pipe to Vacuum pipe
Power steering air valve to Vacuum pipe
Power steering air valve to Air inlet hose
Air inlet pipe to Vacuum tank

ENGINE AND EMISSION CONTROL OVERALL SYSTEM
Circuit Diagram
RB20DE (UB).MTT, RB25DE, RB25DET.MTT MODELS

Fan motor
Auxtliary electric Ian relay

-

43

Alr cmdll~onercompressor

Engine W a n t
temwrature sensor

B.

Arr conduoner relay
Tachometer drive signal
14
Y

Mallunct~onindcator lamp
A

17

26

$7

=

Power steenng 011
pressure sw~icr.

I

/

TO starter motor
I

*'""L'*"

23

-

To rear defogger relay
[RB2MWD

[Except lor
RB25DE.4WDI

> TO PNP switch

'TO Starter relay

-

Check c o n n m r

ENGINE AND EMISSION CONTROL OVERALL SYSTEM
Circuit Diagram (Cont'd)
RB2ODE (UB).A/T, RB25DET.AfT MODELS

.

.

.,,.
.- ......
.: .
,

59

a

t-..A

Turbine

A

sensor

Overrun clutzh

.shdt ~ l e n w dvalve k
pressure detection switch

I'

Droppins revstor

T

".---

,

TC rear de'ogger relay

4

49
176

Sh:H control unit
8

18

9

'S

10

ENGINE AND EMISSION CONTROL OVERALL SYSTEM

ECM (-TCM) Terminal Layout

I

GY
Terminal
NO.
1
2

3
4
5

1I

CH~'GN-

(Data link connector for CONSULT)

Description
lgnition signal (Power transistor drrve signal) Cyl. No. 1

1 Ignition signal (Power transistor drive signal) Cyl. No. 5
1 Ignition signal (Power transistor drive signal) Cyl. No. 3

I

ECM 6 IGN coil relay control signal

1

1
1
1

1

Tachometer drive signal

-

6

7

Ignition signal (Power transistor drive signal) Cyl. No. 6

8

( Ignition signal (Power transistor drive signal) Cyl. No. 2

Terminal
No

Description
-

-

'34

Iu1"positron switch signal

'35
36

1 ''2" posifion switch signal
1

37

1

--

----

-

-

-

Throttle opening signal
[RB25DE.4WD,M/TSRB25DE.m RB25DEll

'38

"D" position switch signal

39

Neutral signal (Parklneutral position switch)

'40

(

I

"R" position switch signal

1 f-kswltch signal
- -

'41

-

--

-

9

Ignition signal (Power transistor drive signal) Cyl. No. 4

-

10
11

42

-

12

43

(

( AAC valve control signal

-

-

-

-

Sensor around

44

1 Crankshaft position sensor 120' (REF) signal

45

Crankshaft position sensor 120" (REF) signal

13

Fuel pump relay control signal

46

Crankshaft position sensor 1" (POS) signal

14

Air conditioner relay control signal

47

Ring gear crankshaft position sensor signal [RB20DE (UB)]
Turbo pressure sensor signal LRB25DEl-J

-

48

Power supply for throttle position sensor, refrigerant pressure
sensor, and turbo pressure sensor

-

49

Rear defogger switch signal

15
16
17

Malfunction indicator lamp

18

-

19

-

50

Heated oxygen sensor signal

51

Throttle motor sensor signal [RB25DET]

52

SB (select bit) 2 signal (RB25DET.ATJ

Ignition switch (START) signal

53

Motor throttle switch signal [RB25DET]

21
Air conditioner switch signal
22 (CHK) Check (Diagnosis start)
23
Throttle position sensor signal
24 (IGN) Ignition switch (IGN) signal

54

Mass air flow sensor signal

55

Mass air flow sensor ground

25

Control unit ground

'58

Output shaft rotation sensor signal (Vehicle speed sensor 1)

26

Power steering oil pressure switch signal

59

Turbine sensor signal [RB25DET.AlTj

'60

Oil temperature sensor signal

20

-

27
28
29

1 SB (select bit) 1 signal [RB25DET.A/Tl
1 Vehicle speed sensor signal (Vehicle speed sensor 2)

-

56

Engine coolant temperature sensor signal

57

Refrigerant pressure sensor signal

61
62

Knock sensor signal 1

30

Headlamp switch signal

63

Knock sensor signal 2

31

Ignition power supply

64

PJT mode switch signal (POWER) [RB20DE (UB).A/Tl

32
'33

Control unit ground

65

DB (data bush) 1 signal [RB25DET.W

Idle position switch signal

66

DB (data bush) 3 signal [RB25DET.W

Symbols in ( ) next to terminal numbers indicate the data link connector terminals. Items marked with are available on RB20DE
(UB) and RB25DET.m models only.

ENGINE AND EMISSION CONTROL OVERALL SYSTEM
ECM (-TCM) Terminal Layout (Cont'd)
Terminal
No.

Terminal
No.

Description
Control unit power supply
O/D OFF indicator lamp

75 (RX)

69
70

DB (data bush) 2 signal [RB25DET.AIT]
A K mode switch signal (SNOW) [RB20DE (UB).AIT]

76 (TX)
77

'71

Stop lamp switch signal

72

Control unit power

Auxiliary electric fan relay control signal [RB25DE, RB25DElJ
ECM.TCM. TCSIABS integrated control signal [Multiplex communication]. [RB25DENT.
RB25DEl
.

I

Battery power supply

80

Line pressure solenoid valve control signal (Dropping resistor
circuit)

"I3

-

103

Injector No. 3 cylinder drive signal

104

Variable air intake control solenoid valve control sianal
[RB~ODE(LIB), BR25DEl
Turbo oressure control solenoid valve control signal
[RB~~DET]

1

Transmit (Data output from control unit)
I

79
1

lnjector No. 1 cylinder drive signal

102

Receive (Data input to control unit)

78

-

101

-

74

67
'68

73

Description

-

I

114

Injector No. 4 cylinder drive signal

'1 15

Overrun clutch solenoid valve control signal

I16

I

lnjector ground

105

Injector No. 2 cylinder drive signal

117

Variable timing control solenoid valve control signal

'106

Line pressure solenoid valve control signal

118

Heated oxygen sensor heater control signal

Air jet swirl control solenoid valve control signal [RB20DE (U

.119

Power indicator lamp

'120

Lockup solenoid valve control signal

107
108

,\I
"11

Canister purge control valve control signal

Control unit power supply (Counter-electromotive current
logfeedback circuit)

I

110

Injector No. 5 cylinder drive signal

'122

111

Fuel pump terminal voltage control output signal [RB25DET]

123

Injector No. 6 cylinder drive signal

124

112

Shift solenoid valve A control signal

'121

Shift solenoid valve B control signal

-

Injector ground

Symbols in ( ) next to terminal numbers indicate the data link connector terminals. Items marked with ' are available on RB20DE
(UB) and R825DET.All models only.

TROUBLE DIAGNOSES
-

---

--

--- -

-

Fail-safe and Backup Functions
0

The fail-safe function estimates the opening conditions with other input signals and selects safer conditions for the engine (vehicle) control, based on the data previously stored in the control unit, when any of
the critical sensors in the ECM fails.
The backup function allows the vehicle to be driven, using control signals previously stored in the control
unit, even if the critical part of the system fails.

Function

Backup

Related
sensor
ECM
(-TCM)

Malfunction

Fail-safehackup

Fixes the ignition timing, fuel injection pulse width, and
The microcomputer in the control
AAC valve opening to the preset values so that the vehicle
unit (CPU) is malfunctioning.
can be driven.
--

-

MIL indication

MIL lights up.

Heated
owen
sensor
Fail-safe
Knock
function
sensor

Heated oxygen sensor output
voltage exceeded approx. 2V for
predetermined time.

Uses the estimated engine coolant temperature (varies with
elapsed time after start) to perform controls so that the
MIL lights up.
vehicle can be driven normally. The auxiliary electric fan
relay is turned ON. On RB25DET model, the turbo pressure control solenoid valve remains OFF.
Inhibits aidfuel ratio feedback control.

Determines idle position according to the throttle position
and the engine speed.
Throttle
Same as self-diagnostic malfunc- Fixes the output to the preset value so that the vehicle can
position
be driven normally.
tion detection conditions.
sensor
On RB25DET model, the turbo pressure control solenoid
valve remains OFF.

t.. -

MIL lights up.

Judges the vehicle as of regular specification. Retards the
Same as self-diagnostic malfuncignition timing within the knocking range so that the vehicle
tion detection conditions.
can be driven normally.

-

I
A'

-

Selects the fuel injection pulse width according to the
engine speed and the throttle opening so that the vehicle
Mass air
Output voltage dropped below
MIL lights up.
can be driven. Fuel injection will be inhibited when the
flow
0.3V while the engine is running.
engine speed exceeded approx. 2,400 rpm. During fail-safe
sensor
control, idle speed is controlled to 800 rpm.
Engine
coolant
Same as self-diagnostic malfunctemperation detection conditions.
ture sensor

G]

MIL lights up.

-

Throttle
motor
sensor

Fixes the throttle motor sensor output to the preset value
Same as self-diagnostic malfuncby turning the TCS switch ONIOFF, so that the vehicle can
tion detection conditions.
be driven normally.

Motor
throttle
switch

Same as self-diagnostic malfuncFixes the TCS switch OFF.
tion detection conditions.

MIL lights up.

%R

ST
R8

d

d

Self-diagnosis
DESCRIPTION
In self-diagnosis, when any of the critical sensors in the engine control system fails and the self-diagnostic malfunction detection conditions are satisfied, the malfunctioning system is stored in the control unit for
easier trouble diagnosis.
There are two methods to indicate the presence of a malfunction: By illuminating the malfunction indicator lamp (MIL) on the combination meter or by displaying on the CONSULT screen. Here describes indication by the malfunction indicator lamp.
There are two types of diagnostic test modes: Mode I and Mode 11. Mode I is normal status. Mode I1 is
either SELF-DIAGNOSTIC RESULT or HEATED OXYGEN SENSOR MONITOR function.

SELF-DIAGNOSIS OPERATION PROCEDURE
To activate Diagnostic Test Mode I1self-diagnosis, with the ignition witch turned ON (engine not running),
connect terminals CHK and IGN on the data link connector for 2 or more seconds with a suitable harness,
then disconnect them.
Perform self-diagnosis with the ignition switch remain in ON position. [Mode I1 SELF-DIAGNOSTIC
RESULTS]
When engine is started in the above status, the heated oxygen sensor monitor function will be activated.
[Mode II HEATED OXYGEN SENSOR MONITOR]
When ignition switch is turned off during diagnosis, the diagnosis will automatically returns to Diagnostic
Test Mode I. [Normal status]

1

I

r
I

+
I

I

I,

r \II

-

rest Mode I
MAL~UNLMNI
WARNlNfi

Switching diagnostic test modes

n
Connect terminals "CHIC and 'IGN'
on the data link connector for CONSULT for 2 or more seconds w~tha
suitable harness, then disconnect
them.

-

-

11

Diagnostic Test Mode II SELF-DIAGNOSTIC RESULTS
MIL indication (Blinkmg)
When normal: MIL blinks to indicate
'DTC 55'.
When malfunction detected: MIL
blinks to indicate DTC of malfunctioning systern(s).

Diagnostic Test Mode I1 HEATED
OXYGEN SENSOR MONITOR
MIL indicabon (Blinking)
Indicates lean (ON) and rich (OFF).

II

Erasing self-diagnostic results

Connect Leyinals 'CHIC and 'IGN"
on the data hnk connector for CONSULT for 2 or more seconds with a
suitable harness. then dsconnect
them.

CAUTION: When ignition switch is turned ON within several seconds after i t i s turned OFF wh~leDiagnostic Test Mode II
SELF-DIAGNOSTIC
RESULTSIHEATEO OXYGEN SENSOR MONITOR i s activated, SELF-DIAGNOSTIC RESULTS
will be performed again.

-

TROUBLE DIAGNOSES
Self-diagnosis (Cont'd)
MALFUNCTiON INDICATOR LAMP (MIL) INDICATION
Diagnostic test mode I - BULB CHECK
0

I \

The malfunction indicator lamp bulb check is carried out when
the ignition switch is turned ON (engine not started).
The malfunction indicator lamp should come ON when the
ignition switch is turned ON, and go OFF when the engine is
started.

Malfunction indicator lamp

Diagnostic test mode I

- MALFUNCTION WARNING

The system goes into the malfunction warning mode when any of
the following conditions is satisfied, and warns the driver by lighting up the malfunction indicator lamp in the combination meter.
Microcomputer in the ECM control unit (CPU) is malfunctioning.
Malfunction is detected during mass airflow sensor circuit selfdiagnosis.
Malfunction is detected during engine coolant temperature
sensor circuit self-diagnosis.
Malfunction is detected during vehicle speed sensor circuit
self-diagnosis.
Malfunction is detected during ignition signal circuit self-diagnosis.
Malfunction is detected during overheat self-diagnosis.
Malfunction is detected during heated oxygen sensor circuit
self-diagnosis.
~ a l f u n s i o nis detected during throttle position sensor circuit
self-diagnosis.
Malfunction is detected during Turbo pressure sensor circuit
self-diagnosis. [RB25DET model]
Malfunction is detected during throttle motor sensor circuit selfdiagnosis. [RB25DET model]

Diagnostic test mode I1 - SELF-DIAGNOSTIC RESULTS
Example: Blinking pattern for DTC "43"

0

0

ONh

This mode indicates the malfunctioning system(s) by the malfunction indicator lamp blinking pattern (indicating the DTC).
When no malfunction is detected, DTC "55" is indicated.

Diagnostic test mode II
MONITOR

OFF

0

Approx. 8.7S

OFF
(Rich)

1 Rich: B/(A + B) x 100

Duty ratio in 1 cycle Lean: Al(A + B) x 100

EFJ0041C

- HEATED OXYGEN SENSOR

This mode indicates status of the aidfuel ratio by blinks of the
malfunction indicator lamp.
Warm up the engine and increase and maintain the engine
speed at 2,000 rpm. Check that the malfunction indicator lamp
blinks at least five times in 10 seconds.
During airlfuel ratio feedback control,
when heated oxygen sensor output is high (rich): MIL goes
OFF.
when heated oxygen sensor output is low (lean): MIL comes
ON.
When aidfuel ratio feedback control is clamped: Status just
before clamp is maintained.
When airifuel ratio feedback control is stopped: MIL goes OFF.

1

TROUBLE DIAGNOSES
Self-diagnosis (Cont'd)
SELF-DIAGNOSTIC INDICATION ITEMS
DTC No. Self-diagnostic test items Malfunction (DTC No.) indication conditions (Malfunction is detected when ...)
l o (POS) signal or 120" (REF) signal is not input for predetermined time
while the engine is running.
Crankshaft position senAbnohal correlation is detected between 1" (POS) signal and 120" (REF)
sor signal circuit
sianal.
"
Mass air flow sensor output voltage is 4.9V or greater for predetermined
time when ignition switch is turned from OFF to ON, or after the engine is
Mass air flow sensor
stalled.
l2
signal circuit
Mass air flow sensor output voltage is less than 0.3V for predetermined
time while the engine is running.

MIL indication

,,

I

MIL lights up.

I

Engine coolant temperature sensor output voltage is approx. 4.8V or
greater (open circuit) or less than 0.06V (short circuit) for predetermined

Engine coo'ant temperature sensor signal circuit
14

-

MIL lights up.

time--

Vehicle speed sensor
signal circuit
Motor throttle switch signal circuit [RB25DET]

No vehicle speed signal is input for predetermined time while the vehicle is
being driven after warm up.
Abnormal correlation is detected between input voltages from the throttle
motor sensor and from the motor throttle switch for predetermined time.
Throttle
control unit detects malfunction in the system. (Open throttle senABS-TCS control unit
sor harness, etc.)
circuit JRB25DEl-l
TCS/ABS control unit detects malfunction.
Ignition signal circuit
No consecutive ignition signal while the engine is running.
Turbo pressure sensor output voltage is approx. 4.8V or greater (open cirTurbo pressure sensor
cuit) or less than 0.06V (short circuit) for predetermined time.
signal circuit [RB25DET]
Engine coolant temperature sensor output voltage is approx. 0.35V or less
Overheat
(sensor normal) for predetermined time.
a Heated oxygen sensor output voltage is approx. 0.2V or greater and less
than approx. 0.4V for predetermined time while the vehicle is being driven
Heated oxygen sensor
aner warm up.
signal circuit
Heated oxygen sensor output voltage is approx. 2V or greater for predeter-

I

1

mined time.

MIL lights up.

-

1

I

lights up.
MIL lights up.

MIL lights up.

I

I Knock sensor signal cir- I a At least one knock sensor indicates the output voltage of approx. 4V or

greater (open circuit) or less than approx. 1V (short circuit).
Throttle position sensor output voltage is approx. 4.7V or greater (open cirThrottle position sensor
cuit) or less than 0.06V (short circuit) for predetermined time while ark/
signal circuit
neutral position switch i s OFF and vehicle speed is 4 k d h or higher.
a Malfunction (openlshort circuit, etc.) is detected in multiplex communication
ABS-TCS communicaline between enaine and TCWABS.
tion circuit [RB25DET]
Throttle motor sensor
a Throttle motor sensor input voltage is approx. 4 1 8 ~ o greater
r
(open circuit)
signal circuit [RB25DET]
or less than 0.3V (short circuit) for predetermined time.
Malfunction is detected in P A communication circuit in ECM (-TCM).
Afr communication cir[RBZODE (UB), RB25Dm
a Malfunction (open circuit, short circuit, etc.) is detected in multiplex commucuit
nication line between ECM and TCM. [RB25DE1
NQ malfunction
No malfunction is detected in all the above circuits.

-

cuit

-

- -

MIL lights up.

-

MIL liqhts up.

-

I

MIL lights up.

I

-

Some of the above ~ e l f a i a ~ n o s t test
i c items can cause related malfunctions to be detected in M,
throttle control, and ABS seif-diagnosis when malfunction is detected. Therefore, malfunctions should
also be checked in self-diagnostic tests for systems other than engine.

CONDITIONS TO TURN OFF MALFUNCTION INDICATOR LAMP
Vehicle speed sensor signal circuit: Correct the sensor signal, then drive the vehicle at 4 km/h or higher.
Overheat: Check for causes of overheat, then erase self-diagnostic results.
Other items: Malfunction indicator lamp turns OFF when the vehicle returned to normal condition.

HOW TO ERASE SELF-DIAGNOSTIC RESULTS
In Diagnostic Test Mode II, with the engine stopped (ignition switch ON), connect terminals "CHK" and "IGFP
on the data link connector for 2 or more seconds with a suitable harness, then disconnect them.

TROUBLE DIAGNOSES
CONSULT
CONSULT INSPECTION PROCEDURE
Turn ignition switch OFF.
Connect "CONSULT to data link connector for CONSULT.
(Data link connector for CONSULT is located under the instrument lower cover on the driver's side on both LHD and RHD
models.)

Turn ignition switch ON.
Touch "START'.

NISSAN

CONSULT

START
1

I

I

SUB MODE

BR455C

Touch "ENGINE".

1b SELECTeYSTEM

[ ENGINE
I

b

SELECTDIAG MODE

n]

WORK SUPPORT
SELF-DIAG RESULTS
DATA MONITOR
ACTIVE TEST
FUNCTION TEST

,ECM PART NUMBER

SEF288S

Perform each diagnostic test mode according to each service
procedure.
For further information, see the CONSULT Operation Manual.

I

TROUBLE DIAGNOSES
CONSULT (Cont'd)
FUNCTION
Function

Diagnostic test mode
Work support

A technician can adjust some devices faster
and more accurately by following indications
on CONSULT.

Self-diagnostic results

Self-diagnostic resuits can be read and
erased quickly.

Data monitor

Input/Output data in the ECM can be read.

Active test

CONSULT drives some actuators apart from
the ECM's and also shifts some parameters in
a specified range.

Function test

Conducted by CONSULT instead of a technician to determine whether each system is
"OK" or "NG".

ECM part number

ECM part number can be read.

WORK SUPPORT MODE
WORK ITEM
THRTL POS SEN ADJ

IACV-AAC VALVE ADJ

I

CONDITION
CHECK THE THROTTLE POSITION SENSOR SIGNAL.
ADJUST IT TO THE SPECIFIED VALUE BY ROTATING
THE SENSOR BODY UNDER THE FOLLOWING CONDITIONS.
0 IGN SW "ONn
0 ENG NOT RUNNING
ACC PEDAL NOT PRESSED

I

USAGE

When adjusting throttle position
sensor initial position

I
1
ISET ENGINE SPEED AT THE SPECIFIED VALUE UNDER I
THE FOLLOWING CONDITIONS.
ENGINE WARMED UP
0 NO-LOAD

FUEL PRESSURE RELEASE

i

FUEL PUMP WILL STOP BY TOUCHING "START"
DURING IDLING.
CRANK A FEW TIMES AFTER ENGINE STALLS.

When releasing fuel pressure
from fuel line

I
1

I
J

TROUBLE DIAGNOSES
CONSULT (Cont'd)

m

SELF-DIAGNOSTIC RESULTS MODE
When any of the control unit input/output signal circuits fails and the self-diagnostic malfunction detection
conditions are satisfied, the malfunctioning circuit is stored in the memory and displayed later.
Self-diagnostic test items

I

Crankshaft position sensor signal circuit

Mass air 'lowsensor signal circuit

I
Engine coolant temperature sensor signal circuit
Vehicle speed sensor signal circuit

I

Malfunction is detected when

...

1" (POS) signal or 120" (REF) signal is not input for predetermined time while the engine is running.
Abnormal correlation is detected between 1" (POS) signal and 120" (REF) signal.
Mass air flow sensor output voltage is 4.9V or greater for
predetermined time when ignition switch is turned from
OFF to ON, or after the engine is stalled.
Mass air flow sensor output voltage is less than 0.3V for
predetermined time while the engine is running.
Engine coolant temperature sensor output voltage is
approx. 4.8V or greater (open circuit) or less than 0.06V
(short circuit) for predetermined time.
No vehicle speed signal is input for predetermined time
while the vehicle is beina driven after warm UD.

Abnormal correlation is detected between input voltages
from the throttle motor sensor and from the motor
throttle switch for predetermined time.
Throttle control unit detects malfunction in the system.
ABS-TCS control unit cir(Open throttle sensor harness, etc.)
cuit [RB25DETJ
TCS/ABS control unit detects malfunction.
No consecutive ignition signal while the engine is runlgnition signal circuit
ning.
Turbo pressure sensor output voltage is approx. 4.8V or
Turbo pressure sensor
greater (open circuit) or less than 0.06V (short circuit) for
signal circuit [RB25DETl
predetermined time.
Engine coolant temperature sensor output voltage is
Overheat
approx. 0.35V or less (sensor normal) for predetermined
time.
Heated oxygen sensor output voltage is approx. 0.2V or
greater and less than approx. 0.4V for predetermined
Heated oxygen sensor
time while the vehicle is being driven after warm up.
signal circuit
Heated oxygen sensor output voltage is approx. 2V or
greater for medetermined time.
At least one knock sensor indicates the output voltage of
Knock
approx. 4V or greater (open circuit) or less than approx.
cuit
1V (short circuit).
Throttle position sensor output voltage is approx. 4.7V or
Throttle position sensor
greater (open circuit) or 0.06V or less (short circuit) for
signal circuit
predetermined time while parkheutral position switch is
OFF and vehicle s ~ e e dis 4 km/h or hiaher.
ABS-TCS communication
Malfunction (openlshort circuit, etc.) is detected in multicircuit [RB25DETl
plex communication line between enaine and TCS/ABS.
Throttle
motor sensor input voltage is approx. 4.8V or
Throttle motor sensor siggreater (open circuit) or less than 0.3V or less (short cirnal circuit [RB25DET]
cuitl for redetermined time.
Malfunction is detected in A/T communication circuit in
ECM (.TCM). (RB2ODE (UB), RB25DET]
AiT communication circuit a Malfunction (opedshort circuit, etc.) is detected in multiplex communication line between ECM and TCM.
[RB25DE1

Malfunction display item

No malfunction

No malfunction is detected in all the above circuits.

Data storage
(Yes/No,
-.

Crankshaft position sensor

yes

1

1

Vehicle speed sensor
Motor throttle switch

mm

19
L~J

Engine coolant temperature sensor

I

I
AT

Mass air flow sensor

switch signal circuit JRB25DETI

1

I

Yes

I

Yes
Yes

--

ST
RS

ABS-TCS C/U SIGNAL
lgnition switch (Start signal)

Yes

TURBO PRESS SENSOR

Yes

OVER HEAT

Yes

Oxygen sensor

Yes

Knock sensor

Yes

Thronle position sensor

Yes

EL

8D

I

ABSrrCS C,u
Motor throttle sensor

Yes

A/T COMM LINE

Yes

NO SELF DIAGNOSTIC
FAILURE INDICATED.
FURTHER TESTING MAY
BE REQUIRED.

Some of the above self-diagnostic test items can cause related malfunctions to be detected in An;
throttle control, and ABS self-diagnosis when malfunction is detected. Therefore, malfunctions should
also be checked in self-diagnostic tests for systems other than engine.

TROUBLE DIAGNOSES
CONSULT (Cont'd)
DATA MONITOR MODE
Monitored item
[Unit]

ECM
Main
input signals
signals

Remarks

Description
lndicates the engine speed computed
from the POS signal ( l osignal) of the
camshaft position sensor.

-

MAS AIRiFL SE [V]

When the engine is stopped, a certain
value is indicated.

The signai voltage of the mass air flow
sensor is displayed.
The engine coolant temperature (determined by the signal voltage of the engine
coolant temperature sensor) is displayed.

0
0

0 2 SEN [V]'

The signal voltage of the oxygen sensor
is displayed.

MiR F/C MNT*
[RICH/LEAN]

Display of oxygen sensor signal during
air-fuel ratio feedback control:
RICH ... means the mixture became
"rich", and control is being affected
toward a leaner mixture.
LEAN ... means the mixture became
"lean", and control is being affected
toward a rich mixture.

VHCL SPEED SE
[krn/h] or [mph]

The vehicle speed computed from the
vehicle speed sensor signal is displayed.

BATTERY VOLT [V]

The power supply voltage of ECM is displayed.

THRTL POS SEN [V]

The throttle position sensor signal voltage is displayed.

THRTL POS SE2 [V]
0 RB25DET

Throttle motor sensor output voltage

TURBO BOOST
SENSOR
RB25DET

Turbo pressure sensor output voltage

When the engine coolant temperature
sensor is open or short-circuited, ECM
enters fail-safe mode. The engine coolant
temperature determined by the ECM is
displayed.

0

After turning ON the ignition switch,
"RICH" is displayed until air-fuel mixture
ratio feedback control begins.
When the air-fuel ratio feedback is
clamped, the value just before the clamping is displayed continuously.

I
Approx. 4.6V
0

Approx. 2.7V

-

START SIGNAL
[ON/OFF]
CLSD THUP SW
[ 0N/OFF]
AIR COND SIG
[ON/OFF]

PiN POSl SW
[ONIOFF)

Indicates [ON/OFF] condition from the
starter signal.
lndicates [ON/OFF] condition from the
throttle position sensor signal.

0
0
0

After starting the engine, [OFF] is displayed regardless of the starter signal.

lndicates [ON/OFF] condition of the air
conditioner switch as determined by the
air conditioner sianal.
lndicates [ON/OFFj condition from the
parldneutral position switch signal.

PW/ST SIGNAL
[ONIOFF]

LOAD SIGNAL
[ON/OFF]

lndicates [ON/OFfl condition from the
electrical load signal andlor lighting
switch.
ON ... rear defogger is operating.
OFF ... rear defogger is not operating.

NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.
*: Models with three way catalyst.

TROUBLE DIAGNOSES
CONSULT (Cont'd)
Monitored item
[Unit]

.

Remarks

Description
signals

I
INJ PULSE [msec]

IGN TIMING [BTDC]
IACV-AACN I%]

PURG VOL C N
[ONIOFF dutyj

I lo

I lo

lndicates the actual fuel injection pulse
width compensated by ECM according to
the input siqnals.

When the engine is stopped, a certain
computed value is indicated.

lndicates the ignition timing computed by

When the engine is stopped, a certain
value is indicated.

ECM according to the input signals.
lndicates IACV-AACN control value computed by ECM according to the input signals.
lndicates the EVAP canister purge volume control valve computed by the ECM
according to the input signals.
The opening becomes larger as the
value increases.
-

AIF ALPHA [%]

The mean value of the air-fuel ratio feedback correction factor per cycle is indicated.

AIR COND RLY
[ONIOFF]

The air conditioner relay control condition
(determined by ECM according to the
input signal) is indicated.
--

-

-

-

-

When the engine is stopped, a certain
value is indicated.
This data also includes the data for the
air-fuel ratio learning control.

-

Indicates the fuel pump relay control condition determined by ECM according to
the input signals.
The control condition of the intake valve
timing control solenoid valve is indicated.
ON ... Intake valve timing control is operating.
OFF ... lntake valve timing control is not
operating.
VlAS S N [ONIOFF]
RB20DE (UB),
RB25DE

Control conditions computed by ECM
Solenoid valve activated: ON
Solenoid valve not activated: OFF

SWRL CONT S N
[ON/OFF]
0 RB20DE (UB)

,

COOLING FAN
[HVLOW/OFF]
RB25DE,
RB25DET

The control condition of the cooling fan
(determined by ECM according to the
input signal) is indicated.
HI ... High speed operation
LOW ... Low speed operation
OFF ... Stop

TURBO CONT S N
0 RB25DET

Control conditions computed by ECM
Solenoid valve activated: ON
Solenoid valve not activated: OFF

PD PRESSURE
SENSOR M

Refrigerant pressure sensor output voltage

VOLTAGE

Voltage measured by the voltage probe.
Pulse width, frequency or duty cycle
measured by the pulse probe.

Approx. 0.36V min.
(Varies with air conditioner refrigerant
pressure)

Only "#" is displayed if item is unable to
be measured.
r Figures with "#"s are temporary ones.
They are the same figures as an actual
piece of data which was just previously
measured.

TROUBLE DIAGNOSES
CONSULT (Cont'd)
ACTIVE TEST MODE
CONDITION

TEST ITEM

I.US~~~CONSULT.

INJECTION

CCohArthe amount of fuel injection

CHECK ITEM (REMEDY)

JUDGEMENT

Engine: Return to the original trouble
If trouble symptom disappears, see
CHECK ITEM.

:

~,"~~,,,~scOnnectOr
Oxygen sensor

IACV-AACN
OPENING

Engine: After warming up, idle the
engine.
Change the IACV-AAC valve opening
percent using CONSULT.

Engine speed changes according to the
opening percent.

.

ENG COOLANT
TEMP

Engine: Return to the original trouble
conditioo
Change the engine coolant
temperature using CONSULT.

If trouble symp:orn disappears, see
CHECK ITEM.

:

IGNITION TIMING

Engine: Return to the original trouble
condition
Timing light: Set
Retard the ignition timing using
CONSULT.

If trouble symptom disappears, see
CHECK ITEM.

-

POWER BALANCE

COOLING FAN
RB25DE,
RB25DET

I

Engine: After warming up, idle the
engine.
A/C switch "OFF
Shift lever uNn
Cut off each injector signal one at a
time using CONSULT.

Engine runs rough or dies.

Ignition switch: ON
Turn the cooling fan "ON" and "OFF
using CONSULT.

Cooling fan moves and stops.

lgnition switch: ON (Engine stopped)
Turn the fuel pump relay "ON" and
"OFF using CONSULT and listen to
operating sound.

Fuel pump relay makes the operating
sound.

.
.

Sensor

0

Fuel injectors

0

Adjust ignition timing (by moving
camshaft position sensor)

.

0

FUEL PUMP RELAY

Harness and connector
IACV-AAC valve

0

Harness and connector
Compression
Injectors
lgnition coil with power transistor
Spark plugs
Hamess and connector
Cooling fan motor
Cooling fan relay

.

Harness and connector
Fuel pump relay

VlAS SOL VALVE
RB20DE (UB),
RB25DE
Checks control items and output circuit by arbitrary ON/OFF operation.

VALVE TIMING SOL
SWIRL CONT SOL
VALVE
0 RB20DE (UB)
SELF-LEARNING
CONT

.
.

In this test, the coefficient of self-learning control mixture ratio returns to the original coefficient by touching "CLEAR" on the
screen.

0

PURG VOL CONTN

Engine: Run engine at 2,000 rpm.
Turn the E V ~ P
canister purge control
solenoid valve
and
using
CONSULT and listen for operating
sound.

EVAP canister purge control solenoid
valve makes an operating sound. Check
vacuum signal for EVAP canister purge

~ ~ ~ ~ ~ ~exists.
a ' c u u m
VC OFF ... Vacuum does not exist.

.

Harness and connector
EVAP canister purge control solenoid
valve
Vacuum hose

TROUBLE DIAGNOSES
CONSULT (Cont'd)
REAL TlME DIAGNOSIS IN DATA MONITOR MODE
CONSULT has two kinds of triggers and they can be selected by touching "SETTINGJyin "DATA MONITOR"
mode.
1. "AUTO TRIG" (Automatic trigger):
The malfunction will be identified on the CONSULT screen in real time.
In other words, malfunction item will be displayed at the moment the malfunction is detected by ECM.
DATA MONITOR can be performed continuously until a malfunction is detected. However, DATA MONITOR cannot continue any longer after the malfunction detection.
2. "MANU TRIG" (Manual trigger):
Malfunction item will not be displayed automatically on CONSULT screen even though a malfunction
is detected by ECM.
DATA MONITOR can be performed continuously even though a malfunction is detected.
Use these triggers as follows:
.
1. "AUTO TRIG"
While trying to detect the DTC by performing the "DTC CONFIRMATION PROCEDURE", be sure to
select to "DATA MONITOR (AUTO TRIG)" mode. You can confirm the malfunction at the moment it is
detected.
While narrowing down the possible causes, CONSULT should be set in "DATA MONITOR (AUTO
TRIG)" mode, especially in case the incident is intermittent.
When you are inspecting the circuit by gently shaking (or twisting) the suspicious connectors, components and harness in the "DTC CONFIRMATION PROCEDURE, the moment a malfunction is found
the malfunction item will be displayed. (Refer to GI section, "Incident Simulation Tests" in "HOW TO
PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT'.)
2. "MANU TRIG"
If the malfunction is displayed as soon as "DATA MONITOR" is selected, reset CONSULT to "MANU
TRIG". By selecting "MANU TRIG" you can monitor and store the data. The data can be utilized for
further diagnosis, such as a comparison with the value for the normal operating condition.
I

I
I

SELECT MONITOR ITEM

MAIN SIGNALS
SELECTION FROM MENU

Ih

SET RECORDING COND

1 1k

I

MANU TRIG

I

I

LONG TlME

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SET RECORDING CON0

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1-

1

START

I

"AUTO TRIG"
A malfunction can be
displayed on "DATA
MONITOR" screen
automatically if detected.

"MANU TRIG"
A malfunction can not be
displayed on "DATA
MONITOR" screen
automatically even if
detected.

1

GI

I
AT
BR

ST
Rs

HA

TROUBLE DIAGNOSES
CONSULT (Cont'd)

t

i
i

FUNCTION TEST MODE
FUNCTION TEST
ITEM

CONDITION
lgnition switch: ON
(Engine stopped)
Displays the results of on board
diagnostic system.

SELF-DIAG
RESULTS
-

CLOSED THROTTLE
POSl

JUDGEMENT

CHECK ITEM (REMEDY)

Objective system

-

ignition switch: ON
(Engine stopped)
Throttle position sensor circuit is
tested when throttle is opened and
closed fully. ("IDLE POSITION" is
the test item name for the vehicles
in which idle is selected by throttle
position sensor.)

Throttle valve:
opened

OFF

Throttle valve:
closed

ON

Harness and connector
Throttle position sensor (Closed
throttle position)
Throttle position sensor (Closed
throttle position) adjustment
Throttle linkage
Venfy operation in DATA
MONITOR mode.

THROTTLE POSl
SEN CKT

lgnition switch: ON
Range (Throttle
(Engine stopped)
valve fully opened More than
Throttle position sensor circuit is
- Throttle valve 3.0V
tested when throttle is opened and
fully closed)
closed fully.

Harness and connector
Throttle position sensor
Throttle position sensor
adjustment
Throttle linkage
Verify operation in DATA
MONITOR mode.

PARWNEUT POSl
SW CKT

lgnition switch: ON
(Engine stopped)
Neutral position switch circuit is
tested when shift lever is
manipulated.

Harness and connector
Neutral position switch
Linkage adjustment

FUEL PUMP
CIRCUIT

lgnition switch: ON
(Engine stopped)
Fuel pump circuit is tested by
checking the pulsation in fuel
pressure when fuel tube is
pinched.

Out of N/P
positions

OFF

In N/P positions

There is pressure pulsation on
the fuel feed hose.

Harness and connector
Fuel pump
Fuel pump relay
Fuel filter clogging
Fuel level

- -

VALVE TIMING S N
CKT

The valve timing control system is
diagnosed by checking for
operating sound of the solenoid
valve.

COOLING FAN
CIRCUIT
RB25DE, RB25DET

lgnition switch: ON
(Engine stopped)
Cooling fan circuit is tested when
cooling fan is rotated.

The cooling fan rotates and
stops every 3 seconds.

Harness and connector
Cooling fan motor
Cooling fan relay

START SIGNAL
CIRCUIT

lgnition switch: ON -+ START
Start signal circuit is tested when
engine is started by operating the
starter. Battery voltage and water
temperature before cranking, and
average battery voltage, mass air
flow sensor output voltage and
cranking speed during cranking
are displayed.

Start signal: OFF 3 ON

Harness and connector
lgnition switch

TROUBLE DIAGNOSES
CONSULT (Cont'd)
-

-

FUNCTION TEST
ITEM

CONDITION

JUDGEMENT

Ignition switch: ON
Locked position
(Engine running)
Power steering oil pressure switch
circuit is tested when steering
wheel is rotated fully and then set Neutral position
to a straight line running position.

PWIST SIGNAL
CIRCUIT

ON

OFF

CHECK ITEM (REMEDY)

Harness and connector
Power steering oil pressure switch
a Power steering oil pump

The variable air intake system is
diagnosed by checking for operation of the actuator.

VlAS SN CIRCUIT
0 RB20DE (UB),
RB25DE

GO

I

-

The air jet swirl control system is
diagnosed by checking for operation of the actuator.

SWRL CONT S N
CIRCUIT
0 RB20DE (UB)
--

-

-

VEHICLE SPEED
SEN CKT

Vehicle speed sensor circuit is
tested when vehicle is running at
a speed of 10 km/h (6 MPH) or
higher.

IGN TIMING ADJ

After warming up, idle the engine.
Ignition timing is checked by readThe timing light indicates the
ing ignition timing with a timing
same value on the screen.
light and checking whether it
agrees with specifications.

Adjust ignition timing (by moving
camshaft position sensor or distributor)
Camshaft position sensor drive
mechanism

Air-fuel ratio feedback circuit
(injection system, ignition system,
Oxygen sensor COUNT More
vacuum system, etc.) is tested by
than 5 times during 10 secexamining the oxygen sensor outonds
put at 2,000 rpm under nonloaded state.

INJECTION SYS (Injector, fuel
pressure regulator, harness or
connector)
IGNITION SYS (Spark plug, ignition coil, power transistor harness
or connector)
VACUUM SYS (Intake air leaks)
Oxygen sensor circuit
Oxygen sensor operation
Fuel pressure high or low
Mass air flow sensor

After warming up, idle the engine.
Injector operation of each cylinder
is stopped one after another, and
resultant change in engine rotation
is examined to evaluate combustion of each cylinder. (This is only
displayed for models where a
sequential multipart fuel injection
system is used.)

Difference in engine speed is
greater than 25 rpm before
and after cutting off the injector of each cylinder.

Injector circuit (Injector, harness or
connector)
Ignition circuit (Spark plug, ignition
coil, power transistor harness or
connector)
Compression
Valve timing

After warming up, idle the engine.
IACV-AAC valve system is tested
by detecting change in engine
speed when IACV-AAC valve
opening is changed to 0%, 20%
and 80%.

Difference in engine speed is
greater than 150 rpm between
when valve opening is at 80%
and at 20%.

Harness and connector
IACV-AAC valve
Air passage restriction between air
inlet and IACV-AAC valve
IAS (Idle adjusting screw) adjustment

a

MIXTURE RATIO
TEST

Vehicle speed sensor input
signal is greater than 4 krnlh
(2 MPH).

Harness and connector
Vehicle speed sensor
Speedometer

- --

/

POWER BALANCE

D

D

IACV-AACN
SYSTEM

ECM PART NUMBER
Part number of the ECM equipped on the vehicle can be read.
ECM: 23710-XXXXX
ECM-TCM:23740-XXXXX

877

RS
HA
la

TROUBLE DIAGNOSES

Symptom Matrix Chart
RELATION BETWEEN CONTROL ITEMS AND SENSORSfACTUATORS

@: High possibility to control damage
0:
Low possibility to control damage

1$1$1$

Sensors and actuators

1@1@1@
r

Crankshaft position sensor
Ring gear crankshaft position sensor
[RB20DE (UB)]

I

I

@

Mass air flow sensor

I Engine coolant temperature sensor

I

i

0 I @ II 0
0

Heated oxygen sensor
Knock sensor

e?

01 0
0 0 0
0
0

- Vehicle speed sensor

Throttle position sensor

C .

$ Turbo pressure sensor (TIC)
Refrigerant pressure sensor

0
0 0 0

@

START

lgnition switch

IGN

Air conditioner switch
Parklneutral position switch
Power steering oil pressure switch
Electrical load switch

0

Battery voltage
injector
Ignition system

I power transistor
lgnition coil
I

I

@ G O

I

I

I

I

I

I

I

I

I

I

I

I

AAC valve
Fuel DumD relav
.

.

ECM & IGN coil relay

o
2

2

%
Auxiliary electric fan relay
3

I@l@l@
I

I

1

Air conditioner relay

0

Canister purge control valve
Variable valve timing control solenoid valve
Variable air intake control solenoid valve

,(NA)

Air jet swirl control solenoid valve
[RB20DE (UB)]

0

Turbo pressure control solenoid valve
(TW
FPCM (TIC)
%' Dropping resistor (TIC)

2.

5

I

Air regulator
Canister

I

0

TROUBLE DIAGNOSES
Symptom Matrix Chart (Cont'd)

-RELATION BETWEEN TROUBLE SYMPTOMS AND SENSORS

-.-

No
start

Sensors

@: High possibility

Symptom

0:Low possibility

Crankshaft position
sensor (POS, REF)

Instantaneous
xeak

Ring gear crankshaft
position sensor
[RB20DE (UB)]

s1
"

Signal

2

Power supply

iigh output
,ow output

Engine coolant temperature sensor

iigh resistance
-ow resistance

- --

Heated oxygen sensor
Knock sensor

iigh output
.ow output

Vehicle s ~ e e dsensor

Ipedshort

Throttle position sensor

Jnstable output
'oar adjustment

Turbo pressure sensor (TIC)
Refrigerant pressure
sensor
Ignition switch (IGN)
k$n;pRnT)sw

itch

Air conditioner switch
ParWneutral position
switch
Power steering oil
pressure switch
Electrical load switch
Multiplex communication line
Control unit power
supply
Sensor ground
Control unif and connector
*:

Fast idle

'oor contact
Vater intrusion

I

Hard
start

Rough idle

Poor derivability

Engine stall

TROUBLE DIAGNOSES
Symptom Matrix Chart (Cont'd)

I

Sensor-related problems
Open
Crankshaft position sensor
(POS, REF)
Ring gear crankshaft position
sensor [RB20DE (UB)]

Instantaneous break
Open
Open

Signal
Mass air flow sensor

High output
Low output

I
I

Open
Open
Opedshort
Engine coolant temperature sen- High resissor
tance
Low resistance
Opedshort
Heated oxygen sensor
OpedShort
Knock sensor

Vehicle speed sensor

Throttle position sensor

Turbo pressure sensor (TE)

High Output
Low output
Opedshort

I

1 lgnition timing may not be retarded when knock is detected.

Fuel cut time becomes-shorter, or no fuel cut is observed.
Base
idle speed is used. Fuel injection is not increased during acceleration. AIT
Opedshort
shift point changes for AfF vehicles.
Unstable out- Unnecessary cut-in fuel injection could be the cause. Poor contact at the ground
or control unit could be the cause.
put
Poor adjust- ldle judgment is "OFF while idling. Condition returns normal by turning the ignition switch ON and OFF repeatedly.
ment
Turbo pressure is judged zero. No remarkable malfunction will be detected.
Open
Refrigerant pressure is judged high. ldle speed remains high while the air conditioner is ON.
Refrigerant pressure is judged low. ldle speed remains low while the air conditioner is ON.
Engine will not start because neither fuel system nor ignition system outputs control signals.
Engine starts in normal condition. Engine may not start when temperature is
extremefy low.
Air conditioner will not operate. No other malfunction will be noted.
Park/neutral position switch is judged "OFF. Target engine speed for cold engine
in N or P position is reduced.
ParWneutral position switch is judged "0N"IFast Jdle is effective when the engine
is cold and the gear is in other than N and P posrtlons. Vehrcle excessrvely
creeps.
Engine may stall when the steering wheel is turned while the vehicle is standstill
and the accelerator pedal is lightly
- - -pressed, or when the steering wheel is turned
during deceleration.
Power steering switch is judged 'ON." Value will be compensated constantly.
Idle speed drops so that the engine can stall when electrical load is applied.

Short
lgnition switch (IGN)

Open

lgnition switch (START)

Open

Air conditioner switch
Open
Parklneutral position switch
Short

Electrical load switch
Multiplex communication line

No airfluel ratio compensation is carried out during lean bum status. Drivability
may be affected.
Enters fail-safe mode. Driving under 2,400 rpm is allowed.
Airlfuel ratio becomes rich. Black smoke may be noted. Poor contact at the
ground could be the cause.
Aidfuel ratio becomes lean. Dirty hot wire or air entering the system could be the
cause.
Airlfuel ratio becomes over-rich.
Same symptom as when signal wire is open.

Enters fail-safe mode. Malfunction indicator lamp comes ON. Ordinary driving is
allowed. Problems tend to occur when engine is cold or engine coolant temperature is high.
Detects low engine coolant temperature. Problems tend to occur after engine
warm-up.
Detects high engine coolant temperature. Problems tend to occur when engine is
cold.
Base aidfuel ratio is used.
lgnition timing is retarded within the knock control range. Lack of power may be
noted.
lgnition timing is retarded within the knock control range. Lack of power may be
(noted.

Refrigerant pressure sensor

Power steering oil pressure
switch

Symptom characteristics and ins~ectionhints
Engine will not start when either REF signal circuit or POS signal circuit is open.
Neither fuel system nor ignition system outputs control signals.
Symptoms vary with the break time and the vehicle's driving conditions. Light
shock or surging will occur while the vehicle is being driven, and the engine will
stall at idle speed.

Open

'

Short
Open

Torque reduction control is not performed. Therefore, shift shock becomes
greater.
Engine will not start because neither fuel system nor ignition system outputs conOpen
trol signals.
------ Same symptoms aswhen
sensor harness is open.
O~edshort
Poor contact In case of poor contact, the connector fitting may be loose. In case of water
Water intru- intrusion, the engine stalls and become inoperative for a while. The engine may
restart soon in some cases.
sion
Open/short

- --

Control unit power supply
Sensor ground

-

Control unit and connector

I

-

- --

-

--

--

-

--

-

-

-

-

---

--

*va

TROUBLE DIAGNOSES
Symptom Matrix Chart (Cont'd)

r

SYMPTOMS AND ACTUATORS
-"- RELATION BETWEEN TROUBLE
No
Hard
Actuators

.

Start

Symptom

@: High possibility

0:Low possibility

Open
Coil

Open
Open
Short

I

Foreign material

Injection port

Ignition signal (Power
transistor drive signal)
Ignition primary signal
(Power transistor
ground)

.-c.

-k

Primary si'de
Secondary side

2 Power supply

Fuel pump relay
Auxiliary electric fan
relay [RB25DE,
RB25DEfl
hen

Canister purge control valve
Variable valve timing
control solenoid valve
Variable air intake
control solenoid valve

~

Air jet swirl control
solenoid valve
Turbo pressure control solenoid valve
Injector ground (Total
ground)

nstantaneous
reak
I

': Fast idle

start

Rough idle

Poor derivability

Engine stall

TROUBLE DIAGNOSES
Symptom Matrix Chart (Cont'd)
Symptom characteristics and inspection hints

Actuator-related malfunction

An open circuit causes no fuel injection to the corresponding cylinder, and the
heated oxygen sensor output becomes lean. When the open circuits are
observed at all cylinders, the engine will not start.
Open
Injector

Drive
circuit

A short circuit causes continuous fuel injection to the corresponding cylinder, and
over-rich airlfuel ratio and misfire will be noted. When the short circuits are
observed at all cylinders, the engine will not start.

Short

Foreign
Injection material

Foreign material causes continuous fuel injection to the corresponding cylinder.
Symptoms vary with the condition how the injection port is clogged. Aidfuel ratio
compensation factor becomes larger. (110 to 125%)

Clogs
lgnition signal (POW&transistor
drive siqnal)
Ignition primary signal (Power
transistor ground)
Power
supply
lgnition coil

AAC valve

L

(open

Open
Open

-

Open

primary
s~de

Second- Open
arY side Leaks
Power
Open
supply
Drive
Open
circuit

Fuel pump relay
Auxiliary electric fan relay
[RB25DE, RB25DETI
Canister purge control valve

AAC valve is fully closed. Symptoms vary with the base engine speed. When it is
too low, engine may stall while the vehicle is decelerating or when the power
steering load or electrical load is applied.

1 Open

1 Engine will not start. In case of instantaneous break, surging may occur.

Open

Auxiliary electric fan will not operate even after warm-up is completed.

Open

The valve will not purge. Gasoline smell may be noted when the weather is hot.
The valve purges constantly. In summertime, engine may stall at idle speed due i
to rich aidfuel ratio. In wintertime, various malfunctions may occur due to lean
airlfuel ratio.

1

Variable valve timing control
solenoid valve
Variable air intake control solenoid valve (NA)

,

Air jet swirl control solenoid
valve [RB20DE (UB)]
Turbo pressure control solenoid
valve (TIC)

Short

Open

Valve timing not switched.

Open
Short
Open
Short

Variable air intake valve opens, and torque in low speed range is reduced.
Variable air intake valve closes, and torque in high speed range is reduced.
Air jet swirl control valve remains closed.
Air jet swirl control valve remains open.

Open

Swing valve opens earlier, and maximum turbo pressure is reduced.
Engine will not start because the injectors do not operate.

Open
Injector ground (Total ground)

An open circuit causes no fuel injection to the corresponding cylinder, and the
heated oxygen sensor output becomes lean.
When the open circuits are observed at all cylinders, the engine will not start.
In case of instantaneous break, symptoms vary with the break time and the
vehicle's driving conditions. Light shock or surging will occur while the vehicle
is being driven.
The engine will stall when break time is long.

I

lnstantaneous break

I

Symptoms vary with the break time and the vehicle's driving conditions. Surging
or engine stall may occur when the instantaneous break occurred during fuel
injection.
I

'

TROUBLE DIAGNOSES
Symptom Matrix Chart (Cont'd)
RELATION BETWEEN TROUBLE SYMPTOMS AND ENGINE MECHANICAUACCESSORIES
Malfunction of the gasoline engine will not occur when the three elements of combustion (compression
pressure, aidfuel mixture, and spark) are all normal. Though the aidfuel mixture and the spark (ignition timing) are controlled by ECM (.TCM) control unit, if the engine mechanical is malfunctioning, a malfunction will
occur. (The table below shows universal cases. Some cases may not apply to the vehicle.)

I I

Hard
start

start
No

Rough idle

Engine mechanical-related malfunction

0:High possibility

0:Medium possibility
A: Low posstbility

I

Air sucked in at oil level gauge
Air sucked in at oil filler cap
Loose air duct (A-F/M downstream)
Misconnection of canister piping
Cracked intake manifold
PCV valve stuck open
Aidfuel mix- Clogged fuel strainer
ture
Clogged air cleaner element
Malfunctioning pressure regulator
Improper gasoline properties
EGR valve stuck open
Deposits on valve
Excessive canister purge volume

0
0
0

A
A
A

0

A

A

0 0 0

A

0

0

0

0 0
00

Misconnection of high-tension wire
Spark

Compression pressure

.

Improperly adjusted ignition timing
Malfunctioning spark plug
High-tension wire leaks
Distributor cap leaks

A
A

Improper valve contact

a 0 8 0

Worn piston ring

~ 0 8 0

Clogged catalytic converter or
exhaust system
Low base idle speed

0
0

A

0
0

0 0
A A

Others

1

Foreign material (vinyl, etc.) in fuel
tank
Clogged radiator or capacitor
-

--

I I I I

--

': Fast idle
Adding to the items listed above, check the following.
Wiring harness for tension
Ground wires for loosenes
nuids and oils for levels
All connectors for connection
Battery connections for loosenes and corrosion
Drive belts for loosenes

0
0

-

I

Poor drivability

Engine stall

TROUBLE DIAGNOSES
Symptom Matrix Chart (Cont'd)

I

Engine mechanical-related malfunction

Symptom characteristics and inspection hints

Air sucked in at oil filler cap

Misconnection of canister piping

I Cracked intake manifold

I

Airffuel ratio becomes lean.
Aidfuel ratio compensation factor becomes higher.
a Intake manifold induction vacuum becomes lower.
Use an induction vacuum (pressure) gauge for check.
'Common to all air sucking conditions from air intake system.

-

Air/fuel
mixture

.

PCV valve stuck open

Abnormal noise (peep) may be heard.

Clogged fuel strainer

Symptoms vary with the condition how they are clogged. However, the
symptoms tend to occur when the vehicle is driving at high speed and
under high load.

Clogged air cleaner element

IVarious symptoms occur depending on the fuel pressure.

I Malfunctioning pressure regulator

Various symptoms occur depending on the properties.

Improper gasoline properties

I

I E G R i a l e stuck open

r

I

Air/fuel ratio becomes lean. Airfluel ratio compensation factor becomes
higher.

Deposits on valve

I

Excessive canister purge volume

Engine may stall when the accelerator pedal is lightly pressed. (Especially
in summertime.)

Check if the ignition timing is correct.

Misconnection of high-tension wire

1
1
1

Improperly adjusted ignition timing
Malfunctioning spark plug
High-tension wire leaks

Symptoms vary with the degree of leaks.

Distributor cap leaks

I

ISymptoms vary with the degree of contact and the number of cylinders.

CornImproper valve contact
pression
pressure Worn piston ring

l

'

I

Symptoms vary with the degree of wear and the number of cylinders.
I

,I

Clogged catalytic converter or exhaust system
Low base idle speed

In many cases, engine stalls and then restarts after a while.

I

Engine may stall while the vehicle is decelerating or when the power
steering load or electrical load is applied.

'

Dragging brake
Others

Belt tension too high
Air conditioner load too heavy

IToo much refrigerant in the system.

ArJ load too heavy

Insufficient A/T fluid (FR model)

Foreign material (vinyl, etc.) in fuel tank

Symptom tends to occur when fuel level in the tank becomes lower.

I Clogged radiator or capacitor

I

1

j

TROUBLE DIAGNOSES

ldle Speed Inspection and Adjustment
ldle speed specification (After warm-up)

I RygIE

RB25DE

Engine type

.

.

I

-

(Pm)
1

I

15*2/600

CO density

0.1, max.

HC density

50, max.

': ldle speed varies with air conditioner refrigerant pressure and engine coolant temperature.
a Warm up engine to normal operating temperature.
a Connect "CONSULT' to the data link connector for CON-

0

SULT (under the instrument lower driver panel) and turn
ignition switch ON.
Connect a tachometer to the engine speed detection terminal.
a Check that the air conditioner load, power steering pump
load, and various electrical loads are not applied to the
engine. During inspection and adjustment, the A/T selector lever must be in "N" or "P" position.
a Perform "IACV-AAC VALVE ADJn in "WORK SUPPORT
mode with CONSULS.
@ a Disconnect throttle position sensor harness connector.

@

(Above step cancels the idle speed feedback control.)

0

a

Turn idle speed adjusting screw (IAS) on the AAC valve
assembly to adjust base idle speed to 600 rpm.
Turning IAS clockwise makes base idle speed lower. Turning
IAS counterclockwise makes base idle speed higher.
a Cancel "IACV-AAC VALVE ADJ" in "WORK SUPPORT'
mode with CONSULT.
a Connect throttle position sensor harness connector.

@
a

ldle speed adjusting screw

ECL1641C

Go

600
I

Ignition timing
(Feedback control cancelled)

RB25DET

650250
(700 900)'

idle speed [N or P position]
(Air conditioner ON)
Base idle speed
(Feedback control cancelled)

I
I

Check that the actual idle speed is 650-1-50rpm.

"" "

87'
R8

~ p
-4

EL

8~

TROUBLE DlAGNOSES

Ignition Timing inspection and Adjustment
lnstall a timing light to the ignition timing detection loop (blue)
A 3 e Perform "IACV-AAC VALVE ADJ" in "WORK SUPPORT
mode with CONSULT.
/Ci3\
Disconnect throttle position sensor harness connector.

w
(Above step cancels the idle speed and ignition timing feedbacl
controts.)

With the engine idling, check that the ignition timing and bas1
idle speed is within the specification listed below.
If not within the specifications, loosen the crankshaft positio
sensor mounting bolt, turn the crankshaft position sensor an
adjust the ignition timing to the specifications. Turning th
crankshaft position sensor counterclockwise advances th
ignition timing.
Unit: BTDCO/rpl
Engine type
Ignition timing

RB20DE (VB)

RB25DE, RB25DET

1O-e2/600

15*2/600

Cancel "IACV-AAC VALVE ADJ" in "WORK SUPPORl
mode with CONSULT.
Connect throttle position sensor harness connector.
Race engine and check that the ignition timing advana
immediately.
CAUTION:
When idle speed or ignition timing is checked and adjuste
with the throttle position sensor harness connectc
disconnected, the self-diagnostic results of the throttle COI
trol unit and the ABS must be erased. To erase the self-dia!
nostic results, first turn ignition switch OFF, and then start tt
engine. Confirm that the TCS OFF indicator lamp, 4WD indic
tor lamp, and ABS indicator lamp are all OFF, then erase tt
self-diagnostic results. This must be done because disco
nection of the throttle position sensor harness connectc
even for engine adjustment, will make control units to dete
abnormal status.

@

TROUBLE DIAGNOSES

AirIFuel Ratio Inspection
CO/HC DENSITY INSPECTION

Insert probe into left exhaust pipe.
ECLl788D

L Malfunction indicator lamp

The vehicle uses aidfuel ratio feedback system with learning function. Because wide range of compensation is available, no CO/HC
density adjustment is necessary.
Warm up engine to normal operating temperature, and check
that the idle speed and the ignition timing are within the specifications. Then, check CO/HC density with COIHC meter.
CAUTION:
RB25DET-NT model uses exhaust pressure-sensitive control
muffler. Therefore, insert probe of the COMC meter into the
left exhaust pipe. (under -no-load condition, exhaust gas is
emitted from the left exhaust pipe only.)
a
If not within the specifications, check the airlfuel ratio feedback
@status as follows.
Select "MIR FIC MNT" in "DATA MONITOR" mode.
a Run engine at approx. 2,000 rpm or higher and check that
"RICH" and "LEAN" are displayed alternately.
Turn ignition switch ON and connect terminals CHK and
IGN on the data link connector for CONSULT (under
instrument lower driver panel) for 2 seconds or more with
a suitable harness, then disconnect them.
a Warm up the engine to normal operating temperature, then run
the engine at 2,000 rpm or higher. Check that the malfunction
indicator lamp blinks at least five times in 10 seconds.
0
Engine speed should be increased (approx. 2,000 rpm)
before performing check, even though the air/fuel ratio
feedback control is active during idling.

@

G!

I
I
ST
Rs
klk~

La=
8D

I

TROUBLE DIAGNOSES

Fuel Pressure Inspection
QUICK INSPECTION
0

@

Turn ignition switch ON (engine not running).
Select "FUEL PUMP CIRCUIT' in "FUNCTION TEST
mode.
Pinch fuel hose with fingers and check for pulsation.
Pinch fuel hose between fuel filter and fuel gallery (fue
damper for RB2SDET model) with fingers while fuel puml
is operating. Hose should feel hard or pulsating.

INSPECTION USING FUEL PRESSURE GAUGE
Releasing fuel pressure
Fuel pump fuse

Start engine.
Select "FUEL PRESSURE RELEASE" in "WORK SUP
PORT' mode.
Touch "START' and after engine stalls, crank it two o
three times to release all fuel pressure.
Start engine and disconnect fuel pump fuse.
After engine stalls, crank it two or three times to releas
all fuel pressure.

Installing fuel pressure gauge
Connect a fuel pressure gauge between fuel filter and fue
gallery (fuel damper for RB25DET model).
CAUTION:
When disconnecting fuel hose, use shop cloth to remove an!
fuel leaks.
Install fuel pump fuse.

Fuel pressure standard value confirmation

hose

Pressure

Start engine and check that the fuel pressure is as specified.
Fuel pressure [MPa (kg/cm2)]
At idle: 0.25 (2.5)
When vacuum hose is disconnected from pressure regulator: 0.29 (3.0)
If the vehicle shows poor starting, check fuel pressure fo
approx. 5 seconds after ignition switch is turned ON (During :
sec. after ignition switch turned ON for RB25DET model).
Fuel pressure [MPa (kg/cm2)]
During 5 sec. after ignition switch turned ON:
0.29 (3.0)
When fuel pressure is NG
Too high: Malfunctioning pressure regulator, malfunction in^
fuel damper, clogged fuel return line, bent hose
Too low: Malfunctioning pressure regulator, malfunctioning fue
damper, poor fuel pump discharging, clogged fuel supply line
clogged fuel filter
CAUTION:
Also check fuel pressure at increased engine speed.

TROUBLE DIAGNOSES

ECM (aTCM) InputDutput Signal Reference
Value

P

-

SIGNAL VOLTAGES MEASURED WITH OSCILLOSCOPE AND CIRCUIT TESTER
Signal voltages measured at ECM (-TCM) terminals (terminals for engine control) with a circuit tester and
example of waveforms displayed on an oscilloscope are shown below.
For signal terminals for A/T control, refer to "AIT Trouble Diagnosis" in AT section.
Measured data are affected by many factors such as irregularity of parts, vehicle history, operating
conditions, environment, service status, and measuring instruments and methods.

/

RX TX

Terminal
No.

C H ~ ~ " N (Data link connector for CONSULT)

Signal name

At idle

At approx. 2,000 rpm

When cranking: Approx. 0.12V

Approx. 0.15 - 0.25V

I nition signal
ower transistor
drive signal)

8

At idle: Approx. 0.1V

?pprox. 1V
ECM & IGN coil
,During approx. 1.5 sec. after ignition switch turned OFF:
relay control signal 4pprox. 1V
1.5 sec. after ignition switch turned OFF:Battery voltage)
:RB20DE (UB), RB25DEJ
Approx. 1.2V

Tachometer drive
signal

:RB25DET]
Approx. 7.2V

NOTE: Above voltages are measured values obtained by analog circuit tester.

EC-39

Approx. 3V

TROUBLE DIAGNOSES
ECM (-TCM) InputlOutput Signal Reference
Value (Cont'd)
Terminal
No.

At idle

At approx. 2,000 rpm

Approx. 12V

Approx. 8V

Signal name

AAC valve control
signal

RB25DEl
[RB20DE (UB),
During 5 sec. after ignition switch tumed ON: Approx.
0.25V
5 sec. after ignition switch turned ON: Battery voltage
When cranking: Approx. 0.25V
At idle: Approx. 0.25V

Fuel pump relay
control signal

-

-

[RB25DETJ
During 3 sec. after ignition switch tumed ON: Approx.
0.9V
3 sec. after ignition switch tumed ON: Battery voltage
When cranking: Approx. 0.9V
At idle: Approx. 0.9V

Approx. 0.9V

Air conditioner
Air conditioner OFF: Battery voltage
relay control signal Air conditioner ON: Approx. 0.25V
MIL OFF: Battery voltage
Malfunction indica- MIL ON
RBZODE (UB),
RB25DE: Approx. 0.85V
tor lamp
RB25DET Approx. 0.1V
lgnition switch
(START) signal

Approx. OV
(Ignition switch at START Battery voltage)

Air conditioner
switch signal

Air conditioner OFF: Approx. 4.7V
Air conditioner ON: Approx. 0.1V

Check (Diagnosis
start)

CONSULT connected: Approx. OV
CONSULT not connected: Approx. OV

Throttle position
sensor signal

Accelerator pedal released: Approx. OSV
Accelerator pedal fully depressed: Approx. 4.2V
(Ignition switch ON, engine not running)

lgnition switch
(IGN) signal

lgnition switch OFF: Approx. OV
lgnition switch ON: Battery voltage

Ground

Approx. OV

Power steering oil
pressure switch
signal

Steering wheel not tumed: Approx. 4.N
Steering wheel turned: Approx. OV

-

22 (CHK)

24 (IGN)

26

d

NOTE: I bove voltages are measured values obtained by analog ircuit tester.

Approx. 0.6 - 0.7V

TROUBLE DIAGNOSES
ECM (*TCM) InpuWOutput Signal Reference
Value (Cont'd)
Terminal
No.

Signal name

At idle

At approx. 2,000 rpm
IRB20DE (UB)]
When driving at approx. 40 km/h: Approx. 2.4V

@I

i
ECL 1 7920

rlehicle speed sen;or signal

dead lamp switch
;ignal

[RB25DE, RB25DETI
When driving at approx. 40 kmk: Approx. 2.4V

Light switch OFF: Approx. OV
Light switch ON: Battery voltage

gnition power sup- Ignition switch OFF: Approx. OV
)iY
Ignition switch ON: Battery voltage
dle position switch
Approx. OV
(When accelerator pedal is depressed)
lB25DET.m
Mottle opening
ignal
RB25DE.4WD.W
;RB25D€.AlT,
3R25Dm

Accelerator pedal released: Approx. 0.5V
Accelerator pedal fully depressed: Approx. 4.2V
(Ignition switch ON, engine not running)

Approx. 0.N

Jeutral signal
Selector lever in Neutral or in N or P position: Approx. OV
ParWNeutral posi- Selector lever in other positions: Approx. 4.8V
on switch)
41

:ull switch signal
?B20DE (UB),
lB25DET-A/Tl

Accelerator pedal released: Approx. OV
Accelerator pedal fully depressed: Battery voltage
(Ignition switch ON, engine not running)
-

- -

----

NOTE: I love voltages are measured values obtained by analog rcuit tester.

%R

TROUBLE DIAGNOSES
ECM (-TCM) Input/Output Signal Reference
Terminal
No.

At approx. 2,000 rprn

At idle

Signal name

When cranking: Approx. 1.3V

Approx. 1.4V

Crankshaft position
sensor 120" (REF) signal

-

At idle: Approx. 1.35 1.4V

ECLl426D

When cranking: Approx. 2.6V

Approx. 2.6V

Crankshaft position
sensor 1" (POS) signal

jle: Approx. 2.6V

ECLl428C
When cranking (DC range): Approx.
(AC range): Approx.

DC range: Approx. 0.1V
AC range: Approx. 3.2V

Ring gear crankshaft
position sensor signal
[RB20DE (UB)]

At idle DC range - Approx. 0.1 V
[Ac range]. /\ppmx. 1.W

(v:

15
10
5

0

-

49

Turbo Dressure sensor
signal '
[RB25DET]
Throttle position sensor,
refrigerant pressure
sensor, turbo pressure
sensor power supply
Rear defogger switch
signal

t

(When engine raced sirddenly: Approx. 2.7 - 3.1V)

2ear defogger switch OFF: Approx. OV
Rear defogger switch ON: Battery voltage
C-

NOTE: , bove voltages are measured values obtained by analog circuit tester.

EC-42

TROUBLE DIAGNOS :s
ECM (.TCM) lnpu 3utput Signal Reference
Value (Cont'd)

..

At approx. 2,000 rpm

At idle

No.

Fluctuates between approx. 0.1 to 0.4V and approx.
0.7 to 0.9V

:v:
i .5
I .O

0.5

0

1 1 j l l l l l l l l
ECL 1 8645

ECL 1 8630

Throttle motor sensor
signal
[RB25DET'J

Approx. 3.4V

Motor throttle switch
signal
[RB25DET]

Approx. 4.7V

Mass air flow sensor
signal

Ignition switch ON: Approx. 0.2V
At idle: Approx. 1.I 1.2V

Mass air flow sensor
ground

Approx. OV

56

Engine coolant temperature sensor signal

Coolant temperature approx. 20°C: Approx. 3.5V
Coolant temperature approx. 80°C: Approx. 1.2V

C

57

Refrigerant pressure
sensor

Approx. 0.36V min.
(Voltage increases as the air conditioner refrigerant
pressure increases.)

+

62
63
67
72

1
1

-

--

-

Knock sensor signal 2

I

Control unit power supPIY

Receive (Data input to
control unit)
Transmit (Data output
from control unit)

78

Auxiliary electric fan
relay control signal
[RB25DE, R B 2 5 D m

t

(When TCS is operating: Approx. OV)
Approx. 1.6

-

-

Knock sensor signal 1

I (Voltage becomes lower when TCS operates.)

I
-

Approx. 0.4 2V (')
': Voltage varies with measuring range (internal resistame) of a circuit tester.

+

Battery voltage

+

-

1

CONSULT connected: Approx. 0.25V
CONSULT not connected: Battery voltage

I

C

I

-

CONSULT connected: Approx. 9V max.

I

-CONSULT not connected: Approx. OV
I

Fan stopped: Battery voltage

I

-

-

IFan operating: Approx. 0.2 0.3V

NOTE: Above voltages are measured values obtained

analog circuit tester.

- 1.7V

TROUBLE DIAGNOSES
ECM (-TCM) Input/Output Signal Reference

Value (Cont'd)
Terminal
No.

Signal name

A: idle

At approx. 2,000 rpm

Approx. 2V

t

CM.TCM, TCS/ABS
tegrated control signal
dultiplex communica&DE.m,
B25DETj

attery power supply

3attery voltage
When cranking: Approx. 10.5V

(v)
50
40
30
20
10
0
ijector drive signal

rariable air intake con:ol solenoid valve conrot signal
RB20DE (UB),
3B25DEI ' .
-urbo pressure control
iO1enOidvalve
iianal

Slightly lower than battery voltage

At idle: &Wry voltage

switch ON: Battery voltage (Solenoid valve
At idle: Approx. 0.2

- 0.3V (Solenoid valve ON)

t

At approx. 3,650 rpm and above [RB2ODE (UB)]
At approx. 3,500 rpm and above [RB25Dq
: Battery voltage (Solenotd valve OFF)
t

Battery voltage (Solenoid valve OFF)

[When engine raced suddenly: Approx. 0.3V (Solenoid
valve ON)]
t

4ir jet swirl
'Oid

Coolant temperature approx. 70°C and above, and
driving at approx. 3,300 rpm and above [MTT]
Coolant temperature approx. 70°C and above: Battery Coolant temperature approx. 70°C and above, and
driving at approx. 3,000 rpm and above [A/T1
voltage (Solenold valve OFF)
: Approx. 0.9V (Solenoid valve ON)

temperature below approx. 70°C: Approx.
sole- Coolant
0.9V (Solenoid valve ON)

RB20DE (VB)]

[RB20DE (UB), RB25DEl
Air conditioner OFF: Battery voltage
Approx. 10V
Air conditioner ON: Battery voltage
(After approx. 15 sec.)

Approx. 9V

M

30
20
10
0

108

NOTE:

Zanister purge control
~alvecontrol signal

(Waveform indicates when air conditioner is ON.)
[RB20DETJ
Air conditioner OFF: Battery voltage
Air conditioner ON: Battery voltage 4 Approx. 1OV
(After approx. 15 sec.)

Approx. 9V

I (Waveform indicateswhen air conditioner is ON.)
tester.

TROUBLE DIAGNOSES
ECM (.TCM) InputlOutput Signal Reference
Value (Cont'd)
No.

I

1
-

,

At idle

Signal name
Control unit power supply (Counter-electromolive current feedback
circuit)
Fuel pump terminal
voltage control output
signal
IRB25DETI
Variable valve timing
control signal

7

A t approx. 2,000 rpm

Battery voltage
Ignition switch at START: Approx. OV
During approx. 30 sec. after engine started with coolant temperature 50°C or above: Approx. OV
At idle: Approx. 1OV

Approx. OV
t

[With driving wheels lifted and gear in D position:
Approx. 0.45V (Solenoid valve ON)]
Approx. 0.3V
(At approx. 2,800 rpm and above: Battery voltage)

Battery voltage (Solenoid valve OFF)
Approx. 0.3V

1

I

I

NOTE: Above voltages are measured values obtained by analogue circuit tester.

I
AT
BR

AUTOMATIC TRANSMISSION
SECTION

AT

CONTENTS
SHIFT LOCK SYSTEM ....................................................2
Component Parts Location..........................................2
Shift Lock Circuit Diagram ...........................................2
Reverse Buzzer Circuit Diagram .................................2
TROUBLE DIAGNOSES ................................................. 3
System Description.................................................... ..3
Fail-safe Function...................................................... ..3
Shift Mechanism ......................,,.............. ....................5
Clutch and Band Chart ................................................6
Component Parts Location.......................................... 7

Circuit Diagram ........................................................... .8
Control Unit Input/Output Signal Specifications ....... .I0
Shift Pattern .............................................................. 1 3
Shift Schedule............................................................ 15
Basic Inspection........................................................ -16
Line Pressure Test .....................................................16
Stall Test ................................................................... 1 7
CONSULT .................................................................. 9
Self-diagnosis ............................................................23
Symptom Chart. ........................................................ -25

SHIFT LOCK SYSTEM

Component Parts Location

pJ/

Control device

I '-#I

Key interlock cable

Park position

\

Shift Lock Circuit Diagram
I

AfT device connector
Brake SW connector

~-

M-AT

4AT

Shift lock solenoid

6 Park position SW
(2)

$5
IOA

/

2j nI1

-

5
(6)

Connectors

Brake SW

AfT device

Terminal No. in parenthesis is used for M-AT.

AT01 O57C

Reverse Buzzer Circuit Diagram
# 12
#ll

# 28

PNP SW

36

1

29
Meter C/U
(with integrated buzzer)

9

1 1
551
TK 20 pins (Wh~te)

l\li

)

[ I
36
TK 24 pins (Brown)
2

9

m

Reverse lamp

1

155

4b

,

,

&-

] l ~ a ! ! b - l l 1 l l 1
I i I 1 I I I I ! I
TK 20 pins (Brown)

AT01 056D

TROUBLE DIAGNOSES

System Description
Vehicle with RB20DE and RB25DET engine has TCM integrated into ECM. Vehicle with RB25DE engine has
TCM and ECM separately.

Fail-safe Function
When malfunction occurs in each sensor and solenoid, the fail-safe functions below enable vehicle to be
driven.

VEHICLE SPEED SENSOR 1 (Output shaft speed sensor)

@

EG

Inputs a signal from vehicle speed sensor in speedometer.

THROTTLE POSITION SENSOR
Detects throttle opening by idle switch and full switch, and controls line pressure as follows.
I

1

I

Line pressure

Full switch

Idle switch

-

ON

I

OFF

I

- -

I

ON

418

Maximum oil pressure

OFF

- -

OFF

Minimum oil pressure

I

Throttle opening

BR

218

I

0/8

PNP SWITCH

ST
I28

When the multiple PNP switch signals are input to TCM and ECM-TCM,the priority of selector lever position
becomes as follows by internal TCM determination.
4AT D, N, R, 2, 1
I%$
M-AT D, N, R, 3, 2
Because the hydraulic circuit of the control valve is switched by manual valve according to the selector lever
position, however, actual operating condition of vehicle becomes as follows.
EL

4AT

I
I

- -

--

P

" P and other position signals

P

R

"R" and other position signals

R

N
D

-

p
p

p
p

I
I

"D" and other position signals

I
I

1

" 2 and other position signals

I

r

"N" and other position signals
-

-

-

2 and "1"

"

L

M-AT

83

N
Dl*DP*Dd
21~ 2 2
21~ 2 2

I

and other position signals

1

"1"

P

"P" and other position signals

P

R

"R" and other position signals

R

N

"N" and other position signals

N

D

"D" and other position signals

D1t;.D2c*D3

" 3 and other position signals

3, -3,-3-3,

"3"and "2" position signals

3, +3, +3,

3

I

Running status

PNP switch input signal

Actual lever position

2

1

"2" and other position signals

l,++l2

/

214

2

TROUBLE DIAGNOSES
Fail-safe Function (Cont'd)
SHIFT SOLENOID A, B
When a malfunctioning signal of solenoid is input to TCM and ECM-TCM,the gear is shifted as follows.
Shift positions

Abnormal solenoid A

Normal

A

B

0

0

Gears

A

1st

-

B

o-+x

Gears

Abnormal solenoid B
A

I
3

03x

-

Gears

Abnormal solenoid A/B
A

8

-

-

Gears

--

0:
Solenoid ON

X: Solenoid OFF

-: Abnormal

LINE PRESSURE SOLENOID
When a malfunctioning signal of solenoid is input to TCM and ECM-TCM,
the line pressure solenoid is turned
OFF, and the line pressure is set to maximum oil pressure.

LOCK-UP SOLENOID
When a malfunctioning signal of solenoid is input to TCM and ECM.TCM, the lock-up solenoid is turned OFF,
and the lock-up is released.

OVERRUN CLUTCH SOLENOID
When a malfunctioningsignal of solenoid is input to TCM and ECM-TCM,the overrun clutch solenoid is turned
OFF, and the overrun clutch is engaged to apply the engine brake during deceleration.

MANUAL MODE SWITCH (M-AT)
When a malfunctioning signal of manual mode switch is input to TCM and ECM.TCM, the gear is controlled
with normal "D" position.

SHIFT CONTROL UNIT (Except RB20DE)
When a malfunction occurs in the shift control unit, the shift solenoid NB are turned OFF, and the gear position is controlled with 3rd speed.

TURBINE SENSOR (Except RB20DE)
Controlled by vehicle speed sensor 1 in the same way without turbine sensor

TROUBLE DIAGNOSES
Shift Mechanism
1 Turbine sensor 1

Overdrive
control
switch

I

tine pressure solenoid

I

1

Shift solenoid B

Full switch

ECM-TCM( A l l side) (RB20DE, RB25DET) or TCM (RB25DE)

*

ECM.TCM (Engine side)
(RB20DE. RB25DET) or
ECM (RB25DE)

I
Venrle speed sensor 2

Shift control unit
(Except RB20DE)

,

1

-p
O/D OFF
indicator lamp

(RB25DET)
POWER ~nd~calor
lamp @AT;

(

1

POWER (Except M-AT)
SNOW

]

I

-

Steering shift main switch

ATN 1983D

TROUBLE DIAGNOSES

Clutch and Band Chart
WC
(Reverse
clutch)

*"
c'utch)

FIC (Forward
clutch)

Band servo

O/C
(Overrun
clutch)

-

3rd
release

2nd apply

4th apply

F/O C
U0.C
L&R/B
(Forward (Low one- (Low and
reverse
way
brake)
clutch)
clutchl

Remarks
PARK POSITION
REVERSE
POSITION
NEUTRAL
POSITION

P

0

R
N
1st

2nd

'4

0
0

-3rd
4th
1st

2
2nd
Ist
1 .

2nd

0
0
0
69
0
0
0
0

*I@

'I@

0

'18

'263

0
8

*3@

.

0

@

0
0
0

0

Automatic shift

Automatic shift

Locked in 1st

0

DUAL MATIC M-ATx
--

(Reverse
clutch)

WC (High
clutch)

I

Band servo

fi In

FIC (Forward
clutch)

FI0.C

/

UOC

I

L&WB

I
PARK POSITION
REVERSE
POSITION

@

0

0

'269

8

-38

8

-

.

NEUTRAL
POSITION

. Automatic shift

-

0

@

0

G3

Automatic shift

1 0
I

I

I

I

I

I

I

I

I

Automatic shift

control swil:ch is being set in "OFF position. (D, shift is inhibited.)
'2: oil pressure is applied to both 2nd "apply" side and 3rd "releasenside of band servo piston. However, brake band does not
contract because oil pressure area on the "releasenside is greater than that on the "apply" side.
'3: Oil pressure is applied to 4th "apply" side in condition '2 above, and brake band contracts.
'4: A/T will not shift to 4th when overdrive control switch is set in "OFF position.

* 1 : O~eratewhen

0:
Operates.

a:Operates during "progressive" acceleration.

@: Operates but does not affect power transmission.
@: Operates when throttle opening is less than specification, but does not affect engine brake.
f i : O ~ e r a t e swhen throttle opening is less than specification, activating engine brake.

TROUBLE DIAGNOSES
Component Parts Location

Line pressure
Shift
solenoid
solenoid A
Shift solenoid B
Overrun clutch
solenoid

[M-AT (Except TCS)]

Control valve uppe:

Steering switch relay

I QlShift control unit
(Except RB20DE)

?

ATN 1985D

AT-?

TROUBLE DIAGNOSES

Circuit Diagram
1 Data link

I
I

connector for CONSULT

I
Vehicle speed sensor 1
I
(Output shaft speed sensor)
Turbine sensor
(Exceot RB20DE)

Shifi CRI (M-AT)

65

Steering shifl SW
(M-AT)

10

Steering shift main SW

1
Terminal No. in parenthesis (

) of throttle position sensor and throttle posit~onswitch 1s used for RB25DET.

AT-8

Manual mode SW

I

TROUBLE DIAGNOSES
Circuit Diagram (Cont'd)
Data link connector for C0NS;ILT

-

Engine speed signal

AT mode SW
(2WD)

&

-

i?

Throttle
~otalcontroi
2&
2
-tp
o
r - s

,

''

10

7

33

'

I

19

1
I

38

-

1

I

'

E ELM

I I Throttle msition sensor

Vehicle speed sensor 1

-

Turbine sensor

Throttle position SW
2

r

16

-I

L

I

TO IGN SW

PNPSW

To starter relay
1-4

34

- 27
A

ID
n

IGN

I

OFF 1ND.L

IOA

I

AT>
I

i

T

26

22

Shift CIU

ATN 1987D

TROUBLE DIAGNOSES
Control Unit Input/Output Signal Specifications
Refer to EC section ("ECM.TCM or ECM Input/Output Signal
Reference Value").

USING CONSULT
-

Monitor item

Indication value

Throttle position sensor
--

AK fluid temperature sensor
--

-

-

I

---

-

Approx. 0.4

- 4.OV

Appro~.1.5

- 0.5V

Operating status
Throttle fully - closed to fully-open

I

-

A/T fluid: Appro~.20 80°C

ON

Overdrive control switch: OFF

OFF

Overdrive control switch: ON

Line pressure duty

29 - 94%

Low pressure - High pressure

Lock-up duty

4 - 94%

Lock-up released - Lock-up engaged

Lever switch

USING CIRCUIT TESTER

Terminal
No.'
.-

1
Throttle position sensor
signal

-

25 (25)
32 (48)

Specifications

-

Refer to EC section ("ECM-TCMor
ECM Input/Output Signal Reference
Value*).

Engine speed signal

5 (39)

24 (I0)
31 (19)

Condition

Power source

1

Ground

28 (I4)

Shift control signal SB1
(Except RB20DE)

29 (40)

Vehicle speed sensor 2
(vehicle speed signal in
speedometer)

*: Each number in parenthesis (

After engine warm-up, depress accelerator pedal
slowly.

Voltage increases gradually in
response to throttle position.
Fully-closed throttle
: Approx. 0.5V
Fully-open throttle
: Approx. 4.2V

Turn ignition switch ON.

Battery voltage

Turn ignition switch OFF.

Approx. OV

Turn ignition switch ON.

Approx. OV

-

-

When vehicle is moved at 2 to 3 km/h for more than Voltage varies approx. between OV
1 m.
and 4.5V intermittently.

) shows the terminal No. for TCM (RB25DE).

TROUBLE DIAGNOSES
Control Unit InputlOutput Signal Specifications
Terminal
No.'

Specifications

Operation or measurement condition

Battery voltage

After engine warm-up, release accelerator pedal.

Idle switch
(in throttle position switch)

After engine warm-up, depress accelerator
pedal.

Approx. OV
Battery voltage

Selector lever: "1" &?"2 position

PNP switch "1" position
(c > is used for M-AT.)

Battery voltage

Selector lever: 2" <3*>
position
Selector lever: Except "Y4'3'5 position
Selector lever; "Dn position

PNP switch "Dmposition

-

gz

A ~ ~ r oO
xV.

Selector lever; Exce~t"1" <"2">~osition

PNP switch "2" <"33 position
(c > is used for M-AT.)

@

Approx. OV
Battery voltage

-

Selector lever: Except "Dmposition

Approx. OV

Selector lever: "Nn, "P" position

Approx. OV

RR"
U"

Neutral signal
(PNP switch "N-P" position)

Selector lever: "Rn ~osition

PNP switch "Rn position
Full switch
(in throttle position switch)
Sensor ground

Approx. 4.7V

Selector lever: Except "N", "Pn position
.

I Selector lever: Except "Rn position

II

1

After engine warm-up, depress accelerator pedal
partially. (Throttle opening: More than 50%)
- -

-

-

-

I

Turn ignition switch ON.

Throttle position sensor
power

- -

---

When vehicle cruises at 30 k w h (Inspected in AC position)
When vehicle parks (Inspected in AC position)

Turbine sensor
(Except RB20DE)

When turbine rotates at approx. 1,000 rpm

Approx. OV

EL

More than approx. 1V
(Voltage increases in
resDonse to vehicle meed.)

80

rn fluid temperature sensor

5
3

-

-- -

-

---

Approx. 0.1 V

A / l fluid temperature: Approx. 20°C

Approx. 1.5V

A/T fluid temperature: Approx. 80°C

Approx. 0.5V

c
V)

A f r mode switch (POWER)
(Except M-AT)

I

Approx. OV

I

,

AIT mode switch: POWER

..c
a, A/T mode switch: Except POWER
-

Battery voltage

Y

Approx. OV

Shift control signal DB1
(Except RB20DE)
Shift control signal DB3
(Except RB20DE)

z

Overdrive control switch
(Except M-AT)

g- 0
..-=
c
& .&!
- 5

Overdrive control switch: ON (Contact: OFF)

Battery voltage

Overdrive control switch: OFF (Contact: ON)

Approx. OV

Shift control signal DB2
(Except RB20DE)

A/T mode switch (SNOW)
(Except TCS)
Stop lamp switch

A/l mode switch: SNOW

.z

A/l mode switch: Except SNOW

w
.-

c J = T).g Depress brake pedal.

2

'

Release brake pedal.

CONSULT (RX) signal
CONSULT (TX) signal
*: Each number in parenthesis (

) shows the terminal No. for TCM (RB25DE).

AT-11

@z!.

- 5.5V

Shift control signal SB2
(Except RB20DE)
Vehicle speed sensor 1
(Output shaft speed sensor)

i%

Approx. OV
Ao~rox.OV
Approx. 4.5

Turn ignition switch OFF.

ST

Approx. OV
Battery voltage

After engine warm-up, release accelerator pedal. I
Turn iqnition switch ON.
- -

Batterv voltaae

Battery voltage
Appro~.OV
Battery voltage
Approx. OV

TROUBLE DIAGNOSES
Control Unit InputlOutput Signal Specifications

(Cont'd)
Terminal
No.'

Operation or measurement condition

Specifications

Total control signal
(multiple communication)
(Except RB20DE)
I

Power supply (Backup)

Line pressure solenoid

ITurn ignition swi?ch ON.

Overrun clutch solenoid

POWER indicator lamp (4AT)
Dual rnatic AK waming lamp
(M-AT)

Lock-up solenoid

-

-

Turn ignition switch OFF.

5

After engine wan-up, release accelerator pedal.

r

After engine warm-up, depress accelerator pedal

w

Line pressure solenoid
(dropping resistor circuit)

I

I

0

5

Battery voltage
Battery voltage
Approx. 1.5 - 3.OV
Approx. OV
Approx. 4 - 14V

After engine warm-up, release accelerator pedal.
.

After engine warm-up, depress accelerator pedal

Approx. OV

s fullv.
..->

Refer to EC section
("ECM.TCM or ECM Input1
Output Signal Reference
Value").

.

Battery voltage

When overrun clutch solenoid operates
When overrun clutch solenoid does not operate

Approx. OV

When POWER indicator lamp is tumed on (W
mode switch: POWER), or dual matic
warning lamp is turned on

Approx. OV

When POWER indicator lamp is tumed off (NT
mode switch:Except POWER), or dual matic A/T
I warning lamp is turned off

I When vehicle is locked UD
When vehicle is not locked up

Battery voltage

1
I
I

I

When shift solenoid A operates
(Driving in 'Dln or "D,")

Approx.
8 - 15V
..
Approx. OV
Battery voltage

When shift solenoid A does not operate
(Driving in "D," or "D,")

Approx. OV
I

Shift solenoid B

*: Each number

parenthesis (

When shift solenoid B operates
(Driving in 'Dln or D
' ,")
When shift solenoid B does not operate
(Driving in "D," or "Dd)

) shows the terminal No. for TCM (RB25DE ).

Battery voltage
Approx. OV

TROUBLE DIAGNOSES
Shift Pattern
RB20DE ENGINE (4AX03 model)
"D" position normal mode (Overdrive control switch: ON)

Vehicle speed kmlh

"D" position POWER mode (Overdrive control switch: ON)

- - -------

Down-shift

Vehicle speed km/h

"D" position SNOW mode (Overdrive control switch: ON\

I
I

- Kickdown area

-

Vehicle speed km/h
ATN 1988D

AT-13

TROUBLE DIAGNOSES
Shift Pattern (Cont'd)
RB25DE ENGINE (4AX01 model)
"D" position normal mode

Vehicle speed krnh

"D" position SNOW mode
3

Kickdown area

------- Down-shift
10

20

30

40

50

60

70

80

90 100 110 120 130 140 150 160 170 180
Vehicle speed krnh
ATN 1 989C

RB25DET ENGINE (4AX00 model)

"D" ~ositionnormal mode

Vehicle speed kmfh

TROUBLE DIAGNOSES

Shift Schedule
VEHICLE SPEED WHEN SHIFTING GEARS
RB20DE engine (4AX03 model)
Throttle opening

I

Shift pattern

1

Vehicle meed km/h
D14D2

Full throttle

Half throttle

I

D2*D3

I

D34D4

-

1

I

D4-1D3

D3*D2

I

D24D1

Normal

46 - 50

91 - 99

149 159

144 - 154

86 - 94

41 - 45

Power

46 - 50

91 - 99

149 - 159

144 - 154

86 - 94

41 - 45

Normal

31 - 35

62 - 68

71 - 79

41 - 45

6-10

Power

43 - 47

84 - 90

135 - 143

83 - 91

45 - 51

6 - 10

101 109

RB25DE engine (4AX01 model)
Throttle opening

I Shift pattern I

I

Full throttle

Vehicle s ~ e e dkm/h

I

I

DJdD4

I

1

D4*D3

D3*02

-

1

D24D1

-

Normal

50 - 54

101 - 109

157 - 167

151 - 161

96 104

40 44

Power

50 54

-

101 - 109

157 - 167

151 - 161

96 - 104

40 - 44

Normal

32 - 36

61 - 67

104 - 112

80 - 88

37 - 43

6-10

Power

42 - 46

85 - 91

135 - 143

87 - 95

45 - 51

6-10

I

Half throttle

D2-rD3

RB25DET engine (4AX00 model)
Throttle opening

Vehicle speed krnlh

Shift pattern
D14D2
-

Full throttle

Half throttle

I

D2*D3
-

I

D3*D4

I

D4*D3
--

- -

-

I

D3*DZ

I

D2+D1
--

Normal

45 - 49

103 - 111

167 - 177

161 - 171

98 - 106

Power

45 - 49

103 - 111

167 - 177

161 - 171

98 - 106

- 44
40 - 44

Normal

31 - 35

74 80

-

111 - 119

63 - 71

32 - 38

6-10

Power

39 - 43

84 - 90

133 141

-

98 - 106

50 - 56

6 - 10

40

VEHICLE SPEED WHEN PERFORMING LOCK-UP
Engine type

RB20DE

RB25DE

RB25DET

4AX03

4AX01

4AX00

Closed throttle

31 - 39

34 - 42

Half throttle

-

-

-

Closed throttle

23 - 31

25 - 33

59 - 67

Half throttle

101 - 109

104 - 112

121 - 129

Closed throttle

44 - 52

48 - 56

55 - 63

Half throttle

120 - 128

118 - 126

128 - 136

Closed throttle

35 - 43

38 - 46

52 - 60

Half throttle

110 - 118

107 - 115

103 - 111

Model No.
Lock-up ON km/h
D,
speed
Lock-up OFF k m h

Lock-up ON km/h
D4

speed
Lock-up OFF kmlh

Closed throttle: Throttle opening is 118 or below, and idle switch is turned OFF.
Half throttle: Throttle opening is 418.

--

TROUBLE DIAGNOSES
Basic Inspection
Arr FLUlD
Check A/T fluid for leakage and fluid level.
Check A/Tfluid status.

SHIFT CONTROL
Check and adjust A/T position.

Line Pressure Test

nt

I

\-Test port for "D", "2",
and "1" positions

I

'Test port for "I?"position

1. Check engine oil level. If necessary, add oil.
2. Drive vehicle for approximately 10 minutes until A/T fluid
reaches normal operating temperature between 50 and 80°C,
fluid.
and check A/T fluid level. If necessary, add
When ambient temperature is 20°C, A/T fluid operating temperature usually becomes between 50 and 80°C for approximately 10 minutes' drive in urban traffic.
3. After warming up IW', remove fluid pressure detection plug,
and install pressure gauge (Special Service Tool: ST2505
S001) to corresponding line pressure port.
CAUTION:
0
To remove or install the fluid pressure detection plug, use
standard socket wrench (width across flat: 12 mm).
Detection plug should not be reused because thread-lock
compound i s applied to the plug.
4. Set parking brake and block wheels.
5. Start engine and measure line pressure at idle and stall speed.
CAUTION:
When measuring line pressure, depress brake pedal fully.
When measuring line pressure at stall speed, refer to
"Stall Test" (AT-17).

Line pressure specification
Line pressure MPa (kg/crn2)
I
p

Engine speed
At idle speed
At stall speed

I

-

"RWposition

-

0.58 0.62 (5.9 - 6.3)

-

1.71 1.78 (17.4

- 18.2)

"On,'Z", "1" positions (4AT)
"Dm,"3", "2" positions (M-AT)
0.47

1.22

-

- 0.51 (4.8 - 5.2)
1.29 (12.4

- 13.2)

TROUBLE DIAGNOSES
Line Pressure Test (Cont'd)
JUDGEMENT OF LINE PRESSURE TEST
Possible causes

Judgement

Line pressure is low in all
positions.

Pressure supply system malfunction or low oil pump output
Examples:
0 Oil pump wear
Control piston damage
Pressure regulator valve or plug sticking, and weak spring
Fluid pressure leakage between oil strainer and pressure regulator valve through oil

Eg

Pump
Low idle speed
At idle
speed

Line pressure is low in particular position.

After line pressure is supplied from manual valve, fluid pressure may leak between devices
or circuits of corresponding position.

Line pressure is high.

Malfunctions of sensors or pressure regulation function.
Examples:
Misadjustment of throttle position sensor
PJT fluid temperature sensor damaged
Poor operation of line pressure solenoid (stuck with OFF status, clogged filter, or open
harness)
Pressure modifier valve sticking
Pressure regulator valve or plug sticking

Malfunctions of sensors or pressure regulation function
Examples:
Misadjustment of throttle position sensor
Line pressure increase is
TCM, ECM.TCM damaged
poorer than that measured at
Poor operation of line pressure solenoid (stuck or shorted with ON status)
idle speed.
Pressure regulator valve and plug sticking
Pressure modifier valve sticking
Pilot valve sticking and pilot filter clogged

Line pressure increases but
does not reach specification.

Malfunctions of pressure supply system, sensors, or pressure regulation function
Examples:
Misadjustment of throttle position sensor
Control piston damage
Poor operation of line pressure solenoid, and filter sticking or clogged
Pressure regulator valve and plug sticking
Pressure modifier valve sticking
Pilot valve sticking and pilot filter clogged

Line pressure is low in particular position.

After line pressure is supplied from manual valve, fluid pressure may leak between devices
or circuits of corresponding position.

At stall
speed

Stall Test
1.
2.

3.
4.

Check engine oil level. If necessary, add oil.
Drive vehicle for approximately 10 minutes until A/T fluid
reaches normal operating temperature between 50 and 80°C,
and check A/T fluid level. If necessary, add AfT fluid.
When ambient temperature is 20°C, A/T fluid operating temperature usually becomes between 50 and 80°C for approximately 10 minutes' drive in urban traffic.
Set parking brake and block wheels.
Statt engine, depress brake pedal, and move selector lever to
"D" position.

E
l

1

ST
F%

EILA
la

sf$

TROUBLE DIAGNOSES
Stall Test (Cont'd)
Depress accelerator pedal gradually while depressing brake
pedal.
6. Read stall speed quickly, and immediately release accelerator
pedal.
CAUTION:
Do not depress accelerator pedal for more than 5 seconds
when testing.
7. Move selector lever to "N" position.
8. Cool down
fluid.
CAUTION:
Run engine at idle for at least one minute.
Specification:
RB20DE 2,300 2,500 rpm
RB25DE 2,350 2,550 rpm
RB25DET 2,920 3,170 rpm
5.

-

-

JUDGEMENT OF STALL SPEED

7

Lever position

Possible causes
Forward clutch
Forward one-way clutch
Low one-way clutch

7-

0

0

Low & reverse brake
Reverse clutch

0

I

Engine and torque converter one-way clutch
Line pressure circuit (line pressure drop), forward clutch, low one-way clutch
and forward one-way clutch
Line pressure circuit (line pressure drop), reverse clutch and forward clutch
Forward clutch, low one-way clutch, forward one-way clutch, reverse clutch
and forward clutch
Line pressure circuit (line pressure drop), forward clutch, low one-way clutch,
forward one-way clutch, reverse clutch and forward clutch

Stall
speed
status

0

0

0

0: Within stall speed specification
H: Higher than stall speed specification
L: Lower than stall speed specification

0

Clutches and brake are normal except high clutch, brake band, and overrun
clutch. (However, status of high clutch, brake band, and overrun clutch canncIt
be confirmed by stall test.)

TROUBLE DIAGNOSES

DESCRIPTION
CONSULT indicates operation timing of each solenoid such as electrical shift timing and lock-up timing.
Therefore, when there is a definite difference between shift timing detected from shift shock (or engine
speed variation) and the one indicated by CONSULT, mechanical parts other than solenoids and sensors
(including hydraulic circuit) may be malfunctioning. In this case, check the mechanical parts using applicable diagnostic procedures.
Shift schedule (which implies gear position) displayed on CONSULT and that indicated in Service Manual
may differ slightly. This occurs because of the following reasons:
Actual shift schedule has more or less tolerance or allowance.
Shift schedule indicated in Service Manual refers to the point where shifts start, and gear position displayed on CONSULT indicates the point where shifts are completed.
Shift solenoid valve A or B (ON/OFF) is displayed on CONSULT at the start of shifting. Gear position
is displayed upon completion of shifting (which is computed by TCM).
To make sure the part No. of ECM-TCMon CONSULT, touch "ENGINE" to verify "C/U PART NUMBER".

SELF-DIAGNOSIS PROCEDURE
Refer to "CONSULT Instruction Manual - Supplement" in details.
1. Turn ignition switch OFF.
2. Connect CONSULT connector to data link connector.
3. Start engine.
4. Touch "START', "NT and "SELF-DIAG RESULTS" sequentially on CONSULT screen.
5. Self-diagnosis results are displayed on the screen.

TROUBLE DIAGNOSES
CONSULT (Cont'd)
SELF-DIAGNOSTIC RESULTS MODE
Diagnostic item

1

Diagnostic item is detected when...
-

I

--

Inspection item

-

VHCL SPEED SEN.A/T

TCM does not receive vehicle speed sensor 1 signal due to
open circuit, etc.
TCM receives improper signal during driving.
After ignition switch is turned ON, vehicle speed sensor 2
receives improper signal until vehicle starts to run.

Vehicle speed sensor 1 circuit

VHCL SPEED SEN.MTR

TCM does not receive vehicle speed sensor 2 signal due to
open circuit, etc.
TCM receives improper signal during driving.

Vehicle speed sensor 2 circuit

TCM detects folfowing conditions during driving (Except N and P
positions).
0 Excessively high throttle position sensor signal voltage
Excessive1 low throttle position sensor signal voltage with idle
switch OF; or full switch ON

Throttle position sensor circuit

THROTTLE POSl SEN

Shift solenoid A circuit

SHIFT SOLENOIDN A

Shift solenoid B circuit

SHIFT SOLENOIDN B
Specified voltage is not applied to solenoid due to open and/or
short circuit.

OVERRUN CLUTCH SN
TIC CLUTCH S O W
LINE PRESSURE S N

I
I

Lock-up solenoid circuit
Line pressure solenoid circuit
0

Excessively low supply voltage to TCM during driving
Excessively high si nal voltage of AIT fluid temperature sensor
fluid temperature) during driving
(excessively low
This message is displayed only when malfunction occurs
with ignition switch ON, and does not have memory function.

fluid temperature sensor circuit,
TCM power supply circuit, or
throttle position sensor power supply circuit

Excessively low engine speed during driving

Engine speed signal circuit

TCM does not receive input shaft speed sensor signal due to
open circuit, etc.
TCM receives improper signal during driving.

Turbine sensor circuit

d

BATT/FLUID TEMP SEN

ENGINE SPEED SIG

I

TURBINE SENSOR
(Except RB20DE)

0

SHIFT SOLENOIDN C
(Except RB20DE)

Overrun clutch solenoid circuit

0

TCM does not receive shift solenoid A pressure detection switch Shift solenoid A pressure detection
switch circuit
signal due to open andfor short circuit.

MANUAL MODE SW
(Except RB20DE)

TCM does not receive proper manual mode switch signal due to Manual mode switch circuit
open and/or short circuit.

ENGINE BRAKE C/U'1
(Except RB20DE)

Shift control unit does not operate properly due to open and/or
short circuit of each input/output signal wire.
Malfunction occurs in shift control unit.

'INITIAL START*

Power supply to TCM is shut down, and self-diagnostic memory
function is canceled due to battery removal, etc.

CONTROL UNIT (RAM)
CONTROL UNIT (ROM)

I

I

Each signal wire circuit connected
to shift control unit

Malfunction is detected in TCM memory (RAM) function.
Malfunction is detected in TCM memory (ROM) function.

'1 : Indicates shift control unit.

DATA MONITOR PROCEDURE
Refer to "CONSULT Instruction Manual - Supplement" and "CONSULT Service Manual - Supplement" in details.
1. Turn ignition switch OFF.
2. Connect CONSULT connector to data link connector.
3. Turn ignition switch ON.
4. Touch "START', ' ' A T and "DATA MONITOR" sequentially on
CONSULT screen.

TROUBLE DIAGNOSES
CONSULT (Cont'd)
DATA MONITOR MODE (M)

1

I
Display

Item

Monitor item
ECU
Main
input
signals
signals

Remarks

I
VHCUS SE.A'T
[kmlh] or [mph]

Vehicle speed sensor 1 ( A l l )
(Revolution sensor)

-

VHCUS SE,MTR
[kmk] or [rnph]

Vehicle speed sensor 2
(Meter)

Throttle position sensor

ITHRTLPOS SEN

I

PI
AT fluid temperature sensor

,

A

FLUID TEMP SE

Engine speed

ENGINE SPEED
[rpml

Turbine revolution sensor

TURBINE REV
[rpml

Overdrive control switch

OVERDRIVE SW
[ONIOFFJ

PIN position switch

PIN POSI SW
[ONlOFF]

R position switch

R POSITION SW
[OWOFF]

D position switch

D POSITION SW
[ON/OFF]
2 POSITION SW
[ONIOFF]

1 position switch

1 POSITION SW

[ONIOFF]
ASCD cruise signal

ASCD.CRUISE
[ONIOFF]

I
I

Vehicle speed display may not be
accurate under approx. 10 kmlh
(6 mph). It may not indicate 0
kmlh (0mph) when vehicle is stationary.

Throttle position sensor signal
voltage is displayed.

ONIOFF state computed from
signal of PIN position SW is
displayed.

I

ONIOFF state computed from
signal of R position SW is displayed.
ONIOFF state computed from
signal of D position SW is displayed.

X

I
I

ONIOFF status, computed from
signal of 2 position SW, is displayed.
signal of 1 position SW, is dis-

X

Kickdown switch

KICKDOWN SW
[ONIOFq

X

POWERSHIFT SW
[ONIOFF]

X

.

displayed.
ON ... Cruising state
OFF ... Normal running state

ASCD is mounted.

Status of ASCD OD release
signal is displayed.
ON ... OD released
OFF ... OD not released

This is displayed even when no
ASCD is mounted.

ONIOFF status, computed from
signal of kickdown SW, is displayed.

This is displayed even when no
kickdown switch is equipped.

ONIOFF status, computed from
signal of HOLD shift SW, is displayed.

CLOSED THUSW
[ONIOFF]

ONIOFF status, computed from
signal of closed throttle position
SW, is displayed.

Wide open throttle position switch WIO THRUP-SW
[ONIOFq

ONIOFF status, computed from
signal of wide open throttle
position SW, is displayed.

,

Engine speed display may not be
accurate under approx. 800 rpm.
It may not indicate 0 rpm even
when engine is not running.

ONIOFF state computed from
signal of overdrive control SW
is displayed.

ASCD.OD CUT
[ONIOFF]

t

Vehicle speed computed from
signal of vehicle speed sensor
is displayed.

Error may occur under approx.
Turbine revolution computed
from signal of turbine revolution 800 rpm and will not indicate 0
sensor is displayed.
rpm even if engine is not running.

ASCD OD cut signal

A/T mode switch

When racing engine in "Nn or "P"
position with vehicle stationary,
CONSULT data may not indicate
0 kmlh (0 mph).

Source voltage of TCM is displayed.
Engine speed, computed from
engine speed signal, is displayed.

1

2 position switch

Vehicle speed computed from
signal of revolution sensor is
displayed.

AlT fluid temperature sensor
signal voltage is displayed.
Signal voltage lowers as fluid
temperature rises.

Battery voltage

Closed throttle position switch

Description

TROUBLE
CONSU

I
Display

Shift solenoid A

(Cont'd)

Monitor item
input
signals

SHlFT S N A

Main
signals

Description

-

Indicates check signal (reentrant signal) status for TCM
control signal output. ONIOFF
status of shift solenoid is not
changed when thermal insulation or short-circuit occurs in
these valves.

Shift solenoid B
[ONIOFF]
Overrun clutch solenoid
Overrun clutch solenoid 2 (Excep
RB20DE)

-

OVRRUNIC S N
[ONOFF]
OVRRUN/C SN2
[ONIOFF]

HOLD!SNOW switch

HOLD SW
[ONIOFFI

Manual mode switch (Except
RB20DE)

MANU MODE SW
[ONIOFFJ

1

Gate side contact in mznual
mode switch
-

Non-gate side contact in
manual mode switch
X

UP (+) side contact in manual
mode switch
DOWN (-) side contact in
manual mode switch

DOWN switch (Except RB20DE)

DOWN SW
[ON/OFFl

X

Non-shift switch (Except
RB20DE)
Brake switch

NON SHlFT SW
[ONlOFF]

-

-

Shift solenoid valve A (P switch)
(Except RB20DE)

-

A/T mode switch SNOW mode

X

Non-manual mode switch (Excepi NONM MODESW
[ONIOFF]
RB20DE)
UP SW
UP switch (Except RB20DE)
[ONOFF]

--

BRAKE SW
[OWOFF]
SHlFT S N A

I

I

Stop lamp switch
Shift solenoid A pressure detection switch
Gear position data used for
computation by TCM, is displayed.
Selector lever position data,
used for computation by TCM,
is displayed.

Gear position
----

-

-

I
I

Selector lever position

SLCT LVR POSl

Vehicle speed

VEHICLE SPEED
[kmlh] or [mph]

Throttle position

THROTTLE POSl

Line pressure duty

LINE PRES DTY

I

TCC S N DUTY

I

-

Torque converter clutch soienoid
valve duty

Shift solenoid valve A

Shift solenoid valve El

SHIFT S N B

Overrun clutch solenoid valve

OVERRUNIC S N

Power shift lamp

>OWER SFT LMP

I
I

--

-

Voltage
-

Pulse

X: Applicable
-: Not applicable

Remarks

I

-

Vehicle speed data, used for
computation by TCM, is displayed.
Throttle position data, used for
computation by TCM, is displayed.
Control value of line pressure
solenoid valve, computed by
TCM from each input signal, is
displayed.

-

A specific value used for control
is displayed if fail-safe is activated due to error.

A specific value used for control
is displayed if fail-safe is activated due to error.

- -

Control value of torque converter clutch solenoid valve,
computed by TCM from each
input signal, is displayed.
.-control value of shift solenoid
valve A, computed by TCM
from each input
. signal,
- is displayed.
Control value of shift solenoid
valve 6, computed by TCM
from each input signal, is displayed.
Control value of overrun clutch
solenoid valve computed by
TCM from each input signal is
displayed.
D

Control status of TCM power
shift lamp

Control value of solenoid is displayed even if solenoid circuit is
disconnected.
The "OFF signal is displayed if
solenoid circuit is shorted.

TROUBLE DIAGNOSES

Self-diagnosis
DESCRIPTION
If malfunction should occur in electrical systems, turning ignition switch ON lights M mode switch POWER
indicator lamp (M-AT Dual matic AfT warning lamp) for 2 seconds, and then flashes the indicator lamp for 8
seconds. If malfunction does not occur, A/T mode switch POWER indicator lamp (M-AT Dual matic A/T warning lamp) is turned on for 2 seconds upon turning ignition switch ON. To locate and display the malfunctioning part, output the trouble information memory and flash A/T mode switch POWER indicator lamp (M-AT Dual
matic A/T warning lamp) by inputting self-diagnostic startup signal.

SELF-DIAGNOSIS PROCEDURE
Warm up engine.
Repeat ON-OFF cycles of ignition switch for more than once, and turn it OFF at last.
Move A/T mode switch to AUTO, and turn overdrive control switch to O/D ON.
Turn ignition switch ON with selector lever in "Pn position, and ensure POWER indicator lamp is turned on
for 2 seconds.
5. Turn ignition switch OFF.
6. Move selector lever to "D" position.
7. Turn overdrive control switch O/D OFF.
8. Turn ignition switch ON.
9. Move selector lever to "2" position.
10. Turn overdrive control switch OID ON.
11. Move selector lever to "I" position.
12. Turn overdrive control switch O/D OFF.
13. Depress accelerator pedal fully, and release it.
14. Read flashing status of POWER indicator lamp to complete self-diagnosis procedures.

1.
2.
3.
4.

M-AT
1. Warm up engine.
2. Repeat ON-OFF cycles of ignition switch for more than once, and turn it OFF at last.
3. Turn ignition switch ON with selector lever in "P" position, and ensure dual matic PJT warning lamp is turned
on for 2 seconds.
4. Turn ignition switch OFF.
5. Depress brake pedal, release accelerator pedal, and then move selector lever to "D" position.
6. Turn ignition switch ON.
7. Release brake pedal, and move selector lever to "3" position.
8. While depressing brake pedal with left foot, depress accelerator pedal fully with right foot, and move
selector lever to "2" position.
9. Read dual matic A/T warning lamp indication to complete self-diagnosis procedures.

Gc

TROUBLE DIAGNOSES
Self-diagnosis (Cont'd)

=-I=

\\

I1

//

//

11

11

\\

or
\\

11

//

1,

//

=mj=
\\

= 2.5 sec. ,t = 2.0 sec. ,t = 1.0 sec.

If malfunction occurs in electrical system, indicator lamp stays on
longer at corresponding circuit.
Malfunctioning unit and circuit

Flashing
order

RB20DE
10 judgement flashes.

Stan signal

POWER INDICATOR LAMP OR DUAL MATIC A/T
WARNING LAMP INDICATION

RB20DE

Malfunctioning unit and circuit
I

Except RBPODE
13 judgement flashes.
signal
Malfunctioning unit and circuit
I

Except RB20DE

1

Vehicle speed sensor 1

2

Vehicle speed sensor 2

3

Throttle position sensor

4

Shift solenoid A

5

Shift solenoid B

t5

1

7

1

9

I1

10

12
13

No flashes

1
I
1

Overrun clutch solenoid
Lock-up solenoid
W fluid temperature sensor, TCM power supply, or throttle position sensor power supply
Engine speed signal
Line pressure solenoid

-

-

-

I
I
I

Turbine sensor
Line pressure solenoid
Total control signal

-

Shift control unit

PNP switch, idle switch/full switch
Overdrive control switch

Stop lamp switch

When indicator lamp repeats flashing in 4 Hz, the following malfunctions
may exist: (Insufficient memory backup powerflCM repiacement1Battery
has been disconnected for prolonged periodllow battery power)

HOW TO ERASE SELF-DIAGNOSTIC RESULTS
To facilitate cause investigation of malfunction that is less likely to
reappear, the TCM always stores self-diagnostic results during customer operation. This memory cannot be erased even if ignition
switch is turned ON and OFF repeatedly. To erase the seif-diagnostic results, turn ignition switch OFF after self-diagnosis has
been performed, or use "ERASE" function of CONSULT.

TROUBLE DIAGNOSES

Symptom Chart
Malfunctions

Sharp shock in
hifting

Shifting

inspection item
Fluid level and status
Control linkage
PNP switch (short/open circuit)
Throttle ~ositionsensor (installed)
I Vehicle weed sensor
I Enaine meed sensor
A/T fluid temperature sensor
Engine idle speed
Line Dressure
Control valve assembly
Shift solenoid A
Shift solenoid B
Line pressure solenoid
Lock-up solenoid
Overrun clutch solenoid
Accumulator N-D
Accumulator 1-2
Accumulator 2-3
Accumulator 3-4 (N-R)
Ignition coil and starter motor
Overdrive control switch

I AfT mode switch (AUTO)
Torque converter

1 Oil pump

I Reverse clutch
I High clutch
I Forward clutch

I Forward one-wav clutch
I Overrun ciutch
1 Low one-wav clutch
I Low reverse brake
Brake.band (including servo)
Parking linkage

Engine brake
applied

Slip (Racing)

Shifting

erator pedal

.-

Shifting

Symptom Chart (Cont'd)
Malfunctions

No shifting

I

I Shifting

Greater
noise

-

(I)

C

0
.c
.
.(I)
0

a
v

-CU

Inspection item

n

Fluid level and status

1

1

2

2

Control linkage
PNP switch (shortlopen circuit)
Throttle position sensor (installed)
Vehicle speed sensor

I Engine speed sensor

-

-T

o 1 Control valve assembly
.Shift solenoid A
L

.

'

- --

4

Shift solenoid 6

I

cut
--,
Line pressure solenoid
.-t

?

3
4

1

5

Lock-up solenoid

6 Overrun clutch solenoid

3

Accumulator N-D

I 1-

1 Accumulator 1-2
Accumulator 2-3
Accumulator 3-4 (N-R)
Ignition coil and starter motor

I 1-

I Overdrive control switch
A/T mode switch (AUTO)

I

A/T mode switch (POWER)

I A i l mode switch (SNOW)

I Torque converter
1 Oil pump
0

I
I

I

--

I
I

-

-

- Reverse clutch

'g
High clutch
a4

%IForward clutch

.-a Forward one-way clutch
-

$
a,

-

Overrun clutch
Low one-way clutch

O Low reverse brake

Brake band (including servo)
Parking linkage

6

I

I
8
7

7

1

TROUBLE DIAGNOSES
Symptom Chart (Cont'd)
Malfunctions
vj

t
0
.-

.
L

2

-a,
8
0

([I
L

0
0

Q

&
0

a,
a,

Q
V)

5

Control linkage
PNP switch (shortfopen circuit)
Throttle position sensor (installed)
Vehicle speed sensor
L

I

I

I

I

I

I

I

1

1 1 1 2 1 3
2
1
4

Engine
speed sensor
AIT fluid temperature sensor
Engine idle weed
Line pressure

Control valve assembly
Shift solenoid A
Shift solenoid B
Line pressure solenoid
Lock-up solenoid
Overrun clutch solenoid
u
Accumulator N-D
Accumulator 1-2
Accumulator 2-3

I

I
I

3

3

4

4

I

I

I

-

1

I

Torque converter
Reverse clutch
High clutch

Brake band (including servo)
Parking linkage

([I

t
C
.-

r
([I

c
.
V)
c
.

-z

2
C

.s
5
z

a

.-

a,

0
C
W

ng

% - ( [ I

0,
C

a

V)o
02
nu

V)

i!

C

a0

0-

&
5
0 g E

([I

C O
--t
V)

a

aa

V)

gz
a-

-6

2
-

3
-

2 1
-

9

([I

a

a,

2

0

c
.

0
C

-xi

V)

a,

([I

C

V)

0

a,

a,

.-C

2

8
1
-

1

-

-

2

3
-

2
3
-

-

-

I1
0
6
-

8

+-

0

s

1
-

-a
-

u

c 50

- 6 $2
-

7
-

Forward clutch

.-a. Forward one-way clutch
$0, Overrun clutch
? Low one-way clutch
3=
O Low reverse brake

Q

7J
C

-

4
-

Overdrive control switch

2
C

5.j
2.z

c

0
7J

5
-

Accumulator 3-4 (N-R)
Ignition coil and starter motor

.-tg

=?
-a 0
,

n 2

r

-I

2

0

V)

zl

I

.V)

B-

;
2
t o

.-c

L

Fluid level and status

.-0

0

.-E
X
Inspection item

c

-

1
-

-

I
I

-

-

-

i

g
I

-

4
-

-

-

9
8
-

-

-

-

-

-

-

cn

C
W

BRAKE SYSTEM
SECTION

BR

CONTENTS
ANTI-LOCK BRAKE SYSTEM ........................................ 2
Fail-safe Function........................................................2
System Diagram .......................................................... 2
Circuit Diagram ............................................................ 3
Component Parts Location .......................................... 4
Control Unit Input/Output Signal Specifications..........5
Precautions for Trouble Diagnosis ..............................7
Basic Inspection...........................................................7
CONSULT ....................................................................8
Self-diagnosis ...........................................................-14
TCSIABS SYSTEM ........................................................ 17
System Description.................................. ..................17
System Diagram ........................................................ 18

Component Parts Location ........................................19
Circuit Diagram .......................................................... 20
Control Unit InpuVOutput Signal Specifications ........21
Precautions for Trouble Diagnosis ............................26
Basic Inspection........................................................-26
CONSULT for TCS/ABS Control Unit Control
System ......................................................................-27
Self-diagnosis for TCSfABS Control Unit Control
System ......................................................................-34
CONSULT for Throttle Control Unit Control
System ......................................................................-37
Self-diagnosis for Throttle Control Unit Control
System ......................................................................-41

ANTI-LOCK BRAKE SYSTEM
Fail-safe Function
If any malfunction is detected in the system, the ABS warning lamp
in the instrument panel is turned on with the ABS deactivated and
the vehicle's brake system reverts to normal operation.

System Diagram

ABS control uni:

-

Actuator
I

1

Front right inlet solenoid valve
Front right outlet solenold valve
Front lett rnlet solenoid vJve

Front lefl wheel sensor
Front left cutlet solenoid valve
r

i

Rear inlet solenold valve

Contrd circuit
Rear wheel Sensor

Rear outlet solenoid valve

-A
Faii-safe circuit

Motor (motor relay)

--

Actuator relay

TrO~blediagnos~s
circuit

ABS warning lamp

' Data ltnk connector

L

for CONSULT

I

ANTI-LOCK BRAKE SYSTEM
Circuit Diagram

To combination meter

I

Stop lamp SW

ABS wamlng lamp

I

9
i

stop lamp

.

Motor relay

FL

I
Wheel
sensor
connector

i

&

1

1

:

I

ABS CIU

FR

FR OUT S N

Rea

To data link connector for CONSULT

Actuator relay

fm

1 "8RX

Rear OUT S N
Rear IN S N

12

27

10

ABS actuator :

ABS actuator connector

ABS C N connector

FIL - 8
30A

ANTI-LOCK BRAKE SYSTEM
Component Parts Location

/'

Booster

Master

ear wheel sensor

@ ABS control unit
Front right wheel sensor

a ABS actuator

Front left wheel sens&

-/

LH side of engine compartment

dR/Y

.. .

Front right wheel sensor connector

!aIn the instrument panel on

A

ANTI-LOCK BRAKE SYSTEM
ABS control unit connector

Control Unit InputlOutput Signal Specifications
USING CIRCUIT TESTER
To perform the following inspection, the ignition switch should be
turned ON with ABS control unit connector and actuator connector
properly connected.

Terminal No.

Item

Specifications*l

Battery

Ignition switch ON: Battery voltage (Approx. 12V)

Control unit power
supply circuit

Stop lamp signal

Brake pedal is depressed: Battery voltage (Approx. 12V)
Brake pedal is not depressed: Less than approx. 2V

Stop lamp switch
and circuit

ABS motor relay

ABS motor is running
(in CONSULT active test mode): Less than approx. 2V
ABS motor is stopped: Battery voltage (Approx. 12V)

ABS motor, motor
relay and circuit

Actuator relay

Actuator relay
monitor

Actuator relay is activated (with engine running): Less than approx. 2V
ABS actuator relay
Actuator relay is not activated (with fail-safe function activated and engine
and circuit
not running): Battery voltage (Approx. 12V)
Actuator relay is activated (with engine running): Battery voltage (Approx. ABS warning lamp
and circuit, ABS
12V)
Actuator relay is not activated (with fail-safe function activated and engine actuator relay
monitor circuit
not running): Approx. OV

Front right inlet
solenoid

Actuator is activated (in CONSULT active test mode), or actuator relay is
not activated (with fail-safe function activated and engine not running):
Rear inlet solenoid Approx. OV
Actuator is not activated and actuator relay is activated (with vehicle
Front leftinlet
stopped and engine running): Battery voltage (Approx. 12V)
solenoid

ABS solenoid and
circuit

ABS motor monitor

ABS motor is running (in CONSULT active test mode): Battery voltage
(Approx. 12V)
ABS motor is stopped (with ignition switch ON): Approx. OV

ABS motor monitor
circuit

ABS warning lamp

ABS warning lamp ON'2: Approx. OV
ABS warning lamp OFF'2: Battery voltage (Approx. 12V)

ABS warning lamp
and circuit

Wheels are turning (Approx. 30 krn/h)*3: Pulse generates.
Front: Approx. 200 Hz
Rear: Approx. 400 Hz

Wheel sensors
and circuit

Front right wheel
sensor
sensor
Front right outlet
Rear outlet soleI lUlU

Front left Outlet
solenoid

Actuator is activated (in CONSULT active test mode), or actuator relay is
not activated (with fail-safe function activated and engine not running):
Approx. OV
/ Actuator is not activated and actuator relay is activated (with vehicle
stopped and engine running): Battery voltage (Approx. 12V)

ABS solenoid and
circuit

I

1
' :e
to tooen a connector terminal when using a circuit tester for inspection.
'2: ABS warning lamp ON: When the ignition switch is turned ON (before starting the engine) or a malfunction is detected
ABS warning lamp OFF: One second after the ignition switch is turned ON (with the system in normal condition)
*3: Tire pressure must be in accordance with specification.

ST
R8

pL

SD

ANTI-LOCK BRAKE SYSTEM
Control Unit InputfOutput Signal Specifications
(Cont'd)
USING CONSULT
Indicated are the control unit computed data. If the output circuit (harness) should be open or shortcircuited, correct values may be displayed.
Data monitor
Monitor item

Display

Vehicle is stationary.
FR RH SENSOR
Wheel speed
FR LH SENSOR
[kdh]
RR SENSOR

STOP LAMP SW
Brake pedal status
[ON-OFF]

Vehicle is drivem'l

Brake pedal is not
depressed.

[ON-OFF]
Solenoid status

OFF

- -

Stop lamp switch and
circuit

--

ABS solenoid and circuit

-

Actuator (solenoid) is not
activated and actuator
OFF
relay is activated (with
vehicle stopped and
engine running).

FR RH OUT SOL
FR LH OUT SOL
REAR OUT SOL
[ON-OFF]

Actuator relay is activated (with engine running).
ACTUATOR RLY
Actuator relay status
[ON-OFF]

MOTOR RLY

Virtually the same speed Wheel sensor and circuit
as speedometer (within
+
0%)
I

Actuator (solenoid) is
activated (at CONSULT
active test),
or actuator relay is not
activated (with fail-safe
function activated and
engine not running).
-- --

Check item (Reference)

I0 k d h

Brake pedal is
depressed.

--

FR RH IN SOL
FR LH IN SOL
REAR IN SOL

Specifications

Condition

Motor relay and motor
[ON-OFF] status

Actuator relay is not activated (with fail-safe
OFF
function activated and
engine not running).
Motor relay and motor
are activated (at CONSULT active test).
Motor relay and motor
are not activated.
--

ABS warning lamp staWARNING LAMP
[ON-OFF] tus

ON

Waming lamp ON'2
- -

-

Warning lamp OFF'2

ABS actuator relay and
circuit

ABS motor, motor relay,
and circuit
OFF

1 ON
1 OFF

ABS warning lamp and
circuit

--

BAlTERY VOLT

[V]

Power supply voltage
provided for control unit

Ignition switch ON

Control unit power supply circuit

'1: Tire pressure must be in accordance with specification.
"2: ABS warning lamp ON: When the ignition switch is turned ON (before starting the engine) or a malfunction is detected

ABS warning lamp OFF: One second after the ignition switch is turned ON (with the system in normal condition)

ANTI-LOCK BRAKE SYSTEM
Precautions for Trouble Diagnosis
After performing trouble diagnosis, be sure to erase trouble stored in memory. Refer to "CONSULT' (next
page) or "SELF-DIAGNOSIS" (BR-15).
As for the concerns that are difficult to duplicate, move harnesses or harness connectors by hand to check
if there is any poor mating of connector halves or faulty connection.
Do not force to open a connector terminal when using a circuit tester for inspection.
Read GI section thoroughly in advance and make sure of all the general precautions.

Basic Inspection
BASIC INSPECTION 1 - Brake fluid level and leakage
1. Check brake fluid level in reservoir tank. Replenish brake fluid if necessary.
2. Check for leakage at or around brake piping and ABS actuator. If leakage or seepage is noted, proceed
as follows:
If ABS actuator connectors are loose, tighten to specified torque. Recheck to ensure that leakage is no
longer present.
If flare nut threads at piping connectors or actuator threads are damaged, replace faulty parts with new
ones. Recheck to ensure that leakage is no longer present.
If brake fluid leaks through areas other than actuator connectors, wipe off using a clean cloth. Recheck
for leakage or seepage. If necessary, replace faulty parts with new ones.
If brake fluid leaks at or seeps through ABS actuator, wipe off using a clean cloth. Recheck for leakage
or seepage. If necessary, replace ABS actuator with new one.
CAUTION:
ABS actuator cannot be disassembled. Do not attempt to disassemble it.

BASIC INSPECTION 2

- Loose power line terminal

Check battery terminals (positive and negative) and battery mounting (ground) for looseness.

BASIC INSPECTION 3

- ABS warning lamp

1. Turn ignition switch "ON" to ensure that ABS warning lamp lights up for approximately 1 second. If ABS
warning lamp does not light, check ABS warning lamp circuit.
2. After driving vehicle at approx. 30 km/h for approx. 1 minute, check to ensure that ABS warning lamp
remains off. If ABS warning lamp lights, perform self-diagnosis procedures.
3. After performing self-diagnosis procedures, be sure to erase trouble stored in memory.

AT

87
R8

HA

ANTI-LOCK BRAKE SYSTEM
CONSULT
CONTROL UNIT PART NUMBER
The part number that is shown on the control unit label and CONSULT 47850 AAOOO

-

SELF-DIAGNOSIS PROCEDURE
Coliect information on the concern from the customer, and then
perform basic inspections.
Turn ignition switch OFF and connect CONSULT connector to
data link connector for CONSULT on the vehicle.
Start engine and drive vehicle at approx. 30 km/b for approx.
1 minute.
Stop vehicle and touch "START", "ABS" and "SELF-DIAG
RESULTS" sequentially on the CONSULT screen with engine
running.
If "START" is touched immediately after engine is started
or ignition switch is turned on, "ABS" may not be displayed on "SELECT SYSTEM" screen. To display "ABS",
repeat the self-diagnosis procedure from the beginning.
Self-diagnosis results are displayed on the screen. (Touch
"PRINT" to print out the self-diagnosis results, if necessary.)
If "NO FAIL" is displayed, inspect ABS warning lamp. Refer to
the previous page.
Perform appropriate inspection from the self-diagnostic results
mode and repair or replace faulty parts.
Start engine and drive vehicle at approx. 30 km/b for approx.
1 minute.
Recheck to ensure that there is no other malfunction.
Turn ignition switch OFF to prepare for erasing the trouble
stored in memory.
Start engine and touch "START", "ABS", "SELF-DIAG
RESULTS" and "ERASE" sequentially on the CONSULT
screen to erase the trouble stored in memory.
If the trouble stored in memory is not erased, repeat step
6.
10. Drive vehicle at approx. 30 km/h for approx. 1 minute and then
confirm that ABS warning lamp is off.

ANTI-LOCK BRAKE SYSTEM
CONSULT (Cont'd)
SELF-DIAGNOSTIC RESULTS MODE
Diagnostic item

I

Diagnostic item is detected when ...

FR RH SENSOR
[OPEN]

Circuit for front right wheel sensor is open. Or an abnormally high input voltage is
entered due to short to battery.

FR LH SENSOR
[OPEN]

Circuit for front left wheel sensor is open. Or an abnormally high input voltage is entered
due to short to battery.

REAR SENSOR
[OPEN]

Circuit for rear wheel sensor is open. Or an abnormally high input voltage is entered due
to short to battery.

FR RH SENSOR
[SHORTJ'I , '2

Front right wheel sensor is short-circuited or shorted to ground, or gap between the
wheel sensor and the sensor rotor is large. An abnormally low input voltage is entered
and input signal is abnormal.

FR LH SENSOR
[SHORT]

Front left wheel sensor is short-circuited or shorted to ground, or gap between the wheel
sensor and the sensor rotor is large. An abnormally low input voltage is entered and
input signal is abnormal.

REAR SENSOR
[SHORT 11'1, '2

Rear wheel sensor is short-circuited or shorted to ground, or gap between the wheel
sensor and the sensor rotor is large. An abnormally low input voltage is entered and
input signal is abnormal.

FR RH IN ABS SOL
[OPEN]

Circuit for front right inlet solenoid valve is open, or an output voltage is much lower than
the specified value due to short to ground.

FR LH IN ABS SOL
[OPEN]

Circuit for front left inlet solenoid valve is open, or an output voltage is much lower than
the specified value due to short to ground.

REAR IN ABS SOL
[OPEN]

Circuit for rear inlet solenoid valve is open, or an output voltage is much lower than the
specified value due to short to ground.

FR RH IN ABS SOL
[SHORT]

Circuit for front right inlet solenoid valve is shorted, or an output voltage is much higher
than the specified value due to short to battery.

FR LH IN ABS SOL
[SHORT]

Circuit for front left inlet solenoid valve is shorted, or an output voltage is much higher
than the specified value due to short to battery.

REAR IN ABS SOL
[SHORTJ

Circuit for rear inlet solenoid valve is shorted, or an output voltage is much higher than
the specified value due to short to battery.

FR RH OUT ABS SOL
[OPEN]

Circuit for front right outlet solenoid valve is open, or an output voltage is much lower
than the specified value due to short to ground.

FR LH OUT ABS SOL
[OPEN]

Circuit for front left outlet solenoid valve is open, or an output voltage is much lower than
the specified value due to short to ground.

REAR OUT ABS SOL
[SHORT]

Circuit for rear outlet solenoid valve is open, or an output voltage is much lower than the
specified value due to short to ground.

FR RH OUT ABS SOL
[SHORT]

Circuit for front right outlet solenoid valve is shorted, or an output voltage is much higher
than the specified value due to short to battery.

FR LH OUT ABS SOL
[SHORT]

Circuit for front left outlet solenoid valve is shorted, or an output voltage is much higher
than the specified value due to short to battery.

R W R OUT ABS SOL
[SHORT]

Circuit for rear outlet solenoid valve is shorted, or an output voltage is much higher than
the specified value due to short to battery.

ABS MOTOR
[ON FAILURE]

ABS motor turns ON when control unit sends OFF signal. ABS motor circuit is open or
shorted to ground.

ABS MOTOR
[OFF FAILURE]

ABS motor turns OFF when control unit sends ON signal. Relay control wire is broken.

-

--

--

-

-

-

-

ABS ACTUATOR RELAY
[ON FAILURE]
ABS ACTUATOR RELAY
[OFF FAILURE]

--

---

-

I Check item

1

1

Wheel sensor and circuit

ABS solenoid and circuit

--

ABS motor,
motor relay
and circuit

ABS actuator relay tums ON when control unit sends OFF signal. Actuator relay is shortABS actuator
circuited to ground.
relay and
ABS actuator relay tums OFF when control unit sends ON signal. Relay control wire is
circuit
broken.

ANTI-LOCK BRAKE SYSTEM
CONSULT (Cont'd)
-

-

Diagnostic item is detected when...

Diagnostic item

Check item

- -

BAnERY "OLTAGE
[VB-HIGH]

ABS control unit battery voltage is abnormally high.

"OLTAGE

ABS control unit battery voltage is abnormally low.

[VB-LOW]

.

Control unit
power supply
circuit

CONTROL UNIT

Function of calculation in ABS control unit has failed.

ABS MOTOR
[LOCK FAILURE]

ABS motor speed is abnormally low.
1

Control unit,
control unit
power supply
and ground
circuit
AES motor,
motor relay
and circuit
I

'1 : ABS warning lamp turns on if a wheel or wheels spin for I 0 to 80 seconds (depending on the wheel speed) with the vehicle

stuck in snow. ice, or mud. This is a normal condition.

'2: After repairing short-circuited sensor, turning ignition switch ON lights up ABS warning lamp. Check that ABS warning lamp
turns off when the vehicle is driven at approx. 30 krnh for approx. 1 minute as shown in the self-diagnosis procedure.
NOTE:
If "ABSn is not displayed on "SELECT SYSTEM" screen, check ABS control unit and data link connector circuit, and make sure
of the CONSULT card number.

DATA MONITOR PROCEDURE
1.
2.
3.
4.
5.

6.
7.
8.
9.
10.
11.
12.

Refer to CONSULT Instruction Manual for details on data
monitor function.
Turn ignition switch OFF.
Connect CONSULT connector to data link connector for CONSULT.
Turn ignition switch ON.
Touch "START' on CONSULT screen.
Touch "ABS" on CONSULT screen.
If "START" is touched immediately after engine is started
or ignition switch is turned on, "ABS" may not be displayed on "SELECT SYSTEM" screen. To display "ABS",
repeat the data monitor procedure from the beginning.
Touch "DATA MONITORn.
Touch "SETTING" to set recording condition.
Touch "AUTO TRIG", "LONG TIME" and then "ENTER".
Return to "SELECT MONITOR ITEM" screen and touch "CIU
INPUT ITEM", "ALL SIGNALS" or 'SELECTION FROM
MENU". Refer to "DATA MONITOR MODE" on the next page.
Touch "START'.
Display data monitor.
If necessary, sequentially touch "REC START, "REC STOP",
"DATA DISPLAY", "NUMBER PRINT' and "PRINT' to print out
the data.

ANTI-LOCK BRAKE SYSTEM
CONSULT (Cont'd)
DATA MONITOR MODE
MONITOR ITEM

I

CONDITION

SPECIFICATION

FR RH SENSOR
FR LH SENSOR
RR SENSOR

Drive vehicle.
(Each wheel is rotating.)

Displays computed vehicle speed from wheel sensor signal.
Almost the same speed as speedometer.

STOP LAMP SW

Turn ignition switch ON and
depress brake pedal.

Depress the pedal: ON
Release the pedal: OFF

FR RH IN SOL
FR RH OUT SOL
FR LH IN SOL
FR LH OUT SOL
REAR IN SOL
REAR OUT SOL

Ignition switch is turned ON or Operating conditions for each solenoid valve are indicated. ABS is
engine is running.
not operating: OFF

Displays ON/OFF condition of ABS actuator relay.
When turning ignition switch ON, ABS actuator relay is operated.

ACTUATOR RLY

ABS is not operating: OFF
Ignition switch is turned ON or ABS is operating: ON
engine is running.
Warning lamp is turned on: ON
Warning lamp is turned off: OFF

MOTOR RLY
WARNING LAMP

I

BATTERY VOLT

Power supply voltage for control unit
Indicates the voltage measured with a voltage probe.

VOLTAGE

I

PLS WIDTH-H

Refer to CONSULT Instruction
Manual.

ACTIVE TEST PROCEDURE
When conducting Active test, vehicle must be stationary.
Confirm that brakes have been bled completely.
When ABS warning lamp stays on, never conduct Active test.
Turn ignition switch OFF.
Connect CONSULT to Data Link Connector for CONSULT.
Start engine.
Touch "START' on CONSULT screen.

NlSSAN

CONSULT

START

I

-

1

SUB MODE
$

SELECT SYSTEM

BR455C

0-

ENGINE
A/T

I

-

ABS

I

Touch "ABS".

EC ;

AT

'

2

R8 $

~~~~ \

ANTI-LOCK BRAKE SYSTEM
CONSULT (Cont'd)

I b~SELECT

DiAG MODE

r

6.

Touch "ACTIVE TEST'.

7.

Select active test item by touching screen.

8.

Touch "START'.

9.

"ACTIVE TEST" screen is displayed.

01

SELF-DIAG RESULTS
DATA MONITOR

ACTIVE TEST

ECU PART NUMBER

I

FR RH SOL TEST

I

1 !!! SELECT MONITOR ITEM

I

I

I

I SELECTION FROM MENU

I

I

I

I

START

1
ABS solenoid valve
To check that ABS solenoid valves (inlet and outlet) operate in
the following manner, touch "UP*, "KEEP" and "DOWN" on the
screen while observing the monitor.
Operation

I

UP

IN ABS S N

I

OFF

OUTABS S N

I

OFF

I
1
I

KEEP
ON

OFF

(
I
I

DOWN
ON

ON*

*: Solenoid valve stays ON for 1 to 2 seconds after touching the key, and then
turns OFF.

If the active test is conducted with brake pedal depressed, the
brake pedal travel limit may change. This is a normal condition.
"TEST IS STOPPED" message is displayed 10 seconds after
the operation is started.
If the active test needs to be performed again after "TEST IS
STOPPED" is displayed, repeat step 8.

ANTI-LOCK BRAKE SYSTEM
CONSULT (Cont'd)

/ a UCTIl..!E
r

TEST fj

I

I

I ABS motor

I

Touch
"ON"
and
- - - "OFF on the screen to check that ABS motor
relay and ABS actuator relay operate as follows:
-. .

-

-

--

--

--

Operation

ON

OFF

ABS actuator relay

ON

ON

ON

OFF

G9

I

ABS motor relay

1

I

If the active test is conducted with brake pedal depressed, the
brake pedal travel limit may change. This is a normal condition.
"TEST IS STOPPED" message is displayed 10 seconds after
the operation is started.

EG

ANTI-LOCK BRAKE SYSTEM
Self-diagnosis
DESCRIPTION
When a problem occurs in the ABS, the ABS warning lamp on the
instrument panel comes on. To actuate the self-diagnostic results
mode, ground the self-diagnostic check terminal 4 located on the
data link connector for CONSULT. The ABS warning lamp, then,
flashes and indicates the location of the malfunction.

SELF-DIAGNOSIS PROCEDURE
Collect information on the concern from the customer, and then
perform basic inspections.
2. Drive vehicle at approx. 30 km/h for approx. 1 minute.
3. Stop vehicle and start diagnosis.
4. Turn ignition switch "OFF'.
5. Ground the self-diagnostic check terminal 4.
6. Turn ignition switch "ON" to start the self-diagnostic results
mode.
CAUTION:
Keep terminal 4 grounded during self-diagnosis.
Do not depress brake pedal. (Self-diagnosis would not
start.)
Do not start engine. (Self-diagnosis would not start.)
7. After 3 or 4 seconds, ABS warning lamp starts blinking to indicate the malfunction code No.
The indication terminates after 5 minutes. Turning the ignition
switch from "OFF" to "ON" resumes blinking the indication.
8. Verify the location of the malfunction with "MALFUNCTION
CODUSYMPTOM CHART", BR-16. Then make the necessary
repairs.
9. After the malfunctions are repaired, erase the malfunction
codes stored in the control unit. Refer to "HOW TO ERASE
SELF-DIAGNOSTIC RESULTS" on the next page.
10. Rerun the self-diagnostic results mode to verify that the malfunction codes have been erased.
11. Disconnect the check terminal from the ground. The self-diagnostic results mode is now complete.
12. Drive vehicle at approx. 30 km/h for approx. Iminute, and then
check that the ABS warning lamp is off.
1.

HOW TO READ SELF-DIAGNOSTIC RESULTS
(Malfunction codes)
Determine the code No. by observing the time and the frequency that the ABS warning lamp blinks ON and OFF.
When multiple malfunctions occur at a time, up to three code
numbers can be stored; the latest malfunction will be indicated
first.
The indication begins with the start code No. 12. A maximum
of three code numbers appear in the order of the latest one
first. The indication then returns to the start code No. 12 to
repeat.
The start code No. 12 is only indicated repeatedly when there
is no malfunction.

ANTI-LOCK BRAKE SYSTEM
Self-diagnosis (Cont'd)
Example: Code No. 25 Front left wheel sensor (open-ccrcuit)
lnd~cat~on
s:arl

Start code No. i 2

Tens d ~ g ~ t s Un~tsdigits

ABS w a r n q lamp
ON

-

-

I

- .

A9S warnrng lamp
OFF

r---------

06

0.9

I

-

c

-

-

I

- - - - -

.

---------- -I--I--t--l-i-"I

-T---t----t-l-T-l-

3

-

Code No 25

03C303

3.3

0 6 0.6 0.6

09

050303030305030303

Unit: seconds

BRG1185D
Self-d~agnosiscomplete ,
C

!

ABS warning lamp

I

i

I

I
I

................&.j(j(?.:e~o"dd~i!~?!!f!!.
.-----...
.-.---.--.
iiii rase
1
12.5 seconds
I mode
Malfunct~onmemory
erase mode starts.

Malfunction memory

Is

erased

is Nn.

BRG0057C

HOW TO ERASE SELF-DIAGNOSTIC RESULTS
(Malfunction codes)
1. Turn the ignition switch "ON" and start the engine.
2. Drive the vehicle at approx. 30 kmh for approx. 1 minute to
check that there is no other malfunction.
3. Stop the vehicle.
4. Turn the ignition switch "OFF'.
5. Ground the self-diagnostic check terminal.
6. Turn the ignition switch "ON" to start the self-diagnostic results
mode.
CAUTION:
Do not depress the brake pedal during self-diagnosis. Do not
start the engine. (The self-diagnosis would not start.)
7. The ABS warning lamp starts to blink 3 or 4 seconds after the
self-diagnostic results mode is started.
8. Under the self-diagnostic results mode, the malfunction
memory erase mode starts when the check terminal is disconnected from the ground.
9. Ground the check terminal 3 times or more in succession
within 12.5 seconds after the erase mode starts. (Each grounding must be 1 second or longer.)
10. Disconnect the grounding cable from the check terminal to
erase the malfunction memory and complete the self-diagnosis. The ABS warning lamp , then, turns off.
11. Turn the ignition switch "OFF'.

ST

RS'

EL
$jD

ANTI-LOCK BRAKE SYSTEM
Self-diagnosis (Cont'd)
MALFUNCTION CODEISYMPTOM CHART
Malfunction
code No.

1 Different number of teeth of sensor rotors

18

ABS warning
lamp ON

Malfunctioning part

21

Front right wheel sensor (open-circuit)

22

Front right wheel sensor (short-circuit)'4

25

Front left wheel sensor (open-circuit)

26

I Front left wheel sensor (short-circuiQ.4

31

I Rear wheel sensor (open-circuit)

1

Rear wheel sensor (short-circuit)'4

I Front right outlet ABS solenoid valve and circuit

41

-

1

0

0
0
0

0
0
0

---

32

0

Fail-safe
operation

1
1

0
0

1
1

0
0

1

0

1

0

1

0

1

0

-

42

Front right inlet ABS solenoid valve and circuit

45

Front left outlet ABS solenoid valve and circuit

46

Front left inlet ABS solenoid valve and circuit

--

55
56
57

1 Rear outlet ABS solenoid valve and circuit
1 Rear inlet ABS solenoid valve and circuit
1 Power supply (Low or high voltage)*2

61

ABS actuator motor or motor relayg3

63

ABS actuator relay

I At self-diagnoNo indication

1

0

1
1

0
0

1
1

0
0

I

0
0
0

I

-

-

( ABS control unit or data link connector for CONSULT is poorly

sis only

connected.

Ignition switch
ON

ABS control unit1Fuse is blown or ABS warning lamp has an
open circuit.

I

0

0
0
0

1

0

-'I

0
0

I

I

At self-diagnosis only
Stays ON

I ABS control unit1ABS actuator relay is stuck to OFFJABS

I
lgnition switch

I
-

ABS control unit

power supply circuit, ABS actuator relay drive side power supply (coil side) circuit, and ABS warning lamp circuit are shortcircuited./ABS control unit connector is disconnected or poorly

I connected.

I
I

I

--

'1: Fail-safe operation does not activate. A signal from ABS control unit suspends ABS control operation. Brakes operate conventionally. After specified power supply voltage resumes, ABS warning lamp goes out, allowing for ABS control operation.
'2: The code No. does not indicate a malfunction related to the ABS control unit. Do not replace the ABS control unit even if
the code No. appears.
'3: The code No. can sometimes appear when the ABS motor ground circuit is loose or disconnected. When it appears, always
check the ground circuit for improper installation.
'4: ABS warning lamp turns on if a wheel or wheels spin for 10 to 80 seconds (depending on the wheel speed) with the vehicle
stuck in snow, ice, or mud. This is a normal condition. After repairing short-circuited sensor, turning ignition switch ON lights
up ABS warning lamp. Check that ABS warning lamp turns off when the vehicle is driven at approx. 30 krnlh for approx. 1
minute as shown in the self-diagnosis procedure.

TCSIABS SYSTEM
System Description
ABS FUNCTION
During ABS operation, the brake pedal pulsates along with a mechanical noise. This ensures that the ABS
is working properly.
mP
When starting up the engine or immediately after the vehicle starts to run, the brake pedal pulsates and G'
a motor noise from the engine compartment can be heard. They are caused by the ABS operation check
and should not be considered abnormal.
A vehicle with the ABS may stop in a longer distance than a vehicle without the ABS when the brake is EC
applied on a bad road, gravel road, or deep fresh snow.

TCS FUNCTION

a

TCS/ABS control unit monitors the speed of the driving wheels through 4 wheel speed sensors. If driving
wheel slip is detected, fuel to the engine is cut o l and the throttle valve is adjusted so that the engine
torque is reduced. On vehicles with automatic transmission, transmission shift schedule is also changed
to control the rear wheel driving torque, which results in the reduction of wheel slip. This system enables
the throttle valve to be controlled so that optimum engine torque can be achieved in accordance with the
driver's acceleration request.
The driver may not feel satisfied with acceleration on some road surfaces. This poor acceleration occurs
because the operating TCS gives priority to maintaining optimum traction. Therefore, this condition should R8
be considered normal.
When shiftdown is made or the acceleration pedal is depressed while the vehicle is driven on the road
rLrd[-i
- 4
surface that has different friction coefficients, the TCS may operate temporarily.
On vehicles with manual transmission, the SLlP indicator lamp and the TCS OFF indicator lamp may light
up when the engine is about to stall in the conditions shown below. If the lamps go off when engine speed
increases, there is no problem in the system.
At start, the engine almost stalls and the engine speed is much lower than the idle speed.
The vehicle is driven at an extremely low speed with a high-speed gear engaged.
8D
The clutch has been engaged until the vehicle almost stops.

FAIL-SAFE FUNCTION
ABS system
If any malfunction is detected in the system, the ABS warning lamp, the TCS OFF indicator lamp and the SLlP
indicator lamp in the instrument panel is turned on with the TCSIABS deactivated and the vehicle's brake system reverts to normal operation.

TCS system
If any malfunction is detected in the system, both the SLlP indicator lamp and the TCS indicator lamp on the
instrument panel light up and the TCS is shut down. The vehicle operates in the same manner as a vehicle
without the TCS, while the ABS is operational.
If there is a malfunction in the throttle control system, the TCS becomes inoperative while the ABS
remains functional.
When fail-safe operation is activated, perform the self-diagnosis procedure for the TCSIABS first.
Refer to BR-27 for details.

TCSIABS SYSTEM
System Description (Cont'd)
Parts that make throttle control inoperative
Malfunction code No.

Malfunctioning part

11

Throttle position sensor circuit

12

Throttle motor sensor circuit

13

Circuit for the communication line (DKR line)
between TCSIABS control unit and throttle control
unit

L I

91

Actuator system (Motor circuit is open or throttle
motor intermittently works.)

22

Throttle motor drive system (overcurrent)

23

Throttle motor relay circuit (shorted)

24

Throttle motor relay circuit (open)

I

Throttle motor return spring (Return spring is broken.)

32

Parts that make throttle control operative
Malfunction code No.

Malfunctioning parts

31

Starter signal circuit (shorted)

33

Paridneutral position switch circuit (open or
shorted)

System Diagram

--

Secondary throttle posrt~onsensor value

C;

Front nght
wheel sensor

-ul

CI)
C

,

Throttle control unrt

-

$

gc
m

0
CI,

5

Rear ngh:
wheel sensor

0

E

000000
Total control stgnal for engrne, AIT and TCS/ABS
(multrpie communication)

TCSlABS control unrt
Rear lett
whee! sensor

TCS OFF swtch
Front left
wheei sensor

-+ SLIP 1ndrca:or Lamp

'

----c TCS OFF rndcator lamp

c A9S warnlns lamp

BR-0227D

TCSfABS SYSTEM
Component Parts Location

[El TCSIABS control unit

Rear wheel sensor

Throttle motor relay
Front right wheel senso

Throttle control unit

Front left wheel sensor
--

/LA~A~~~~

@ RH side of engine compartment

//

RH side of rear suspension t%ernb&-

I

/

Rear wheel sensor connector

Engine compartment

--

-- -

LH side of engine compartment

Behind LH side lower fi

\

10

SLIP indicator lamp

IOA~

I

ABS warnina lam.
1

L

1

I

,-----------

TCS OFF
indicator

u22

I

I Actuator motor

I

FR OUT

Throlllo
motor sensor

Throttle
motor relay

I

&

Stop lamp SW

--- -7

4

1

ECM TCM

j To data link

Rear IN

6

7

Throttle ClU 20

I

10

I

37 or ECM
TCS switch signal

Throllle molor

I
I

&- -@-J-gT-$@
5 6 7 8

109
Meter CIU (NT model only)
To Meler CIU (Engine speed signal)

---------

2

ECM.TCM or ECM

3

111

3

-

1 4

'\

TO data link
connector for

:

DKV (Throlllo angle output)

-DKR (Ttirotllo niolor (argot
angle signal)

I

I

4
1

115
Dala link connector
for CONSULT

53

7

I

I

---

I

Throlllo motor
angle signal

2

1

TXL
,connector
I for
{Wl CONSULT

2

Throtlle
~ositionsensor

Ttlrottle CIU

1 I

TCSIABS SYSTEM
Control Unit InputlOutput Signal Specifications
USING CIRCUIT TESTER

TCS/ABS control unit

-

-

To perform the following inspection, the ignition switch should be turned ON with TCS/ABS control unit connector and actuator connector properly connected.

I
TCS/ABS contro! unit connector

Terminal No.

P

Specifications'l

Item

Front right wheel
sensor
Rear right wheel

I

I

sensor

I

Rear left wheel
sensor

I
I

Stop lamp signal

Actuator relay

Wheels are turning (Approx. 30 km/h)'3: Pulse generates.
Front: Approx. 200 Hz
Rear: ADDrox.
. , 200 Hz

Wheel sensors
and circuit

Brake pedal is depressed: Battery voltage (Approx. 12V)
Brake pedal is not depressed: Less than approx. 2V

Stop lamp switch
and circuit

Actuator relay is activated (with engine running): Less than approx. 2V
ABS actuator relay
Actuator relay is not activated (with fail-safe function activated and engine
and circuit
not running): Battery voltage (Approx. 12V)

ABS motor is running (in CONSULT active test mode): Battery voltage
ABS motor monitor (Approx. 12V)
ABS motor is stopped (with ignition switch ON): Approx. OV
SLIP indicator
lamp

Check item (Reference)

SLIP indicator lamp ON'S: OV
SLIP indicator lamp OFF'5: Battery voltage (Approx. 12V)

ABS motor monitor
circuit
SLlP indicator
lamp and circuit

TCS OFF indicator TCS OFF indicator lamp ON'4: OV
lamp
TCS OFF indicator lamp OFF'4: Battery voltage (Approx. 12V)

TCS OFF indicator
lamp and circuit

TCS OFF switch
signal

TCS OFF switch is pressed: Approx. OV
TCS OFF switch is not pressed: Approx. 4 - 5V

TCS OFF switch
and circuit

Engine speed signal

Pulse generates.
Refer to EC section ("ECM.TCM Input/Outout Reference Value")

Engine speed signal circuit

Total control signal
(Multiple communication) for engine,
A/T and TCSIABS

Circuit for total
control signal (Multiple communication) for engine,
A/Tand TCSIABS

TCS/ABS SYSTEM
Control Unit InputlOutput Signal Specifications
(Cont'd)
-

Terminal No.

Specifications'l

Approx. 7V
or higher

-

--

Check item (Refer- -ence)

-Communication
line circuit between
TCSIABS control
unit and throttle
control unit

DKV (throttle angle
output)

Acceleration pedal is released: approx. 1 ms (reference)

4B3 warning lamp 0Nr2: Approx. OV
ABS warning lamp
4BS warning lamp 0FF72: Battery voltage (Approx. 12V)

ABS warning lamp
and circuit

Actuator relay
monitor

cictuator relay is activated (with engine running): Battery voltage
(Approx. 12V)
ktuator relay is not activated (with fail-safe function activated and engine
70t running): Approx. OV

ABS warning lamp
and circuit, ABS
actuator relay and
circuit

ABS motor relay

48s motor is running (in CONSULT active test mode): Less than approx.
2V
4BS motor is stopped: Battery voltage (Approx. 12V)

ABS motor, motor
relay and circuit

TCS is not activated:
Approx. 7V

Body
ground DKR (throttle
motor target angle
signal)

OV

--

I

I

Approx. 9 ms (Reference)

Communication
line circuit between
TCSfABS control
unit and throttle
control unit

Front right inlet
solenoid
Front right outlet
solenoid

4ctuator is activated (in CONSULT active test mode), or actuator relay is
Rear inlet solenoid lot activated (with fail-safe function activated and engine not running):
4pprox. OV
Rear outlet sole4ctuator is not activated and actuator relay is activated (with vehicle
stopped
and engine running): Battery voltage (Approx. 12V)
Front left inlet

ABS solenoid and
circuit

solenoid
Front left outlet
solenoid

-

Battery

gnition switch ON: Baitery voltage (Approx. 12V)

Control unit power
supply circuit

'1: Do not force to oDen a connector terminal when usina a circuit tester for ins~ection.

'2: ABS warning lamp ON: When the ignition switch is t6ned ON (before startirig the engine) or a malfunction is detected
ABS warning lamp OFF: When the engine has started (with the system in normal condition)
'3: Tire pressure must be in accordance with specification.
'4: TCS OFF indicator lamp ON: When the ignition switch is turned ON (before starting the engine), a malfunction is detected,
or TCS OFF switch is turned ON
TCS OFF indicator lamp OFF: When the engine has started (with the system in normal condition) and the TCS OFF switch
is off
'5: SLlP indicator lamp ON: When the ignition switch is turned ON (before starting the engine) or a malfunction is detected
SLlP indicator lamp OFF: When the engine has started (with the system in normal condition) and the TCS is inoperative

TCS/ABS SYSTEM
Control Unit InpuVOutput Signal Specifications
(Cont'd)
Throttle control unit

Terminal No.

item
Throttle angle signal

Check item (Reference)

Specifications*
Ignition switch ON
Throttle valve is fully closed: Approx. 0.5V
Throttle valve is fully open: Approx. 4.2V

Throttle position
sensor circuit and
ECM

I

Throttle motor senEngine is idling: Approx. 4.4V
sor

Throttle motor sensor and circuit
I

I Throttle motor

Throttle motor
angle signal

Engine is idling: Approx. 3.4V

TCS switch signal

lgnition switch ON: Approx. 5V
-

angle signal and
circuit

--

-

-

-

Throttle control
unit power supply

lgnition switch ON: Battery voltage (Approx. 12V)

Body
Throttle control
jround
unit power supply

lgnition switch ON: Battery voltage (Approx. 12V)

-

--

EL

Throttle control
unit power circuit

@J

-

1

Throttle control
unit power circuit

lgnition switch ON: Approx. OV

Throttle motor
relay and circuit

Sensor battery
voltage

lgnition switch ON: Approx. 5V

Throttle position
sensor power circuit

Throttle control
unit power supply

lgnition switch ON: Battery voltage (Approx. 12V)

Throttle control
unit power circuit

Throttle motor
relay

lgnition switch ON: Battery voltage (Approx. 12V)

Start signal

lgnition switch START (Disconnect ECM-TCMconnector or ECM connector.): Approx. 10V

a connector terminal when using a circuit tester for inspection.

MA

TCS switch signal
circuit

Throttle motor
relay

*: Do not force to open

R8

I

Throttle motor
relay and circuit

Start signal circuit
and ECM

TCSlABS SYSTEM
Control Unit InputfOutput Signal Specifications
(Cont'd)
USING CONSULT
Indicated are the controi unit computed data. If the output circuit (harness) should be open or shortcircuited, correct values may be displayed.

TCS/ABS control unit
Display

~ o n t t o ltem
r

Data monitor
Condition

Check item (Reference)

Specifications

I Vehicle is stationary.
REVOLUTION SENSOR
W/hI

Wheel speed'l

the same 'peed
as speedometer (within

Vehicle is driven.'l

Wheel sensor circuit

Brake pedal is
STOP LAMP SW
Brake pedal status
[ON-OFF]

ENG RPM SIGNAL
Engine operation
[STOP-RUN]

IN ABS SOLENOID
[ON-OFF]
Solenoid status

ABS ACTUATOR RELAY
Actuator relay status
[ON-OFF]

ABS MOTOR RELAY
Motor relay and motor
[ON-OFF] status

WARNING LAMP
4BS warning lamp sta[ON-OFF] :us'2

THRTL OPENING

[V]

Engine is running at
more than 400 rpm.

1-

Actuator (solenoid) is
activated (at CONSULT
active test), or actuator
relay is not activated
(with fail-safe function
activated and engine not
running).

Engine speed signal circuit

-

Solenoid circuit

Actuator (solenoid) is not
activated and actuator
relay is activated (with
OFF
vehicle stopped and
engine running).

OUT ABS SOLENOID
[ON-OFF]

BATERY BOLT

Brake pedal is not
depressed.
Engine is stopped.

'ewer supply voltage
~rovidedfor control unit

rhrottle angle condition
[%] linked with acceleration
~edal)

Actuator relay is activated (with engine running).

Actuator relay and circuit

Actuator relay is not activated (with fail-safe
OFF
function activated and
engine not running).
Motor relay and motor
are activated (at CONSULT active test).
Motor relay and motor
are not activated.

O F FI

Warning lamp ON

ABS motor, motor relay
and circuit

ABS warning lamp circuit

Warning lamp OFF

Controi unit power supply circuit and ground
circuit

Ignition switch ON

10 - 16V

Acceleration pedal is not
depressed. (Ignition
switch ON)

I

Acceleration pedal is
depressed. (Ignition
switch ON)

I - 10096

Communication line circuit between TCS/ABS
control unit and throttle
control unit

TCS/ABS SYSTEM
Control Unit Input/Output Signal Specifications
(Cont'd)
Display

Data monitor

Monitor item

THRTL OPENING TAR- Motor throttle angle con[%] dition
GET

Check item (Reference)

Specifications

TCS is inoperative.

0%

TCS is operational.

0 - 100%

Communication line circuit between TCSIABS
control unit and throttle
control unit
Communication line circuit between TCS/ABS
control unit and
ECM-TCM or ECM

TCS is inoperative.

Number of cylinders to
which fuel is cut off

TCS MODET3

I

Condition

TCS is operational.
I

GEAR

Gear selection

TCS SW

TCS OFF switch status
(ONIOFF)

TCS switch ON
TCS switch OFF

TCS OFF indicator lamp
status
TCS OFF indicator lamp
SLlP indicator lamp is
ON.

SLIP indicator lamp sta-

SLlP LAMP

SLlP indicator lamp is

( A/T selector position:

PNP switch signal or
neutral position switch
signal status (ONIOFF)

P/N POSITION SIGNAL

I
1

%~hift position:
Neutral
A/T selector position:
Other than N and P
MA' shift position:
Other than Neutral

1

1

ON
OFF

TCS OFF switch circuit

E
3
liFF

ON

SLIP indicator lamp circuit

/ ow
I

I

I

ON

A/T PNP switch or neutral position switch circuit
OFF

I

1

Throttle control unit
Data monitor

Monitor item

I

Condition
I

Sensor voltage (V)

Throttle valve is fully
closed.

TH MOTOR VOLT

Sensor voltage (V)

Engine is idling.

TH OPEN CONT

Motor throttle target
angle signal (ms)

START SIGNAL

ONIOFF

Specifications

I

Check item (Reference)

Approx. 0.5V

Throttle position sensor
circuit

Approx. 3.4V

Throttle motor sensor
circuit

TCS is inoperative

Approx. 9 ms

Communication line circuit between TCS/ABS
control unit and throttle
control unit

Ignition switch ON

ON

Start signal circuit

1

I

NEUT POSl SW

ONIOFF

Shift (selector) lever is in
parkheutral position.

ST

@

'2: ABS warning lamp ON: When the ignition switch is turned ON (before starting the engine) or a malfunction is detected
ABS warning lamp OFF: When the engine has started (with the system in normal condition)
'3: TCS mode: 0 - 24, number of cylinders to which fuel is cut off x 4

THRTL POS SEN

/LT

I.z

indicator amp

'1: Tire pressure must be in accordance with specification.

Display

lzc

1: 1st gear 2: 2nd gear 3: 3rd gear
4: 4th gear 5: 5th gear

TCS OFF indicator lamp
TCS OFF LAMP

@

ParWneutral position
switch circuit

TCSlABS SYSTEM

Precautions for Trouble Diagnosis
After performing trouble diagnosis, be sure to erase trouble stored in memory.
Refer to "CONSULT for TCS/ABS Control Unit Control System" (BR-27), "Self-diagnosis for TCSIABS
Control Unit Control System" (BR-34), "CONSULT for Throttle Control Unit Control System" (BR-37) or
"Self-diagnosis for Throttle Control Unit Control System" (BR-41).
The concerns that are difficult to duplicate may be caused by faulty electrical connections. Move harnesses
or harness connectors by hand to check if there is any poor mating of connector halves or faulty connection.
Do not force to open a connector terminal when using a circuit tester for inspection.
Read GI section thoroughly in advance and make sure of all the general precautions.

Basic Inspection
BASIC INSPECTION 1

- Brake fluid level and leakage

1. Check brake fluid level in reservoir tank. Replenish brake fluid if necessary.
2. Check for leakage at or around brake piping and ABS actuator. If leakage or seepage is noted, proceed
as follows:
If ABS actuator connectors are loose, tighten to specified torque. Recheck to ensure that leakage is no
longer present.
If flare nut threads at piping connectors or actuator threads are damaged, replace faulty parts with new
ones. Recheck to ensure that leakage is no longer present.
If brake fluid leaks through areas other than actuator connectors, wipe off using a clean cloth. Recheck
for leakage or seepage. If necessary, replace faulty parts with new ones.
If brake fluid leaks at or seeps through ABS actuator, wipe off using a clean cloth.
Recheck for leakage or seepage. If necessary, replace ABS actuator with new one.
CAUTION:
ABS actuator cannot be disassembled. Do not attempt to disassemble it.
3. Check brake disc rotors and pads for proper operation.

BASIC INSPECTION 2

- Loose power line terminal

Check battery terminals (positive and negative) and battery mounting (ground) for looseness. If necessary,
tighten to specified torque. Check the battery for lower voltage.

BASIC INSPECTION 3
lamp

- SLlP indicator lamp, TCS OFF indicator lamp and ABS warning

Turn ignition switch "ON" to ensure that TCS OFF indicator lamp lights up. If TCS OFF indicator lamp does
not light, check TCS OFF indicator lamp circuit.
Turn ignition switch "ON" to ensure that SLlP indicator lamp lights up. If SLlP indicator lamp does not light,
check SLlP indicator lamp circuit.
Turn ignition switch "ON" to ensure that ABS warning lamp lights up. If ABS warning lamp does not light,
check ABS warning lamp circuit.
Check that the SLlP indicator lamp and the ABS warning lamp go off approx. 1 second after the engine
has started. If either of the lamps still remains on, perform the self-diagnosis for TCSIABS control unit
control system and the self-diagnosis for throttle control unit control system.
After driving vehicle at approx. 30 km/h for approx. 1 minute, check to ensure that the SLlP indicator lamp
and the ABS warning lamp are off. If either of the lamps still remains on, perform the self-diagnosis for
TCS/ABS control unit control system and the self-diagnosis for throttle control unit control system.
Check that the TCS OFF indicator lamp turns ON and OFF when the TCS OFF switch is turned to ON
and OFF respectively, with the engine running. If the lamp status does not correspond to the switch
position, check the TCS OFF switch circuit.
Check that the TCS OFF indicator lamp goes off when the engine has started with the TCS OFF switch
OFF. If the TCS OFF indicator lamp does not go off even 10 seconds after the engine has started, perform the self-diagnosis for TCSIABS control unit control system and the self-diagnosis for throttle control
unit control system.
After driving vehicle at approx. 30 kmlh for approx. 1 minute with the TCS OFF switch OFF, check to ensure
that the TCS OFF indicator lamp is off. If the TCS OFF indicator lamp lights up, perform the self-diagnosis for TCS/ABS control unit control system and the self-diagnosis for throttle control unit control system.
After performing self-diagnosis procedures, be sure to erase trouble stored in memory.

TCS/ABS SYSTEM

CONSULT for TCS/ABS Control Unit Control
System
CONTROL UNIT PART NUMBER
The part number that is shown on the control unit label and CONSULT
A/T model: 47850 AA310
M/T model: 47850 AA110

SELF-DIAGNOSIS PROCEDURE
Collect information on the concern from the customer, and then
perform basic inspections.
Turn ignition switch OFF and connect CONSULT connector to
data link connector for CONSULT on the vehicle.
Start engine and drive vehicle at approx. 30 km/h for approx.
1 minute.
Stop vehicle with engine running and touch "START", "ABS"
and "SELF-DIAG RESULTS" sequentially on the CONSULT
screen.
If "START" is touched immediately after engine is started
or ignition switch is turned on, "ABS" may not be displayed on "SELECT SYSTEM" screen. To display "ABS",
repeat the self-diagnosis procedure from the beginning.
Self-diagnosis results are displayed on the screen. (Touch
"PRINT' to print out the self-diagnosis results, if necessary.)
If "NO FAIL" is displayed, inspect the SLlP indicator lamp, the
TCS OFF indicator lamp and the ABS warning lamp. Refer to
the previous page.
Perform appropriate inspection from the self-diagnostic results
mode and repair or replace faulty parts.
Start engine and drive vehicle at approx. 30 km/h for approx.
1 minute.
Recheck to ensure that there is no other malfunction.
Turn ignition switch OFF to prepare for erasing the trouble
stored in memory.
Start engine and touch "START", "ABS", "SELF-DIAG
RESULTS" and "ERASE" sequentially on the CONSULT
screen to erase the trouble stored in memory.
If the trouble stored in memory is not erased, repeat step
6.
Drive vehicle at approx. 30 krn/h for approx. 1 minute and then
confirm that the TCS OFF indicator lamp, the SLlP indicator
lamp, and the ABS warning lamp are OFF.
TCS OFF switch is not in cancel condition.

rn
ST
38

y;rjn
E~
8~

TCS/ABS SYSTEM
CONSULT for TCS/ABS Control Unit Control
System (Cont'd)
SELF-DIAGNOSTIC RESULTS MODE
Diagnostic item is detected when...

Diagnostic item

Check item

FR RH SENSOR
[OPEN]

Circuit for front right wheel sensor is open. Or an abnormally high input voltage is
entered due to short to battery.

FR LH SENSOR
[OPEN]

Circuit for front left wheel sensor is open. Or an abnormally high input voltage is entered
due to short to battery.

REAR SENSOR
[OPEN]

Circuit for rear right wheel sensor is open. Or an abnormally high input voltage is enterec
due to short to battery.

RR LH SENSOR
[OPEN]

Circuit for rear left wheel sensor is open. Or an abnormally high input voltage is entered
due to short to battery.

FR RH SENSOR
[SHORT)

Front right wheel sensor is short-circuited or shorted to ground, or gap between the
wheel sensor and the sensor rotor is large. An abnormally low input voltage is entered
and input signal is abnormal.

FR LH SENSOR
[SHORTJ

Front left wheel sensor is short-circuited or shorted to ground, or gap between the wheel
sensor and the sensor rotor is large. An abnormally low input voltage is entered and
input signal is abnormal.

RR RH SENSOR
[SHORTJ

Rear right wheel sensor is short-circuited or shorted to ground, or gap between the
wheel sensor and the sensor rotor is large. An abnormally low input vottage is entered
and input signal is abnormal.

RR LH SENSOR
[SHORV

Rear left wheel sensor is short-circuited or shorted to ground, or gap between the wheel
sensor and the sensor rotor is large. An abnormally low input voltage is entered and
input signal is abnormal.

FR RH IN ABS SOL
[OPEN]

Circuit for front right inlet ABS solenoid valve is open, or an output voltage is much lower
than the specified value due to short to ground.

FR LH IN ABS SOL
[OPEN]

Circuit for front left inlet ABS solenoid valve is open, or an output voltage is much lower
than the specified value due to short to ground.

REAR IN ABS SOL
[OPEN]

Circuit for rear inlet ABS solenoid valve is open, or an output voltage is much lower than
the specified value due to short to ground.

FR RH IN ABS SOL
[SHORT]

Circuit for front right inlet ABS solenoid valve is shorted, or an output voltage is much
higher than the specified value due to short to battery.

FR LH IN ABS SOL
[SHORTJ

Circuit for front left inlet ABS solenoid valve is shorted, or an output voltage is much
higher than the specified value due to short to battery.

REAR IN ABS SOL
[SHORT]

Circuit for rear inlet ABS solenoid valve is shorted, or an output voltage is much higher
than the specified value due to short to battery.

FR RH OUT ABS SOL
[OPEN]

Circuit for front right outlet ABS solenoid valve is open, or an output voltage is much
lower than the specified value due to short to ground.

FR LH OUT ABS SOL
[OPEN]

Circuit for front left outlet ABS solenoid valve is open, or an output voltage is much lower
than the specified value due to short to ground.

REAR OUT ABS SOL
[OPEN]

Circuit for rear outlet ABS solenoid valve is open, or an output voltage is much lower
than the specified value due to short to ground.

FR RH OUT ABS SOL
[SHORT]

Circuit for front right outlet ABS solenoid valve is shorted, or an output voltage is much
higher than the specified value due to short to battery.

FR LH OUT ABS SOL
[SHORT]

Circuit for front left outlet ABS solenoid valve is shorted, or an output voltage is much
higher than the specified value due to short to battery.

REAR OUT ABS SOL
[SHORT]

Circuit for rear outlet ABS solenoid valve is shorted, or an output voltage is much higher
than the specified value due to short to battery.

ABS MOTOR
[ON FAILURE]

ABS motor turns ON when control unit sends OFF signal. ABS motor circuit is open or
shorted to ground.

ABS MOTOR
[OFF FAILURE]

ABS motor turns OFF when control unit sends ON signzl. Relay control wire is broken.

-

-

-

-

-

--

-

--

Wheel sensor circuit

-

Solenoid and
circuit

--

ABS motor,
motor relay
and circuit

TCS/ABS SYSTEM
CONSULT for TCSlABS Control Unit Control
System (Cont'd)
Diagnostic item
ABS ACTUATOR RELAY
FAILURE]

b~

ABS ACTUATOR RELAY
[OFF FAILURE]

Diagnostic item is detected when ...

Check item

ABS actuator relay turns ON when control unit sends OFF signal. Actuator relay is shortABS actuator
circuited to ground.
relay and
ABS actuator relay turns OFF when control unit sends ON signal. Relay control wire is
circuit
broken.

BAlTERY VOLTAGE
[VB-IiIGH]

TCSIABS control unit battery voltage is abnormally high.

BAlTERY VOLTAGE
[VB-LOW

TCSIABS control unit battery voltage is abnormally low.

TCSIABS
control unit
power supply
and ground
circuit

--

CONTROL UNIT

Function of calculation in TCS/ABS control unit has failed.

TCSIABS
control unit

ABS MOTOR
[LOCK FAILURE]

ABS motor speed is abnormally low.

ABS motor,
motor relay
and circuit
Engine
speed signal
circuit

ENGINE SPEED SIG

Engine speed signal is interrupted or signal wire is suspected to be broken.
TCSIABS control unit connector or ECM-TCM or ECM connector is poorly connected.

THROTLE POSl SIG

Circuit for
the commuThe communication line between TCSIABS control unit and throttle control unit is open
nication line
or shorted.
between
Throttle control system (throttle control unit, peripheral harness, and throttle actuator)
TCSIABS
is abnormal.
control unit
TCSIABS control unit or throttle control unit battery voltage is low.
and throttle
control unit

ENGINE SYSTEM

Engine main components (crankshaft position sensor, mass air flow sensor, engine coolant temperature sensor, ignition primary signal, throttle position sensor, and motor throttle
position sensor) are abnormal.

Engine system

LAN SIGNAL 1

Total control
signal 1
Total control signal (multiple signal) for engine, AIT and TCS/ABS is abnormal (open or
(multiple sigshorted communication harness, faulty connections, abnormal TCS/ABS control unit or
nal) for
ECM-TCM or ECM).
engine, A / l
TCSIABS control unit power is momentarily cut off or decreased.
and TCSI
ABS

LAN SIGNAL 2

Total control signal (multiple signal) for engine,
and TCS/ABS is abnormal (open or
Total control
shorted communication harness, faulty connections, abnormal TCS/ABS control unit or
signal 2
ECM.TCM or ECM).
(multiple sigECM.TCM or ECM starter switch is stuck to ON.
nal) for
The starter switch is ON for 10 seconds or longer even after the engine has started.
engine, P A
(This is not a malfunction.)
and TCSI
ECM-TCM or ECM is abnormal. (Total control signal (multiple signal) for engine, A/T
ABS
and TCSIABS is malfunctioning. Or the system is in the process of CPU back up.)

LAN SIGNAL 3

TCSIABS is abnormal.

TCSfABS SYSTEM
CONSULT for TCSfABS Control Unit Control
System (Cont'd)
Diagnostic item is detected when ...

Diagnostic item

LAN CIRCUIT 1

LAN CIRCUIT 2

I Check item

Total control signal (multiple signal) for engine, A l l and TCSIABS is abnormal (open or
shorted communication harness,-faulty connections, abnormal TCSIABS control unit or
signal 1, 2
ECM.TCM or ECM).
(multiple
sigECM.TCM or ECM power is cut off or decreased for 2 seconds or longer.
nal) for
Total control signal (multiple signal) for engine, ArT and TCSIABS is suspected to be
interrupted (open or shorted communication harness, faulty connections, abnormal
and TCSI
TCS/ABS control unit or ECM TCM or ECM).
ABS
ECM.TCM or ECM power is cut off or decreased for 2 seconds or longer.

NOTE:
If "NO FAILn is displayed as a result of the CONSULT self-diagnosis when the ABS warning lamp is lit, inspect the engine speed
signal circuit.
If "ABSn is not displayed on "SELECT SYSTEM" screen, check ABS control unit and data link connector circuit, and make sure of
the CONSULT card number.
If "ENGINE SYSTEM", "LAN SIGNAL 1". "LAN SIGNAL 2", "LAN SIGNAL 3 , "LAN CIRCUIT 1" or "LAN CIRCUIT 2" is displayed
on the screen, perform the self-diagnosis for the ECM.TCM or ECM.
If "THROlTLE CONTROLLER COMMUNICATIONn is displayed on the screen, perform the self-diagnosis for throttle control unit.

DATA MONITOR PROCEDURE
a

1.
2.

3.
4.
5.
a

10.
11.
12.

Refer to CONSULT Instruction Manual for details on data
monitor function.
Turn ignition switch OFF.
Connect CONSULT connector to data link connector for CONSULT.
Turn ignition switch ON.
Touch "START" on CONSULT screen.
Touch "ABS" on CONSULT screen.
If "START" is touched immediately after engine is started
or ignition switch is turned ON, "ABS" may not be displayed on "SELECT SYSTEM" screen. To display "ABS",
repeat the data monitor procedure from the beginning.
Touch "DATA MONITOR".
Touch "SETTING" to set recording condition.
Touch "AUTO TRIG", "LONG TIME" and then "ENTER".
Return to "SELECT MONITOR ITEM" screen and touch "C/U
INPUT ITEM", "ALL SIGNALS" or "SELECTION FROM
MENU". Refer to "DATA MONITOR MODE" on the next page.
Touch "START".
Display data monitor.
If necessary, sequentially touch "REC START, "REC STOP",
"DATA DISPLAY", "NUMBER PRINT" and "PRINT" to print out
the data.

TCS/ABS SYSTEM
CONSULT for TCSfABS Control Unit Control
System (Cont'd)
DATA MONITOR MODE
--

I

I

~elect-monitoritem

Display

Remarks

Selection from
menu

signals
FR RH SEN

[kmlh]

Displays vehicle speed computed based on
front right wheel sensor signal.

FR LH SEN

[kmlh]

Displays vehicle speed computed based on
front left wheel sensor signal.

REAR SEN

[kmlhll

Displays vehicle speed computed based on
rear right wheel sensor signal.

RR LH SEN

lkmlhll

Displays vehicle speed computed based on
rear left wheel sensor signal.

FIR IN SOL

[ON-OFF]

FIR OUT SOL

[ON-OFF]

I
/

FIL IN SOL
FIL OUT SOL
REAR IN SOL

[ON-OFF]
[ON-OFq

RR OUT SOL

[ON-OFF]

ABS ACTUATOR

[ON-OFF]

ABS MOTOR

[ON-OFFI

STOP LAMP SW

[ON-OFFl

ENG SPEED SIG
WARNING LAMP

[RUNISTOP]
[ON-OFF]

/
/
/
I
I
I

I

THRTL OPENING

I
1x11

THL OP TARGET

[%I

BATTERY VOLT

lndicates operating condition (ONIOFF) for
front right outlet solenoid.

Rs

O

lndicates operating condition (ONIOFF) for
front left inlet solenoid.

y-13

A

Indicates operating condition (ONIOFF) for
front left outlet solenoid.

"

I

0
0
-

0
0
0
0

I
I

I

1

0

0

[ON-OFF]*

TCS OFF LAMP

[ON-OFF]

SLIP LAMP

[ON-OFF]

*:

-

-

I
1

lndicates operating condition (ONIOFF) for
rear outlet solenoid.

O

lndicates ABS actuator relay status (ON1
OFF).

0
0
0
0

0
0

.-

O

n

0
-

--

I Indicates operating condition (ONIOFF) for
I rear inlet solenoid.

V

1
-

PIN POSl SIG

1

A

SC

Indicates ABS motor relay status (ONIOFF).
Indicates stop lamp switch status (ONIOFF).

I lndicates engine operation.

I lndicates ABS warning lamp status.

I lidicates the voltage supplied to the TCSI
ABS control unit.

0

Indicates throttle angle condition.

0-1-

lndcates throttle control unit target angle.

TCS MODE

TCS SW

87

-

-

-

- -

-

--

-

-

lndicates the value at which fuel to ECM is
cut off.

GEAR

-

I

AT

u -:-.!

iv

I

lndicates operating condition (ONIOFF) for
front right inlet solenoid.

O

zc

6

-

lndicates the gear position.

-

0
0
0

lndicates TCS switch status (ONIOFF).

0
0

I lndicates TCS OFF indicator lamp status.
I lndicates SLlP indicator lamp status.
lndicates the selector position (ONIOFF)
based on the A/T PNP switch signal or the
neutral position switch signal.

[ON-OFFI I
I
The TCS switch only indicates that the switch is ON or OFF. It does not necessarily correspond to the TCS operation condition (TCS OFF indicator lamp OFF or ON).

TCS/ABS SYSTEM
CONSULT for TCS/ABS Control Unit Control
System (Cont'd)
ACTIVE TEST PROCEDURE
When conducting Active test, vehicle must be stationary.
Confirm that brakes have been bled completely.
When ABS warning lamp stays on, never conduct Active test.
Turn ignition switch OFF.
Connect CONSULT to Data Link Connector for CONSULT.
Start engine.
Touch "START' on CONSULT screen.

CONSULT

START

I

SUB MODE

I
I

I
I

BR455D

Touch "ABS".

SELECT SYSTEM

ENGINE
Arr

1

ABS

I

I
Touch "ACTIVE TEST'.

[ $ SELECT DlAG MODE

0
1

SELF-DIAG RESULTS
DATA MONITOR
ACTIVE TEST
ECU PART NUMBER

Select active test item by touching screen.

FR RH SOL TEST

$

I

SELECT MONITOR ITEM

SELECTION FROM MENU

u
START

Touch "START'.

TCS/ABS SYSTEM
CONSULT for TCS/ABS Control Unit Control
System (Cont'd)
9.

"ACTIVE TEST' screen is displayed.

ABS solenoid valve
a

To check that ABS solenoid valves (inlet and outlet) ooerate in
the following manner, touch "UP", "KEEP" and "DOWN" on the @
screen while observing the monitor.
Operation

UP

KEEP

DOWN

IN ABS S N

OFF

ON

ON

OUTABS S N

OFF

I

I

OFF

I

ON'

': Solenoid valve stays ON for 1 to 2 seconds after touching the key, and then
turns OFF.

a

If the active test is conducted with brake pedal depressed, the
brake pedal travel limit may change. This is a normal condition.
"TEST IS STOPPED" message is displayed 10 seconds after
the operation is started.
If the active test needs to be performed again after "TEST IS
STOPPED" is displayed, repeat step 8.

Ee

A'
-

--

=<
Y
;

ST
RS

ABS motor
Touch "ON" and "OFF' on the screen to check that ABS motor
relay and ABS actuator relay operate as follows:

a
a

Operation

ON

OFF

ABS actuator relay

ON

ON

ABS motor relay

ON

OFF

If the active test is conducted with brake pedal depressed, the
brake pedal travel limit may change. This is a normal condition.
"TEST IS STOPPED" message is displayed 10 seconds after
the operation is started.

EL
@

TCS/ABS SYSTEM
Self-diagnostic check ter
(Terminal 4 of data link c

Self-diagnosis for TCSfABS Control Unit
Control System
SELF-DIAGNOSIS PROCEDURE
Collect information on the concern from the customer, and then
perform basic inspections.
2. Drive vehicle at approx. 30 km/h for approx. 1 minute.
3. Stop vehicle and start diagnosis.
4. Turn ignition switch "OFF.
5. Ground the self-diagnostic check terminal 4 on the data link
connector for CONSULT.
6. Turn ignition switch "ON" to start the self-diagnostic results
mode.
CAUTION:
Keep terminal 4 grounded during self-diagnosis. Do not
depress brake pedal. Do not start engine. (Self-diagnosis
would not start.)
When SLlP indicator lamp does not start blinking, check
TCSfABS control unit power supply circuit and ground
circuit.
7. The SLlP indicator lamp starts blinking to indicate the malfunction code No. 3 or 4 seconds after the self-diagnostic results
mode is started.
The indication terminates after 5 minutes. Turning the ignition switch from "OFF" to "ON" resumes blinking the indication.
During the SLIP indicator lamp operation shown above,
TCS OFF indicator lamp and ABS warning lamp are lit.
8. Vsrify the location of the malfunction with "MALFUNCTION
CODUSYMPTOM CHART", BR-36. Then make the necessary
repairs.
9. After the malfunctions are repaired, erase the malfunction
codes stored in the control unit. Refer to "HOW TO ERASE
SELF-DIAGNOSTIC RESULTS on the next page.
10. Rerun the self-diagnostic results mode to verify that the malfunction codes have been erased.
When the malfunction codes have been erased, the start
code is only indicated.
11. Disconnect the check terminal from the ground. The self-diagnostic results mode is now complete.
12. Drive vehicle at approx. 30 km/h for approx. 1 minute, and then
check that the TCS OFF indicator lamp, the SLlP indicator
lamp and the ABS warning lamp are OFF.
1.

Data link connector
for CONSULT

HOW TO READ SELF-DIAGNOSTIC RESULTS
(Malfunction codes)
Determine the code No. by observing the time and the frequency that the SLlP indicator lamp flashes ON and OFF.
Refer to the next page.
When multiple malfunctions occur at a time, up to three code
numbers can be stored; the latest malfunction will be indicated
first.
The indication begins with the start code No. 12. After that a
maximum of three code numbers appear in the order of the
latest one first. The indication then returns to the start code No.
12 to repeat.
The start code No. 12 is only indicated repeatedly when there
is no malfunction.

TCS/ABS SYSTEM
Self-diagnosis for TCS/ABS Control Unit
control System (Cont'd)
Example: Code No. 25 Front left wheel sensor (open-circutt)
lnd~cat~on
start

ABS warnlng lamp
ON

Start code No. 12
Tens drglts

-

Units drgits

Code No. 25

I

ABS warning lamp
OFF

--------------

I----------

3

06

0.9

.

03C303

33

0 6 3.6 0 6

09

- - - - - l

- - - - -?-I

030303030303030303

Unit: seconds

BRG1185D

HOW TO ERASE SELF-DIAGNOSTIC RESULTS
(Malfunction codes)
1. Turn the ianition switch "ON" and start the engine.
2. Drive the iehicle at approx. 30 km/h for appfox. 1 minute to
check that there is no other malfunction.
3. Stop the vehicle and turn the ignition switch "OFF'.
I88
4. Ground the self-diagnostic check terminal 4 on the data link
connector for CONSULT.
5. Turn the ignition switch "ONnto start the self-diagnostic results /,%@A
mode.
self-d~agnostscomplete
CAUTION:
i
SLlP ndicator lamp
Keep terminal 4 grounded during self-diagnosis. Do not EL
I
ON
r
depress the brake pedal during self-diagnosis. Do not start the
engine.
OFF - c
SD
6. The SLIP indicator lamp starts blinking to indicate the malfunction code No. 3 or 4 seconds after the self-diagnostic results
mode is started.
ground
The indication terminates after 5 minutes. Turning the igni-- --- - - - -- - - - - ---f2.i geconds--- - - - - -..tJErase
mode
tion switch from "OFF" to "ON" resumes blinking the indiMalfunct~onmemory
Malfunct~onmemory IS
cation. During the SLlP indicator lamp operation shown
erase mode starts.
1s erased.
above, TCS OFF indicator lamp and ABS warning lamp are
BRZOO~~D
lit.
7. Under the self-diagnostic results mode, the malfunction
memory erase mode starts when the check terminal is disconnected from the ground.
8. Ground the check terminal 3 times or more in succession
within 12.5 seconds after the erase mode starts. (Each grounding must be 2 seconds or longer.)
9. Disconnect the grounding cable from the check terminal to
erase the malfunction memory and complete the self-diagnosis.
10. Rerun the self-diagnostic results mode to verify that the malfunction codes have been erased.
0
When the malfunction codes have been erased, the start
code No. 12 is only indicated.
11. Disconnect the check terminal from the ground. The self-diagnostic results mode is now complete.
12. Drive vehicle at approx. 30 k d h for approx. 1 minute, and then
check that the TCS OFF indicator lamp, the SLlP indicator
lamp and the ABS warning lamp are OFF.
13. Turn the ignition switch "OFF.

f

4

-i

i

TCS/ABS SYSTEM
Self-diagnosis for TCSfABS Control Unit
Control System (Cont'd)
MALFUNCTION CODE/SYMPTOM CHART
I

I

Malfunction code
No.

Check item

12

Normal

21

Front right wheel sensor (open-circuit)
Front right wheel sensor (short-circuit)

I

Detection time
Engine
In driving
running

-

-

0

35

Rear left wheel sensor (open-circuit)

36

Rear left wheel sensor (short-circuit)

-

41

Front right outlet solenoid valve and circuit

42

Front right inlet solenoid valve and circuit

0
0
0
0
0
0
0

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

0

0

0
0
0
0

0
0
0
0

22
26

Front left wheel sensor (open-circuit)
Front left wheel sensor (short-circuit)

31

Rear right wheel sensor (open-circuit)

32

Rear right wheel sensor (short-circuit)

25

45

Front left outlet solenoid valve and circuit

46

Front left inlet solenoid valve and circuit

55

Rear outlet solenoid valve and circuit

56

Rear right inlet solenoid valve and circuit

57

Battery voltage (low)

58

Throttle control unit system or circuit for the cornmunication line between TCSIABS control unit and
throttle control unit

61

Actuator motor and motor relay circuit

63

Actuator relay circuit
TCSIABS control unit

71
75

80

83
84
85

86
NOindi-

Total control signal (multiple signal) for engine, IVT
and TCS/ABS
Engine speed signal
Monitoring of total control signal (multiple signal) for
engine, AfT and TCS/ABS
Engine system component fuel condition
Incomplete start process of total control signal (multiple signal) for engine, AfT and TCSIABS
Continuous start process of total control signal
(multiple signal) for engine,
and TCS/ABS
Remains OFF: Data link connector circuit

cation Remains ON: SLIP indicator lamp circuit shorted,
(no blink- TCSIABS control unit or self-diagnostic check terminal circuit open
ing)

0
-

0

-

0

-

Lamp ON
ABS

TCS OFF

SLlP

Fail-safe
operation

0
0

-

-

-

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

0
0
0
0
0
0
0
0
0
0
0
0
0
0

0

0

0

0

-

0
0
0
0
0
0
0
0

0
0
0
0
0

0
0
0
0
0
0
0
0
0

a

0
0
0
0
0
0
0
0
0
0
0
0
0
-*2

0
0
0 5

-

-

0
0'5

-'I

-

0'3

0
0
0

0
0
0

0
0

0
0

-

0

0

-

-

-

-'4

0

0

0

0

0

-'4

-

NOTE:
When the malfunction code No. 58 is indicated, perform the throttle control unit self-diagnosis. When the malfunction code Nos.
75, 80, 83, 84, 85 or 86 is indicated, perform the self-diaqnosis for ECM-TCM or ECM.
'I: Fail-safe operation is not activated. A signal from control unit suspends TCS and ABS control operation. Brakes operate
conventionally and the vehicle operates in the same manner as a vehicle without the TCS. After specified battery voltage
resumes, the TCS OFF indicator lamp and the ABS warning lamp go off, allowing for TCS and ABS control operation.
'2: TCS operation only stops and fail-safe operation is activated, allowing for ABS control operation.
'3: Malfunction is detected only when TCS is in operation.
'4: When there are malfunctions in the self-diagnostic check terminal circuit (terminal 4 of the data link connector for CONSULT)
and SLlP indicator lamp circuit, fail-safe operation is not activated.
'5: Some malfunctions in the TCS/ABS control unit cause the SLlP indicator lamp and the ABS warning lamp to go off separately.

TCS/ABS SYSTEM

CONSULT for Throttle Control Unit Control
System
CONTROL UNIT PART NUMBER
The part number that is shown on the control unit label and CONSULT 23790 AA500

SELF-DIAGNOSIS PROCEDURE
Collect information on the concern from the customer, and then
perform basic inspections.
Turn ignition switch OFF and connect CONSULT connector to
data link connector for CONSULT on the vehicle.
Start engine and drive vehicle at approx. 30 kmlh for approx.
1 minute.
Stop vehicle with engine running and touch "START',
"THROTTLE CONTROL" and "SELF-DIAG RESULTS"
sequentially on the CONSULT screen.
If "START" is touched immediately after engine is started
or ignition switch is turned on, "THRORLE CONTROL"
may not be displayed on "SELECT SYSTEM" screen. To
display "THROTTLE CONTROL", repeat the self-diagnosis
procedure from the beginning.
Self-diagnosis results are displayed on the screen. (Touch
"PRINT" to print out the self-diagnosis results, if necessary.)
If "NO FAIL" is displayed, inspect SLIP indicator lamp, TCS
OFF indicator lamp, and ABS warning lamp. Refer to BR-26.
Perform appropriate inspection from the self-diagnostic results
mode and repair or replace faulty parts.
Start engine and drive vehicle at approx. 30 krn/h for approx.
1 minute to ensure that there is no other malfunction in the
system.
Turn ignition switch OFF to prepare for erasing the trouble
stored in memory.
Start engine and touch "START', "THROTTLE CONTROL",
"SELF-DIAG RESULTS" and "ERASE sequentially on the
CONSULT screen to erase the trouble stored in memory.
If the malfunction stored in memory is not erased, repeat
step 6.
10. Drive vehicle at approx. 30 km/h for approx. 1 minute and then
confirm that TCS OFF indicator lamp and SLIP indicator lamp
is OFF.

sir
Rs
!iIA

a
8~

!

TCSIABS SYSTEM
CONSULT for Throttle Control Unit Control
System (Cont'd)
SELF-DIAGNOSTIC RESULTS MODE
-

- Diagnostic item

I

Diagnostic item is detected when...
Throttle position sensor signal output is abnormally high or
continues to stay low for a certain period of time.

THROTTLE POSl SEN

I

Throttle motor sensor signal output is abnormally high or continues to stay low for a certain period of time.

THROTTLE MOTOR

THRTL OPEN TRGET

Circuit for throttle motor target angle signal (DKR line) is open
or shorted.
TCS/ABS control unit is abnormal.

THROTTLE ACTUATOR

Throttle motor operation does not accord with the throttle
motor target angle.

I

Check item
Throttle position sensor circuit

1

Throttle motor sensor and circuit
Circuit for the communication
line between the throttle control
unit and the TCSIABS control
unit

I

THROTTLE MOTOR

1

Overcurrent is applied to the throttle motor drive circuit.

Throttle motor and circuit

1

RLY
[SHORT]

Throttle motor relay and circuit

THROlTLE MOTOR RLY
[OPEN]
ENGINE START SIG
NEUTRAL POSl SW

Throttle motor relay is short-circuited.
Throttle motor relay is open.

I

Start signal is not correctiy entered due to short.
Parkheutral position switch signal is not correctly entered due
to open or shorted circuit.

I

Start signal circuit and
ECM-TCM or ECM
-

-

Neutral position switch circuit
and PNP switch circuit

DATA MONITOR PROCEDURE

connector for

Refer to CONSULT Instruction Manual for details on data
monitor function.
Turn ignition switch OFF.
Connect CONSULT connector to data link connector for CONSULT.
Turn ignition switch ON.
Touch "START' on CONSULT screen.
Touch ''THROTTLE CONTROL" on CONSULT screen.
Touch "DATA MONITOR".
Touch "SETTING" to set recording condition.
Touch one key from "AUTO TRIG", "MANUAL TRIG" and
"SPECIAL", and then touch "LONG TIME".
With "AUTO TRIG" selected, the data is automatically recorded
if a malfunction occurs during the data monitor. With "SPECIAL" selected, the data is automatically recorded when TCS
is activated.
Touch "ENTER".
Return to "SELECT MONITOR ITEM" screen and touch "ALL
SIGNALS".
Display data monitor.
If necessary, sequentially touch "REC START', "REC STOP",
"DATA DISPLAY", "NUMBER PRINT' and "PRINT' to print out
the data.

Bb38

TCS/ABS SYSTEM
CONSULT for Throttle Control Unit Control
System (Cont'd)
DATA MONITOR MODE

I

Il

Display

--

All signals

I

I

I

[ ~ l

o

THRTL OPENING

lo]

0

I

THRTL POS SE2

MI

0

1 ;

THRL2 OPENING

1
/

rOl

0

BATTERY VOLT

MI

0

ims]/

0

Remarks

Selection
from menu

THRTL POS SEN

TH OPEN SIG

-

Select monitor item

n

Dispiays throttle position sensor signal voltage.
Displays throttle angle computed based on throttle position
sensor signal voltage.
Displays throttle motor sensor signal voltage.
Displays throttle motor angle computed based on throttle
motor sensor signal voltage.

I

I

A

Displays the battery voltage for the control unit.

A

Displays the pulse width of the throttle motor target angle
signal from the TCSIABS control unit.

CLOSED THUSW

[ONIOFF]

0

A

lndicates the switch status (ONIOFF) based on the throttle
position sensor signal.

NEUT POSl SW

[ONIOFF]

0

A

lndicates the switch status (ONIOFF) based on the parW
neutral position switch signal.

START SIGNAL

[ONIOFF]

0

A

lndicates the status (ONIOFF) based on the starter signal.

0
0

A

Displays the throttle motor control target computed by the
control unit based on each input signal.

A

lndicates the throttle motor drive duty.

TH OPEN CONT
TH MOTOR DUTY

TCS SIGNAL

["I
I"/.]
[ONIOFF]

I

/

I

lndicates the throttle motor relay status (ON/OFF).

O

I

a

lndicates "VALID" when throttle motor target angle signal is
received from the TCS/ABS control unit and the throttle
control unit closes the throttle motor.

TCS FLAG

COMM COND

TH CLSD LRN
VOLTAGE

PULSE

lndicates ON when the throttle motor angle reaches a
specified iower limit.

[ONIOFFJ

PoNwEqI

0

0

PI I
[ms, Hz, %I

/
I

-

I

A

lndicates the condition of the communication between TCS/
ABS control unit and throttle control unit. Normally ON is
indicated, and OFF is shown when there is failure.

A

lndicates if the throttle motor has been fully closed before.
"DONE" is indicated when it has, and "YET" is shown when
it has not yet.

A

lndicates the voltage measured with a voltage probe.

h

lndicates the pulse measured with a pulse probe.
If it cannot be measured, "%" is shown on the display. The
%" mark is also shown to the left of the final data until the
measuring result is output.

ACTIVE TEST PROCEDURE
1. Turn ignition switch OFF.
2. Connect CONSULT connector to data link connector for CONSULT.
3. Turn ignition switch ON.
4. Touch "START" on CONSULT screen.
5. Touch "THROTTLE CONTROL" on CONSULT screen.

EG

AT

TCSIABS SYSTEM
CONSULT for Throttle Control Unit Control
System (Cont'd)
bJ

SELECT DIAG MODE

Touch "ACTIVE TEST".

SELF-DIAG RESULTS
&

I

1

DATA MONITOR
ACTIVE TEST

I

I

ECU PART NUMBER

I P?j
I THROTIIEZ OPENING

Touch "MOTOR THROSTLE OPEN" on the "SELECT TEST
ITEMnscreen.

SELECTTEST ITEM

I
1

a

THROTTLE MOTOR
I
THROTLE MOTOR RLY1

Touch "START' with "MAIN SIGNALS" reversed.

Set the motor throttle target angle to 0° (fully closed).
The motor throttle target angle shown on the screen is 2".

w ACTIVE TEST
THRTL2 OPENlNG

0.00"

---------- MONITOR ==========
---------THRL2 OPENING
THMOTORDUTY

0.00"
20.0°/0

After the steps above, confirm that the engine speed is limited
when the acceleration pedal is depressed.
As shown above, change the motor throttle angle several times
while observing the limitation of the engine speed in accordance with the throttle angle.

TCSfABS SYSTEM

Self-diagnosis for Throttle Control Unit Control
System
SELF-DIAGNOSIS PROCEDURE
1. Turn ignition switch ON or start the engine to start self-diagnosis.
2. The control unit LED comes on to indicate the malfunction code No.
3. Verify the location of the malfunction with "MALFUNCTION CODEISYMPTOM CHART", BR-42. Then
make the necessary repairs.
4. After the malfunctions are repaired, erase the malfunction codes stored in the control unit. Refer to "HOW
TO ERASE SELF-DIAGNOSTIC RESULTS" shown below.
5. Turn ignition switch OFF and then turn ignition switch ON or start the engine to verify that the malfunction
codes have been erased.
6. Verify that SLIP indicator lamp and TCS indicator lamp are OFF.

HOW TO READ SELF-DIAGNOSTIC RESULTS (Malfunction codes)
Determine the code No. by observing the time and the frequency that the throttle control unit LED blinks
ON and OFF. When multiple malfunctions occur at a time, all the code numbers can be stored. The indication begins with the start code No. 12, followed by the stored malfunction codes. The smallest number
of the stored codes appears first and the others follow sequentially. The indication then returns to the start
code No. 12 to repeat.
The malfunction code No. 55 is only indicated repeatedly when there is no malfunction.

--

Example: Code No. 12 and No. 33

0.6

-

(tens digit) '

ON

0.3

'c

(units digit)

-

0.6

OFF

\5

L

- - .

I

=i

1-1r-t

0.9

--

0.3
1
-

3.3

0.3

P

d

i

I

W

b

r

0.9-1

0.6
L

3.3 '
To be repeated
L

/
-Z

Code No. 33

Code No. 12

C

Unit: seconds
BR90025D

HOW TO ERASE SELF-DIAGNOSTIC RESULTS (Malfunction codes)
I . With the throttle fully open, turn the neutral position switch OFF (or a position other than P and N).
2. Turn ignition switch-ON without starting the-engine. Then, turn the pa;k/neutral position switch ON (or P
or N} and release the acceleration pedal.
As for the following items, self-diagnostic results can be erased if the conditions in the chart are met. In
this case the steps above are not necessary.
-

Malfunction code
No.

Malfunctioning part

Condition

Circuit for the communication line (DKR line) between
the TCS control unit and the throttle control unit

Normal communication synchronicity is achieved.

Start signal circuit

The start signal is detected next time the ignition
switch is turned ON.

ParWneutral position switch circuit

ParWneutral position switch operation is detected next
time the ignition switch is turned ON.

g
EC

AT

p
RS

TCSfABS SYSTEM
Self-diagnosis for Throttle Control Unit Control
System (Cont'd)
MALFUNCTION CODE/SYMPTOM CHART
Malfunction
code No.

Lamp ON

Malfunctioning part

SLIP

I

TCS OFF

I

ABS

Fail-safe
operation

-

0
0

Throttle motor sensor circuit

0
0

0
0

Circuit for the communication line between TCSfABS control unit and throttle control unit

0

0

-

0

Actuator system (Motor circuit is open or throttle motor
intermittently works.)

0

0

-

0

0
0
0

0
0
0

-

0
0
0

Throttle position sensor circuit

Throttle motor drive system (overcurrent)
Throttle motor relay circuit (shorted)
Throttle motor relay circuit (open)
Start signal circuit
Throttle motor return spring

I
I

ParWneutral position switch circuit
Normal
I

-

0

-

I
I

.

-

0

-

I

I

I

-

-

I

0

-

I

": Even when start signal circuit or parkheutral position switch circuit is abnormal, TCS operates properly. LED only blinks to
indicate the location of the malfunction.

STEERING SYSTEM

SECTION

ST

CONTENTS
ELECTRIC SUPER HICAS..............................................2
Pre-inspection.............................................................-2
System Description...................................................... 2
Com~onentParts Location .......................................... 3
Circuit Diagram............................................................4

RS

Control Unit Input/Output Signal Specifications ..........5
Preliminary Check....................................................... -7
Trouble Diagnosis with CONSULT ..............................7 M!gJ
Trouble Diagnosis with Self-diagnosis....................... 12
Symptom Chalt .......................................................... 14

ELECTRIC SUPER HICAS

INSPECTION BEFORE DRIVING
Check fluid leakage from power steering components (gear, pump, piping, etc.), and check whether the
fluid level is within the proper range.
Check whether tire size and inflation pressure are within the specified limits. Check also whether the
steering wheel is a genuine part, and whether a non-genuine control unit is attached.
Check whether wheel alignment is within the specified limits.
Check whether suspension system is modified, and whether the modification, if any, has increased the
vehicle weight.

INSPECTION DURING DRIVING
Check facts about trouble (what, when, where, who, why and how).
Check whether the engine is running in good condition.

System Description
This system contains two functions for SUPER HICAS: self-diagnosis function and fail-safe function.
For self-diagnosis function, refer to "SELF-DIAGNOSIS PROCEDURE on pages ST-7 and ST-12.

FAIL-SAFE FUNCTION
If the system detects some error, it halts the normal control and enters the fail-safe mode.
In this event, the system notifies the driver of a malfunction by turning ON the HICAS warning lamp.
The fail-safe mode is canceled when ignition switch is turned OFF. If, however, the fail-safe mode is caused
by a vehicle speed signal error, it is automatically canceled when the signal is restored before the ignition
switch is turned OFF.

HICAS WARNING LAMP
When the system is in normal condition, HICAS warning lamp is turned ON by switching the ignition ON, and
is turned OFF after engine has started.

ELECTRIC SUPER HICAS

Component Parts Location

EPS solenoid valve

sensor
C

I

,nHlCAS motor relay

Front right corner of trunk room

ELECTRIC SUPER HICAS
Circuit Diagram

-

cu

Sensor 1 signal
Sensor 2 signal

CU

m

f

Neutral signal

X E

ELECTRIC SUPER HICAS
Control Unit Input/Output Signal Specifications
USING CIRCUIT TESTER

Terminal No.

Specification

Check item
Control unit ground circuit

When control unit is disconnected

: Continuity exists.

Motor driving output signal
Motor voltage

When ignition switch is ON
(In fail-safe mode

EPS solenoid driving signal

When vehicle speed is 0 krn/h
When vehicle speed is 100 km/h

I Power supply voltage
I

Battery voltage
Data link connector for CONSULT (TX)

/

: Power supply voltage
: OV)
: Approx. 4.4
: Approx. 2.4

- 6.6V

- 3.6V

-

Engine speed signal

Measure tachometer driving signal.
Refer to EC section YECM (TCM) Input/Output Signal
Reference Value7 .

Ignition voltage

When ignition switch is ON
When ignition switch is OFF

Body
HlCAS waming lamp
ground
Output signal for driving motor relay

When HlCAS warning lamp is ON
When HlCAS warning lamp is OFF

: Approx. OV
: Approx. 12V

When ignition switch is ON
(In fail-safe mode

: Approx. 12V
: Approx. OV)

I

Data link connector for CONSULT (RX)
Stop lamp switch signal
(Send brake pedal operation signal to control unit.)

: Power supply voltage
: OV

When pedal is depressed
When pedal is not depressed

: Power supply voltage
: OV

v

Steering angle sensor 2

When steering wheel is turned, the voltage changes
between 0 and 5V.

Steering angle sensor 1
Body Ground circuit for rear steering angle sensor
ground
Neutral signal of rear steering angle sensor
Output signal of rear steering angle sensor
Power supply for rear steering angle sensor

Continuity exists.
-

--

When neutral

: Appro~.5V

I When neutral

: Approx. 2.4V

When ignition switch is ON
When ignition switch is OFF

: Approx. 5V
: Approx. OV

ELECTRIC SUPER HlCAS
Control Unit Input/Output Signal Specifications
(Cont'd)
USING CONSULT
The displayed output signals represent the control unit computed data. If the output circuit (harness) should be open,
correct values may be displayed.
Data monitor
Monitor item
VHCL SPEED SE
[km/hj

Condition

I

Specification

Approximately equal to speedometer reading

Vehicle is running or driving
wheels are turning.

Check item
Vehicle speed sensor circuit

--

STEERING ANG

Steering wheel is turned right

Steering angle (degrees) mea-

[R/Ll

or left.

sured from neutral position

NEUTRAL SIG
[ON-OFF]

Steering wheel is in neutral
position or turned right or left.

When neutral: ON
When turned (right or left): OFF

STOP LAMP SW
[ON-OFF]

Brake pedal operation

ENGINE SPEED
[r~ml

1"l

I

Engine is running.

I Actuator is operating in active I
test.

When pedal is depressed: ON
When pedal is not depressed:
OFF

Steering angle sensor circuit

Stop lamp switch circuit

Approximately equal to tachom- Wiring in ECM-HICAS control
unit
eter reading
In neutral position:
Approx. 2.4V
In right lock position:
Approx. 4.4V
in left lock position:
Approx. 0.4V

Rear steering angle sensing
system

System related to power steering solenoid output signal

POWER STR SOL
[A1

Vehicle speed is changed from
0 to 100 krnh.

At 0 km/h: Approx. 1.10A
At 100 krn/h: Approx. 0.48A

MOTOR CURRENT

Actuator is operating in active
test.

OK if output current is detected Motor and its power supply
system
during operation

PI

I Power supply system for

HlCAS RELAY
[ON-OFF]

When ignition switch is ON: ON

FAILSAFE
[ON-OFF]

Not in operation

WARNING LAMP
[ON-OFF]

Ignition switch is ON or engine
is running.

RR ST ANG-VOL
[Vl
MOTOR VOLTAGE

[vl
C/U VOLTAGE
[VI

Ignition switch is ON or engine
is running.

HICAS motor relay
System related to relay driving
1 signal from control unit
Check malfunctioning parts
using self-diagnosis and data
monitor.

When warning lamp is ON: ON
Warning lamp circuit
When warning lamp is OFF:
OFF
Approx. 5V

Rear steering angle sensing
system

Power supply voltage

Motor power supply system

Power supply voltage

Control unit power supply circuit

ELECTRIC SUPER HICAS

Preliminary Check
1.

2.
3.
4.

Check HICAS actuator for improper attachment and conditions.
Check the actuator for loose fasteners, damage in actuator
body, rods and dust boots, and grease leaks.
@
Check suspension system for improper attachment of links and
excessive play in axles.
Check all connectors for improper connections.
yp
'SU
Conduct inspection using self-diagnosis function.

AT

Trouble Diagnosis with CONSULT
DESCRIPTION
The trouble diagnoses have four modes: Self-diagnosis, Data
monitor, Active test and ECM Part Number modes.
Mode

Function

SELF-D'AGNoSTIC
RESULTS

Display

Displays results of self-diagnosis.

DATA MONITOR
0

ACTIVE TEST

ECM PART NUMBER

Mode switching

a

Used to find main causes of trouble,
based on the result of self-diagnosis.
Monitors, records and prints the input and Mode is switched simply by
The CONSULT screen disoutput of HICAS control unit.
touching the CONSULT
plays the data.
screen.
Used to find main causes of trouble,
based on the result of data monitor.
Used to check the operation of actuator
by sending driving signals to it.
Displays the part number of control unit.

SELF-DIAGNOSIS PROCEDURE
After connecting CONSULT to data link connector, start the
engine.

I

$

SELECT DlAG MODE

r

SELF-DIAG RESULTS

u]
I
+

DATA MONITOR
ACTIVE TEST
ECM PART NUMBER

u

B8

Touch START (on CONSULT display).
Touch HICAS.
Touch SELF-DIAG RESULTS.
Refer to CONSULT operation manual iiHICASJ'for details.

RS
Qkl
EL

ELECTRIC SUPER HICAS
Trouble Diagnosis with CONSULT (Cont'd)
SELF-DIAGNOSTIC RESULTS MOI
-

-

-

- -

Diagnostic item is detected when...

Diagnostic item
VEHICLE SPEED SEN
[SIGNAL TURN](.b)

Vehicle speed signal changes rapidly during
running.

CODE 54

Vehicle speed signal is not sensed for more
than 10 seconds while the vehicle is running
at 1,500 rpm of engine speed.

STEERING ANGLE SEN
[NO ANG SIG](.a)

Steering angle does not change for a while
when vehicle is running at 60 km,h or faster.

STEERING ANGLE SEN
[ANG SIG FIX](.e)

60" degrees or more for a certain time when

I

This code appears also when
engine is idling at 1,500 rpm
or faster for more than 10
, seconds; in this case, it does
not indicate abnormality.
I

Steering angle from neutral position is kept at
vehicle is running at 50 km/h or faster.

STEERING ANGLE SEN
[ANG F1X3O0](-g)

Steering angle from neutral position is kept at
30" degrees or more while vehicle travels a
certain distance.

STEERING ANGLE SEN
[NO NEUT SIG](.b)

No neutral signal (ON signal) is sensed while
vehicle travels a certain distance.

STEERING ANGLE SEN
[NEU SIG OFF](.c)

No neutral signal (ON signal) is sensed while
steering wheel is turned more than 360'.

STEERING ANGLE SEN
[NEUT SIG ON](.d)

No neutral signal (OFF signal) is sensed while
steering wheel is turned more than 50"
degrees.
-

-

--

a When steering wheel is turned 360" after the

STEERING ANGLE SEN
[OFFSET NEUTJ(.f)

detection of neutral signal, the neutral signal is
sensed for a certain period of time.
For a certain period of time, input signal from
main sensor shows abnormality against sensor
power supply voltage.

RR ST ANGLE SENSOR
[MAIN SIGNAL](.a)

a When input signal from main sefisor shows

2.5+1 V, input signal from sub-sensor shows
abnormality against sensor power supply voltage for a certain period of time.

RR ST ANGLE SENSOR
[SUB SIGNALJ(.b)

-

RR ST ANGLE SENSOR
[OFFSET SIG](-C)
RR ST ANGLE SENSOR
[ABNORMAL VOL](.d)
ENG REV SIGNAL
[ABNORMAL SIGNAL]
MOTOR VOLTAGE
[LOW VOLTAGE](-a)

-

Input signals from main sensor and sub-sensor show more than a certain amount of difference from each other.

r

The voltage is higher or lower than the standard value.
a Engine speed shows an abnormally low value

for a certain period of time when vehicle is
running at 2 krnlh or faster.
a When HlCAS motor relay is ON, motor power

supply voltage shows an abnormally lower
value than ignition power supply voltage.

MOTOR VOLTAGE
[BAD OBSTRCT](.b)

When control unit keeps motor power OFF, the
motor power voltage shows a non-zero value
for a certain period of time.

MOTOR OUTPUT
[ABNORML SIG](.a)

When a motor current is more than IOA, the
actual output of the motor shows an abnormally low value for a certain period of time.

- -

MOTOR OUTPUT
[REV CURRENTJ(-C)

When motor output is kept ON, a reverse current is flowing.

Remarks

ELECTRIC SUPER HlCAS
Trouble Diagnosis with CONSULT (Cont'd)
Diagnostic item

Diagnostic item is detected when ...

MOTOR OUTPUT
[NO CURRENTJ(.d)

When motor output is kept OFF,a current is
flowing.

MOTOR OUTPUT
[OVERCURRENTl(.e)

When motor output is kept ON, an overcurrent
is flowing.

MOTOR OUTPUT
[MOTOR LOCK](.b)

Signal from rear steering angle sensor does
not change for a certain period of time while a
motor current of 17A or more is flowing.

VEHICLE SPEED SEN
[RAPD SIGN CHANGE21

When vehicle is running, vehicle speed signal
is not sensed for a certain period of time after
it has changed rapidly.

VEHICLE SPEED SEN
[NO SIGNAU]

"VEHICLE SPEED SEN [RPD SIG CHG2J"
has occurred previously, and vehicle speed
signal is not sensed for a certain period of
time.

VEHICLE SPEED SEN
[NO SIGNAL31

'VEHICLE SPEED SEN [RPD SIG CHG2]"
has not occurred previously, and vehicle
speed signal is not sensed for a certain period
of time while the vehicle is running at 1,500
rpm of engine speed.

CONTROL UNIT
[ABNORMAL 1-61

Control unit is malfunctioning.

I

Remarks

I
I

I

ELECTRIC SUPER HICAS
Trouble Diagnosis with CONSULT (Cont'd)
DATA MONITOR PROCEDURE
1. After connecting CONSULT to data link connector, start the
engine.

connector for

b

SELECT DlAG MODE

2.

0
1

Touch "START", "HICAS" and "DATA MONITOR".

b

SELF-DIAG RESULTS
DATA MONITOR
ACTIVE TEST
ECM PART NUMBER

Ik

SELECT MONITOR ITEM

I

SELECTION FROM MENU

I

1

u

3. Select items to be monitored.
(1) When "ALL SIGNALS" is selected, touch "START".
(2) When "SELECTION FROM MENU" is touched, "SELECT
TEST ITEM" screen appears. Touch appropriate items on that
screen, and touch "ENTER" and "START".
(3) Touch "PRINT", if printout is required.

ELECTRIC SUPER HtCAS
Trouble Diagnosis with CONSULT (Cont'd)
DATA MONITOR MODE

1

VHCL SPEED SE

Monitor item

(

/1 0 II 0 I1

Display

Main
item

(kmh)

NEUTRAL SIG

(ON-OFF) (

STOP LAMP SW

(ON-OFF)

I

0 ( 0
0 I 0
I

1

RR ST ANG.MAI

(V)

RR ST ANG.SUB

(V)

HlCAS RELAY
FAILSAFE
WARNING LAMP

Shows a value calculated from vehicle speed sensor signal.

I Shows whether steering wheel is in neutral position (ONIOFF).
IShows whether stop lamp switch is ON or OFF.
Shows the engine speed caicuiated from crankshaft position sensor signal.

ENGINE SPEED

MOTOR CURRENT

- Remarks

After battery has been disconnected and connected again, an
abnormal value is shown until neutral position (0")is detected.

STEERING ANG

POWER STR SOL

-

Menu
item

I

)('
(A)

I

0
0

I

I

0
0

IShows the output voltage from rear steering angle main sensor.
Shows the output voltage from rear steering angle sub-sensor.

'0 I 0' 1I

Shows the control unit's control current for power steering solenoid.
--

-

-

-

-

-

-

shows the control unit's control current for HICAS motor relay.

/ 0 I 0 I Shows whether HlCAS motor relay is ON or OFF.
(ON-OFF) I 0 I 0 I Shows whether fail-safe function is in operation (ONIOFF).
(ON-OFF) I Q I 0 ) Shows the control unit3 ON-OFF status of HlCAS warning lamp.
(ON-OFF)

Shows the power supply voltage from HICAS control unit to rear
steering angle sensor.
CIU VOLTAGE

(V) (

0

I

0

IShows the power supply voltage to HICAS control unit.
Shows the power supply voltage from HICAS control unit to
HlCAS motor.

MOTOR VOLTAGE
VOLTAGE
PULSE

(V)
(mi, Hi and %I

I

-

I

IShows the measured value by voltage probe.
-

0

1 / 1
-

0

-

-

- --

Shows the measured value by pulse probe. If measurement is
impossible, "#" appears. The "#" mark is shown also on the left of
final data until measurement is completed.

ELECTRIC SUPER HICAS
Trouble Diagnosis with CONSULT (Cont'd)
ACTIVE TEST PROCEDURE
After connecting CONSULT to data link connector, start the
engine.

connector for

'@g

Touch "START", "HICAS and "ACTIVE TEST".

SELECT DlAG MODE

SELF-DIAG RESULTS
i

DATA MONITOR
ACTIVE TEST
ECM PART NUMBER

u
1

I

I lhil

SELECT MONITOR ITEM

I

SELECTION FROM MENU

I

l

1

Touch 'SIMULATE" and "SELECT MONITOR ITEM".
Turn the steering wheel right or left to make the rear actuator
operate.
Reference values in normal condition
Rear steering
Rear steering
angle main sensor angle sub-sensor

Steering angle
sensor
--

0" (Neutral)

I

2.4V

I

2.4V

Motor current

I

No (Approx OV)

--

I

START

I

R 90"

4.4V

4.4V

L 90"

0.4V

0.4V

Yes (Variable)

ECM PART NUMBER
After connecting CONSULT to data link connector, turn ignition
switch ON.
Touch "START', "HICAS" and "ECM PART NUMBER7'.
Part number printed on the control unit label and part number
shown on the CONSULT screen are as follows:
2-door model: 28505 AAI 00
4-door model: 28505 A A l l 0

Trouble Diagnosis with Self-diagnosis
DESCRIPTION
If the system detects some error while vehicle is running, it notifies
the driver of a malfunction by turning ON the HICAS warning lamp,
and at the same time, it halts the normal control and enters the
fail-safe mode.

SELF-DIAGNOSIS PROCEDURE
1. Start the engine.
2. Within 10 seconds after the engine has started, turn the steering wheel more than 20" right-to-left and repeat this 5 times or
more, and then depress the brake pedal 5 times or more.

ELECTRIC SUPER HICAS
Trouble Diagnosis with Self-diagnosis (Cont'd)
DIAGNOSTIC ITEM INPUT
1. Move the vehicle one or two meters at a very low speed.
2. Turn the steering wheel more than 20" right-to-left once or
more.

DISPLAY OF SELF-DIAGNOSTIC RESULTS

Example: Motor power supply and steering
angle neutral signal are abnormal.
1s ,

The results of self-diagnosis are shown by flash patterns of HlCAS
warning lamp.

BR

2H z

Display when past data shows that fail-safe function
has been activated previously

ON
OFF

/

/

r

I

/

Tens

Units

I

Tens

Units

Only an abnormal item is indicated by the pattern shown in the
left figure. The pattern is repeated.

Second
display
starts.

Display when past data shows that fail-safe function
has not been activated previously

Example: Motor power supply and steering
angle neutral signal are abnormal.
1s- ,

-

0.8s A

ON
OFF-

,2S

-

5s 55

/

Tens
(12)

1s

1.8s

v".2S

-jUnits

If all items are normal, HlCAS warning lamp flashes at a frequency of 4 Hz.
If system is in fail-safe mode, only an abnormal item is indicated by the pattern shown in the left figure. The pattern is
repeated.

,1.8S
-

' 1 7,

I - -

-.--

,

I_

&lnd,
display
Units starts.

Tens
(23)

/

STE0109D

MALFUNCTION CODE CHART
Malfunction code No.

11

1

Diagnostic item

I Control unit

12

Motor power supply

13

Motor output

21
22

[~

z speed
e signal

ISteering angle signal
-

23
24

25
33

] S t e e r i n g angle neutral signal

IRear steering angle main sensor signal
I Rear steering angle sub-sensor signal

I Engine speed signal

HOW TO ERASE SELF-DIAGNOSTIC RESULTS
If past record shows that fail-safe function has been activated
previously, use CONSULT, or leave the battery disconnected for
more than 30 minutes to clear the memory.

~8

EL

sD

ELECTRIC SUPER HICAS

Symptom Chart
Diagnostic item

Self-diagnosis

CONSULT

MalfuncDiagnostic
tion
item
code
No.

Diagnostic item

Control unit

CONTROL UNIT [ABNORMAL 1-61

Motor power
supply

MOTOR VOLTAGE [LOW VOLTAGE](-a)
MOTOR VOLTAGE [BAD OBSTRCTJ(.b)
MOTOR OUTPUT [ABNORML SIG](.a)
-

-

MOTOR OUTPUT [MOTOR LOCq(-b)
Motor output

MOTOR OUTPUT [REV CURRENT](-C)
MOTOR OUTPUT [NO CURRENT(-d)
MOTOR OUTPUT [OVERCURRENTI(-e)
CODE 54
-

-

VEHICLE SPEED SEN [NO SIGNAL21
Vehicle
VEHICLE SPEED SEN [NO SIGNAL31
speed signal
VEHICLE SPEED SEN [SIGNAL TURNJ(.b)
VEHICLE SPEED SEN [RPD SIG CHG21
STEERING ANGLE SEN [NO ANG SIG](.a)
Steering
angle signal

STEERING ANGLE SEN [ANG SIG FIXJ(.~)
STEERING ANGLE SEN [ANG FIX30°](-g)
-

- --

--

-

-

STEERING ANGLE SEN [NO NEUT
SIG](-b)
STEERING ANGLE SEN [NEUT SIG
Steering
OFFI(4
cg
angle neutral
STEERING
ANGLE
SEN
[NEUT
SIG
signal
ONI(.d)
STEERING ANGLE SEN [OFFSET
NEUTJ(-f)
RR ST ANGLE SENSOR [MAIN
Rear steerSIGNAL](-a)
ing angle
RR ST ANGLE SENSOR [ABNORML
main sensor
VOL](.d)
signal
RR ST ANGLE SENSOR [OFFSET SIG](.c)
-

RR ST ANGLE SENSOR [SUB SIGNAL](.b)

Rear steering angle
sub-sensor
signal

RR ST ANGLE SENSOR [ABNORML
VOL](.d)

Engine
speed signal

ENG REV SIGNAL [ABNORMAL SIGNAL]

RR ST ANGLE SENSOR [OFFSET SIGJ(C)

ELECTRIC SUPER HICAS
Symptom Chart (Cont'd)
Diagnostic item

Self-diagnosis

CONSULT

Malf unction Diagnostic
item
code
No.

Diagnostic item

Cannot enter self-diagnosis mode.
HICAS warning lamp is not tumed ON by switching the ignition
3N.
IICAS warning lamp is turned ON by switching the ignition ON but
s not turned OFF by starting the engine.
llumination of HICAS warning lamp has occurred after engine
;tarted.
Steering effort does not change with vehicle speed.
rhere is an abnormal noise.
Self-diagnosis with CONSULT displays "CODE54".

RESTRAINT SYSTEM

SECTION

RS

CONTENTS
TROUBLE DIAGNOSES - Supplemental
Restraint System (SRS) ................................................. 2
Component Parts Location..........................................2
Precautions ................................................................. -2
Circuit Diagram ............................................................2

Preliminary Check....................................................... .3
Trouble Diagnoses with CONSULT .............................3
Trouble Diagnoses without CONSULT ........................
Symptom Chart ............................................................ 9
Component Parts Inspection ..................................... 10
T?

2
1

-3

TROUBLE DIAGNOSES - supplemental Restraint System (SRS)
Component Parts Location
Passenger air bag module
Driver air bag module

Diagnos~ssensor unit
S~deair bag nodule

Satell~tesensor

Seat belt pre-tensloner

SRB0568D

Precautions
To perform system diagnosis, use self-diagnosis function and
CONSULT.
Do not use electrical test equipment such as a circuit tester
because any wrong operation caused by a weak electric current of a tester must be prevented.

Circuit Diagram

TROUBLE DIAGNOSES - Su~plementalRestraint Svstem (SRS)

Preliminary Check
Check battery voltage and specific gravity.
When battery voltage drops to less than approx. 9V, the
"AIR BAG" warning lamp starts flashing (indicating a malfunction).
Check the connections of component connectors.
Check that the fuse is not blown.

-

Gj
3F

Trouble Diagnoses with CONSULT
SELF-DIAGNOSIS PROCEDURE
Connect CONSULT to data link connector on the vehicle.
Turn ignition switch "ON".
Touch "AIR BAG" on the CONSULT screen.

83

connector for

Touch an appropriate mode key on "SELECT DlAG MODE"
screen.
The self-diagnostic result for the selected mode is displayed.
Repair or replace the malfunctioning part according to the selfdiagnostic result.
Touch "PRINT, if printout is required.
After repairing the malfunction, touch "SELF-DIAG
[CURRENT]", and after checking that "NO SELF DIAGNOSTIC
FAILURE INDICATED" is shown on the display, touch
"ERASE.
For seat belt pre-tensioner system, the diagnostic procedure is completed when "NO SELF DIAGNOSTIC FAILURE
INDICATED" is displayed.

C

SELF-DlAG [CURRENT]

* NO SELF DIAGNOSTIC
FAILURE INDICATED.
FURTHER TESTING
MAY BE REQUIRED.

1-

$

*

PRINT

Return to "SELECT DlAG MODE" screen and touch "SELFDlAG [PAST]".
10. After checking that "NO SELF DIAGNOSTIC FAILURE INDICATED" is displayed on the "SELF-DIAG [PAST]" screen, finish the diagnosis.

9.

* NO SELF DIAGNOSTIC
FAILURE INDICATED.

FURTHER TESTING
MAY BE REQUIRED.

**

t

PRINT
SRS609

gL

89

TROUBLE DIAGNOSES - Supplemental Restraint System (SRS)
Trouble Diagnoses with CONSULT (Cont'd)
SELF-DIAGNOSTIC CODE CHART
--

Diagnostic item
NO SELF-DIAGNOSTIC
FAILURE INDICATED

1

I

Explanation

Repair order

I

NO malfunction is detected.

-

AIRBAG MODULE
iOPENl

Driver air bag module circuit is open (including the
spiral cable).

AIRBAG MODULE
IVB-SHORTI

Driver air bag module circuit is shorted to some power 1. Visually check the wiring harness c~nnection.
2. Check conbnuity of the spiral cable.
supply circuit (including the spiral cable).
3. Replace driver air bag module.
Driver air bag module circuit is shorted to ground
4. Replace the diagnosis sensor unit.
(including the spiral cable).
5. Replace the harness if it has visible damage.

AIRBAG MODULE
IGND-SHORTI
AIRBAG MODULE
[SHORT]
--

CONTROL UNIT
ASSIST N B MODULE
[OPEN]

Driver air bag module circuits are shorted to each
other (includina the s ~ i r acable).
l

I
I

I
I

1. Visually check the diagnosis sensor unit connection.
2. Replace t9e diagnosis sensor unit.

Diagnosis sensor unit is malfunctioning.
Passenger air bag circuit is open.

ASSIST N B MODULE
NB-SHORTI

Passenger air bag circuit is shorted to Some Power
supply circuit.

ASSIST N B MODULE
[GND-SHORV

Passenger air bag circuit is shorted to ground.

ASSIST N B MODULE
lSHORTl

Passenger air bag circuits are shorted to each other.

SlDE MODULE RH
{OPEN]

Driver side air bag circuit is open.

SlDE MODULE RH
[VB-SHORT]

Driver side air bag circuit is shorted to Some power
supply circuit.

SlDE MODULE RH
[GND-SHORTI

Driver side air bag circuit is shorted to ground.

SlDE MODULE RH
[SHORT]

Driver side air bag circuits are shorted to each other.

I

,

1.
2.
3.
4.

Visually check the wiring hamess connection.
Replace passenger air bag module.
Replace the diagnosis sensor unit.
Replace t!!e harness if it has visible damage.

1.
2.
3.
4.

Visually check the wiring hamess connection.
Replace driver side air bag module.
Replace the diagnosis sensor unit.
Replace the harness if it has visible damage.

Passenger side air bag circuit is open.

I

SIDE MODULE LH
NB-SHORTI

Pa~Sengefside air bag circuit is shorted to Some
power supply circuit.

- 2.1.

SlDE MODULE LH
[GND-SHORT]

Passenger side air bag circuit is shorted to ground.

SlDE MODULE LH
ISHORTl

Passenger side air bag circuits are shorted to each
other.

SATELLITE SENS RH
[UNIT FAIL]

Driver satellite sensor is malfunctioning.

1. Visually check driver satellite sensor connection.
2. Replace the driver satellite sensor.
3. ReDlace the harness if it has visible damage.

SATELLITE SENS RH
[COMM FAIL]

Driver satellite sensor is malfunctioning.
Diagnosis sensor unit is malfunctioning.
Wiring harness between diagnosis sensor unit and
satellite sensor is damaged.

1. Visually check driver satellite sensor connection.
2. Replace the driver satellite sensor.
3. Replace the diagnosis sensor unit.
4. Replace the harness if it has visible damage.

SlDE MODULE LH
[OPEN]

Visually check the wiring harness connection.
Replace passenger side air bag module.
3. Replace the diagnosis sensor unit.
4. Replace the harness if it has visible damage.

1. Visuallv check the connection of passenqer satellite

0i

SATELLITE SENS LH
[UNIT FAIL]

0

sensor:
2. Replace C!e passenger satellite sensor.
3. Re~lacethe harness if it has visible damage.

Passenger satellite sensor is malfunctioning.

1. Visually check the connection of passenger satellite

Passenger satellite sensor is malfunctioning.
Diagnosis sensor unit is malfunctioning.
Wiring harness between diagnosis sensor unit and
satellite sensor is damaged.

SATELLITE SENS LH
[COMM FAIL]
I

sensor.

J.

:4. ~~~/Replace
~~~ E;the harness
$~~,","$,"~~~~~t",$fnsOr'
if it has visible damage.

DRIVE PRE-TENSIONER
[OPENNB-SHORT]

The circuit for the driver seat belt pre-tensioner is
open or shorted to some power supply circuit.

DRIVE PRE-TENSIONER
[GND-SHORTJ

The circuit for the driver seat belt pre-tensioner is
shorted to ground.

ASSIST PRE-TENSIONER
[OPENNB-SHORT]

The circuit for the passenger seat belt pre-tensioner is 1. Visually check the wiring harness connection.
open or shorted to some power supply circuit.
2. Replace passenger seat belt pre-tensioner.
The circuit for the passenger seat belt pre-tensioner is 3. Replace the diagnosis sensor unit.
4. Replace the harness if it has visible damage.
shorted to ground.

ASSIST PRE-TENSIONER
[GND-SHORT]
I

a

1. Visually check the wiring harness connection.
2. Replace driver seat belt pre-tensioner.
3. Replace the diagnosis sensor unit.
4. Replace the harness if it has visible damage.

I

The screens for "SELF-DIAG [CURRENTJ","SELF-DIAG [PAST]" and "TROUBLE DlAG RECORD" share the same message.
Follow the repair procedures in numerical order. Check whether a malfunction is eliminated each time a repair item is
finished, and when the malfunction is eliminated, further repair work is not required.
After repairing the system, touch "ERASE" to clear the memory and check with CONSULT again.
If both seat belt pre-tensioner systems on the driver seat and passenger seat have failed at the same time, only one of
the two failures is displayed first. The other failure is displayed after the first failure is repaired. For seat belt pre-tensioner
systems, only "SELF-DIAG [CURRENTJ" is displayed; "SELF-DIAG [PASTJ" and "TROUBLE DlAG RECORD" are not displayed.

RS-4

TROUBLE DIAGNOSES - Supplemental Restraint System (SRS)
Trouble Diagnoses with CONSULT (Cont'd)
TROUBLE DIAGNOSIS RECORD
If a malfunction has occurred but is not recorded on seif-diagnosis,
it may be caused by some past malfunction. In such a case, past

malfunctions can be found by selecting "TROUBLE DlAG
RECORD" in Diagnosis mode.
The "TROUBLE DlAG RECORD" can be selected for SRS air
bag system only.

Trouble Diagnoses without CONSULT
SRS AIR BAG SYSTEM
Self-diagnosis
The diagnosis modes are User mode and Diagnosis mode.
Switching between the two modes is accomplished by using
ignition switch and driver door switch.

User mode

Turn diver door switch 'ON" and
'OFF" at least 5 times within 7
seconds after sw~tching the
ignition "ON".

-

-

Diagnosis

mode
Turn driver door switch "ON"
and "OFF at least 5 , times
within 7 seconds after sw~tching
the ignition "ON".

k

b

A

IGN SW: OFF to ON
IGN SW: OFF to ON
When lamp is not flashing (indicating no malfunction) in User mode, operating the door switch cannot change
the mode to Diagnosis mode.
When no malfunction is detected in Diagnosis mode, turning the ignition switch from "OFF" to "ON" changes
the mode to User mode.

SRB0395D

User mode
No malfunction is detected. (Lamp OFF)
IGN SW: ON
ON

OFF-

7 sec.

System is malfunctioning. (Lamp flashes)
ON
OFF

0.5see.
0.5 sec.

Air bag is deployed or all of diagnosis sensor unit, air bag power supply circuit and AIR BAG warning lamp circuit are malfunctioning. (Lamp ON)
ON
OFF

Either air bag sensor unit or AIR BAG warning lamp circuit is malfunctioning. (Lamp OFF)
IGN SW: ON
OFF

+

SRB0412D

The display indicating a malfunction (flashes) keeps operation
until reset. If, however, the malfunction is a low battery voltage (less than 9V), the display changes from flashing to normal operation when the battery voltage has returned to normal
(more than 9V).

TROUBLE DIAGNOSES - Supplemental Restraint System (SRS)
Trouble Diagnoses without CONSULT (Cont'd)
Diaanosis mode
-

---

-

Warning lamp fiash pattern

Diagnostic item

Malfunctioningpart

IGN SW: ON
No malfunction is detected.
AIR BAG warning lamp

Unit: sec.

(LED)is checked.
Two flashes

Driver air bag module

u
2

I

Short-circuit between wires

H-+H
2 0.5

Unit: sec.

Seven flashes
ON

Diagnosis sensor unit

Unit malfunction

OFF

F

7

-3

C

y

H H f t

2

Open circuit
Passenger air bag module

Shorted to power supply circuit

ON

Shorted to ground

OFF

H

2

Unit: sec.

Eight flashes
7

0.5

2

2

Short-circuit between wires
-

0.5

2

Unit: sec.

-

Open circuit

One flash
ON

Driver side air bag

OFF

7

2

3

I

Open circuit

0.5

Unit: sec.

Two flashes

Passenger side air bag

w+
2
6.5

Open circuit
--

--

-

Shorted to power supply circuit
Driver satellite sensor

--

-

p
p

-

Unit: sec.

I

Satellite sensor malfunction
-

%

-

I
I

Shorted to ground

Three flashes
ON

OFF

1

7

Short-circuit between wires
Unit: sec.

Diagnosis sensor unit malfunction
Satellite sensor malfunction
Four flashes

Open circuit
Passenger satellite sensor

ON

Shorted to power supply circuit

OFF

Shorted to ground
2

Short-circuit between wires
Diagnosis sensor unit malfunction
After
after

I

0.5

0.5

Unit: sec.

-04630

TROUBLE DIAGNOSES - Supplemental Restraint System (SRS)
Trouble Diagnoses
without CONSULT (Cont'd)
I

\

@ Flash pattern when no malfunction is detected
IGN SW: ON
ON
7
OFF

I

LL-I

I I

@ Flash pattern when one unit (driver air bag module) is malfunctioning
IGN SW: ON

a through c are repeated.

7

@ Flash pattern when two units (driver air bag module and diagnosis sensor unit) are malfunctioning

IGN SW: ON

a

ON
OFF A-

b

a

c

Repeated

7

0.5*+
@ Flash pattern when one unit (driver side air bag module) is malfunctioning
IGN SW: ON

a

a c

d

Repeated

I U In

7

Q Flash pattern when two units (driver and passenger side air bag module) are malfunctioning
IGN SW: ON
a
d
a c
Repeated
ON
OFF

7

I n ,K

a Flash pattern when two units (driver air bag and side air bag module) are malfunctioning
IGN SW. ON

a

b

a

c

d

Repeated

7

a

c

d

I5
a e

U n t seconds

~ ~ ~ 0 3 8 3 ~

TROUBLE DIAGNOSES - Supplemental Restraint System (SRS)
Trouble Diagnoses without CONSULT (Cont'd)
How to erase self-diagnostic results (Reset)
After repairing the system and while staying in Diagnosis mode,
check that the system has returned to normal; then, turn the ignition switch "OFF' and then back "ON". The mode returns to User
mode and the diagnosis record is erased.

SEAT BELT PRE-TENSIONER SYSTEM
Self-diagnosis
Only User mode is available.
.User mode
Driver seat belt
(Seat belt buckle
switch)

Warning lamp flash pattern

Malfunctioning part

Diagnostic item

IGN SW: ON

Fastened (OFF)

No malfunction is
detected.

Unfastened (ON)

No malfunction is
detected.

I

IGN SW: ON

System restored

Fastened (OFF)
&

+o.s

(

IGN SW:

ON

Sec.

I

Fastened

Driver and passenger
seat belt pre-tensioner
circuits
Diagnosis sensor unit

Shorted to power supply circuit
Open circuit
Shorted to ground
Diagnosis sensor unit
malfunction

Unfastened (ON)
-'n~0.5

I

I

+-OS

sec.
sec.

I

The display indicating a malfunction (flashes) changes to the display indicating no malfunction when the malfunction is
repaired.
After pre-tensioner is activated, the warning lamp stays "ON".

TROUBLE DIAGNOSES - Supplemental Restraint System (SRS)
Symptom Chart

I
I

Trouble phenomenon
BAG warning lamp does
not turn on. (All other warning lamps turn on.)

Malfunctioning unit

I
I

Possible cause

AIR BAG warning lamp circuit

Warning lamp and internal circuit of combination meter are
faulty.
Harness between diagnosis sensor unit and combination
meter is faulty (shorted).

Diagnosis sensor unit

Diagnosis sensor unit is faulty.

I

AIR BAG warning lamp does
not turn off (always ON).
(AIR BAG warning lamp circuit

0

Air bag power fuse has blown.
Air bag power harness is faulty.

0

Harness between diagnosis sensor unit and combination
meter is faulty (open).
Internal circuit of combination meter is faulty.

0

Air bag power supply circuit

I

I

Diagnosis sensor unit

When driver seat belt is fastened(buckleswitchisoff)
and ignition switch is turned
on, the SEAT BELT warning
lamp does not illuminate for
seconds. (All other warning
lamps illuminate.)

Warning lamp and internal circuit of combination meter are
faulty.
Harness between diagnosis sensor unit and combination
meter is faulty (open).

SEATBELTwarninglampcircuit

1

Air bag power

I 2 ..3

L-L

BR

Diagnosis sensor unit is faulty.

Low battery voltage (Less than 9V)
Conduct either diagnosis with CONSULT (self-diagnosis, trouble diagnosis record) or diagnosis
without CONSULT (self-diagnosis), and repair the malfunctioning part.
After repairing the malfunctioning part, erase the memory for malfunction record.

AIR BAG warning lamp
flashes.

P-$ ;
'bJ

0

Air bag power fuse has blown.
Air bag- .power harness is faulty.

0

Diagnosis sensor unit is faulty.

circuit

Diagnosis sensor unit

ST

1
HA

su
fa>

Harness between diagnosis sensor unit and combination
meter is faulty (shorted).

When driver seat belt is fas- SEAT BELT warning lamp circuit
tened (buckle switch is off)
,
and ignition switch is turned
on, the SEAT BELT warning Driver seat belt buckle switch circuit
lamp does not turn off 7 seconds later.
Diagnosis sensor unit

I

When driver seat belt is fas-.
tened (buckle switch is off)
and ignition switch is turned
Seat belt pre-tensioner circuit
on, the SEAT BELT warning
lamp turns on, and 7 seconds later, flashes.

I

I

Harness between combination meter and driver seat belt
buckle switch is faulty (shorted).
Driver seat belt buckle switch is faulty (sticking).
Diaqnosis sensor unit is faultv.

I
I
I

Conduct either diagnosis with CONSULT or diagnosis without CONSULT, and repair the malfunctioning part.

When driver seat belt is not
fastened (buckle switch is on)
Driver seat belt buckle switch ground harness is faulty
and ignition switch is tumed
Driver seat belt buckle switch circuit
on, the SEAT BELT warning
tae;): : !
belt buckle switch is faulty (contact intermitlamp turns off about 7 sectence).
onds later.

I

I

I

If the flashing of AIR BAG warning lamp is caused by low battery voltage, self-diagnosis mode cannot be switched from User
mode to Diagnosis mode. In this case, diagnosis with CONSULT displays "NO SELF-DIAGNOSTIC FAILURE INDICATED".

TROUBLE DIAGNOSES

- Supplemental Restraint System (SRS)
Component Parts Inspection

Air bag module
side connector

SPIRAL CABLE
Disconnect the spiral cable connectors from air bag module
and air bag sensor unit.
Check continuity between terminals.
1 - 1, 2 2: Continuity shouid exist.

-

HEATER &
AIR CONDITIONER

SECTION

HA

GI
EG

CONTENTS
COOLER CYCLE ............................................................. 2
Deodorizing Clean Filter ..............................................2
FULLY AUTOMATIC AIR CONDITIONER ...................... 3
System Description......................................................3
Component Parts Location..........................................4
Circuit Diagram ............................................................ 5
Automatic Amplifier Input /Output Signal
Specifications.............................................................. .6

Performance Test ......................................................... 8
Trouble Diagnosis by Gauge Pressure .....................10
Trouble Diagnosis by Self-diagnosis Function .......... 11
Magnet Clutch System Check ................................... 15
Blower Fan Motor System Check.............................. 15
Actuator System Check ............................................. 16
Trouble Diagnosis for Each Symptom .......................17
Component Parts Inspection ..................................... 18

Rs

I
EL
SD

COOLER CYCLE

Deodorizing Clean Filter
REMOVAL
1. Remove the instrument lower assist panel.
2. Remove the clip, and remove the cover.
3. Remove the deodorizing clean filter assembly from the blower
and cooling unit.

Deodorizing clean

REPLACEMENT
Replacement period for deodorizing clean filter: Every year or
every 12,000 km
Write the necessary information on the label, and stick it in the
glove box location indicated in the left figure.

FULLY AUTOMATIC AIR CONDITIONER
System Description
The fully automatic air conditioner system utilizes sensors to detect the in-vehicle temperature, ambient
temperature, temperature of air passing through the evaporator, and sunload. The detected values are
compared with the temperature adjustment dial setting, and calculated by the microcomputer within the
automatic amplifier. The air inlet and outlet temperatures and airflow rate are adjusted in order to main- @
tain the in-vehicle temperature.
When an abnormal pressure occurs within the cooler cycle [gauge pressure: approx. 2.7 MPa (28 kg/
cm2G) or higher; or approx. 0.18 MPa (1.8 kg/cm2-G)or lower] the refrigerant pressure sensor operates, Ec
and stops the compressor.
The ECM turns off the air conditioner relay, and stops the compressor during engine high load.
The blower fan motor utilizes a brushless motor, and controls the airflow with a built-in IC that recognizes AT
the driver signal (pulse) from the automatic amplifier.
Step-motor type actuators are employed for intake door, mode door, and air mix door. They are rotated in
response to the signal (pulse) step quantity transmitted from the automatic amplifier to control the target BR
door position.

FULLY AUTOMATIC AIR CONDlTlONER
Component Parts Location

,

Intake door actua:or
Sunload sensor

B&wer

I

Engine room, right relay box

/

Front defros!er grille (left)

7

IJj

pressure sensor

0 Blower fan motor relay

@ Radiator core lower support

Air conditioner relay

@ Ambtent sensor

II

a

Blower and cooling unit

t

Cluster lid A

I

Blower fan motor

I

0

Fuse block, rear face

Liquid tank

Blower and cooling unit

lnta
,?efros:er gnlie (left)

A r condlboner relay

@ Refrigerant

temperature sensor

fan motor

1

?

Controller

1

\@

Compressor

I

@

Englne room. front left

Instrument panel, center

I

I

FULLY AUTOMATIC AIR CONDITIONER

-

Circuit Diagram

Blower tan motor relay

Rear defogger

output
Rear defogger display inpui*

IA

Combination meter (meter UU)
Rear defogger relay

I

Compressor

Blower fan driver signal

Refrigerant
Pressure sensor

NP ON output
N P display input

Actuator driver
power source

Lighting SW (1 step)
Illumination
power source

lntake door actuator

lntake driver 1
lntake driver 2
lntake driver 3
lntake driver 4

Air mix driver 1
Air mrx drive: 2
Air mix driver 3

Y-lkEka

Air mix door actuator

Air mix driver 4

Mode driver 1 1
Mode driver 2
Mode driver 3
Mode driver 4
INCAR

In-vehicle sensor

AM B

lluminatron groun:!

Water TEMP

Ambienl sensor

SUN
iND

INTAKE

Sensor around

Automatic amp!iher

Sunload sensor

FULLY AUTOMATIC AIR CONDITIONER
Automatic Amplifier Input /Output Signal
Specifications
Measurement condition

Terminal
No.

Signal name
Battery power source

6

1

8

Ignition
switch
OFF

Ignition power source

ON

lllumination

ON

I
I

13

1

Lighting switch: 1 step

Rear defogger switch: ON
Rear defogger switch: OFF

Rear defogger display input signal

1 Ground
1 Actuator driver power source

1 ACC power source

ON

-I--

': Refer to "Component Parts Inspectionn.

1
I

1
1

-

-

ON
ACC

I
I

-

Approx. 12
Approx. 12
Approx. 12
Approx.

o

Approx. 0
Approx. 5

Approx. 12
Approx. 0
Approx. 0
Approx. 5

I

Approx. 0
Approx. 0
Approx. 5

Blower fan motor: ON
Blower fan motor: OFF

1

Approx. 12

I

Approx. 12

I

Approx. 0

Right after temperature adjustment
dial operation

Fan control signal

Sensor ground

I
I

Compressor: ON
Compressor: OFF

Air mix door actuator driver signal

21

Lighting switch: 1 step

Rear defogger switch: ON
Rear defogger switch: OFF

Rear defogger ON output signal

AfP display output signal (only
when connected)

12

-

r

Compressor ON signal
10

-

I

I

v

Operation or condition

Thermal transmitter

7

Specification

I

Fan speed: Manual 1st

ON

I

-

FULLY AUTOMATIC AIR CONDITIONER
Automatic Amplifier Input /Output Signal
Measurement condition

Terminal
No.

Signal name

Operation or condition

Mode door actuator driver signal

Right after mode switch (air outlet
switch) operation

lntake door actuator driver signal

Right after FRE switch or REC
switch operation

I
24

Ignition
switch

Specification V

I

26

IAmbient sensor

''

/

133
34

35

36

A/P ON output (only when connected)

Blower fan motor: ON
Blower fan motor: OFF

Mode door actuator driver signal

Right after mode switch (air outlet
switch) operation

lntake door actuator driver signal

Right after FRE switch or REC
switch operation

1 In-vehicle sensor

I Sunload sensor
1 lntake air temperature sensor
lntake door actuator driver signal

*: Refer to "Component Parts Inspection".

Right after FRE switch or REC
switch operation

Approx. 0
Approx. 5

FULLY AUTOMATIC AIR CONDITIONER
Performance Test
PROCEDURE
Connect the manifold gauge to the vehicle side cooler cycle (service valve).
Attach a psychrometer to the recirculation air inlet port of the blower and cooling unit (below the glove box);
and attach a dry-bulb thermometer to the right side of the center ventilator grille.
Start and warm up the engine.
After warming up the engine, check that the engine speed has reached the standard idle speed.
After pressing the AUTO switch, operate the fan switch, mode switch (air outlet switch), REG switch, temperature adjustment dial and switch; and satisfy the following conditions.
Fan speed: 4th
Air inlet: Recirculation
Air outlet: Ventilator (VENT)
Temperature setting: 18°C
Completely open the hood and all door windows, and close all doors.
Maintain these conditions until the cooler cycle stabilizes. (Approx. 10 minutes)
Maintain the engine speed at idle.
Measure the recirculation inlet temperature and humidity, outlet temperature, and cooler cycle high- and
low-pressures. Compare and judge the values with the "AMBIENT AIR TEMPERATUREAND PRESSURE
CHARACTERISTICS and "INTAKE AIR TEMPERATURE AND DISCHARGEAIR TEMPERATURE CHARACTERISTICS.

FULLY AUTOMATIC AIR CONDITIONER
Performance Test (Cont'd)
INTAKE AIR TEMPERATURE AND DISCHARGE AIR TEMPERATURE CHARACTERISTICS

Intake air temperature -.

.AMBIENT AIR TEMPERATURE AND PRESSURE CHARACTERISTICS

Ambient temperature ---------t

HAK0660D

FULLY AUTOMATIC AIR CONDITIONER
Trouble Diagnosis by Gauge Pressure
Connect the manifold gauge to the cooler cycle (service valve). Speculate and correct the root cause and
trouble location based on the cooler cycle pressure.
Symptom

Both high- and low-pressures
are high.

High-pressure is too high.

Corrective action

Probable cause

Cycle status

Pressure retums to normal
when water is splashed on the
condenser.

When the compressor is
stopped, the pressure drops
suddenly approx. 2 kg/cm2.
Then, the pressure drops
gradually.

lnsufficient cooling by condenser
Radiator fan malfunction
lmproper air guard attachment
Clogged or dirty condenser
fins

Repair or replace faulty parts.
Clean or repair the condenser
fins.

Refrigerant over-charge

Recover all refrigerant. Revacuum and charge to appropriate amount.

Recover all refrigerant. ReAir is mixed in the cooler cycle. vacuum and charge to appropriate amount.

Temperature differences occurs Crushed or clogged high-presHigh-pressure is high, and lowwhere the high-pressure pipe is sure pipe between the compressure is too low.
pressor and condenser
crushed or clogged.

Repair or replace faulty part.

Clogged expansion valve
Gas leak at temperature senRemove foreign matter in
sor
Evaporator outlet is not cooled.
expansion valve, or replace.
Clogging due to foreign matter

Both high- and low-pressures
are low. (Sometimes the low
pressure is negative.)

There is a temperature difference at the liquid tank outlet
pipe, or liquid tank is covered
with frost.

Liquid tank malfunction
(clogged strainer)

Replace liquid tank.

Evaporator outlet pipe is covered with frost (no airflow).

lmproper attachment or failure
of intake air temperature sensor thermistor

Replace intake air temperature
sensor, or repair thermistor
attachment position.

There is some temperature diflnsufficient refrigerant
ference between compressor
high- and low-pressure pipes.

I Inspect for refrigerant leakage.
Recover all refrigerant. Revacuum and charge to appropriate amount.
Extract all refrigerant. Sufficiently vacuum and remove
moisture. Charge to appropriate amount. At this time,
replace the liquid tank without
fail.

Moisture is mixed in the cooler
cycle. (Clogging due to frozen
moisture in the expansion
valve)

Sometimes high-pressure is
low, and low-pressure is negative.

Sometimes, the evaporator outlet is not cooled. Sometimes,
the evaporative inlet is covered
with frost.

High-pressure is low, and lowpressure is high.

When the compressor is
stopped, the pressures equal- Compressor malfunction (compression defect)
ize. There is no temperature
Valve damage or failure
difference between the comFaulty gasket
pressor high-pressure pipe and
low-pressure pipe.

HA-I 0

I
Replace the compressor.

FULLY AUTOMATIC AIR CONDITIONER
Trouble Diagnosis by Self-diagnosis Function
There are 5 steps in the self-diagnosis: to check for any sensor failure, and to check that a given control signal is transmitted to each output device.

i
Diagnosis
content
-

-

Diagnostic
item

Step I

I

Step 2
-

-

-

-

Step 3

- ---

Each sensor check
Indicator lamp check

Each actuator check
and reset

check

display for each sen-

-

0

Display segments
Indicator lamp

Ambient sensor
In-vehicle sensor
lntake air temperature sensor
Sunload sensor

lntake door actuator
Air mix door actuator
Mode door actuator

lntake door actuator
Air mix door actuator
Mode door actuator
Blower fan motor
Compressor
Air purifier (only
when connected)

Ambient sensor
In-vehicle sensor
lntake air temperature sensor

SELF-DIAGNOSIS OPERATION PROCEDURE

R8

Switching to self-diagnosis mode
Turn the temperature adjustment dial all the way to the left.
Start the engine with the ignition switch from OFF position. Within 10 seconds, press and hold the OFF
switch for more than approx. 5 seconds, to start the self-diagnosis step 1.

Self-diagnosis completion
a

Turn the ignition switch OFF.
Turn the AUTO switch ON.

Switching between self-diagnosis steps
Use the temperature adjustment dial to switch between self-diagnosis steps 1 to 5.
a

Temperature adjustment dial (turn clockwise): Step 1-5
Temperature adjustment dial (turn counterclockwise): Step 5- 1
Refer to "SELF-DIAGNOSIS DISPLAY ITEM" for the diagnosis contents of each step.

EL

FULLY AUTOMATIC AIR CONDITIONER
Trouble Diagnosis by Self-diagnosis Function
(Cont'd)
IGN SW: OFF
AUTO SW: ON

Step 1

4

(CW) Turn the temperature
adjustment dial.

(CCW) Turn the temperature
adjustment dial.

I
IGN SW: OFF
AUTO SW: ON

Step 2

I
Step 3

*
+

AUTO SW: ON

(CW) Tum the temperature
adjustment dial.

I

(CCW) Turn the temperature
adjustment dial.

T

I

*

Step 4

I

AUTO SW: ON

I

*
CW: Clockwise

I

Step 5

Detected temperature d~splayfor each sensor

IGN SW: OFF
AUTO SW: ON

CCW: Counterclockwise

SELF-DIAGNOSIS DISPLAY ITEM
Step 1 - Display segments and indicator lamp check
Check the controller switch indicator lamp and display segments.
Normal: The switch indicator lamp and display segments are illuminated.
Abnormal: Malfunctioning area will not be illuminated.

C : Each switch indicator lamp
HAK0725D

Step 2 - Each sensor check

(T"e

")

last
digir
the display code

the corresponding codes

lllum~natedwhen a shortcircuit is detected.

Display shows " 2 in the step 2 mode, and then shows the judgement result.
Check the data of each sensor inputted into the automatic amplifier.
Normal: Display shows "20.
Abnormal: The last digit of the display code flashes for a malfunctioning sensor. At this time, if a short-circuit is detected,
"AUTO is displayed. Furthermore, when there are more
than one malfunctioning sensor, the corresponding display codes flash twice starting with the smaller code.
The sunload sensor will judge an abnormality when there is
insufficient lighting (less than 5,000 lx) such as while being
placed indoor or during the evening.

FULLY AUTOMATIC AIR CONDITIONER
Trouble Diagnosis by Self-diagnosis Function
(Cont'd)
Display code for malfunctioning sensor and identifying condition for automatic amplifier
Display code

Identifying condition for automatic amplifier

Sensor

Open circuit

Short-circuit

Ambient sensor

Less than 4 1.9"C

More than 100°C

22

in-vehicle sensor

Less than -41.g°C

More than 100°C

24

intake air temperature sensor

Less than -4 1.9"C

More than 100°C

25

Sunload sensor

Less than 4 1.8 W/m2 (36.0 kcallm2.h)

More than 1729 W/m2 (1487 kcal/m2.h)

21

Step 3
The last digit of

I

Abnormal flashes for
a malfunctioning
actuator terminal.

(

is detected.

I

When more than one
actuator terminal
are malfunctron~ng.
Ihe corresponding codes
flash twice starting
\ with the smaller code.

Flashes twice

HAK0727C

GI

EG

- Each actuator check and reset

Display shows "3" for approx. 1 second in the step 3 mode, and
then shows the judgement result.
Transmit an output signal to the intake door actuator, mode door
actuator, and air mix door actuator; and check each actuator.
Furthermore, the actuator can be reset by pressing the front DEF
switch at this time.
Normal: Display shows "30".
Abnormal: The display code flashes for a malfunctioning actuator.
At this time, if a short-circuit is detected, "AUTO is displayed. Furthermore, when there are more than one
malfunctioning sensor, the corresponding display codes
flash twice starting with the smaller code.
During reset: Display flashes "30"and front DEF switch. (Approx.
10 seconds)

Actuator display code
31.0 - 32.5

33.0 - 34.5

35.0 - 36.5

Actuator

Air mix door

Mode door

Intake door

Faulty harness display
Air mix door actuator

Mode door actuator

Intake door actuator

Terminal No. (actuator side)

1

2

5

6

1

2

5

6

1

2

5

6

Terminal No. (automatic
amplifier side)

15

16

17

18

22

30

29

23

24

32

31

36

31.0

31.5

32.0

32.5

33.0

33.5

34.0

34.5

35.0

35.5

36.0

36.5

Open or short-circuit failure
display

': "AUTO" is displayed for a short-circuit.

I28

P
EL
SD

Display code

Actuator

BB

FULLY AUTOMATIC AIR CONDITIONER
Trouble Diagnosis by Self-diagnosis Function
When '32.5" 1s d~splayedd ~ r l n gself-diagnos~sstep 3
I (Cont'd)
-

I

Au;omafc amplifier
Actuator driver
powe: supply
Air mix driver 1

I

1 1

1

Air mix door actuator

Air mix driver 2
Air mix driver 3
Air mix driver 4

When a open-circuit failure is displayed for all four terminals of
each actuator, there is a possibility of a disconnected
connector, or broken harness of the actuator driver power
SOUrce.
The self-diagnosis cannot detect short-circuit between actuator driver signals, but the actuators will vibrate when actuated.

II'

circuit

Step 4 - Each output device check
Display shows "41" in the step 4 mode. When the DEF switch is
As indicated in
pushed it switches from 42-343+44+45-+46-,41.
the following table, the automatic amplifier forcefully outputs to
each actuator, blower fan motor, and compressor in response to
the display code. Confirm and check each output operation status
by observing, listening to the operating sound, placing hand at the
air outlet, or using other methods.
The operation status of each actuator, blower fan motor, and
compressor cannot be confirmed on the display.

Display code for output device and status
Display code
Output device

/

11

I

1

1

42

Mode door

VENT

Intake door
Air mix door

I

43

I

I

B/L

BIL

Recirculation

Recirculation

Full cold

Full cold

Blower fan motor

35%

Compressor
Air purifier (only when connected)

FOOT

D/F

DEF

20% ambient

Ambient

Ambient

Ambient

Open 50%

Open 50%

Full hot

Full hot

75%

61%

610/e

61Yo

100%

ON

ON

ON

OFF

OFF

ON

ON

ON

ON

OFF

OFF

ON

The blower fan motor revolution is controlled by the duty ratio
signal outputted from the automatic amplifier. (For duty ratio,
refer to "Blower Fan Motor System Check" on page HA-15.)

Step 5

- Detected temperature display for each sensor

Display shows "5" in the step 5 mode. Every time the DEF switch
is pushed, the detected sensor temperature is displayed in 0.5"C
increments.
f

'

'

)-

the front DEF rwttch is pressed.

z
C

-X
t

In

-al

-

0

E

?

D

A1

7

Sensor display switches every tlme

-

<

-

-2

2

-

1

FULLY AUTOMATIC AIR CONDITIONER

Magnet Clutch System Check
MAGNET CLUTCH
Disconnect the compressor connector. Apply approx. 12V to the compressor to check the magnet clutch
operation.

AIR CONDITIONER RELAY
Remove the air conditioner relay. Apply approx. 12V between the air conditioner relay terminals No. 1 and
2. Check the relay operation sound.
Check the continuity between terminals No. 3 and 5.

/;sn

QJg

Ec
AT

REFRIGERANT CHARGE AMOUNT
Connect the manifold gauge to the vehicle side service valve.
Check that the lower pressure side (gauge pressure) is more than approx. 0.18 MPa (1.8 kg/cm2.G).

BR

ECM
Start the engine, and short-circuit the ECM terminal No. 14 to the ground. Check the magnet clutch operation.

INTAKE AIR TEMPERATURE SENSOR
Start the engine, and short-circuit the intake air temperature sensor terminal No. 1 to the ground. Check the
maanet clutch o~eration.

Rs

Blower Fan Motor System Check
BLOWER FAN MOTOR
Disconnect the blower fan motor connector. Short-circuit the blower fan motor terminals No. 2 and 5 to E!,l
the ground. Apply approx. 12V to the terminal No. 6, and check the motor operation.
Connect the blower fan motor connector. Turn the ignition switch to the ON position, and change the fan sD
switch from 1st to 4th. Check the blower fan motor terminal No. 5 with an oscilloscope. When the terminal No. 5 is normal according to the following table and the fan airflow does not change, this indicates a
faulty blower fan motor.
When the terminal No. 5 results differ from the following table and the fan airflow does not change, this
indicates either a faulty harness between the blower fan motor and automatic amplifier, or a faulty automatic amplifier.

(

FULLY AUTOMATIC AIR CONDITIONER
Blower Fan Motor System Check (Cont'd)
1 st speed

2nd speed

TI : Approx. 3.2 ms

T2: Approx. 2.2 ms

T3: Approx. 1.44 ms

Duty ratio: Approx. 20%

Duty ratio: Approx. 45%

Duty ratio: bprox. 64%

3rd speed

4th speed

Terminal No. 5
(oscilloscope)

Duty ratio

=

Approx. 4 ms-Tx
Approx. 4 ms

x

Duty ratio: Approx. 100%

100%

BLOWER FAN RELAY
Remove the blower fan relay. Apply approx. 12V to the blower fan relay terminals No. 1 and 2. Check the
relay operation sound.
Check the continuity between terminals No. 3 and 5.

Actuator System Check
DOOR ACTUATOR MOTOR
Disconnect every door actuator connector. Check the continuity between each door actuator terminals No. 3
and 1, 3 and 2, 3 and 5, and 3 and 6.

DOOR ACTUATOR HARNESS
Check the continuity between the automatic amplifier and every actuator.
Check that there is no short-circuit between actuator driver signals. (If there is a short-circuit, the actuators will vibrate during operation.)

FULLY AUTOMATIC AIR CONDITIONER

Trouble Diagnosis for Each Symptom
No airflow
Airflow does not change.

Check blower fan motor operation.
(Refer to "Blower Fan Motor System Check".)
The above is normal.

Probable cause

Malfunctioning unit

Operation check

Symptom

Blower fan motor

Faulty blower fan motor

I Automatic amolifier

1 Faultv automatic amplifier

Check attachment status of the air
mix door actuator.

Air mix door
I

Common item
(Check and confirm this
item along with the following three items.)

Abnormal display in self-diagnosis
step 3

Air mix door actuator

Faulty air mix door actuator
Faulty air mix door actuator system
hamess
(Refer to "Actuator System Check".)

Check that the air mix door operates when the temperature adjustment dial is set to 18OC or 32°C.

Air mix door actuator

Refer to "Actuator System Check".

Sensor

Faulty sensor (Refer to 'Component
Parts Inspection".)
Faulty sensor harness

Magnet clutch

Refer to 'Magnet Clutch System
Check".

Abnormal display in self-diagnosis
step 2
Magnet clutch does not operate
Temwith AUTO switch, or A/C switch.
perature
control No cool airflow
ngeranr cnarge amounr.
(Flow amount is normal.)
mal2 ~erformance.
function
The above is normal.
No warm airflow (Flow
amount is normal.)

( Cooler cycle

I

I Automatic amolifier

1 Faulty automatic amplifier

1

After warming up, the heater core
Coolant
inlet and outlet hoses are not warm.
The above is normal.

Automatic amplifier

Blower fan motor speed does not
change even when the fan switch is Blower fan motor
changed.
Large in-vehicle temperature difference in
relation to temperature
setting

Faulty attachment of air mix door
rod, or air mix door lever
Faulty air mix door system
(damage, lock, etc.)

When the fan switch is in 4th,
smoke is not drawn in from the invehicle sensor inlet.

Aspirator

Check the setting difference
between the set temperature and
control temperature.

I1

Refer to 'Performance Test".

Engine coolant failure
Clogged heater hose or heater core
Faulty automatic amplifier
Refer to "Blower Fan Motor System
Check".

I

Faulty aspirator
Clogged or disconnected aspirator
duct
Error in temperature difference setting

-

The above isnormal.-

Automatic amplifier

Faulty automatic amplifier

Mode door

Faulty attachment of mode door
lock, mode door link, or mode door
lever
Faulty mode door system (damage,
lock, etc.)

Abnormal display in self-diagnosis
step 3

Mode door actuator

Faulty mode door actuator
Faulty mode door actuator system
harness (Refer to "Actuator System
Check".)

Normal display in self-diagnosis
step 3

Mode door actuator

Refer to "DOOR ACTUATOR
HARNESS", "Actuator System
Check".

Check mode door operation.

Air outlet does not switch.

The above is normal.
-

-

IAutomatic amplifier
I
lntake door

Check intake door operation.

Air inlet does fiot switch.

Abnormal display in self-diagnosis
step 3

door

Normal display in self-diagnosis
step 3

lntake door actuator
I

The above is normal.

I Automatic amplifier

I Faulty automatic amplifier

I Faulty attachment of intake door
lever
Faulty intake door system (damage,
lock, etc.)
~ a u l Gintake door actuator
Faulty intake door actuator system
hamess (Refer to "Actuator System
Check".)
Refer to "DOOR ACTUATOR
HARNESS", "Actuator System
Check".
I

I Faulty automatic amplifier

ElG

AT
BW

@
a

R8

I
I

FULLY AUTOMATIC AIR CONDITIONER
ln-vehcle sensor characterlstlc and connector

I

Component Parts Inspection
IN-VEHICLE SENSOR
Disconnect the in-vehicle sensor connector. Check the resistance
between the sensor connector terminals No. 1 and 2.

Temperature

"C

HAK0669D

AMBIENT SENSOR

Ambient sensor characteristic and connector

Disconnect ambient sensor connector. Check the resistance
between the sensor connector terminals No. 1 and 2.

Temperature

I

I

"C

ELZ0174C

SUNLOAD SENSOR

Sunload sensor characteristic and connector

Sunload kW/m2 (kcaVm2h)

HAK0666C

cake alr temperature sensor characlerlstrc and connector

Disconnect the sunload sensor connector.
Turn the ignition switch ON.
Check that the voltage between the automatic amplifier connector (vehicle side) terminal No. 34 and body ground, is
approx. 4.6V.
When normal, proceed to step 5.
When abnormal, the automatic amplifier is faulty. Or, the harness between the automatic amplifier and sunload sensor is
faulty.
Turn the ignition switch OFF.
Connect the sunload sensor connector.
Turn the ignition switch ON.
Check the voltage between the automatic amplifier connector
(vehicle side) terminal No. 34 and body ground.
When indoors, check the voltage by applying a light of approx.
60W. (Check the voltage with the light placed close to and
away from the sensor.)
The sunload during a sunny day is equivalent to approx. 767
W/m2 (660 kcal/m2-h).

INTAKE AIR TEMPERATURE SENSOR
Disconnect the intake air temperature sensor connector. Check the
resistance between the sensor connector terminals No. 1 and 2.

THERMAL TRANSMITER
Refer to EL section ("Component Parts Inspection", "COMBINATION METER").

Temperature

'C

~ ~ ~ 0 6 6 7 ~ 1

HA-I 8

ELECTRICAL SYSTEM

SECTION

EL

CONTENTS
CENTRAL DOOR LOCK SYSTEM .................................2
Component Parts Location..........................................2
Circuit Diagram............................................................2
Combination Meter (meter control unit) Input/
Output Signal Specifications........................................2
Inspection before Trouble Diagnoses.........................-3
Trouble Diagnoses....................................................... 3
REMOTE CONTROL ENTRY SYSTEM ..........................4
Component Parts Location..........................................4
Circuit Diagram............................................................ 4
Remote Control Entry Control Unit Input/Output
Signal Specifications.................................................... 5
System Check.............................................................-5
Inspection before Trouble Diagnoses..........................6
Trouble Diagnoses.......................................................6
Component Parts inspection ....................................... 6
ID Code Entry Procedure ............................................ 7
POWER WINDOW SYSTEM ........................................... 8
System Description..................................................... -8
Precautions................................................................. -8
Component Parts Location..........................................8
Circuit Diagram............................................................ 9
Power Window Main Switch Input/Output Signal
Specifications...............................................................9
Inspection before Trouble Diagnoses........................ 11
Trouble Diagnoses.................................................... 11
SUNROOF SYSTEM...................................................... 12
Component Parts Location........................................ 12
Circuit Diagram ..........................................................12
Sunroof Switch and Sunroof Motor Assembly
lnputiOutput Signal Specifications.............................12
AUTO LIGHT SYSTEM ................................................. 1 3
Component Parts Location ........................................ 13
Auto Light Control Unit Input/Output Signal
Specifications............................................................. 13
Circuit Diagram ........................................................
14
Trouble Diagnoses.................................................. I 4

XENON HEADLAMP SYSTEM .....................................15
Trouble Diagnoses.....................................................15
IGNITION KEY-OPERATED ILLUMINATION
SYSTEM...................................................................7
Component Parts Location ........................................17
Circuit Diagram .......................................................... 17
Meter Control Unit InputlOutput Signal
Specifications .......................................................1
7
METER ........................................................................ 18
Cornbination Meter .................................................... 18
Triple Meter................................................................ 20
COMBINATION METER ................................................21
System Description....................................................21
Component Parts Location ........................................ 21
Diagnosis Function ....................................................21
Meter-related Circuit Diagram ................................... 22
Trouble Diagnoses..................................................... 23
Combination Meter InpuVOutput Signal
Specifications............................................................ -25
Component Parts Inspection .....................................26
TRIPLE METER .............................................................29
Special Service Tool ...................................................29
Component Parts Location ........................................ 29
Circuit Diagram .......................................................... 29
Triple Meter InputfOutput Signal Specifications........30
Component Parts Inspection .....................................30
IGNITION KEY WARNING BUZZER AND LIGHT
WARNING BUZZER ......................................................31
Component Parts Location ........................................31
Circuit Diagram .......................................................... 31
Meter Control Unit InpuVOutput Signal
Specifications............................................................. 31
FRONT WIPER ..............................................................32
Component Parts Location ........................................ 32
Circuit Diagram ..........................................................32
Front Wiper Input/Output Signal Specifications ........32

CONTENTS ( c m 9 d )
REAR WIPER ................................................................33
Component Parts Location ........................................33
Circuit Diagram .......................................................... 33
Rear Wiper Amplifier Input/Output Signal
Specifications ............................................................ .33
REAR DEFOGGER AND HEATER MIRROR ...............34
Component Parts Location ...................................... ..34
Circuit Diagram..........................................................34

Meter Control Unit InpuVOutput Signal
Specifications............................................................ -34
WIPER DEICER ............................................................. 35
Component Parts Location ....................................... .35
Circuit Diagram..........................................................35
Wiper Deicer Switch InpuVOutput Signal
Specifications.............................................................35

@I
EG

CENTRAL DOOR LOCK SYSTEM

Component Parts Location

Circuit Diagram
Door lock relay

LOCK

-

----I

Door lock relay
connector

TK20
(Brown)

1

I I

1 11el

LOCK

1

actuator

I

I
door I

Remote control entry
C/U connector

Rear LH
lock actuator

I

I

1

I,,,,,,,------J

Driver door lock
actuator SW

Lock signal
Unlock sign311

18.

Combination meter
(Meter C/U) connector

1

I
I

Driver door lock
SW signal

1

5\41

j

. RH door1

5

T

1

I
PMI main SW
(Central door lock SW)

P/'W main SW connector
(2-door Coupe)

1

PNV main SW connector
(4-door Sedan)

OCC3324C

Combination Meter (meter control unit) Input/
Output Signal
Specifications
4

1

Driver door lock switch signal

Specification

Operation or condition

Signal name

Terminal No.

I

Unlocked (ON1
. .

I

Approx. OV

Locked (OFF)

Approx. 5V

Unlocked (ON)

Approx. OV

Operation other than above (OFF)

Approx. 5V

Locked (ON)

Approx. OV

Operation other than above (OFF)

Approx. 5V

-

Approx. OV

5

Central door lock switch unlock signal

18

Central door lock switch lock signal

55

Ground

56

Passenger and rear RH 8 LH door lock
actuator lock signal

Central door lock switch is locked.

Changes from approx. 12 to OV and back
to approx. 12V.

60

Passenger and rear RH & LH door lock
actuator unlock siqnal

Central door lock switch is unlocked.

Changes from approx. 12 to OV and back
to approx. 12V.

CENTRAL DOOR LOCK SYSTEM

Inspection before Trouble Diagnoses
Check that components connectors are properly connected.

Trouble Diagnoses
SYMPTOM CHART
Symptom

Malfunctioning item

Possible cause

Power window main switch circuit

Faulty power window main switch (central door lock switch)
Faulty power window main switch (central door lock switch) to
combination meter (meter control unit) harness
Faulty power window main switch (central door lock switch) ground
circuit

Door lock relay circuit

Faulty door lock relay
Faulty door lock relay to combination meter (meter control unit)
harness
Faulty door lock relay to door lock actuator harness

0

Passenger door lock and rear RH & LH
door locks do not lock or unlock with the
central door lock switch.

I
Combination meter
(meter control unit)
Passenger door lock, rear RH door lock,
or rear LH dooc lock do not lock or unlock Door lock actuator circuit
with the central door lock switch.

0

Faulty combination meter (meter control unit)

0

Faulty door lock actuator
Faulty door lock actuator to door lock relay harness

.
0

Passenger door lock and rear RH & LH
Driver door lock switch circuit
door locks do not lock or unlock with the
driver door lock knob. (They operate
properly with the central door lock switch.) Combination meter
(meter control unit)

Faulty driver door lock switch
Faulty driver door lock switch to combination meter (meter control
unit) harness
Faulty driver door lock switch ground circuit
Faulty combination meter (meter control unit)

E8G

BR

ST

m

REMOTE CONTROL ENTRY SYSTEM

1

Component Parts Location

Circuit Diagram
Unlock signal

Key-in detection SW

Remote control entry
C/U connector

I
-

REMOTE CONTROL ENTRY SYSTEM

Remote Control Entry Control Unit
InputIOutput Signal specifications
Terminal No.

Signal name
Driver door switch input signal .

All door switch input signal

Driver door lock actuator lock
output signal

Operation or cond~t~on

Specificatton

Close the driver door. (OFF)

Approx. 12V

Open the driver door. (ON)

Approx. OV

Close all the doors. (OFF)

Approx. 12V

Open one of the doors. (ON)

Approx. OV

Lock with the remote control.
t

Ground
Driver door lock switch signal
Key-in detection switch input
signal
ACC power supply

Ec

Changes from approx. 0 to
12V and back to approx. OV.

-

Approx. OV

Locked (OFF)

Approx. 5V

Unlocked (ON)

Approx. OV
Insert (ON)
Remove (OFF)

Ignition key

@

BR

8
7

Approx. 12V
Approx. OV

Rs

Ignition switch to ACC

Approx. 12V

Passenger door and rear RH &
LH door lock output signal

Press the lock switch on the remote control.

Changes from approx. 5 to OV
and back to approx. 5V.

Passenger door and rear RH &
LH door unlock output signal

Press the unlock switch on the remote control.

Changes from approx. 5 to OV
and back to approx. 5V.

Unlock with the remote control.

Changes from approx. 0 to
12V and back to approx. OV.

Driver door lock actuator
unlock output signal

System Check
Works properly.
Program the remote control (A) to another vehicle of the
Does not work.
same type and check if the remote control works properly.
Easy way to confirm the u
fnc+oin

of the remote control:

Turn a radio ON. Touch the radio aerial with the remote
control (A). Press a switch on the remote control with
the remote control on the aerial. Listen for noise.
(Radio frequency: around 78.6,78.7,78.8MHz)

f

is OK.

is heard.

.

I

No noise is heard.

Remote control (A)
is NG.

B

'
Works properly.
Program another remote control (6)
to the vehicle
concerned and check if the remote control works properly. Does not work.

t

The vehicle is OK.

r The vehicle is NG. 0CC3078D

I

Operation check
System check A

System check B

Check item

I

Remote control (A) is OK.

The vehicle is OK.

Program the remote control (A) to the vehicle concerned again and check
for proper operation.

Remote control (A) is OK.

The vehicle is NG.

Perform trouble diagnosis to determine what causes the problem.

Remote control (A) is NG.

The vehicle is OK.

Check the remote control (A) battery voltage.

Remote control (A) is NG.

The vehicle is NG.

Check the remote control (A) battery voltage and then perform trouble diagnosis to determine what causes the problem.

HA

REMOTE CONTROL ENTRY SYSTEM
lnspection before Trouble Diagnoses
Check system.
Check that other systems that use the following signals work
properly.
Check that component connectors are connected properly.

Trouble Diagnoses
SYMPTOM CHART
Symptom

None of the doors lock with the remote
control switch.

None of the doors unlock with the
remote control switch.

Door locks other than the driver door do
not operate with the remote control
switches.

Only the driver door lock does not operate with the remote control switch.

Possible cause

Malfunctioning item
Door switch circuit

Faulty door switch to remote control entry control unit
harness

Key-in detection switch circuit

Faulty key-in detection switch to remote control entry control
unit harness

Remote control entry control unit

Faulty remote control entry control unit

Key-in detection switch circuit

Faulty key-in detection switch to remote control entry control
unit harness

Remote control entry control unit

Faulty remote control entry control unit

Central door lock system circuit

Refer to "CENTRAL DOOR LOCK SYSTEM",EL-2.
Faulty combination meter (meter control unit) to remote
control entry control unit harness

Remote control entry control unit

Faulty remote control entry control unit

Driver door lock actuator circuit

Faulty driver door lock actuator
Faulty driver door lock actuator to remote control entry
control unit harness

Remote control entry control unit

Faulty remote control entry control unit

Component Parts lnspection
BATERY CHECK

-

Specification: Approx. 2.5 3.OV
CAUTION:
Connect resistance (300Q) so that the current is approx. 10
mA before checking ihe battery.
Use lithium photo battery (CRI 620 or equivalent) for replacement.

REMOTE CONTROL ENTRY SYSTEM

ID Code Entry Procedure
Enter the identity (ID) code manually when:
remote controller or control unit is replaced.
an additional remote controller i s activated.
To enter the ID code, follow the procedures below.

PROCEDURE

I

I

Close all doors and lock driveis side door.

Insert and remove the key from the ignition more than six times within 10 seconds.
(Power door lock will then unlock.)

Within 3 seconds after door lock is unlocked, turn ignition key switch to "ACCnposition and lock the driver's side door.
At this time, the original ID codes are erased.

Push any button on the new remote controller once. (Power door lock will then
unlock.)
At this time, the new ID code is entered.

e

Do you want to enter any additional remote controller ID codes?
A maximum four ID codes may be entered. Any attempt to enter more will be
ignored.
No

Yes

Lock driver's side door.

I

Open driver's side door or turn the ignition key switch to 'OFF position.

I

END.
After entering the identity (ID) code, check the operation of remote control
entry system.

NOTE
If you need to activate more than two additional new remote controllers, repeat the procedure
"Additional ID code entry" for each new remote controller.
If the same ID code that exists in the memory is input, the entry will be ignored.
Entry of maximum four ID codes is allowed and any attempt to enter more will be ignored.

POWER WINDOW SYSTEM
System Description
When the ignition switch is turned OFF, timer function allows
the driver door power window to operate for up to approximately 15 minutes. Opening (door switch ON) and closing
(door switch OFF) the driver door or entering the ignition switch
OFF to ON signal will reset the timer.
If the driver door window is obstructed when it is going up, the
window moves down approximately 150 mm.

OPERATING CONDITIONS
a
a

The driver door window is between fully-open position and
almost fully-closed position (with the limit switch ON).
Automatic operation when the ignition switch is turned ON
Automatic or manual operation when the ignition switch is
turned to any position other than ON (with the timer active)

Precautions
When the driver door window is between fully-open position
and almost fully-closed position with the limit switch ON,
removing or installing the battery or the power window main
switch will deactivate the auto UP mode and the timer function.
If the step above has been taken, operate the power window
switch to close the driver door glass fully. This activates the
auto UP mode and the timer function.

Component Parts Location

Driver door power window motor (limit switch and encoder built-in)

\

) Dash panel, driver side

(amplifier built-in)

OCC3269D

POWER WINDOW SYSTEM
Circuit Diagram

PiW SW power supply

I
.20(14)

Lmt

sw sgnai

")'

Encoder power supply
'8112
' Encoder pulse signal

I

It>.

(4-door Sedan)

W

W

~~~.

DOWN signal
UP signal
(

)' 2-door
Coupe
16

9(11)

-r

2

Dz

6 door P/W

DOWN signal
UP signal

13

PMI maln SW connector
@-door Sedan)

Driver door
PMI motor

Driver door PNV mot01

v

DOWN signal
UP signal

17

Drrver
I - - - - - - - - - - - - - J

I-

-

$

891011

4-door Sedan only

141516

Passenger door and
rear RH & LH door
PiW SW connector

PiW main SW connector
(2-door Coupe)

OCC3265D

1

Power Window Main Switch Input/Output
Signal Specifications

-

Measurir

Terminal No.

condition

Signal name

Specification
Ignition switch

Limit switch and encoder
ground

Operation or condition

ON or another position
(Timer is in operation.)

Approx. OV
Approx. 2V

Encoder pulse signal

Lim~tswitch signal

Driver door power window
motor DOWN signal
Battery

(

): 2-door Coupe

ON or another position
(Timer is in operation.)

ON or another position
(Timer is in operation.)

ON or another position
(Timer is in operation.)

Power window motor is in
operation.

Driver door window is
between fully-open position
and almost fully-closed
posit~on.(ON)

Approx. OV

Driver door window is
between almost fully-closed
position and fully-closed
position. (OFF)

Approx. 5V

DOWN operation

Approx. 12V

Other than DOWN operation

Approx. OV
Approx. 12V

POWER WINDOW SYSTEM
Power Window Main Switch Input/Output
Signal Specifications (Cont'd) Measuring condition

Signal name

Terminal No.

Ignition switch
Driver door switch signal

-

Specification

Operation or condition

-Driver door is opened. (ON)

Approx. OV

Driver door is closed. (OFF)

Approx. 12V

Ground

Approx. OV

Driver door power window
motor UP signal

ON or another position
(Timer is in operation.)

Encoder power supply

ON or another position
(Tmer is in operation.)

Rear RH door power window
DOWN signal

Ignition power supply

Passenger door power window DOWN signal

ON

UP operation

Approx. 12V
--

-

-

Other than UP operation

Appro~.OV

-

Approx. 5V

The rear RH window DOWN
switch in the main switch is
operated.

Approx. 12V

Operation other than above

Approx. OV

-

Approx. 12V

The passenger door DOWN
switch in the main switch is
operated.

Approx. 12V

Operation other than above

Approx. OV
--

Rear RH door power window
UP signal

Rear LH door power window
DOWN signal

Rear LH door power window
UP signal

The rear RH window UP
switch in the main switch is
operated.

Appro~.12V

Operation other than above

Approx. OV

The rear LH window DOWN
switch in the main switch is
operated.

Approx. 12V

Operation other than above

Approx. OV

The rear LH window UP
switch in the main switch is
operated.

Approx. 12V

Operation other than above

Approx. OV

The passenger door UP
switch in the main switch is
operated.

Approx. 12V

Operation other than above

Approx. OV

--

Passenger door power win3ow UP signal

-

-

Power supply to the passenjer door and rear RH 8 LH
joor power window switch

-

I

Approx. 12V

-

POWER WINDOW SYSTEM

Inspection before Trouble Diagnoses
Check that other systems that use the following signals work
properly.
Check that component connectors are connected properly.

Trouble Diagnoses

@

SYMPTOM CHART
Possible cause
Faulty driver door switch to power window main switch harness

Timer function is not deactivated, with the
operation conditions met, when the driver
door switch is turned ON and OFF.
switch

Limit switch circuit
The driver door glass is not reversed
when it was obstructed.

AT

Faulty power window main switch

0

Faulty driver door power window motor (Limit switch is poorly adjusted.)
Faulty driver door power window motor (limit switch)
Faulty driver door power window motor (limit switch) to power window main
switch harness

BR

87'

Faulty power window main ~ M t c h
0

Limit switch circuit

The driver door glass is reversed when it
goes up and comes near the fullyclosed
position in the auto UP mode.

Faulty driver door power window motor (Limit switch is poorly adjusted.)
Faulty driver door power window motor (limit switch)
Faulty driver door power window motor (limit switch) to power window main
switch harness
Faulty power window main switch

Encoder circuit

Faulty driver door power window motor (encoder)
Faulty driver door power window motor (encoder) to power window main
switch harness

Power window main
switch

Faulty power window main switch

I
The driver door glass is reversed as soon
as it starts to go up in the auto UP mode.

I Door glass slide condition

Power window main
The driver door glass is reversed at the
position other than above when it is going
up in the auto UP mode.
Door glass slide condition

I

Foreign objects on the glass, glass run channel rubber (4-door Sedan) or
weatherstrip (2-door Coupe)
Abrasion or deformation of glass run channel rubber (4-door Sedan) or
weatherstrip (2-door Coupe)
Sash is not angled inboard or outboard properly (4-door Sedan) or glass is
not angled inboard or outboard properly (2-door Coupe)
Faulty power window main switch
Foreign objects on the glass, glass run channel rubber (4-door Sedan), or
weatherstrip (2-door Coupe)
Abrasion or deformation of glass run channel rubber (4-door Sedan) or
weatherstrip (2-door Coupe)
Sash is not angled inboard or outboard properly (4-door Sedan) or glass is
not angled inboard or outboard properly (2-door Coupe)

R8

HA

I

1

Sunroof motor assembly

I

Sunroof switch

<

Component Parts Location

OCEM57DI

Circuit Diagram
CIB

PMl relay

Sunroof motor assembly
(Fully-closed position)
Sunroof SW
I
I

-1

Limit SW 2

I

Slide SW
i

CLOSE

I

5--1

3
5

-- LL

1

1

-I

--

CLOSE relay

I

1

~irnitsw~

Sunroof Switch and Sunroof Motor Assembly
InputlOutput Signal
Specifications
Measuring condition
Terminal No.

I

-

I

Operation

Ignition switch

'lased

'Pen Position
~
closed
~
l position
l
~
to fully closed
to fully open position
position

Fully closed position
to tilt UP position

Tilt UP position to
fully closed position

Approx. OV
(Motor is running.)

Approx. 12V

1

ON

Approx. 12V

OV

OV

2

ON

OV

OV

OV

3

ON

Approx. 2V

Approx. OV
(Motor is running.)

Approx. 12V

ov

ov

4

ON

OV

Approx. 2V

Approx. OV
(Motor is running.)

OV

OV

5

ON

Approx. OV

Approx. OV

Approx. OV

Approx. OV

Approx. OV

12'

Approx. OV
(Motor is running.)

AUTO LIGHT SYSTEM

Component Parts Location

Inside the meter

-4

Auto light control unit

Auto Light Control Unit InputlOutput Signal
Specifications
Measuring condition
Terminal No.

Specification

Signal name
Ignition switch

Operation or condition
I

I

Light is applied to the
liaht sensor.

Tail lamp relay control
signal

Lighting switch: AUTO

Vehicle speed signal
(2 pulses)

Speedometer is in operation. (Vehicle speed is
approximately 40 kmlh.)

4

Light is not applied to
the light sensor.

Light is applied to the
liaht sensor.

Navigation screen
dimming signal

Liahtina switch: 1ST

I
I

ignition power supply

-

I-

Light is applied to the
liaht sensor.

Headlamp relay control signal

Lighting switch: AUTO

ACC

I
I

Approx. 12V
Approx. 12V

I

ACC

ACC power supply

ACC

Approx. 12V

Light is not applied to
the light sensor.

Approx. OV

OFF

Approx. 12V

AUTO

Approx. OV

-

Driver door switch signal

Approx. OV

I

Lighting switch

Ground

Approx. 12V
Approx. OV

Light is not applied to
the light sensor.

I

Lighting switch AUTO
signal

I

Approx. OV

ON (Open)

Approx. OV

OFF (Closed)

Approx. 12V

Driver door switch

-

I

Approx. 12V

AUTO LIGHT SYSTEM
Circuit Diagram
Xenon
headlamp
relay

To clearance
lamp and
tail lamp

-----: High-voltage parts
I----

I

EL-2163D

Trouble Diagnoses
SYMPTOM CHART
Symptom

I
Possible cause
I a Faulty auto light control unit power supply or ground harnesi
Faulty lighting switch
Faulty lighting switch to auto light control unit harness
a Faulty lighting switch ground harness
Faulty auto light control unit
0

When outside is dark, neither small lamps nor headlamps tum ON by
auto light operation. [Lighting switch (1ST and 2ND) is normal.]

I
When outside is dark, small lamps turn ON but headlamps do not turn
ON by auto light operation. [Lighting switch (1 ST and 2ND) is normal.]

Faulty lighting switch to auto light control unit harness
Faulty auto light control unit

When outside is dark, headlamps turn ON but small lamps do not turn
ON by auto light operation. [Lighting switch (1ST and 2ND) is normal.]

Faulty lighting switch to auto light control unit hamess
Faulty auto light control unit
~~- -

a Neither headlamps nor small lamps turn OFF when the driver door is

opened with the ignition switch at ACC.
a Headlamps and small lamps turn OFF when the ignition switch is

turned to ACC with the driver door closed.
0

0

While the vehicle is driven at night, headlamps go off momentarily
when it passes under street lamps.
While the vehicle is driven in the early morning or evening, headlamps
turn ON momentarily when it passes under an overpass or through
building shadows.
During the day, neither small lamps nor headlamps turn OFF.
During the day, headlamps tum OFF but small lamps do not turn OFF.

-

p
p

0

Faulty
Faulty
Faulty
Faulty

a

Faulty speedometer to auto light control unit harness

a
a
a

door switch
door switch to auto light control unit harness
door switch ground harness
auto light control unit

a Faulty auto light control unit

a Faulty auto light control unit

XENON HEADLAMP SYSTEM

Trouble Diagnoses
DESCRIPTION
Problems with xenon headlamps are as follows:
They do not light up.
They blink.
They are not bright enough.
In most cases the problems above are caused by faulty xenon bulbs.
There might be the possibility that the problems are caused by faulty HID control unit or lamp sockets.
Follow the diagnostic procedure to determine what causes the problem.

Connect or disconnect connectors with the lighting switch OFF.
Do not touch harnesses, HID control unit, internal lamp, or metal part of the lamp while the lamps are ON
(Lighting switch is ON).
Before verifying that the lamps are ON, install the parts to the vehicle temporarily and connect the battery
cable with the connector on the vehicle.
If the electrical system is suspected to be the cause of the symptom, check for blown fuse or fusible link,
broken connectors, disconnected terminals, or faulty engagement.
Do not use wet hands when performing the trouble diagnoses.

CIRCUIT DIAGRAM

To clearance
lamp and
tail lamp

JJ$Rkj
Driver door SM

Headlamp
: High-voltage

B2

ST
F@

, MA

Xenon
headlamp
relay

-- - - 1

ec
AT

PRECAUTIONS

1

GD

parts

CAUTION:
0
Do not use a tester to diagnose the HID control unit circuit.
0
Do not disassemble the HID control unit and harnesses (bulb socket harness and control unit harness).
0
Immediately after the headlamps turn ON, brightness and emission color vary. This is a normal
condition.
When a bulb has reached the end of its life, the brightness becomes extremely low, the bulb continues to blink, or the light looks reddish.

XENON HEADLAMP SYSTEM
Trouble Diagnoses (Cont'd)
DIAGNOSTIC PROCEDURE

I
I

FUSE, FUSIBLE LINK, AND XENON

Fuse, fusible link, or xenon
headlamp relay is faulty.

HEADLAMP RELAY CHECK

CONNECTOR CHECK ON THE VEHICLE
FOR BATTERY VOLTAGE
With lighting switch ON, check HID control
unit connector on the vehicle for battery
voltage.

Harness on the vehicle is
faulty.

I

OK

I

XENON HEADLAMP BULB REPLACEMENT
Replace the xenon headiamp bulb with a
known good bulb and check for proper
operation.

Xenon bulb is faulty.

HID CONTROL UNIT REPLACEMENT
Install a known good HID control unit to
the xenon headlarnp and check for proper
operation.

HID control unit is faulty.

NG
-

XENON HEADLAMP HOUSING ASSEMBLY REPLACEMENT
Install a known good xenon headlamp
housing assembly to the xenon headlamp
and check for proper operation.

OK,

-

-

Starter in xenon headlamp
housing (boost circuit) is
faulty.
(Xenon headlamp housing
assembly is faulty.)

IGNITION KEY-OPERATED ILLUMINATION SYSTEM
Component Parts Location

Behind combination meter

Meter control unit

Circuit Diagram
7 ,

&

..

Driver door lock detection switch

T

r

2

1

326
'

3

-

a

Passenger door SW Rear RH door SW
Rear LH door SW

Room lamp

IGN SW illumination

TK24 (Brown)

TK20 (Brown)

TK20 (White)
EL-2178D

1

Meter Control Unit Input/Output Signal
Specifications
I

I

Measuring condition
Terminal No.

I

J

Signal name

Ignition
switch

Driver door switch
signal

OFF

Driver door lock signal

OFF

Battery

OFF

Door switch signal

OFF

Ignition power supply

ON

Key-in detection
switch signal

OFF

Ground

ON

Room lamp, ignition
switch illumination
signal

OFF

-

Specification

Operation or condition

Approx. OV

ON (Open)
OFF (Closed)

Driver door switch

Approx. 12V
Approx. OV

Door is unlocked. (Switch ON)

Approx. 5V

Door is locked. (Switch OFF)

-

Approx. 12V
Approx. OV
Approx. 12V

Open a door. (ON)
Close all the doors. (OFF)

-

Approx. 12V

Remove the ignition key.

Approx. OV
Approx. 12V

Insert the ignition key.

Room lamp switch:

Insert the ignition key. Each door switch

Neutral position
lamp switch:
Neutral position

Approx. OV

Close all the doors.

ON (Open)

Approx. OV

OFF
(Closed)

Approx. 12V

Remove the ignition key from the
key cylinder.
Turn the ignition switch ON.

Approx. OV'
Approx. 12V

METER
Combination Meter
REMOVAL AND INSTALLATION
Parts included in this procedure:
Column cover
Cluster lid A
Combination switch

-

DISASSEMBLY AND ASSEMBLY
s EC, 248

Behind combination mete!

Tachometer and oil pressure gauge anaching screw (7)

I

cover

-

..

Water tem~eraturecauae
attaching screw (3)
. .

I

"GI

yauyc

speedornet&
anaching screw (4)

lit

C :Meter control unit attaching screw (9)
position indicator
ater temperature gauge
Tachometer and oil pressure gauge

Upper housing

FLEXIBLE PRINT CIRCUIT (M-AT)
I

I

Tachometer

Illumination bulb
I

Flexible print circuit

7 r,-

Behind meter
control unit

I

Connector connecting
check terminal

I

Removal
1.
2.

Pull out the connector while pinching its both ends.
Pull flexible print circuit out of the connector.

I

METER
Combination Meter (Cont'd)
Installation
Push the flexible print circuit into the connector and press it
down with the connector.
2. Verify that the flexible print circuit is securely connected with
the connector.
3. Check that there is continuity between the connector connecting check terminals.
1.

BEHIND COMBINATION METER AND INTERNAL
CIRCUIT

2
x

z g 2
Bulb color:

G: Green
L: Blue

1

27

(Ground)

51

Ground)

1

51

(Ground)

R: Red
Y: Yellow
15 55

(Ground)

13

zI

(Ground!

51

(Ground)

27

(Ground)

METER
Triple Meter
REMOVAL AND INSTALLATION

bScrew (2)
DISASSEMBLY AND ASSEMBLY

s EC. 248 Behind triple meter

(373

C

: Triple meter attaching screw ( 5 )

t

Front

meter

c : Front cover attaching screw (6)

COMBINATION METER

System Description
Speedometer, tachometer, odoltrip meter, fuel gauge, and
water temperature gauge are integrally controlled by the control circuit in the meter control unit.
Diagnosis function has odoltrip meter segment check, low fuel @
warning lamp check, and continuity check in the meter control
circuit and the meters (speedometer, tachometer, fuel gauge,
and water temperature gauge).

Component Parts Location
Combination meter

IDTransfer (4WD)

I

unit

H side of trunk room

I

/I

ABS

-unit

connector

I

Diagnosis Function
/

SEGMENT CHECK AND LOW FUEL WARNING LAMP
CHECK
meter is displayed, turn the ignition switch ACC or

3.
4.
5.

down the odoltrip meter switch, turn the ignition switch
ON.
Verify that 0000.0 km is displayed on the trip meter.
Press the odoltrip meter switch 3 times within 5 seconds.
All the odoltrip meter segments light up along with low fuel
warning lamp.

EL-21

COMBINATION METER
Diagnosis Function (Cont'd)
METER CIRCUIT CHECK
After the segment check, press the odohrip meter switch to
verify that meters operate as shown below. (Low fuel warning
lamp goes off at this point.)

i

ELF0967D
I

It takes 1 minute for the meters to become stable.

DIAGNOSIS FUNCTION CANCELLATION
Turn the ignition switch ACC or OFF.

Meter-related Circuit Diagram

I

I TO oil pressure W.L

COMBINATION METER
Trouble Diagnoses
DIAGNOSTIC PROCEDURE
DOwarning lamps on the
meter light up?

. No

I YES

.

Meter battery or ignition power supply is faulty.

Meter control unit is faulty.

t

NO

Does the liquid crystal display operate properly at the segment check?

Meter control unit is faulty.

YES
The bulb is faulty.

at the low fuel warning lamp check?

I

Meter control unit is faulty.

Check the attaching screw for the
meter that does not operate properly.

the meter circuit check?

'

NG **F3epair malfunct~oningpart and
conduct the meter circuit check again.

OK

4
Go to "DIAGNOSIS RESULT 2".

Go to "DIAGNOSIS RESULT 1".

1 1: 1

DIAGNOSIS RESULT 1
Symptom

I

Check item

Low fuel warning lamp does not operate
properly.
Any of tachometer, fuel gauge, and water
temperature gauge does not operate properly.

~

Sensor circuit for the meter (warning lamp)

1 that does not operate properly

I

Sensor or harness for the meter that does
not operate properiy

Meter control unit

More than one meter out of tachometer, fuel
gauge, and water temperature gauge do not
operate properly.

Speedometer and odohrip meter do not
operate properly.

Malfunctioning item

Meter control unit

Vehicle speed input signal (with TCS)

NG

Vehicle speed sensor or harness

OK

Meter control unit

-

Perform "VEHICLE SPEED INPUT SIGNAL DIAGNOSIS" on the next page. (without TCS)

DIAGNOSIS RESULT 2
Symptom

I

Check item

Malfunctioning item
-

Any of speedometer, tachometer, fuel gauge,
and water temperature gauge does not oper- Resistance of the meter that does not
operate properly
ate properly.
More than one meter out of speedometer,
tachometer, fuel gauge, and water temperature gauge do not operate properly.

-

NG

Meter that does not operate properly

OK

Meter control unit
Meter control unit

COMBINATION METER
Trouble Diagnoses (Cont'd)
VEHICLE SPEED INPUT SIGNAL DIAGNOSIS
WARNING LAMP CHECK

Perform ABS self-diagnosis
and check faulty circuit.
Refer to BR section ("ABS
SYSTEMn).

Does ABS warning lamp remain ON with
ignition switch ON?
.- -

'

HARNESS CHECK

Disconnect ABS control unit connector
(TK24) and meter connector (TK20
Brown).

I

I

NG+'

ABS control unit to meter
harness is faulty.

-

I

ABS

I

Connector

Terminals No. 19 24:
Continuity exists.
Terminal No. 19 and ground:
No continuity

OK

El

f

VEHICLE SPEED INPUT SIGNAL
CHECK 1

Meter control unit is faulty.
'2

Connect meter connector (TK20 Brown).
Terminal No. 19 and around:
"
Approx. 9V

I

='ELF0970D
El

@EM
rm-1

v
Connect ABS control unit connector
(TK24).
Start the engine and drive the vehicle.

rn

ffee

Terminal No. 19 and ground:
Specification

Refer to "Combination Meter InpuffOutput
Signal Specificationsnon the next page.

1

/

-ELFo971D

-

Meter control unit
connector on vehicle

r9

VEHICLE SPEED INPUT SIGNAL
CHECK 2

Meter control unit
connector on vehicle

L

OK

OK

Meter control unit is faulty.

Pelform ABS self-diagnosis
5'
check faulty circuit.
and

Refer to BR section ("ABS
SYSTEMn).

COMBINATION METER
Combination Meter InputlOutput Signal
Specifications
Terminal No.

Measuring condition
Signal name
Ignition switch

Operation or condition
Approx. 8 - 10V

Disconnect ECM connector.

At 2.000 rprn: Approx. 3.OV
IVI

15
10
5
0

Tachometer drive
signal

ELF0973D

Engine is idling or running at
!,000rpm.

RB25DET
At ~dling:Approx. 7.2V

At 2.000 rprn: Approx. 7 2 V

(VI

(VI

15
10
5
0

I5
10
5
0

RS
ELF0974D

-uel gauge signal

Refer to "Component Parts Inspection" (EL-27).
OFF

Approx. 12V
With TCS
Vehicle speed: Approx. 40 kmA
(VI

Veh~cleSpeed Approx 60 k m h

15
10
5
0

Body
lrounc

-5

e speed inpi

Speedometer is in operation.
Vehicle speed is approx.
10 kmh.)
Vehicle speed is approx.
i0 kmh.)

-1 0
-1 5

Without TCS
Vehcle speed: Approx. 40 k
IV!

15
10
5
0

h

Vehicle speed: Approx. 60 k m h

(V)
15
10
5

0

ELF0376D

hermal transmitte
iignal

-

Refer to "Component Parts Inspection" (EL-27)

gnition power sup
'IY

-

Approx. 12V

;peedometer is not in operaon.

Approx. 4.8V or OV

Vehicle speed is approx. 40 kwh: Approx. 2.4V

d ! ! ,! ! ! ! ! ! ! ]

(Vi

rehicle speed sign
2 pulses)

Voltage

the

part of the

ipeedometer is in operation.
Vehicle speed is approx.
0 kmm.)

indicates the value checked with an

)gue circuit tester

ST

RA

I

COMBINATION METER
Combination Meter Input/Output Signal
Specifications ( ~ o n t ' d )
Measuring condi!ion

Signal name

Specification

Approx. 4.8V or OV

operation.

--

Vehicle speed is approx. 40

Vehicle speed signal
(8 pulses)

-

Approx. 2.4V

Speedometer is in operation.
(Vehicle speed is approx.

Body
ground

40 km~h.)

I--

ELF0978D

Ground

ON

Oil pressure sensor
signal
J

-

I

-

Approx. OV

I

Refer to 'Component Parts Inspection" (EL-28).

I

I

Voltage of the upper part of the wave form indicates the value checked with analogue circuit tester.

Component Parts inspection
SPEEDOMETER, TACHOMETER, FUEL GAUGE AND
WATER TEMPERATURE GAUGE
Remove each meter from the meter control unit and check the
resistance between the terminals as shown below.

-

Checkina terminal

Water
temperature gauge

Fuel gaugc

Speedometer and
tachometer

I

Fuel gauge and water
temperature gauge
A-C

A-C
B-D

I
I

I

B-C

Resistance R

- 310

190 260
ADD~OX.

I

Approx. 230

OIL PRESSURE GAUGE
Disconnect oil pressure sensor connector.
Turn the ignition switch ON, and connect test lamp and lead
wire with the meter attaching screw as shown left. Check the
gauge indication.

1

Gauge indication with shorted

Gauge indicaion with 3.4W
test lamp connected
ELF0980D

COMBINATION METER
Component Parts Inspection (Cont'd)
Fuel gauge unit harness
connector

Lower side

<

h

Lead switch harness connector on
fuel gauge unit

Harness connec:or on lead sw~lch

L

Upper side

I

I

With fuel

I

T/f

Without fuel

Lower side
(Empty)
(Full)

FUEL GAUGE UNIT
Remove fuel gauge unit from the vehicle.
Check the gauge resistance on the gauge with the fuel gauge
at Empty and then Full.
SD
Terminal No.

Float position

Resistance R

Full

Approx. 6 max.

Empty

Approx. 80 min.

1-3

LEAD SWITCH
Remove fuel gauge unit from the vehicle.
Check continuity between terminals on the lead switches in the
tank.
Termina! No.

I

Condition

I

Continuity

5- 7

With fuel

Yes

6-7

Without fuel

No

There is no continuity when approx. 26 of fuel is left in the sub fuel tank.

THERMAL TRANSMITER
0

When the engine has warmed up to approx. 80°C, measure
resistance between thermal transmitter and body ground.
Specification: Approx. 76 - 90Q

COMBINATION METER
Component Parts Inspection (Cont'd)
If the measured resistance is out of the specification with the
thermal transmitter on vehicle, remove the thermal transmitter
from the vehicle and measure resistance as shown left.
Water temperature "C

1

Resistance R

Approx. 60

I

Approx. i 7 0 - 210

Approx. 65

I

Approx. 140 170

Approx. 80

I

Approx. 76 90

Appro~.100

I

-

-

-

-

Approx. 47 - 53

OIL PRESSURE SENSOR (OIL PRESSURE WARNING
LAMP SWITCH)
Check continuity between oil pressure sensor and body ground.
Terminal No.

1

Condition

Oil pressure
MPa (kg/cm2)

Engine is stopped.

Less than
0.01 0.024
(0.1 0.25)

-

Yes

Engine is started.

More than
0.01 - 0.024
(0.1 - 0.25)

No

Continuity

OIL PRESSURE SENSOR
Check the resistance between the oil pressure sensor and body
ground.
Terminal No.

I Oil pressure MPa (kgkmq-1

Resistance R

0.2 (2.0)

Approx. 37 - 45

TRIPLE METER
Special Service Tool
Tool number
Tool name

Description
i

Boost sensor check

€GI51 3 0000
Handy vacuum pump

Component Parts Location
Triple meter

I

Circuit Diagram

To lighting SW or tail lamp relay
Behind triple meter

h

Boost sensor

Oil temperature sensor

*

BOOS^ sensor

TRIPLE METER
Triple Meter InputlOutput Signal Specifications
-

Measuring condition

Signal name

Terminal No.

Specification

Operation or condition

lgnition switch

1

Boost sensor signal

ON

0 mmHg

Approx. 2.2V

4

Illumination power supply

OFF

Lighting switch: 1ST

Approx. 12V

9

illumination ground

10

Ground

ON
ON

14

ignition power supply

ON

17

Oil temperature sensor signal

I

-

Approx. OV

I

Approx. OV

-

Approx. 12V

I Refer to "Component Parts Inspectionn.

Component Parts Inspection
BOOST SENSOR
Connect handy vacuum pump (special service tool) to boost
sensor.
Apply battery voltage (12V) to terminal No. 1 and connect terminal No. 3 to the ground. Then, measure voltage between
terminal No. 2 and the ground.
Pressure kPa (mmHg)

I

Atmospheric pressure

I

-47 (-350)

1

Voltage V
-

p
p

Approx. 2.2
Approx. 1.4

OIL TEMPERATURE SENSOR
Remove oil temperature sensor from the vehicle and measure
resistance as shown left.
--

Oil temperature "C
Approx. 70

Resistance R
Approx. 92.0
- --

Approx. 90

Appro~.48.5

Approx. 110

Approx. 27.3

Approx. 130

Approx. 16.3

Approx. 150

Approx. 10.2

CAUTION:
Always use new engine oil.

-

- --

IGNITION KEY WARNING BUZZER AND LIGHT WARNING BUZZER
Component Parts Location

I Behind combination meter

Meter control unit

J

Circuit Diagram

Meter Control Unit InputlOutput Signal
Specifications
Measuring condition
Terminal No.

Signal name

Ignition switch

Driver door switch signal

29

Ignition power supply

42

Key-in detection switch
signal

I
Driver door switch

OFF

1

Specification

Measuring method
ON (Open)

Approx. OV

OFF (Closed)

Approx. 12V

ON

Approx. 12V
Remove the ignition key.

Approx. OV

OFF

Insert the ignition key.

Approx. 12V

I

54

55

Lighting switch signal
Ground

OFF
ON

Lighting switch: 1ST

-

ON

Approx. 12V

OFF

Approx. OV
Approx. OV

FRONT WIPER
Component Parts Location

Front wiper amplifier

Circuit Diagram

Front wiper motor
Front wiper and washer SW

Washer motor

----------------

HI

EL-17040

Terminal No.

Signal name

Front Wiper InpWOutput Signal Specifications
1
Measuring condition.
I
Specification
Ignition switch

1

Operation

Wiper motor position detection
signal

Wiper switch: LO position

(Reference)
I

OFF

Wiper motor HI signal

4

Wiper motor LO signal

Wiper switch

Ground

7

1

I Ignition power supply
I

8

HI

Approx. OV

OFF

Approx. 12V

Lo

ADDIOX.
OV
..

-

ON

Approx. OV

I

I

Washer operation detection signal
-

.
I

I

6

Approx. 12V

Wiper switch

ON

I

ON

I

ON

I

Washer motor is in operation.

Approx. OV

Washer motor is not in operation.

Approx. 12V

-

I

Approx. 12V

REAR WIPER

Component Parts Location
Rear of suspension tower (RH)

Circuit Diagram

Q
IGN :

Rear washer motor

B Rear wiper motor

-I

Washer motor operation
detection signal

1
Intermittent position de!ection signal

I *

I
I

Rear wiper and washer SW
~ S 1 H I O F F1 INTI
I- ON IWIW~
1

Wiper motor operation signal

Rear Wiper Amplifier InputlOutput Signal
Specifications
Terminal No.

Signal name

lanition switch

Washer motor operation detection
signal

ON

Wiper operation signal

ON

Ground

ON

Intermittent position detection signal

I

ON

Measuring condition
/
O~eration

Approx. OV
Approx. 12V

Washer motor is in operation.
Washer motor is not in operation.
Wiper motor is in operation.

Approx. OV
Approx. 12V

Wiper motor is not in operation.

I
1

ON

ACC power supply

Specification

-

Wiper switch

AD~rox.OV
Approx. OV
ARD~OX.
12V
..

. INT
I

Other than INT

-

Approx. 12V

Wlper motor operation signal

I

I

I

(Reference)

~

~

REAR DEFOGGER AND HEATER MIRROR
Component Parts Location
--

Behind combination meter

Circuit Diagram
10
A g28

81 1

Meter CIU

AIC auto ampl~f~er

Rear defogger relay

.

0

z
a

8

i

Rear defogger SW
(AC controller built-m)

u

Heater mirror

Rear defogger

TK20 (Brown)

TK20 (White)

EL-2181D

Meter Control Unit InputlOutput Signal
S ~ e c iications
f
Terminal No.

Measuring condition .
Signal name

Specification

Ignition switch

Operation

OFF

-

9

Battery

17

Rear defogger switch
signal

OFF

29

Ignition power supply

ON

55

Ground

ON

63

Rear defogger relay
control signal

ON

Rear defogger switch

Approx. 12V
ON (with switch pressed)

Approx. OV

OFF (regardless of
connection of AIC auto
amplifier)

Approx. 5V

Rear defogger switch

Approx. 12V
Approx. OV
ON

Approx. OV*

OFF

Approx. 12V

NOTE: Refer to "Auto Amplifier InputlOutput Signal Specifications".
': It changes to approximately 12V when 15 minutes or 30 minutes pass after the ignition switch is turned ON.

WIPER DEICER
Component Parts Location

/I
Wiper deicer switch

Wiper deicer switch

I
Circuit Diagram

m

Wiper deicer relay

lighting

Wiper deicer
SW (Timer
built-in)

Wiper deicer

Wiper Deicer Switch InputlOutput Signal
Specifications
Terminal No.

Measuring condition .

Signal name
Ignition switch

I

Specification

Operation

-

Indicator power supply

Approx. OV

OFF

Wiper deicer switch

Approx. 12V

ON
lllumination ground

OFF

3

Ground

ON

-

ON

-

--

4

lgn~tionpower supply

5

Wiper deicer relay control
signal

6

Illumination power supply

I

ON

-

-

2

1

-

Approx. OV
Approx. OV
-

-

1
ON

Approx. 12V
Approx. OV'

OFF

Approx. 12V

Wiper deicer switch

- -

OFF

Lighting switch: 1ST

*: When the wiper deicer is activated (approx. 15 minutes).

Approx. 12V

-

SERVICE DATA

SECTION

SD

CONTENTS
[
1
I
7 FS5R30A - 1
ENGINE MECHANICAL ...............................................2
MANUAL TRANSMISSION ...........................................10

L

]

RB20DE (UB)

AUTOMATIC TRANSMISSION .....................................12
TRANSFER ......................................... . . .............18
ENGINE MECHANICAL .................................................. 4
PROPELLER SHAFT .................................................19
FRONT FINAL DRIVE .................................................
20
1
7 RB25DET I
]
REAR FINAL DRIVE ..................................................... 22
DRIVE
SHAFT ...............................................................24
ENGINE MECHANICAL ..................................................6
AXLE & SUSPENSION .................................................25
ROAD WHEEL AND TIRE ............................................. 27
CLUTCH............................................................. .........-8
BRAKE..........................................................................-28
STEERING ........................ .............................................29
7
1 FS5W71C
SUPER HICAS............................................................30
MANUAL TRANSMISSION ............................................. 9

1 -

RB25DE

/I

.+..

I R B ~ O D E(UB)]

ENGINE MECHANICAL
STANDARD AND REPAIR LIMIT

I

Firing order
Compression pressure

MPa (kg/cm2)/rpm .

Distortion limit

1-5-3-6-2-4

standard

1.23 (12%)/300

Limit

0.93 (9.5)1300

Limit of variation between cylinders

0.1 (1.0)/300

Intake manifold

0.1

Intake manifold collector

0.1

mm Exhaust manifold

0.3

Cylinder head

0.2

Cvlinder block

e

Engine oil capacity
Spark plug

0.1

Without filter

Approx. 3.8

With filter

Approx. 4.2

MakerlTypeISpark plug gap

NGWPFR5G-1111.0 - 1-1

mm
-

- --

- - -

Ignition advance device

Electronically-controlled ignition advance

Engine idling speed
Idle base speed (during no feed back control)
Density of COIHC at idling speed

W'

650-.50 (N or P position for A/T)

rPm

600 (N or P position for AlT)

Wppm

Less than O.l/Less than 50

lgnition timing (during no feed back control)

mm .

Valve clearance (INTIEXH)

0.36+0.062/0.53+0.062

Hot engine
Cold engine (at ambient temperature)

Engine coolant total capacity [with reservoir tank (max. level)]

-

Thermostat opening temperature [start to open full open]
Radiator cap opening pressure

0.311~,0.04/0.50i0.04

e
e

Fuel tank capacity

Approx. 65
Approx. 9.4
82 - 95

"C

0.06 - 0.1 0 (0.6

MPa (kg/cm2)

I
Deflection amount of accessory V-belt

Power steering pump belt

N (kg)

8-10

1
1

Used
559 - 637
(57 - 65)

I

10-12

1
/

Limit
284 (29)

Fan belt

Power steering pump belt
Measured by pushing at 98 N (10 kg)
A/C compressor belt
mm
Fan belt

Power steering
pump be1t

I

A/C compressor belt

Measured with tension gauge

SEC.117
Fan belt

New
667 - 755
(68 - 77)

- 1.O)

1
1

1

6-8
3-5

1

7-9
4-6

1

16
12
7.5

-

[

ENGINE MECHANICAL

RB20DE (UB)

1

TIGHTENING TORQUE
Unit: N-m (kg-m)

Unit: N.m (kg-m)
Cylinder head bolt

Engine cover
Throttle body
Throttle position sensor
IAA unit (ACC valve)
lntake manifold collector

Cylinder head sub bolt
VTC solenoid
' Main bearing cap
Connecting rod nut

(upper)
Intake manifold collector
Intake manifold
Vacuum tank
Engine coolant temperature
sensor

-

--

Flywheel and drive plate
Engine coolant drain plug
Knock sensor

' Fuel tube
Pressure regulator
Fuel damper
Fuel hose clamp bolt
(in engine compartment)

Crank pulley
Cam pulley (INT)
Cam pulley (EXH)
Timing belt cover
Timing belt rear cover
Tensioner pulley
Idler pulley
Crankshaft position sensor

' Oil pan
Oil strainer
Oil pan drain plug

-

-

5.1 6.5 (0.52 0.66)
20 29 (2.0 3.0)
1) 5.5 - 7.5 (0.56 - 0.76)
?) 5.5 - 7.5 (0.56 0.76)
:Tighten separately in twice.)

-

-

Camshaft bracket

Camshaft baffle plate

-

-

Radiator mounting bracket
Auxiliary electric fan
Water pump
(M6 bolt)
(M8 bolt)
(MI 0 bolt)
Water inlet
Oil pump assembly

Exhaust manifold cover
' Exhaust manifold
Oxygen sensor

ignition coil
Spark plug
* Rocker cover

1) 29 (3.0)
2) 98 (10.0)
3) 0 (0)
4) 25 - 34 (2.5 - 3.5)
5) 95" - 100"
(Angle tightening)
9.0 - 12 (0.92 - 1.2)
25 - 34 (2.5 - 3.5)
49 - 59 (5.0 - 6.0)
1) 14 - 16 (1.4 1.6)
2) 45" - 50"
(Angle tightening)
93 - 103 (9.5 - 10.5)
34 - 44 (3.5 4.5)
25 34 (2.5 - 3.5)

Accelerator cable lock nut
Fuel tank strap
Fuel sender unit lock
ring
Exhaust manifold to front
tube
Front tube to catalytic
converter
Catalytic converter to cent
tube
Center tube to main
muffler
Alternator

(main)
(stay side)

Starter motor
': Tighten as specified tightening order.
1): Tighten separately in several times.

-

GI

Ec

h$7'

BW

ST

ENGINE MECHANICAL
STANDARD AND REPAIR LIMIT
Firing order
---

Compression pressure

-

-

--

-

-

Standard

1.26 (12.8)/300

Limit
MPa (kg/cm2)/rpm
Limit of variation between cylinders

Distortion limit

0.96 (9.8)/300
0.1 (1.OY300

Intake manifold

0.1

Intake manifold collector

0.1

mm Exhaust manifold

0.3

Cylinder head

0.2

Cylinder block
Engine oil capacity

0.1

Without filter

P

Approx. 3.8

With filter

Approx. 4.2

MakerKype/Spark plug gap

Spark plug

NGWPFR5G-11/1.0 - 1.1

mrn

lanition
advance device
"

I

Electronicallv-controlledianition
advance
"

Engine idling speed

rpm

650.-50 (N or P position for CVT)

Idle base speed (during no feed back control)

rpm

600 (N or P position for AIT)

Density of COIHC at idling speed
Ignition timing (during no feed back control)
Valve clearance (INTIEXH)

Less than O.l/Less than 50

%/ppm
BTDCO/rpm

15U600

Hot engine

mm

0.36~0.06210.53~0.062
0.31 -.0.04/0.50~0.04

Cold engine (at ambient temperature)

Fuel tank capacity
Engine coolant total capacity [with reservoir tank (max. level)]

-

Thermostat opening temperature [start to open full open]

Q

Approx. 65

e

Approx. 9.4
82 - 95

OC
MPa (kg/crn2) ,

Radiator cap opening pressure

0.06

1

I
I
/

Deflection amount of accessory V-belt

Measured with tension gauge

Power steering pump belt

N C compressor err

(kg) Fan belt
Measured by pushing at 98 N (10 kg)

I power steerina D U ~ Dbelt
*

I

I

AK compressor belt
mm
Fan belt

I

I SEC.! I 7
Fan belt

Power steering
pump beit

I

1

1

1

1

8-10
6-8
3-5

- 0.10 (0.6 - 1.O)
Used

1

Limit

ENGINE MECHANICAL
TIGHTENING TORQUE
Unit: N m (kg-m)
Engine cover
' Throttle body
Throttle position sensor
IAA unit (ACC valve)
' Intake manifold collector
(upper)
' Intake manifold collector
Intake manifold
Vacuum tank
Engine coolant temperature
sensor

5.0 - 6.5 (0.51 - 0.66)
1) 8.8 - 11 (0.9 - 1.1)
2) 18 - 22 (1.8 - 2.2)
2.0 - 2.4 (0.20 - 0.24)
8.4 11 (0.86 - 1.I)
18 - 22 (1.8 - 2.2)

Cylinder head sub bolt
VTC solenoid
Main bearing cap
Connecting rod nut

Flywheel and drive plate
Engine coolant drain plug
Knock sensor

Pressure regulator
Fuel damper
Fuel hose clamp bolt
(in engine compartment)

Crank pulley
Cam pulley (INT)
Cam pulley (EXH)
Timing belt cover
Ttming belt rear cover
Tensioner pulley
Idler pulley
Crankshaft position sensor

3) 0 (0)
4) 25 - 34 (2.5 - 3.5)
5) 95" - 100"
(Angle tightening)
9.0 - 12 (0.92 - 1.2)
25 - 34 (2.5 3.5)
49 - 59 (5.0 - 6.0)
1) 1 4 - 16 (1.4- 1.6)
2) 60" - 65"
(Angle tightening)
93 - 103 (9.5 - 10.5)
34 44 (3.5 - 4.5)
25 - 34 (2.5 - 3.5)

-

-

-

' Oil pan
Oil strainer
Oil pan drain plug

Camshaft baffle plate

1) 29 (3.0)
2) 98 (10.0)

Radiator mounting bracket
Auxiliary electric fan
Water pump
(M6 bolt)
(M8 bolt)
(M10 bolt)
Water inlet
Oil pump assembly

Exhaust manifold cover
Exhaust manifold
Oxygen sensor

* Camshaft bracket

Cylinder head bolt

-

' Fuel tube

Ignition coil
Spark plug
Rocker cover

Unit: N.m (kg-m)

5.1 - 6.5 (0.52 - 0.66)
20 - 29 (2.0 - 3.0)
1) 5.5 - 7.5 (0.56 - 0.76)
2) 5.5 - 7.5 (0.56 - 0.76)
:Tighten separately in twice.)

Accelerator cable lock nut
Fuel tank strap
Fuel sender unit lock
ring
Exhaust manifold to front
tube
Front tube to catalytic
converter
Catalytic converter to center
tube
Center tube to main
muffler
Alternator

(main)
(stay side)

Starter motor
': Tighten as specified tightening order.
1): Tighten separately in several times.

@

E
j$?

BR

a=

ENGINE MECHANICAL
STANDARD AND REPAIR LIMIT
Firing order

1-5-3-6-2-4

Compression pressure
MPa (kg/cm2)/rpm -

Standard

1.20 (12.2)/300

Limit

0.90 (9.2)/300

Limit of variation between cylinders

0.1 (1.0)/300

Distortion limit

-

--

- -

Intake manifold

0.1

Intake manifold collector

0.1

mm Exhaust manifold

0.3

Cvlinder head

0.2
-

( Cylinder block

-- -

0.1

Without filter

Engine oil capacity

Approx. 3.9

'with filter

I~ a k e r f l ~ ~ e /plug
~~a
gap
rk

-

Spark plug

--

Aoorox. 4.3
-

NGKPFRGG-11/1.0

- 1.1

Electronically-controlledignition advance

ignition advance device
Engine idling speed

rPm

Idle base speed (during no feed back control)

Pm

Density of COIHC at idling speed

650-e50 (N or P position for A/T)
600 (N or P position for AQ
Less t h a n b l ~ e s sthan 50

Wppm
BTDCO/rpm

Ignition timing (during no feed back control)
Valve clearance (INT/EXH)

r
I

-

mm

15dY600

Hot engine

mm

0.36+0.062/0.53i0.062

Cold engine (at ambient temperature)

Fuel tank capacity
Engine coolant total capacity [with reservoir tank (max. level)]
Thermostat opening temperature [start to open - full open]
Radiator cap opening pressure

0.3 120.04/0.50a0.04

4

Approx. 65

t

Approx. 9.4

OC

82 - 95

MPa (kg/cm2)

Deflection amount of accessory V-belt

Power steering pump belt

,
Measured with tension gauge
(kg)

0.06

New
667 - 755
(68 - 77)

1

- 0.1 0 (0.6 - 1.O)
Used

-

1

Limit

559 637
(57 - 65)

284 (29)

AfC compressor belt

667 - 755
(68 - 77)

559 - 637
(57 - 65)

284 (29)

Fan belt

667 - 755
(68 - 77)

559 - 637
(57 - 65)

284 (29)

10 - 12

16

-

Power steering pump belt
Measured by pushing at 98 N (10 kg) '
AfC compressor belt
mm
Fan belt

I

SEC.117
Fan belt

Power steering
pump belt

8 - 10
6-8

7-9

12

3-5

4-6

7.5

pEZBq

ENGINE MECHANICAL
TIGHTENING TORQUE

Unit: N.m (kg-m)

Unit: N.m (kg-m)
Engine cover
' Throttle body
Throttle position sensor
IAA unit (ACC valve)
' Intake manifold collector
* Intake manifold
Engine coolant temperature
sensor

5.0 - 6.5 (0.51 - 0.66)
1) 8.8 - 11 (0.9 - 1.1)
2) 18 22 (1-8 2.2)
2.0 2.4 (0.20 - 0.24)
8.4 - 11 (0.86 - 1.1)
18 22 (1.8 - 2.2)
18 22 (1-8 - 2.2)
20 29 (2.0 3.0)

-

-

-

-

' Fuel tube

Pressure regulator
Fuel damper
Fuel hose clamp bolt
(in engine compartment)

Radiator mounting bracket
Auxiliary electric fan
Water pump
(M6 bolt)
(M8 bolt)
(MI 0 bolt)
Water inlet
Oil pump assembly

Exhaust manifold cover
' Exhaust manifold

Crank pulley
Cam pulley (INT)
Cam pulley (EXH)
Timing belt cover
Timing belt rear cover
Tensioner pulley
Idler pulley
Crankshaft position sensor
' Oil pan
Oil strainer
Oil pan drain plug

' Camshaft bracket

Camshaft baffle plate

Cylinder head sub bolt
VTC solenoid
" Main bearing cap
Connecting rod nut

Oil jet
Flywheel and drive plate
Engine coolant drain plug
Knock sensor

Turbocharger
Oil tube
Water tube
(block side)
(turbocharger side)
Oxygen sensor

Ignition coil
Spark plug
' Rocker cover

' Cylinder head boit

5.1 - 6.5 (0.52 - 0.66)
20 - 29 (2.0 - 3.0)
1) 5.5 - 7.5 (0.56 0.76)
2) 5.5 - 7.5 (0.56 0.76)
(Tighten separately in twice.)

-

1) 29 (3.0)
2) 98 (10.0)
3) 0 (0)
4) 25 - 34 (2.5 - 3.5)
5) 95" - 100"
(Angle tightening)
9.0 - 12 (0.92 - 1.2)
25 - 34 (2.5 - 3.5)
49 - 59 (5.0 - 6.0)
1) 14 16 (1.4 1.6)
2) 60" 65"
(Angle tightening)
30 - 40 (3.1 - 4.1)
93 103 (9.5 - 10.5)
34 - 44 (3.5 - 4.5)
25 - 34 (2.5 3.5)

-

AT

-

-

BR

ST

-

-

3.8 4.5 (0.39 - 0.46)
5.1 6.5 (0.52 - 0.66)
17 - 21 (1.7 - 2.1)
20 23 (2.0 2.3)
35 - 47 (3.6 - 4.8)
16 - 21 (1.6 - 2.1)
9.0 - 12 (0.92 - 1.2)

-

Accelerator cable lock nut
Fuel tank strap
Fuel sender unit lock
ring
Exhaust manifold to front
tube
Front tube to catalytic
converter
Catalytic converter to center
tube
Center tube to main
muffler
Alternator

-

I%

(main)
(stay side)

Starter motor

': Tighten as specified tightening order.
1): Tighten separately in several times.

-

I%$

kIA

a=

CLUTCH
CLUTCH PEDAL
RB25DE

RB20DE

Engine type
Pedal height

mm

Pedal height at clutch released

mm

Pedal free play (clevis pin clearance)

mm

RB25DET

172 - 182
More than 81

More than 82

More than 85

9 - 16 (1.0 - 3.0)

CLUTCH DISC

I

Engine type

I

RB20DE

I

225 dia.

Size

mm

Wear limit (depth to rivet head)

mm

Runout limit / diameter at measurement

mm Less than 0.7 / 215 dia.

Maximum backlash at spline

mm

I

RB25DE

RB25DET

I

240 dia.

250 dia.

0.3
Less than 1.0 / 230 dia.

Less than 0.7 / 240 dia.
1.O

0.9

CLUTCH COVER
Engine type

RB20DE

RB25DE

RB25DET
250 dia.

Size

mm

225 dia.

240 dia.

Diaphragm spring lever height

mm

33.0 - 35.0

37.5 - 39.5

Variation in diaphragm spring lever height

mm

Less than 0.7

Less than 0.5

48.2

- 50.2

Less than 0.6

TIGHTENING TORQUE
Unit: N-m (ka-m)
Clutch cover fixing bolt
Clutch master cylinder fixing bolt

I

7.9

- 10 (0.8 - 1.I)

MANUAL TRANSMISSION
ADJUSTING SHIMS

BACKLASH
-

Items

Standard mm
Selective parts

- 0.10

Main drive gear

0.05

1st gear

- 0.20
0.05 - 0.20
0.05 - 0.20
0.05

2nd gear
3rd gear

I
1
1

4th gear
5th gear
Reverse idler gear

Measurement
height
mm

Thickness
mm

Parts number

Counter shaft
front bearing

0.05 - 0.20
Ail

0.05 - 0.20

BAULK RlNG CLEARANCE

END PLAY

Measurement
position

Standard mm

Items
1st gear

1

0.31

2nd gear

1

0.11-0.21

1

0.11 - 0.21

3rd gear

- 0.41

2nd and 3rd
Inner baulk ring clearance 'an
-

7

4th gear

-

5th gear

0.24 0.41

Reverse idler gear

0.05 - 0.50

-

Counter gear

0 - 0.16

Main drive gear end play

0 - 0.13

Mainshaft high-synchro side

0 - 0.18

Rear end of mainshaft end bearing

0 - 0.14

SNAP RlNG
Selective parts

Thickness m m

I

Outer baulk ring

lnn'er baulk ring

(

4th and 5th
Parts number

Main drive gear

1

- --

Reverse gear

1.20 - 1.60

-

1.10 1.55

1 Less than 0.8

1 Less than 0.7

TIGHTENING TORQUE
Unit: N.m (kg-rn)

Counter drive gear

I

TIM side to

I

1

High-synchro side
I

I

1.1

Mainshaft
Rear end of shaft

32263 V5200
32263 "5201
32228 20 100

Transmission to engine
mounting bolt

Engine side to
TIM side

-

40 49
30 - 39
(3.0 - 4.0)

MANUAL TRANSMISSION
SNAP RING AND C-RING

END PLAY
1st gear

I
I

2nd gear

I

Items
--

I

3rd gear

I

Standard mm

Thickness

mm

Parts number

0.23 - 0.33

0.23 - 0.33
0.06 - 0.16

5th gear

I

0.23 - 0.33

Reverse gear

I

0.33 - 0.43

4th gear

Selective parts

Main drive gear

-

Reverse idler gear

0.30 - 0.53

Counter gear

0.10 0.25
--

-

Main drive gear end play

0 - 0.10

Mainshaft (front) end play

0 - 0.10

Mainshaft (rear) end play

0 - 0.10

Counter gear (front) end play

0.10 - 0.25

Counter gear (rear) end play

0 - 0.10

Mainshaft (front)

Mainshaft (rear)

Counter gear (rear)

32348 01G15
32348 01GOO
32348 01GO1
32348 01GO2
32348 01GO3
32348 01GO4
32348 01GO5
32348 01GO6
32348 01GO7
32348 01GO8
32348 01GO9
32348 01G10
32348 01G11
32348 01G12
32348 01GI 3
32348 01G14

pmtq

MANUAL TRANSMISSION
BAULK RING CLEARANCE

THRUST WASHER
Selective parts

I

Thickness mm

I

Counter gear
(front)
,

Reverse idler

Parts number
32218 01GOO
32218 01G11
32218 01G12
32218 01G13
32218 01G14
32218 01G04
32218 01G15
32218 01G16
32218 01GI7
32284 01G10
3228401G11

Measurement position

Standard
mm

Wear limit
mm

Ist, 2nd and 3rd (double cone)
lnner baulk ring clearance "a*

Less than
0.2

Outer baulk ring clearance "bn

Less than
0.2

EC

Outer baulk ring
L
,

Syncf
cone
lnner baulk ring
MTA0004D

Less than
0.7

4th and 5th
Reverse gear

Less than
0.7

Reverse baulk ring
clearance "cn
Reverse cone

--

TIGHTENING TORQUE
Unit: N.m (kg-m)

1 TIM side to
Transmission to engine
mounting bolt

Engine side to

IT/M side

1
1

-

40 49
30 - 39
(3.0 - 4.0)

&$

SHIFT SPEED
Engine type (model code)
Throttle position

RB20DE (4AX03)

Vehicle speed

Shift pattern
D,--+D2

Full throttle

Half throttle

D344

D4-43

Normal

46 50

-

91 - 99

149-159

144-154

86 - 94

41 - 45

Power

46 - 50

91 - 99

149 - 159

144 - 154

86 - 94

41 - 45

Normal

31 - 35

62 - 68

101 - 109

71 - 79

41 45

-

6-10

Power

43 - 47

84 - 90

135 143

-

83 - 91

45

- 51

6-10

D,-*

D,

Half throttle

Full throttle

Half throttle

D3+

D2-4

D2

--

RB25DE (4AX01)
-

,

-

~,-a

D2+ D3

D,-,D~

D,-*D,

~2~

DI

Normal

50 - 54

101 - 109

157 - 167

151 - 161

96 - 104

40 - 44

Power

50 - 54

101 - 109

157 167

-

151 - 161

96

- 104

40 - 44

Normal

32 - 36

61 - 67

104 - 112

80 - 88

Power

42 - 46

85 - 91

135 143

-

87 95

I

Engine type (model code)
Throttle position

D3

Vehicle speed km/h

Shift pattern

Full throttle

D23

I

Engine type (model code)
Throttle position

km/h

-

37 - 43

6 - 10

- 51

6 - 10

45

RB25DET (4AX00)

Vehicle speed

Shift pattern

I

D2-rD3

Normal

45 - 49

103 - 111

Power

45 49

-

103 111

Normal

31 - 35

74 - 80

Power

39 - 43

84 - 90

I

D3*D4

I

km/h
D44D3

I

D3*D2

1

D2jD,

167 - 177

161 - 171

98 - 106

40 - 44

167 177

-

161 - 171

98 - 106

40 - 44

111 - 119

63 - 71

32 - 38

6-10

133 - 141

98 - 106

50 - 56

6 - 10

AUTOMATIC TRANSMISSION
LOCK-UP SPEED
Engine type (mode code)
Closed throttle
Half throttle

Vehicle speed in
D, position

Closed throttle

Lock-up OFF

krnh Half throttle
Closed throttle

Lock-up ON

kmlh Half throttle

Vehicle speed in
D, position

Closed throttle

Lock-up OFF

kmlh Half throttle
-

-

-

-

Closed throttle: Throttle opening of less than 118 with the closed throttle position switch off position
Half throttle: Throttle opening of 418

STALL SPEED
Engine type (model code)

Stall engine speed

rpm

LINE PRESSURE
Line pressure MPa (kg/cm2)
Engine speed
-- -

At idle engine speed
At stall engine speed

D, 2, and 1 positions (4AT)
D, 3, and 2 positions (M-AT)

R position

I

1

-

0.58 0.62 (5.9 - 6.3)
1.71 - 1.78 (17.4

- 18.2)

I

1

0.47

- 0.51 (4.8 - 5.2)

1.22 - 1.29 (12.4

- 13.2)

CONTROL VALVE SPECIFICATIONS
Valve loc:ation
L1
L2
L3

Valve designation
Torque converter regulator valve
Pressure modifier valve
Pressure regulator valve
4AX03 model
Accumulator control valve
Except 4AX03 model
Throttle accumulator piston
Shift valve B
Shift valve A
4AX03 model
Overrun clutch control valve
Except 4AX03 model
Overrun clutch reducing valve
Pilot valve
Torque converter clutch control valve
4AX03 model
Shuttle shift valve S
Except 4AX03 model
1 reducing valve
4AX03 model
3-2 timing valve
Except 4AX03 model
Servo charger valve
Lock-up regulator valve

L4

Upper body

L5
L6
L7
L8
L9
L10
L11
L13

Lower body

L14
L15
L16

Total length
27.5
43.5
68.0

mm

Parts number
31780 41x01
31751 41x02
31741 80x00
3 1772 4AXOO
3 1772 4AX02
31675 41X07
31766 4AXOO
31766 51x03
31766 51X04
31766 4AX02
31772 41X06
31772 41x01
31832 4AX01
31766 51x05
31766 4AX01
31772 41x12
31772 4AX01
31772 71x00
31772 41X03
31772 21x00

55.5
19.5
56.0
75.0
63.5
65.0
54.5
38.5
58.0
57.0
67.0
37.5
37.5
41 .O
66.0
38.5

-

CONTROL VALVE SPRING SPECIFICATIONS
Unit: mm
I

Valve spring location

I

1

Valve spring designation

Free length

I

Outer
diameter

'D"

I

Wire
diameter

I

"d"

Winding
direction

Parts
number
31742
4AXOO
3 1742
41x19
31742
4AXO 1
31742
41X I 5
31742
4AX02
3 1762
41x01
3 1762
41x03
31762
4AXOO
31742
41X63
31742
41x65

L1

Torque converter regulator valve spring

36.0

9.0

1.4

Right

L2

Pressure modifier valve spring

31.95

6.8

0.8

4

L3

Pressure regulator valve spring

31.8

15.0

1.3

1

L4

Throttle accumulator piston spring A

30.5

9.8

1.3

7

L5

Shift valve B spring

23.5

11.0

0.8

t

L6

Shift valve A spring

25.0

7.0

0.65

?

Overrun clutch control valve
spring

4AX03 model

23.6

7.0

0.6

L7

T

Except 4AX03 model

38.3

8.0

0.55

T

4AX03 model

32.5

7.0

0.85

T

Except 4AX03 model

35.5

7.0

0.9

t

Pilot valve spring

26.5

9.0

1.1

T

Torque converter clutch control valve spring

46.5

6.5

0.8

?

4AX03 model

54.0

5.65

0.75

T

Except 4AX03 model

25.0

7.0

0.65

T

4AX00 model

22.6

6.7

0.7

?

Except 4AX00 model

25.4

6.75

0.75

T

3-2 timing valve spring

23.0

6.7

0.7

T

Servo charger valve spring

23.0

6.7

0.7

T

Lock-up regulator valve spring

33.89

6.95

0.55

..I

Upper body

/ /
L~

Overrun clutch reducing
valve spring

r

I
I

Shuttle shift valve S spring

1 reducing valve spring

Lower body

AUTOMATIC TRANSMISSION
ACCUMULATOR
Accumulator spring
--

Spring designation

Free length

Accumulator spring A

-

mm

31605 41X02

43.0
4AX03 model

Accumulator spring B

-

Parts number

31605 41XI 0
66.0

Except 4AX03 model

31605 4AX03

Accumulator spring C

45.0

31605 4AX00

Accumulator spring D

58.4

31605 41X06

EC

AT

Accumulator O-ring
Accumulator

A

B

C

D

Large O-ring

mm

45

50

50

45

Small O-ring

mm

29

45

34

29

0

J-J

ST

BAND SERVO PISTON
Band servo piston spring
Model code

4AX00,4AX01

Spring designation

HA

4AX03

Free length mm

Parts number

Free length mm

Parts number

Band servo piston spring A

47.6

31605 41X I 4

47.6

31605 41X I 8

Band servo piston spring B

-

-

-

-

Band servo piston spring C

29.7

31605 41x01

29.7

31605 41XO1

CLUTCH AND BRAKE
Designation

I

Model code

I

I

Reverse clutch
4AX00

I

Hiah clutch

4AX01. 4AX03
--

Number of plates
Drive
Piate

Parts number

2

2

31532 41x73

31532 41X24

Thickness

mm

2.0

2.0

Wear limit

mm

1.8

1.8

Number of plates

Driven
plate

Parts number
Thickness

Clearance

2

2

31536 41X20

31536 41x14

mm

2.8

"7m 1

0.5 - 0.8

I%I
Thick-

Retaining plate

2.0
0.5 - 0.8

I
Thick-

Parts number

Parts number

Thickness
mm

Thick-

EL

--

Designation

High clutch

Model code

4AX03

4AX00

4AX01,4AX03

4

7

6

31532 41x11

31532 41X63

31532 41 X63

1.6

2.0

2.0

1.4

1.8

1.8

7

7

6

Number of plates
Drive plate

Parts number
Thickness

mm

Wear limit

mm

Number of plates
Driven plate

IParts number
Thickness

Clearance

1

31536 41X21

I

2.0

t

mm
mm

1

Thickness
mm

Pans number

Forward clutch

I

31536 41X I 3

1

2.0

I

Thickness
mm

II

31536 41x13

1

Parts number

2.0

Thickness
mm

Parts number

Retaining plate

Designation
Model code

I Number of plates
Drive plate

4AX00,4AX01,4AX03

4AX00

4AX01,4AX03

3

7

5

31532 41X62

31532 41x69

31532 41X69

2.0

1.6

1.6

1.8

1.4

1.4

5

7

7

31536 41x10

31666 41X02

31666 41X02

2.0

2.0

2.0

I

Parts number
Thickness

mm I

Wear limit

mm

Number of plates
Driven plate

Parts number
Thickness

Clearance

Retaining plate

Low & reverse brake

Overrun clutch

mm
mm

I

1.0

Thi","~ss

- 1.4

1

Parts number

0.5

- 0.8

0.5

- 0.8

1 Thi","rss
1
1 ThigEss
Parts number

Parts number

31667 41X I 7
31667 41XI1
31667 41x12
31667 41X I 3
31667 41x14
31667 41X07
31667 41X08
31667 41XOO
31667 41x01
31667 41X02
31667 41X03
31667 41X04
31667 41XO5

31667 41x13
31667 41XI 4
31667 41 X07
31667 41 X08
31667 41XOO
31667 41XO1
31667 41X02
31667 41X03
31667 41 X04
31667 41 X05
31667 41 X06

AUTOMATIC TRANSMISSIO
OIL PUMP AND LOW ONE-WAY CLUTCH

-

0.15 0.22

Outer gear to crescendo
Oil pump clearance

- 0.18
0.03 - 0.05
0.10 - 0.25
0.11

mm Outer gear to housing
Inner gear and outer gear to housing

Oil pump cover to seal ring clearance

mm ,

Low one-way clutch inner race to seal ring clearance

mm

Standard
Limit

0.25

Standard

0.10

Limit

- 0.25

0.25

-

TOTAL END PLAY
- -

Total end play

mm

0.25

- 0.55
I

I

Thickness
mm

Parts number

Bearing race

REVERSECLUTCHENDPLAY
Reverse clutch drum end play

0.55 - 0.90

mm

I

Oil pump thrust washer

ADJUSTMENT OF TANDEM BRAKE BAND TENSION
N.m (kg-m)

Anchor end pin tightening torque

4.0

I

Number of turns of anchor end pin back-off

2.375

- 2.625

41 - 50 (4.1 - 5.2)

N-m (kg-m)

Lock nut tightening torque

- 5.8 (0.4 - 0.6)

TIGHTENING TORQUE
Unit: N.m (kg-m)
Transmission to engine mounting bolt

ITIM side to engine side
I Engine side to TIM side
--

-- -

-

-

-

-- -

-

-

I
I

40 - 49 (4.0 - 5.0)

30 - 39 (3.0 - 4.0)

TRANSFER
END PLAY
Designation

Standard mm

Clutch hub

0.2 - 0.35

Multiple disc clutch

0.2 - 0.5

--

CLUTCH HUB BEARING ADJUSTING SHIM
Thickness

mm

Parts number

0.40
0.50
0.60
0.70

Thickness

33112 05U04
33112 05U05
33112 OSUOO
33112 05U01

mm

Parts number

0.80
0.90
1-00

33112 05U02
33112 05U03
33112 05U06

RETAINER PLATE
Thickness

mm

I

Parts number

Thickness

I

mm

Parts number

--

CLUTCH SPECIFICATIONS

I Number of plates

(

7
--

Drive plate

Parts number

31532 05UOO

Thickness

mm

2.0

Wear limit

mm

1.8

Number of plates
Driven plate

12

Parts number
Thickness

3 1536 1P400

mm

2.0

-

PROPELLER SHAFT

Type
2S56A
3S63C-T
3S71C-T
3F80A-2VL107

Journal bearing end play mm

0

Amount of runout

mm

Less than 0.6

TIGHTENING TORQUE
Unit: N.m (kg-m)
Center bearing bracket to underbody

42 - 48 (4.2 - 4.9)

Propeller shaft flange yoke to companion flange

55 - 64 (5.6 - 6.6)

.

FRONT FINAL DRIVE
DRIVE GEAR RUNOUT
Amount of runout at reverse side of drive gear

Type

mm

Less than 0.05

F160

ADJUSTMENT OF SIDE GEAR CLEARANCE
Clearance at reverse side of side gear

TYpe

mm

Less than 0.15, and side gear must be rotated freely.

F160

Thrust washer for adjustment of clearance at reverse side of side gear
Thickness mm

1

Parts number

1 Thickness

mm

1

Parts number

1 Thickness

mm

1

Parts number

1 Thickness

rnm

1

Parts number

ADJUSTMENT OF DRIVE PINION HEIGHT
Adjusting washer for adjustment of drive pinion height
Thickness mrn

1

Parts number

1 Thickness

mm

1

Parts number

1 Thickness

Parts number

mm

Thickness mm

Parts number

ADJUSTMENT OF DRIVE PINION PRE-LOAD
Drive pinion pre-load N-m (kg-m)

Type

Adjusting washer for adjustment of drive pinion pre-load
-

-

-

1 Parts numbaJ~hickness
-

p
p
p
p

Thickness m m r Parts number [ ~ h i c k n e s s mm

--

mm

--

Parts number

Thickness mrn

-

Parts number

2.55
2.57
2.59

Adjusting spacer for adjustment of drive pinion pre-load
Thickness

mm

I

Parts number

I

Thickness rnrn

I

Parts number

I

Thickness

mm

1

Parts number

FRONT FINAL DRIVE
ADJUSTMENT OF SIDE BEARING PRE-LOAD
Adjusting washer for adjustment of side bearing pre-load
Side retainer side
Thickness mm

1

Pans number

I Thickness

mm

1

I Thickness

Pans number

mm

1

I Thickness

Parts number

mm

1

Parts number

Carrier case side
Thickness mm

Parts number

Thickness mm

Parts number

Thickness mm

Parts number

Thickness mm

Parts number

1.95
2.00
2.05

38453 03VOO
38453 03V01
38453 03V02

2.15
2.20
2.25

38453 03V04
38453 03V05
38453 03V06

2.35
2.40
2.45

3845303V08
3845303V09
3845303V10

2.55
2.60
2.65

38453 03V12
38453 03V13
3845303V14

ADJUSTMENT OF TOTAL PRE-LOAD
F160

Type
Total pre-load with oil seal installed

1.6 - 2.1 (0.16 - 0.22)

N.m (kg-m)

Drive gear backlash

mm

0.10

- 0.15

ADJUSTMENT OF SIDE SHAFT END PLAY
I

F160

Type

Side shaft end play

0 - 0.1

mm

Adjusting shim for adjustment of side shaft end play
Thickness

mm

I

Parts number

I

Thickness mm

I

Parts number

REAR FINAL DRIVE
DRIVE GEAR RUNOUT

I

Type

Amount of runout at reverse side of drive gear

I

R200 (Strengthened), R200V (Strengthened)

mm

Less than 0.05

ADJUSTMENT OF SIDE GEAR CLEARANCE
mm

Clearance at reverse side of side gear

Type
R200 (Strengthened)

Less than 0.15, and side gear must be rotated freely.

R200V (Strengthened)

0.03

- 0.09

Thrust washer for adjustment of clearance at reverse side of side gear
R200 (Strengthened, 2-pinion)
-

--

-

R200 (Strengthened, 4-pinion)

-,

Thickness mm

R200V (Strengthened)

Parts number

Thickness mm

Parts number

Thickness mm

38424 N3110
38424 N3111
38424 N3112

0.75 - 0.80
0.80 - 0.85
0.85 0.90

38424 1OVOO
38424 1OVO1
38424 1OV02

0.80
0.83
0.86
0.89
0.92
0.95
0.98
1.O1
1.04
1.07
1.10
1.13
1.16
1.19
1.22
1.25
1.28
1.31
1.34
1.37
1-40
1.43
1.46
1.49

-

Thrust washer

Parts number

ADJUSTMENT OF DRIVE PINION HEIGHT
Adjusting washer for adjustment of drive pinion height
--

-

R200 (Strengthened), R200V (Strengthened)

Type
Thickness
Adjusting
washer

3.09
3.12
3.1 5
3.18
3.21

mm

Parts number

Thickness

38154 P6017
38154 P6018
38154 P6019
38 154 P6020
38154 P6021

3.24
3.27
3.30
3.33
3.36

mm

Parts number
38154
38154
38154
38154
38154

P6022
P6023
P6024
P6025
P6026

Thickness mrn
3.39
3.42
3.45
3.48
3.51

Parts number
38154
38154
38154
38 154
38 154

P6027
P6028
P6029
P6030
P6031

Thickness
3.54
3.57
3.60
3.63
3.66

mrn

Parts number
38154
38 154
38154
38 154
38154

P6032
P6033
P6034
P6035
P6036

REAR FINAL DRIVE
ADJUSTMENT OF DRIVE PINION PRE-LOAD

I
N.rn (kg-rn) I

TYpe
Drive pinion pre-load

R200 (Strengthened), R200V (Strengthened)
1.1 - 1.6 (0.11 - 0.17)

Adjusting washer for adjustment of drive pinion pre-load
--

R200 (Strengthened), R200V (Strengthened)

TYpe
Thickness mm

Parts number

Thickness

Parts number

mm

EG

Adjusting washer

Adjusting spacer for adjustment of drive pinion pre-load

R8

R200 (Strengthened), R200V (Strengthened)

Type

Thickness mm
45.6
45.9
46.2
46.5
46.8

Adjusting spacer

Parts number

HA

38165
38165
38165
38165
38165

EL

1OV05
1OV06
1OV07
1OVOO
1OVO1

ADJUSTMENT OF SIDE BEARING PRE-LOAD
Type
-

-

- -

Side bearing pre-load

-

-

-

N-m (kg-m)

I

R200 (Strengthened), R200V (Strengthened)

1

0.3

- 1.4 (0.03 - 0.15)

Adjusting washer for adjustment of side bearing pre-load
Type

I

R200 (Strengthened), R200V (Strengthened)

1

Thickness mm

Parts number

Thickness rnm

Parts number

2.00
2.05
2.1 0

38453 N3100
38453 N3101
38453 N3102

2.35
2.40
2.45

38453 N3107
38453 N3108
38453 N3109

Adjusting washer

ADJUSTMENT OF TOTAL PRE-LOAD
R200 (Strengthened), R200V (Strengthened)

Type
Total pre-load with oil seal installed

N m (kg-m)

Drive gear backlash
Drive gear backlash

rnm
mm Final gear reduction ratio

1.4 - 3.1 (0.14 - 0.32)
0.1 - 0.15

4.083, 4.363

0.1 - 0.15

4.111

0.13 - 0.18

DRIVE SHAFT
FRONT

REAR

Z80T70C

T82CT82F
Final drive side

T70C

Joint type
Wheel side

Z80

Final drive side

110

Amount of grease

95.5 - 97.5
90.5 - 92.5

Wheel side
mm
Wheel side
I

Spider
assembly
(final drive side)

I1

T82F

Wheel side

T82C

Final drive side

Amount of grease

'wheel side

75 85

Final drive side
Boot length at installed

- 120

Final drive side

Joint type

Boot length at installed

mm

115 - 125

102 107

. Final drive side

-

95 97

Wheel side

I

'lamped
Parts number

number
00

1

39720 51E00

I

39720 51EO1

01

T7fP

Spider
assembly
(final drive and
wheel sides)

Stamped
number

Parts number

TYP~

39720 lOVl0
T82C
T82F

39720 1OV11
39720 10V12

Joint type
Wheel side

Final drive side
Joint type
Wheel side

Amount of grease

Amount of grease

-

Wheel side

75 85

Boot length at installed

I
Spider
assembly
(final drive side)

Stamped
number

1

Wheel side
Parts number

00

39720lOVlO

01

39720 1OV11

I

90.5

- 92.5

Boot length at
installed

g
Final drive side
mm Wheel side

- 94.9
- 98.0

TIGHTENING TORQUE

Type

Unit: N-m (ka-m)
Drive shaft to side flange (left side)

T82 F

92.9
96.0

Front

I

;

Drive shaft nut
T82CT82F

Rear

-

28 37
(2.8 3.8)

-

35 44

Drive shaft to side
flange
Z100D90F
Drive shaft nut

-

(6.5 8.0)

AXLE & SUSPENSION
WHEEL ALIGNMENT
-

1 Camber

I
1

[caster

-0°45'-t45'
6"35'+45'
-

r-

Front

King pin inclination

12"50'-t45'

Toe-in

mm

0 to In 2

Amount of side slip (Reference)

mm

In 5 to Out 5

Camber
Rear

-0°55'&30'

Toe-in

0 to Out 5.2

rnm

IAmount of side slip (Reference)(Only for HICAS)
WHEEL BEARING
-

T
I

Location
Applied model

N.m (kg-m)

N (kg)

In 5 to Out 5

-

Rear axle

2WD

With SUPER HICAS

Without SUPER HICAS
0.30

- 1.I7(0.03 - 0.12)
(NSK make)

0.520

- 1.882 (0.053 - 0.192)
(NTN make)

-

5.0 21 (0.5 - 2.2)
(NSK make)
2.95 - 10.5 (0.30 - 1.O8)
(NTN make)

Less than 15.9 (1.63)
(NSK make)
Less than 21.6 (2.21)
(NTN make)

Spring scale measurement

I

Front axle

Less than 2.45 (0.25)
(NSK make)
Less than 3.33 (0.34)
(NTN make)

Rotating torque

mm

Spring scale set position

End play

mm

l

0

BALL JOINT
Oscillating torque
Spring scale measurement (at cotter pin hole)
Sliding torque

End play

N (kg)

- 0.35)
7.95 - 55.3 (0.81 - 5.64)

N.m (kg-m)

0.50 - 3.40 (0.05 - 0.35)

N-m (kg-m)

mm

0.50 - 3.40 (0.05

0

-

GI

EG

SV31H U3dnS InoW!M

- 0'01)LC1 - 0'66
(0-zc

Sv31H u3dnS!!"

(0'01- 0'6)LO 1 - 6'88

6u!snoq alxe 01 Alquasse Jaq.Josqey30qs

inu 6u!x!4 yu!l ~addni u o ~I j
I

I
I

6u!snoy alxe 08 yu!l le~aie7

6upnoq alxe 01

(8'8- Z'L)98 - IL

pol 6u!g3auuo:, ~e JaMOl

(z.1 - 6-0111 - 6'8

Jaquaw uo!suadsns 01 yu!l IeJaiel

(0'6- O'L)88 - 69

JaMOl

Inu WOI qn4 laWM

(0'81- 0.12)PLZ - 902

Jaquraw uo!suadsns 04 u e JaMo7

(0'01 - 06'~)
0'86 - 0'8L

(0'61- 0'11)LZC - 801

I

Jaqwaw uo!suadsns 01 yu!l asjansuejl

I

ROAD WHEEL AND TIRE
TIRE

ROAD WHEEL
Wheel type
Runout limit
mm Vertcal

Aluminum

Steel

Less than 0.3

Less than 0.8

Less than 0.3

Less than 0.5

Dynamic
Less than 10 (one side)
I G.JIUUOL

imbalance
--

Wheel nut tightening torque
N.m (kg-m)

Less than 20

I

-

103 122
(10.5 12.5)

-

TIGHTENING TORQUE
Unit: N.m (kg-m)
Wheel nut

1

103 - 122 (10.5

- 12.5)

Tire size

Tire air pressure

kPa (kg/cm2)

1

Rear wheel

Front wheel

BRAKE
REAR DlSC BRAKE

BRAKING FORCE
More than 10% of axle
weight

Total braking force of rear wheels
Variation between right and left of
each wheel

Less than 8% of axle weight
More than 50% of vehicle
weight at inspected

Total braking force

Brake type

ADllVC

OPZ11V

9.3

11.5

Standard thickness (New)

mm

Wear limit of thickness

mm

Standard thickness (New)

mm

16

18

Disc rotor Wear limit of thickness

mm

14

16

Runout limit

mm

Less than 0.07

Brake
pad

Note: The braking force when both front wheels are locked up
can be considered to meet the total braking force.

2.0

PARKING BRAKE

BRAKE PEDAL
Free play (at pedal top surface)
mm

I

3

Brake pedal height
(from dash panel top surface)

I

Standard thickness (New)
Brake
lining

-

M/T: 163 173
IVT: 170 180

mm
Depressed pedal height under force
of 490 N (50 kg)
(from dash panel top surface)
mm

DS17HD

Type

- 11

3.0

mrn
Wear limit of thickness

1.5

mm

M/T: More than 85
A . More than 90

Clearance between the edge of stop
lamp switch screw and pedal stopper
mm

Drum

I
I

I
I

Standard inner diameter
(New)
mm I
.
.

172 dia.

Wear limit of inner diameter
mm

173 dia.

Operating stroke
[under force of 196 N (20 kg)]

5 - 7 notches
I

Maximum stroke

CHECK VALVE

19 notches

Number of notches when brake warning
lamp turns on

I

Vacuum leakage
Within 1.3 kPa (10 mmHg) of
[at vacuum Of 66'7 kPa
vacuum for 15 seconds
(-500 mmHg)]

Within 1 notch

TIGHTENING TORQUE
Unit: N.m (kg-m)

BRAKE BOOSTER

Master cylinder fixing nut

Vacuum leakage
[at vacuum of 66.7 kPa (-500
mmHg)l

Within 3.3 kPa (25 mmHg) of
vacuum for 15 seconds

Input rod standard length at installed
mm

140

FRONT DlSC BRAKE
Brake type

I AD25VB I CUSVD

[OPZ~~VC

1

1

Standard thickness
Wear limit of
thickness
Standard thickness
mm

22

1

26

Disc rotor Wear limit of
thickness
Runout limit

Less than 0.07

30

Front caliper mounting bolt
Brake tube flare nut

I

12 - 14 (1.2

- 1.5)
--

-

152 154 (15.5 - 15.8)
15 - 17 (1.5

- 1.8)

-

STEERING
STEERING GEAR

STEERING WHEEL
0

Steering wheel end play

rnm

Steering wheel free play

rnm1

Amount of steering gear housing movement

mm

--

I

Steering gear type

PR29, PR26AD, PR26AF

-

0-35

Rack neutral position "L"

68.5

mm

Within 22

STEERING ANGLE
Inner wheel

42"

Outer wheel

33"

STEERING COLUMN
Steering column length "L"

STC0101D

610

mm

Primary tightening torque
Retainer
adjustment

Re-tightening torque after loosening
once
N.m (kg-m)

88

5.0 5.8

-

8T

--

Rs

5.0 5.8
(0.5 0.6)

MA
Range within
ill.5 mm from

STEERING LINKAGE

Less than 98.0
(10.0)

Rack sliding
force

Steering gear type

(30.0)
Oscillating torque
N m (kg-m)

Tie-rod ball joint
outer socket

-

Spring scale measurement
(at stud bolt hole)
N (kg)

6.48 64.6
(0.66 6.59)

Sliding torque

0.30 - 2.94

-

Tie-rod length "L"

OIL PUMP
8.822: (90)
(Without HICAS)
7.842:; (80)
(With HICAS)

MPa (kg/cm2)

Oscillating torque

1.O

- 7.8

Spring scale measurement (at
arrow position in figure below)
N (kg)

19.0 152
(1.90 15.5)

End play

mm

Less than 0.2

mm

173.3

-

Less than 147

variations

Maximum oil pump pressure

End play

Tie-rod ball joint
inner socket

Full range

0.30 - 2.94
(0.03 0.30)

STEERING FLUID
Fluid capacity

P

I

Approx. 1.0

TIGHTENING TORQUE
Unit: N.m (kq-m)

-

Steering gear to steering column

89 - 91 (9.0 - 9.3)
24 - 29 (2.4 - 3.0)

Outer socket to steering knuckle

30 - 39 (3.0 - 4.0)

Tie-rod lock nut

79 98 (8.0

Steering wheel nut

30 39 (3.0 4.0)

Steering gear to suspension member

-

Large

32 - 42 (3.2 - 4.3)

Small

14 17 (1.4 1.8)

Oil pump fixing bolt
Hydraulic tube (high pressure side) to oil
Pump
Hydraulic tube to
steering gear

- 10.0)

/

-

-

-

50 - 68 (5.0 7.0)

-

High pressure side

15 24 (1.5 - 2.5)

Low pressure side

28 - 39 (2.8 - 4.0)

EL

SUPER HlCAS
POWER CYLINDER
-

Power cylinder ball
joint

-

Oscillating torque
N.m (kg-m)

0.98 7.80
(0.1 0.8)

-

End play

POWER CYLINDER LOWER LINK
Power cylinder lower link length

mm

1

290.4t1.0

mm

1

3.6k0.1

/

Lock nut

--

--

Clearance at power cylinder stroke

---

-

--

-

--

TIGHTENING TORQUE
Unit: N-m (kg-m)
84.4 - 107
(8.60 11.O)

HlCAS actuator assembly fixing bolt
Outer link to axle housing

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46 59 (4.6 6.1)
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