Indicator Light Circuit
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B59175
TVIP ECU
IND
25
3A
W–B
T3
IND
GND
R–W
J7
J/C
RH J/B
19 11
A
IG
2
1
S4
Security Indicator
W–B
3A
B59187
Security Indicator
05–708 –DIAGNOSTICS TOYOTA VEHICLE INTRUSION PROTECTION
SYSTEM
873Author: Date:
2004 COROLLA (RM1037U)
INDICATOR LIGHT CIRCUIT
CIRCUIT DESCRIPTION
When the TVIP system is preparing to be set, this circuit lights up the indicator light. When the system has
been set, it continually turns the indicator light on for 0.2 seconds and turns it off for 1.8 seconds, thus the
indicator light blinks.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK SECURITY INDICATOR LIGHT
(a) Remove the security indicator.
(b) Check the indicator light, as shown in the illustration and
table.
Standard:
Measuring condition Operation
Battery positive (+) ⇔ Terminal 2
Battery negative (–) ⇔ Terminal 1 Indicator light comes on
NG REPLACE SECURITY INDICATOR LIGHT
OK
057RY–01
B52239
B59192 B59594
Security Indicator
TVIP ECU
(Wire Harness Side)
T3
S4
(Wire Harness Side)
IND
IND (T3–25)
B59192
Security IndicatorS4
(Wire Harness Side)
GND
–DIAGNOSTICS TOYOTA VEHICLE INTRUSION PROTECTION
SYSTEM 05–709
874Author: Date:
2004 COROLLA (RM1037U)
2 CHECK WIRE HARNESS (TVIP ECU ⇔ SECURITY INDICATOR)
(a) Disconnect the TVIP ECU and security indicator connec-
tors.
(b) Check the continuity between the terminals of the TVIP
ECU connector and security indicator connector, as
shown in the illustration and table.
Standard:
Symbols (Terminal No.)
(TVIP ECU ⇔ Security indicator) Specified condition
IND (T3–25) ⇔IND (S4–2) Continuity
NG REPAIR OR REPLACE WIRE HARNESS AND
CONNECTOR
OK
3 CHECK WIRE HARNESS (SECURITY INDICATOR ⇔ BODY GROUND)
(a) Disconnect the security indicator connector.
(b) Check the continuity between the terminal of the security
indicator connector and body ground, as shown in the il-
lustration and table.
Standard:
Symbol (Terminal No.)
(Security indicator ⇔ Body ground) Specified condition
GND (S4–1) ⇔Body ground Continuity
NG REPAIR OR REPLACE WIRE HARNESS AND
CONNECTOR
OK
CHECK AND REPLACE TVIP ECU (See page 01–30)
