Craftsman Canobd Diagnostic Tool Owners Manual 87702 _E_

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Table of Contents

i Craftsman 87702

INTRODUCTION

WHAT IS OBD? ........................................................................ 1

YOU CAN DO IT! .............................................................................. 2

SAFETY PRECAUTIONS

SAFETY FIRST! ........................................................................ 3

ABOUT THE DIAGNOSTIC TOOL

VEHICLES COVERED ............................................................. 5

BATTERY REPLACEMENT ..................................................... 6

DIAGNOSTIC TOOL CONTROLS

CONTROLS AND INDICATORS ............................................. 7

DISPLAY FUNCTIONS ............................................................ 9

ONBOARD DIAGNOSTICS

COMPUTER ENGINE CONTROLS ......................................... 11

DIAGNOSTIC TROUBLE CODES (DTCs) .............................. 16

OBD2 MONITORS .................................................................... 19

PREPARATION FOR TESTING

PRELIMINARY VEHICLE DIAGNOSTIC WORKSHEET ......... 28

BEFORE YOU BEGIN .............................................................. 31

VEHICLE SERVICE MANUALS ............................................... 32

USING THE DIAGNOSTIC TOOL

CODE RETRIEVAL PROCEDURE .......................................... 33

VIEWING ENHANCED DTCs .................................................. 39

VIEWING ABS DTCs ............................................................... 47

ERASING DIAGNOSTIC TROUBLE CODES (DTCs).............. 49

ABOUT REPAIRSOLUTIONS® ............................................... 50

I/M READINESS TESTING ...................................................... 51

ADDITIONAL FUNCTIONS

PERFORMING A SYSTEM VOLTAGE CHECK ...................... 57

VIEWING VEHICLE INFORMATION ....................................... 58

USING THE DTC LIBRARY ..................................................... 60

VIEWING THE FIRMWARE VERSION .................................... 62

ADJUSTMENTS AND SETTINGS ........................................... 62

VIEWING DTCs IN THE TOOL’S MEMORY ........................... 65

GENERIC (GLOBAL) OBD2 PID LIST ............................................ 66

VEHICLE APPLICATIONS - ABS

VEHICLE APPLICATIONS – MAKES COVERED ................... 71

GLOSSARY

INTRODUCTION ...................................................................... 72

GLOSSARY OF TERMS AND ABBREVIATIONS ................... 72

WARRANTY AND SERVICING

CRAFTSMAN TWO YEAR FULL WARRANTY ....................... 77

REPLACEMENT PARTS ......................................................... 77

Introduction

WHAT IS OBD?

Craftsman 87702 1

WHAT IS OBD?

The Enhanced CanOBD2 Diagnostic Tool is designed to work on

all OBD2 compliant vehicles. All 1996 and newer vehicles (cars,

light trucks and SUVs) sold in the United States are OBD2

compliant.

One of the most exciting improvements in the

automobile industry was the addition of on-

board diagnostics (OBD) on vehicles, or in more

basic terms, the computer that activates the

vehicle’s “CHECK ENGINE” light. OBD1 was

designed to monitor manufacturer-specific

systems on vehicles built from 1981 to 1995.

Then came the development of OBD2, which is

on all 1996 and newer vehicles sold in the U.S. Like its predecessor,

OBD2 was adopted as part of a government mandate to lower vehicle

emissions. But what makes OBD2 unique is its universal application for

all late model cars and trucks - domestic and import. This sophisticated

program in the vehicle’s main computer system is designed to detect

failures in a range of systems, and can be accessed through a universal

OBD2 port, which is usually found under the dashboard. For all OBD

systems, if a problem is found, the computer turns on the “CHECK

ENGINE” light to warn the driver, and sets a Diagnostic Trouble Code

(DTC) to identify where the problem occurred. A special diagnostic tool,

such as the Enhanced CanOBD2 Diagnostic Tool, is required to retrieve

these codes, which consumers and professionals use as a starting point

for repairs.

The Enhanced CanOBD2 Diagnostic Tool provides the additional ability

to retrieve enhanced DTCs from most Chrysler/Jeep, Ford/Mazda,

GM/Isuzu, Honda/Acura and Toyota/Lexus vehicles, as well as Anti-

Lock Brake System (ABS) DTCs and vehicle information. The types of

enhanced data available depends on the vehicle make.

To learn more about vehicle Computer Control Systems and

OBD2, see COMPUTER ENGINE CONTROLS on page 15.

You Can Do It!

EASY TO USE - EASY TO VIEW - EASY TO DEFINE

2 Craftsman 87702

Easy To Use . . . .

 Connect the Diagnostic Tool to the

vehicle’s test connector.

 Turn the ignition key "On.”

 The Diagnostic Tool automatically links

to the vehicle’s computer.

Easy To View . . . .

 The Diagnostic Tool retrieves stored

codes, Freeze Frame data and System

Status.

 Codes, I/M Monitor Status and Freeze

Frame data are displayed on the

Diagnostic Tool’s LCD display screen.

System Status is indicated by LED

indicators.

Easy To Define . . . .

 Read code definitions from the Diagnostic

Tool’s LCD display.

 View Freeze Frame data.

Safety Precautions

SAFETY FIRST!

Craftsman 87702 3

SAFETY FIRST!

This manual describes common test procedures used

by experienced service technicians. Many test procedures

require precautions to avoid accidents that can result in

personal injury, and/or damage to your vehicle or test

equipment. Always read your vehicle's service manual and

follow its safety precautions before and during any test or

service procedure. ALWAYS observe the following general

safety precautions:

When an engine is running, it produces carbon monoxide,

a toxic and poisonous gas. To prevent serious injury or

death from carbon monoxide poisoning, operate the

vehicle ONLY in a well-ventilated area.

To protect your eyes from propelled objects as well as hot

or caustic liquids, always wear approved safety eye

protection.

When an engine is running, many parts (such as the

coolant fan, pulleys, fan belt etc.) turn at high speed. To

avoid serious injury, always be aware of moving parts.

Keep a safe distance from these parts as well as other

potentially moving objects.

Engine parts become very hot when the engine is running.

To prevent severe burns, avoid contact with hot engine

parts.

Before starting an engine for testing or troubleshooting,

make sure the parking brake is engaged. Put the

transmission in park (for automatic transmission) or

neutral (for manual transmission). Block the drive wheels

with suitable blocks.

Connecting or disconnecting test equipment when the

ignition is ON can damage test equipment and the

vehicle's electronic components. Turn the ignition OFF

before connecting the Diagnostic Tool to or disconnecting

the Diagnostic Tool from the vehicle’s Data Link Connector

(DLC).

To avoid personal injury, instrument damage and/or

damage to your vehicle; do not use the OBD2 Diagnostic

Tool before reading this manual.

N

L

D

R

P

Safety Precautions

SAFETY FIRST!

4 Craftsman 87702

To prevent damage to the on-board computer when taking

vehicle electrical measurements, always use a digital

multimeter with at least 10 MegOhms of impedance.

Fuel and battery vapors are highly flammable. To prevent

an explosion, keep all sparks, heated items and open

flames away from the battery and fuel / fuel vapors. DO

NOT SMOKE NEAR THE VEHICLE DURING TESTING.

Don't wear loose clothing or jewelry when working on an

engine. Loose clothing can become caught in the fan,

pulleys, belts, etc. Jewelry is highly conductive, and can

cause a severe burn if it makes contact between a power

source and ground.

About the Diagnostic Tool

VEHICLES COVERED

Craftsman 87702 5

VEHICLE EMISSION CONTROL INFORMATION

VEHICLE

MANUFACTURER

OBD II

CERTIFIED

ENGINE FAMILY EFN2.6YBT2BA

DISPLACEMENT 2.6L

THIS VEHICLE CONFORMS TO U.S. EPA AND STATE

OF CALIFORNIA REGULATIONS APPLICABLE TO

1999 MODEL YEAR NEW TLEV PASSENGER CARS.

REFER TO SERVICE MANUAL FOR ADDITIONAL INFORMATION

TUNE-UP CONDITIONS: NORMAL OPERATING ENGINE TEMPERATURE,

ACCESSORIES OFF, COOLING FAN OFF, TRANSMISSION IN NEUTRAL

SPARK PLUG

TYPE NGK BPRE-11

GAP: 1.1MM

CATALYST

EXHAUST EMISSIONS STANDARDS STANDARD CATEGORY

CERTIFICATION

IN-USE

TLEV

TLEV INTERMEDIATE

OBD II

CERTIFIED

VEHICLES COVERED

The Enhanced CanOBD2 Diagnostic Tool is designed to work on all

OBD2 compliant vehicles. All 1996 and newer vehicles (cars and light

trucks) sold in the United States are OBD2 compliant.

Federal law requires that all 1996 and newer cars and light

trucks sold in the United States must be OBD2 compliant; this

includes all Domestic, Asian and European vehicles.

Some 1994 and 1995 vehicles are OBD2 compliant. To find out if a

1994 or 1995 vehicle is OBD2 compliant, check the following:

1. The Vehicle Emissions Control Information (VECI) Label. This

label is located under the hood or by the radiator of most vehicles. If

the vehicle is OBD2 compliant, the label will state “OBD II

Certified.”

2. Government Regulations require that all

OBD2 compliant vehicles must have a

“common” sixteen-pin Data Link

Connector (DLC).

Some 1994 and 1995 vehicles have 16-pin connectors but are

not OBD2 compliant. Only those vehicles with a Vehicle

Emissions Control Label stating “OBD II Certified” are OBD2

compliant.

Data Link Connector (DLC) Location

The 16-pin DLC is usually

located under the instrument

panel (dash), within 12 inches

(300 mm) of center of the panel,

on the driver’s side of most

vehicles. It should be easily

accessible and visible from a

kneeling position outside the

vehicle with the door open.

12345678

9 10111213141516

NEAR

CENTER

OF DASH

BEHIND

ASHTRAY

LEFT CORNER

OF DASH

About the Diagnostic Tool

BATTERY REPLACEMENT

6 Craftsman 87702

On some Asian and European vehicles the DLC is located

behind the “ashtray” (the ashtray must be removed to access it)

or on the far left corner of the dash. If the DLC cannot be

located, consult the vehicle’s service manual for the location.

BATTERY REPLACEMENT

Replace batteries when the battery symbol is visible on display

and/or the 3 LEDS are all lit and no other data is visible on screen.

1. Locate the battery cover on the back of the Diagnostic Tool.

2. Slide the battery cover off (use your fingers).

3. Replace batteries with two AA-size batteries (for longer life, use

Alkaline-type batteries).

4. Reinstall the battery cover on the back of the Diagnostic Tool.

Adjustments After Battery Installation

The first time the unit is turned on, you must select the desired display

language (English, French or Spanish) and unit of measurement (USA

or Metric) as follows:

1. Press the POWER/LINK button to

turn the Diagnostic Tool “ON.”

 The Select Language screen

displays.

2. Use the DOWN button to highlight

the desired display language.

3. When the desired display language is

selected, press the ENTER button to

confirm your selection.

 The Select Unit screen displays.

4. Use the DOWN button to highlight

the desired unit of measurement.

5. When the desired unit of measurement is selected, press the

ENTER button to confirm your selection.

After the initial language and unit of measurement selections

are performed, these, as well as other settings, can be

changed as desired. Proceed to “ADJUSTMENTS AND

SETTINGS” on page 60 for further instructions.

Diagnostic Tool Controls

CONTROLS AND INDICATORS

Craftsman 87702 7

CONTROLS AND INDICATORS

Figure 1. Controls and Indicators

See Figure 1 for the locations of items 1 through 12, below.

1. ERASE button - Erases Diagnostic Trouble Codes (DTCs),

and “Freeze Frame” data from your vehicle’s computer, and resets

Monitor status.

2. ENTER button - When in Menu mode, confirms the selected

option or value.

3. DTC button - Displays the DTC View screen and/or scrolls the

LCD display to view DTCs.

4. POWER/LINK button - When the Diagnostic Tool IS NOT

connected to a vehicle, turns the Diagnostic Tool “On” and “Off”.

When the Diagnostic Tool is connected to a vehicle, links the

Diagnostic Tool to the vehicle’s PCM to retrieve diagnostic data from

the computer’s memory.

To turn the Diagnostic Tool "On", you must press and hold the

POWER/LINK button for approximately 3 seconds.

5. ABS button - When pressed, displays the ABS DTCs menu.

6. M button – When pressed while linked to a vehicle, displays the

“Main Menu.”

Diagnostic Tool Controls

CONTROLS AND INDICATORS

8 Craftsman 87702

7. DOWN button - When in MENU mode, scrolls DOWN through

the menu and submenu selection options. When retrieving and

viewing DTCs, scrolls down through the current display screen to

display any additional data.

8. GREEN LED - Indicates that all engine systems are running

normally (all Monitors on the vehicle are active and performing their

diagnostic testing, and no DTCs are present).

9. YELLOW LED - Indicates there is a possible problem. A “Pending”

DTC is present and/or some of the vehicle’s emission monitors have

not run their diagnostic testing.

10. RED LED - Indicates there is a problem in one or more of the

vehicle’s systems. The red LED is also used to show that DTC(s)

are present. DTCs are shown on the Diagnostic Tool’s LCD display.

In this case, the Malfunction Indicator (“Check Engine”) lamp on the

vehicle’s instrument panel will light steady on.

11. LCD Display - Displays settings Menu and submenus, test results,

Diagnostic Tool functions and Monitor status information. See

DISPLAY FUNCTIONS, on next page, for more details.

12. CABLE - Connects the Diagnostic Tool to the vehicle’s Data Link

Connector (DLC).

Diagnostic Tool Controls

DISPLAY FUNCTIONS

Craftsman 87702 9

DISPLAY FUNCTIONS

Figure 2. Display Functions

See Figure 2 for the locations of items 1 through 14, below.

1. I/M MONITOR STATUS field - Identifies the I/M Monitor status area.

2. Monitor icons - Indicate which Monitors are supported by the

vehicle under test, and whether or not the associated Monitor has

run its diagnostic testing (Monitor status). When a Monitor icon is

solid, it indicates that the associated Monitor has completed its

diagnostic testing. When a Monitor icon is flashing, it indicates that

the vehicle supports the associated Monitor, but the Monitor has not

yet run its diagnostic testing.

3. Vehicle icon - Indicates whether or not the Diagnostic Tool is

being properly powered through the vehicle’s Data Link Connector

(DLC). A visible icon indicates that the Diagnostic Tool is being

powered through the vehicle’s DLC connector.

4. Link icon - Indicates whether or not the Diagnostic Tool is

communicating (linked) with the vehicle’s on-board computer. When

visible, the Diagnostic Tool is communicating with the computer. If

the Link icon is not visible, the Diagnostic Tool is not communicating

with the computer.

5. Computer icon - When this icon is visible it indicates that the

Diagnostic Tool is linked to a personal computer. Optional software

is available that makes it possible to upload retrieved data to a

personal computer.

6. Diagnostic Tool Internal Battery icon - When visible, indicates

the Diagnostic Tool batteries are “low” and should be replaced. If the

batteries are not replaced when the battery symbol is "on", all 3

LEDs will light up as a last resort indicator to warn you that the

batteries need replacement. No data will be displayed on screen

when all 3 LEDs are lit.

Diagnostic Tool Controls

DISPLAY FUNCTIONS

10 Craftsman 87702

7. DTC Display Area - Displays the Diagnostic Trouble Code (DTC)

number. Each fault is assigned a code number that is specific to that

fault.

8. Test Data Display Area - Displays DTC definitions, Freeze Frame

data, and other pertinent test information messages.

9. FREEZE FRAME icon - Indicates that there is Freeze Frame data

from “Priority Code” (Code #1) stored in the vehicle’s computer

memory.

10. PERMANENT icon - Indicates the currently displayed DTC is a

“Permanent” code.

11. ABS icon – Indicates the currently displayed DTC is an “ABS” code.

12. PENDING icon - Indicates the currently displayed DTC is a

“Pending” code.

13. MIL icon - Indicates the status of the Malfunction Indicator Lamp

(MIL). The MIL icon is visible only when a DTC has commanded the

MIL on the vehicle’s dashboard to light.

14. Code Number Sequence - The Diagnostic Tool assigns a

sequence number to each DTC that is present in the computer’s

memory, starting with “01.” This number indicates which code is

currently displayed. Code number “01” is always the highest priority

code, and the one for which “Freeze Frame” data has been stored.

If “01” is a “Pending” code, there may or may not be

“Freeze Frame” data stored in memory.

15. Code Enumerator - Indicates the total number of codes retrieved

from the vehicle’s computer.

Onboard Diagnostics

COMPUTER ENGINE CONTROLS

Craftsman 87702 11

COMPUTER ENGINE CONTROLS

The Introduction of Electronic Engine Controls

As a result of increased air pollution (smog) in large cities,

such as Los Angeles, the California Air Resources Board

(CARB) and the Environmental Protection Agency (EPA)

set new regulations and air pollution standards to deal with

the problem. To further complicate matters, the energy crisis of

the early 1970s caused a sharp increase in fuel prices over a

short period. As a result, vehicle manufacturers were not only

required to comply with the new emissions standards, they also

had to make their vehicles more fuel-efficient. Most vehicles

were required to meet a miles-per-gallon (MPG) standard set by the U.S.

Federal Government.

Precise fuel delivery and spark timing are needed to reduce vehicle

emissions. Mechanical engine controls in use at the time (such as

ignition points, mechanical spark advance and the carburetor)

responded too slowly to driving conditions to properly control fuel

delivery and spark timing. This made it difficult for vehicle manufacturers

to meet the new standards.

A new Engine Control System had to be designed and integrated with

the engine controls to meet the stricter standards. The new system had

to:

 Respond instantly to supply the proper mixture of air and fuel for any

driving condition (idle, cruising, low-speed driving, high-speed

driving, etc.).

 Calculate instantly the best time to “ignite” the air/fuel mixture for

maximum engine efficiency.

 Perform both these tasks without affecting vehicle performance or

fuel economy.

Vehicle Computer Control Systems can perform millions of calculations

each second. This makes them an ideal substitute for the slower

mechanical engine controls. By switching from mechanical to electronic

engine controls, vehicle manufacturers are able to control fuel delivery

and spark timing more precisely. Some newer Computer Control

Systems also provide control over other vehicle functions, such as

transmission, brakes, charging, body, and suspension systems.

Electronic Computer Control Systems make it possible

for vehicle manufacturers to comply with the tougher

emissions and fuel efficiency standards mandated by

State and Federal Governments.

Onboard Diagnostics

COMPUTER ENGINE CONTROLS

12 Craftsman 87702

The Basic Engine Computer Control System

The on-board computer is the heart of the Computer

Control System. The computer contains several programs

with preset reference values for air/fuel ratio, spark or

ignition timing, injector pulse width, engine speed, etc.

Separate values are provided for various driving conditions,

such as idle, low speed driving, high-speed driving, low load,

or high load. The preset reference values represent the ideal

air/fuel mixture, spark timing, transmission gear selection,

etc., for any driving condition. These values are programmed

by the vehicle manufacturer, and are specific to each vehicle model.

Most on-board computers are located inside the vehicle behind the dashboard,

under the passenger’s or driver’s seat, or behind the right kick panel. However,

some manufacturers may still position it in the engine compartment.

Vehicle sensors, switches, and actuators are located throughout the

engine, and are connected by electrical wiring to the on-board computer.

These devices include oxygen sensors, coolant temperature sensors,

throttle position sensors, fuel injectors, etc. Sensors and switches are

input devices. They provide signals representing current engine

operating conditions to the computer. Actuators are output devices. They

perform actions in response to commands received from the computer.

The on-board computer receives information inputs from sensors and

switches located throughout the engine. These devices monitor critical

engine conditions such as coolant temperature, engine speed, engine

load, throttle position, air/fuel ratio etc.

The computer compares the values received from these sensors with its

preset reference values, and makes corrective actions as needed so

that the sensor values always match the preset reference values for the

current driving condition. The computer makes adjustments by

commanding other devices such as the fuel injectors, idle air control,

EGR valve or Ignition Module to perform these actions.

The Computer Control System consists of an on-board

computer and several related control devices (sensors,

switches, and actuators).

OUTPUT DEVICES

Fuel Injectors

Idle Air Control

EGR Valve

Ignition Module

On-Board

Computer

INPUT DEVICES

Coolant Temperature Sensor

Throttle Position Sensor

Fuel Injectors

INPUT DEVICES

Oxygen Sensors

TYPICAL COMPUTER

CONTROL SYSTEM

Onboard Diagnostics

COMPUTER ENGINE CONTROLS

Craftsman 87702 13

Vehicle operating conditions are constantly changing. The computer

continuously makes adjustments or corrections (especially to the air/fuel

mixture and spark timing) to keep all the engine systems operating

within the preset reference values.

On-Board Diagnostics - First Generation (OBD1)

Beginning in 1988, California’s Air Resources Board

(CARB), and later the Environmental Protection Agency (EPA)

required vehicle manufacturers to include a self-diagnostic

program in their on-board computers. The program would be

capable of identifying emissions-related faults in a system. The

first generation of Onboard Diagnostics came to be known as

OBD1.

OBD1 is a set of self-testing and diagnostic instructions

programmed into the vehicle’s on-board computer. The

programs are specifically designed to detect failures in the sensors,

actuators, switches and wiring of the various vehicle emissions-related

systems. If the computer detects a failure in any of these components or

systems, it lights an indicator on the dashboard to alert the driver. The

indicator lights only when an emissions-related problem is detected.

The computer also assigns a numeric code for each specific problem

that it detects, and stores these codes in its memory for later retrieval.

These codes can be retrieved from the computer’s memory with the use

of a “Diagnostic Tool” or a “Scan Tool.”

On-Board Diagnostics - Second Generation (OBD2)

In addition to performing all the

functions of the OBD1 System, the

OBD2 System has been enhanced with

new Diagnostic Programs. These

programs closely monitor the functions

of various emissions-related compo-

nents and systems (as well as other

systems) and make this information readily available (with

the proper equipment) to the technician for evaluation.

The California Air Resources Board (CARB) conducted

studies on OBD1 equipped vehicles. The information that was

gathered from these studies showed the following:

 A large number of vehicles had deteriorating or degraded

emissions-related components. These components were

causing an increase in emissions.

With the exception of some 1994 and 1995 vehicles,

most vehicles from 1982 to 1995 are equipped with

some type of first generation On-Board Diagnostics.

The OBD2 System is

an enhancement of the

OBD1 System.

Onboard Diagnostics

COMPUTER ENGINE CONTROLS

14 Craftsman 87702

 Because OBD1 systems only detect failed components, the

degraded components were not setting codes.

 Some emissions problems related to degraded components only

occur when the vehicle is being driven under a load. The emission

checks being conducted at the time were not performed under

simulated driving conditions. As a result, a significant number of

vehicles with degraded components were passing Emissions Tests.

 Codes, code definitions, diagnostic connectors, communication

protocols and emissions terminology were different for each

manufacturer. This caused confusion for the technicians working on

different make and model vehicles.

To address the problems made evident by this study, CARB and the

EPA passed new laws and standardization requirements. These laws

required that vehicle manufacturers to equip their new vehicles with

devices capable of meeting all of the new emissions standards and

regulations. It was also decided that an enhanced on-board diagnostic

system, capable of addressing all of these problems, was needed. This

new system is known as “On-Board Diagnostics Generation Two

(OBD2).” The primary objective of the OBD2 system is to comply with

the latest regulations and emissions standards established by CARB

and the EPA.

The Main Objectives of the OBD2 System are:

 To detect degraded and/or failed emissions-related components or

systems that could cause tailpipe emissions to exceed by 1.5 times

the Federal Test Procedure (FTP) standard.

 To expand emissions-related system monitoring. This includes a set

of computer run diagnostics called Monitors. Monitors perform

diagnostics and testing to verify that all emissions-related

components and/or systems are operating correctly and within the

manufacturer’s specifications.

 To use a standardized Diagnostic Link Connector (DLC) in all

vehicles. (Before OBD2, DLCs were of different shapes and sizes.)

 To standardize the code numbers, code definitions and language

used to describe faults. (Before OBD2, each vehicle manufacturer

used their own code numbers, code definitions and language to

describe the same faults.)

 To expand the operation of the Malfunction Indicator Lamp (MIL).

 To standardize communication procedures and protocols between

the diagnostic equipment (Scan Tools, Code Readers, etc.) and the

vehicle’s on-board computer.

OBD2 Terminology

The following terms and their definitions are related to OBD2 systems.

Read and reference this list as needed to aid in the understanding of

OBD2 systems.

Onboard Diagnostics

COMPUTER ENGINE CONTROLS

Craftsman 87702 15

 Powertrain Control Module (PCM) - The PCM is the OBD2

accepted term for the vehicle’s “on-board computer.” In addition

to controlling the engine management and emissions systems,

the PCM also participates in controlling the powertrain

(transmission) operation. Most PCMs also have the ability to

communicate with other computers on the vehicle (ABS, ride

control, body, etc.).

 Monitor - Monitors are “diagnostic routines” programmed into the

PCM. The PCM utilizes these programs to run diagnostic tests, and

to monitor operation of the vehicle’s emissions-related components

or systems to ensure they are operating correctly and within the

vehicle’s manufacturer specifications. Currently, up to fifteen

Monitors are used in OBD2 systems. Additional Monitors will be

added as the OBD2 system is further developed.

Not all vehicles support all fifteen Monitors.

 Enabling Criteria - Each Monitor is designed to test and monitor

the operation of a specific part of the vehicle’s emissions system

(EGR system, oxygen sensor, catalytic converter, etc.). A specific

set of “conditions” or “driving procedures” must be met before the

computer can command a Monitor to run tests on its related system.

These “conditions” are known as “Enabling Criteria.” The

requirements and procedures vary for each Monitor. Some Monitors

only require the ignition key to be turned “On” for them to run and

complete their diagnostic testing. Others may require a set of

complex procedures, such as, starting the vehicle when cold,

bringing it to operating temperature, and driving the vehicle under

specific conditions before the Monitor can run and complete its

diagnostic testing.

 Monitor Has/Has Not Run - The terms “Monitor has run” or

“Monitor has not run” are used throughout this manual. “Monitor

has run,” means the PCM has commanded a particular Monitor to

perform the required diagnostic testing on a system to ensure the

system is operating correctly (within factory specifications). The term

“Monitor has not run” means the PCM has not yet commanded a

particular Monitor to perform diagnostic testing on its associated part

of the emissions system.

 Trip - A Trip for a particular Monitor requires that the vehicle is

being driven in such a way that all the required “Enabling Criteria”

for the Monitor to run and complete its diagnostic testing are met.

The “Trip Drive Cycle” for a particular Monitor begins when the

ignition key is turned “On.” It is successfully completed when all the

“Enabling Criteria” for the Monitor to run and complete its diagnostic

testing are met by the time the ignition key is turned “Off.” Since

each of the eleven monitors is designed to run diagnostics and

testing on a different part of the engine or emissions system, the

“Trip Drive Cycle” needed for each individual Monitor to run and

complete varies.

Onboard Diagnostics

DIAGNOSTIC TROUBLE CODES (DTCs)

16 Craftsman 87702

 OBD2 Drive Cycle - An OBD2 Drive Cycle is an extended set of

driving procedures that takes into consideration the various types of

driving conditions encountered in real life. These conditions may

include starting the vehicle when it is cold, driving the vehicle at a

steady speed (cruising), accelerating, etc. An OBD2 Drive Cycle

begins when the ignition key is turned “On” (when cold) and ends

when the vehicle has been driven in such a way as to have all the

“Enabling Criteria” met for all its applicable Monitors. Only those

trips that provide the Enabling Criteria for all Monitors applicable to

the vehicle to run and complete their individual diagnostic tests

qualify as an OBD2 Drive Cycle. OBD2 Drive Cycle requirements

vary from one model of vehicle to another. Vehicle manufacturers

set these procedures. Consult your vehicle’s service manual for

OBD2 Drive Cycle procedures.

Do not confuse a “Trip” Drive Cycle with an OBD2 Drive Cycle. A

“Trip” Drive Cycle provides the “Enabling Criteria” for one specific

Monitor to run and complete its diagnostic testing. An OBD2 Drive

Cycle must meet the “Enabling Criteria” for all Monitors on a

particular vehicle to run and complete their diagnostic testing.

 Warm-up Cycle - Vehicle operation after an engine off period where

engine temperature rises at least 40°F (22°C) from its temperature

before starting, and reaches at least 160°F (70°C). The PCM uses

warm-up cycles as a counter to automatically erase a specific code

and related data from its memory. When no faults related to the

original problem are detected within a specified number of warm-up

cycles, the code is erased automatically.

DIAGNOSTIC TROUBLE CODES (DTCs)

Diagnostic Trouble Codes (DTCs) are

meant to guide you to the proper

service procedure in the vehicle’s

service manual. DO NOT replace parts

based only on DTCs without first

consulting the vehicle’s service manual

for proper testing procedures for that

particular system, circuit or component.

DTCs are alphanumeric codes that are used to identify a

problem that is present in any of the systems that are

monitored by the on-board computer (PCM). Each trouble

code has an assigned message that identifies the circuit,

component or system area where the problem was found.

OBD2 diagnostic trouble codes are made up of five characters:

 The 1st character is a letter (B, C, P or U). It identifies the

“main system” where the fault occurred (Body, Chassis, Powertrain,

or Network).

 The 2nd character is a numeric digit (0 thru 3). It identifies the

“type” of code (Generic or Manufacturer-Specific).

Generic DTCs are codes that are used by all vehicle manu-

facturers. The standards for generic DTCs, as well as their

definitions, are set by the Society of Automotive Engineers (SAE).

Diagnostic Trouble

Codes (DTCs) are

codes that identify a

specific problem area.

Onboard Diagnostics

DIAGNOSTIC TROUBLE CODES (DTCs)

Craftsman 87702 17

Manufacturer-Specific DTCs are codes that are controlled by the

vehicle manufacturers. The Federal Government does not require

vehicle manufacturers to go beyond the standardized generic

DTCs in order to comply with the new OBD2 emissions standards.

However, manufacturers are free to expand beyond the

standardized codes to make their systems easier to diagnose.

 The 3rd character is a letter or a numeric digit (0 thru 9, A thru F).

It identifies the specific system or sub-system where the problem is

located.

 The 4th and 5th characters are letters or numeric digits (0 thru 9, A

thru F). They identify the section of the system that is malfunctioning.

P 0 2 0 1

B

C

P

U

-

-

-

-

Body

Chassis

Powertrain

Network

-

-

-

-

Generic

Manufacturer Specific

Generic ("P" Codes) and Manufacturer

Specific ("B", "C" and "U" Codes)

Includes both Generic and Manufacturer

Specific Codes

0

1

2

3

Identifies what section of the system

is malfunctioning

Identifies the system where the problem is

located. "P" Code systems are listed below.

"B", "C" and "U" Code systems will vary.

0

2

3

4

5

6

7

C

-

-

-

-

-

-

-

-

Fuel and Air Metering; Auxiliary Emission

1- Fuel and Air Metering

Controls

Fuel and Air Metering (injector circuit

malfunction only)

Ignition System or Misfire

Auxiliary Emission Control System

Vehicle Speed Control and Idle Control

System

Computer Output Circuits

Transmission

8- Transmission

9- Transmission

A- Hybrid Propulsion

B- Hybrid Propulsion

Hybrid Propulsion

OBD2 DTC EXAMPLE

P0201 - Injector Circuit Malfunction, Cylinder 1

Onboard Diagnostics

DIAGNOSTIC TROUBLE CODES (DTCs)

18 Craftsman 87702

DTCs and MIL Status

When the vehicle’s on-board computer detects

a failure in an emissions-related component or

system, the computer’s internal diagnostic

program assigns a diagnostic trouble code

(DTC) that points to the system (and subsystem)

where the fault was found. The diagnostic

program saves the code in the computer’s

memory. It records a “Freeze Frame” of condi-

tions present when the fault was found, and lights the Malfunction

Indicator Lamp (MIL). Some faults require detection for two trips in a row

before the MIL is turned on.

The “Malfunction Indicator Lamp” (MIL) is the accepted term

used to describe the lamp on the dashboard that lights to warn

the driver that an emissions-related fault has been found.

Some manufacturers may still call this lamp a “Check Engine”

or “Service Engine Soon” light.

There are two types of DTCs used for emissions-related faults: Type “A”

and Type “B.” Type “A” codes are “One-Trip” codes; Type “B” DTCs are

usually Two-Trip DTCs.

When a Type “A” DTC is found on the First Trip, the following events

take place:

 The computer commands the MIL “On” when the failure is first found.

 If the failure causes a severe misfire that may cause damage to the

catalytic converter, the MIL “flashes” once per second. The MIL

continues to flash as long as the condition exists. If the condition

that caused the MIL to flash is no longer present, the MIL will light

“steady” On.

 A DTC is saved in the computer’s memory for later retrieval.

 A “Freeze Frame” of the conditions present in the engine or emissions

system when the MIL was ordered “On” is saved in the computer’s

memory for later retrieval. This information shows fuel system status

(closed loop or open loop), engine load, coolant temperature, fuel trim

value, MAP vacuum, engine RPM and DTC priority.

When a Type “B” DTC is found on the First Trip, the following events

take place:

 The computer sets a Pending DTC, but the MIL is not ordered “On.”

“Freeze Frame” data may or may not be saved at this time

depending on manufacturer. The Pending DTC is saved in the

computer’s memory for later retrieval.

 If the failure is found on the second consecutive trip, the MIL is

ordered “On.” “Freeze Frame” data is saved in the computer’s

memory.

 If the failure is not found on the second Trip, the Pending DTC is

erased from the computer’s memory.

The MIL will stay lit for both Type “A” and Type “B” codes until one of

the following conditions occurs:

Onboard Diagnostics

OBD2 MONITORS

Craftsman 87702 19

 If the conditions that caused the MIL to light are no longer present

for the next three trips in a row, the computer automatically turns the

MIL “Off” if no other emissions-related faults are present. However,

the DTCs remain in the computer’s memory as a history code for 40

warm-up cycles (80 warm-up cycles for fuel and misfire faults). The

DTCs are automatically erased if the fault that caused them to be

set is not detected again during that period.

 Misfire and fuel system faults require three trips with “similar

conditions” before the MIL is turned “Off.” These are trips where the

engine load, RPM and temperature are similar to the conditions

present when the fault was first found.

After the MIL has been turned off, DTCs and Freeze Frame

data stay in the computer’s memory.

 Erasing the DTCs from the computer’s memory can also turn off the

MIL. See ERASING DIAGNOSTIC TROUBLE CODES (DTCs) on

page 49, before erasing codes from the computer’s memory. If a

Diagnostic Tool or Scan Tool is used to erase the codes, Freeze

Frame data will also be erased.

OBD2 MONITORS

To ensure the correct operation of the various emissions-related

components and systems, a diagnostic program was developed and

installed in the vehicle’s on-board computer. The program has several

procedures and diagnostic strategies. Each procedure or diagnostic

strategy is made to monitor the operation of, and run diagnostic tests on,

a specific emissions-related component or system. These tests ensure

the system is running correctly and is within the manufacturer’s

specifications. On OBD2 systems, these procedures and diagnostic

strategies are called “Monitors.”

Currently, fifteen Monitors are supported by OBD2 systems. Additional

monitors may be added as a result of Government regulations as the

OBD2 system grows and matures. Not all vehicles support all fifteen

Monitors. Additionally, some Monitors are supported by “spark ignition”

vehicles only, while others are supported by “compression ignition”

vehicles only.

Monitor operation is either “Continuous” or “Non-Continuous,”

depending on the specific monitor.

Continuous Monitors

Three of these Monitors are designed to constantly monitor their

associated components and/or systems for proper operation.

Continuous Monitors run constantly when the engine is running. The

Continuous Monitors are:

Comprehensive Component Monitor (CCM)

Misfire Monitor

Fuel System Monitor

Onboard Diagnostics

OBD2 MONITORS

20 Craftsman 87702

Non-Continuous Monitors

The other twelve Monitors are “non-continuous” Monitors. “Non-

continuous” Monitors perform and complete their testing once per trip.

The “non-continuous” Monitors are:

Oxygen Sensor Monitor

Oxygen Sensor Heater Monitor

Catalyst Monitor

Heated Catalyst Monitor

EGR System Monitor

EVAP System Monitor

Secondary Air System Monitor

The following Monitors became standard beginning in 2010.

The majority of vehicles produced before this time will not

support these Monitors

NMHC Monitor

NOx Adsorber Monitor

Boost Pressure System Monitor

Exhaust Gas Sensor Monitor

PM Filter Monitor

The following provides a brief explanation of the function of each Monitor:

Comprehensive Component Monitor (CCM) - This Monitor

continuously checks all inputs and outputs from sensors,

actuators, switches and other devices that provide a signal to the

computer. The Monitor checks for shorts, opens, out of range value,

functionality and “rationality.”

Rationality: Each input signal is compared against all other

inputs and against information in the computer’s memory to see

if it makes sense under the current operating conditions.

Example: The signal from the throttle position sensor indicates

the vehicle is in a wide-open throttle condition, but the vehicle is

really at idle, and the idle condition is confirmed by the signals

from all other sensors. Based on the input data, the computer

determines that the signal from the throttle position sensor is not

rational (does not make sense when compared to the other

inputs). In this case, the signal would fail the rationality test.

The CCM is supported by both “spark ignition” vehicles and

“compression ignition” vehicles. The CCM may be either a “One-Trip” or

a “Two-Trip” Monitor, depending on the component.

Onboard Diagnostics

OBD2 MONITORS

Craftsman 87702 21

Fuel System Monitor - This Monitor uses a Fuel System

Correction program, called Fuel Trim, inside the on-board

computer. Fuel Trim is a set of positive and negative values that

represent adding or subtracting fuel from the engine. This program is

used to correct for a lean (too much air/not enough fuel) or rich (too

much fuel/not enough air) air-fuel mixture. The program is designed to

add or subtract fuel, as needed, up to a certain percent. If the correction

needed is too large and exceeds the time and percent allowed by the

program, a fault is indicated by the computer.

The Fuel System Monitor is supported by both “spark ignition” vehicles

and “compression ignition” vehicles. The Fuel System Monitor may be a

“One-Trip” or “Two-Trip” Monitor, depending on the severity of the

problem.

Misfire Monitor - This Monitor continuously checks for engine misfires.

A misfire occurs when the air-fuel mixture in the cylinder does not ignite.

The misfire Monitor uses changes in crankshaft speed to sense an engine

misfire. When a cylinder misfires, it no longer contributes to the speed of the

engine, and engine speed decreases each time the affected cylinder(s) misfire.

The misfire Monitor is designed to sense engine speed fluctuations and

determine from which cylinder(s) the misfire is coming, as well as how bad the

misfire is. There are three types of engine misfires, Types 1, 2, and 3.

- Type 1 and Type 3 misfires are two-trip monitor faults. If a fault is sensed

on the first trip, the computer temporarily saves the fault in its memory as

a Pending Code. The MIL is not commanded on at this time. If the fault is

found again on the second trip, under similar conditions of engine speed,

load and temperature, the computer commands the MIL “On,” and the

code is saved in its long term memory.

- Type 2 misfires are the most severe type of misfire. When a Type 2

misfire is sensed on the first trip, the computer commands the MIL to

light when the misfire is sensed. If the computer determines that a

Type 2 misfire is severe , and may cause catalytic converter damage,

it commands the MIL to “flash” once per second as soon as the

misfire is sensed. When the misfire is no longer present, the MIL

reverts to steady “On” condition.

The Misfire Monitor is supported by both “spark ignition” vehicles and

“compression ignition” vehicles.

Catalyst Monitor - The catalytic converter is a device that is

installed downstream of the exhaust manifold. It helps to oxidize

(burn) the unburned fuel (hydrocarbons) and partially burned fuel

(carbon monoxide) left over from the combustion process. To

accomplish this, heat and catalyst materials inside the converter react

with the exhaust gases to burn the remaining fuel. Some materials

inside the catalytic converter also have the ability to store oxygen, and

release it as needed to oxidize hydrocarbons and carbon monoxide. In

the process, it reduces vehicle emissions by converting the polluting

gases into carbon dioxide and water.

The computer checks the efficiency of the catalytic converter by

monitoring the oxygen sensors used by the system. One sensor is located

before (upstream of) the converter; the other is located after (downstream

of) the converter. If the catalytic converter loses its ability to store oxygen,

Onboard Diagnostics

OBD2 MONITORS

22 Craftsman 87702

the downstream sensor signal voltage becomes almost the same as the

upstream sensor signal. In this case, the monitor fails the test.

The Catalyst Monitor is supported by “spark ignition” vehicles only. The

Catalyst Monitor is a “Two-Trip” Monitor. If a fault is found on the first

trip, the computer temporarily saves the fault in its memory as a

Pending Code. The computer does not command the MIL on at this time.

If the fault is sensed again on the second trip, the computer commands

the MIL “On” and saves the code in its long-term memory.

Heated Catalyst Monitor - Operation of the “heated” catalytic

converter is similar to the catalytic converter. The main difference

is that a heater is added to bring the catalytic converter to its operating

temperature more quickly. This helps reduce emissions by reducing the

converter’s down time when the engine is cold. The Heated Catalyst

Monitor performs the same diagnostic tests as the catalyst Monitor, and

also tests the catalytic converter’s heater for proper operation.

The Heated Catalyst Monitor is supported by “spark ignition” vehicles

only. This Monitor is also a “Two-Trip” Monitor.

Exhaust Gas Recirculation (EGR) Monitor - The Exhaust Gas

Recirculation (EGR) system helps reduce the formation of Oxides

of Nitrogen during combustion. Temperatures above 2500°F cause

nitrogen and oxygen to combine and form Oxides of Nitrogen in the

combustion chamber. To reduce the formation of Oxides of Nitrogen,

combustion temperatures must be kept below 2500°F. The EGR system

recirculates small amounts of exhaust gas back into the intake manifold,

where it is mixed with the incoming air/fuel mixture. This reduces

combustion temperatures by up to 500°F. The computer determines

when, for how long, and how much exhaust gas is recirculated back to

the intake manifold. The EGR Monitor performs EGR system function

tests at preset times during vehicle operation.

The EGR Monitor is supported by both “spark ignition” vehicles and

“compression ignition” vehicles. The EGR Monitor is a “Two-Trip”

Monitor. If a fault is found on the first trip, the computer temporarily

saves the fault in its memory as a Pending Code. The computer does

not command the MIL on at this time. If the fault is sensed again on the

second trip, the computer commands the MIL “On,” and saves the code

in its long-term memory.

Evaporative System (EVAP) Monitor - OBD2 vehicles are

equipped with a fuel Evaporative system (EVAP) that helps

prevent fuel vapors from evaporating into the air. The EVAP system

carries fumes from the fuel tank to the engine where they are burned

during combustion. The EVAP system may consist of a charcoal

canister, fuel tank cap, purge solenoid, vent solenoid, flow monitor, leak

detector and connecting tubes, lines and hoses.

Fumes are carried from the fuel tank to the charcoal canister by hoses

or tubes. The fumes are stored in the charcoal canister. The computer

controls the flow of fuel vapors from the charcoal canister to the engine

via a purge solenoid. The computer energizes or de-energizes the purge

solenoid (depending on solenoid design). The purge solenoid opens a

valve to allow engine vacuum to draw the fuel vapors from the canister

Onboard Diagnostics

OBD2 MONITORS

Craftsman 87702 23

into the engine where the vapors are burned. The EVAP Monitor checks

for proper fuel vapor flow to the engine, and pressurizes the system to

test for leaks. The computer runs this Monitor once per trip.

The EVAP Monitor is supported by “spark ignition” vehicles only. The

EVAP Monitor is a “Two-Trip” Monitor. If a fault is found on the first trip,

the computer temporarily saves the fault in its memory as a Pending

Code. The computer does not command the MIL on at this time. If the

fault is sensed again on the second trip, the PCM commands the MIL

“On,” and saves the code in its long-term memory.

Oxygen Sensor Heater Monitor - The Oxygen Sensor Heater

Monitor tests the operation of the oxygen sensor’s heater. There

are two modes of operation on a computer-controlled vehicle: “open-

loop” and “closed-loop.” The vehicle operates in open-loop when the

engine is cold, before it reaches normal operating temperature. The

vehicle also goes to open-loop mode at other times, such as heavy load

and full throttle conditions. When the vehicle is running in open-loop, the

oxygen sensor signal is ignored by the computer for air/fuel mixture

corrections. Engine efficiency during open-loop operation is very low,

and results in the production of more vehicle emissions.

Closed-loop operation is the best condition for both vehicle emissions

and vehicle operation. When the vehicle is operating in closed-loop, the

computer uses the oxygen sensor signal for air/fuel mixture corrections.

In order for the computer to enter closed-loop operation, the oxygen

sensor must reach a temperature of at least 600°F. The oxygen sensor

heater helps the oxygen sensor reach and maintain its minimum

operating temperature (600°F) more quickly, to bring the vehicle into

closed-loop operation as soon as possible.

The Oxygen Sensor Heater Monitor is supported by “spark ignition”

vehicles only. The Oxygen Sensor Heater Monitor is a “Two-Trip”

Monitor. If a fault is found on the first trip, the computer temporarily

saves the fault in its memory as a Pending Code. The computer does

not command the MIL on at this time. If the fault is sensed again on the

second trip, the computer commands the MIL “On,” and saves the code

in its long-term memory.

Oxygen Sensor Monitor - The Oxygen Sensor monitors how

much oxygen is in the vehicle’s exhaust. It generates a varying

voltage of up to one volt, based on how much oxygen is in the exhaust

gas, and sends the signal to the computer. The computer uses this

signal to make corrections to the air/fuel mixture. If the exhaust gas has

a large amount of oxygen (a lean air/fuel mixture), the oxygen sensor

generates a “low” voltage signal. If the exhaust gas has very little

oxygen (a rich mixture condition), the oxygen sensor generates a “high”

voltage signal. A 450mV signal indicates the most efficient, and least

polluting, air/fuel ratio of 14.7 parts of air to one part of fuel.

The oxygen sensor must reach a temperature of at least 600-650°F,

and the engine must reach normal operating temperature, for the

computer to enter into closed-loop operation. The oxygen sensor only

functions when the computer is in closed-loop. A properly operating

oxygen sensor reacts quickly to any change in oxygen content in the

Onboard Diagnostics

OBD2 MONITORS

24 Craftsman 87702

exhaust stream. A faulty oxygen sensor reacts slowly, or its voltage

signal is weak or missing.

The Oxygen Sensor Monitor is supported by “spark ignition” vehicles

only. The Oxygen Sensor Monitor is a “Two-Trip” monitor. If a fault is

found on the first trip, the computer temporarily saves the fault in its

memory as a Pending Code. The computer does not command the MIL

on at this time. If the fault is sensed again on the second trip, the

computer commands the MIL “On,” and saves the code in its long-term

memory.

Secondary Air System Monitor - When a cold engine is first

started, it runs in open-loop mode. During open-loop operation,

the engine usually runs rich. A vehicle running rich wastes fuel and

creates increased emissions, such as carbon monoxide and some

hydrocarbons. A Secondary Air System injects air into the exhaust

stream to aid catalytic converter operation:

1. It supplies the catalytic converter with the oxygen it needs to oxidize

the carbon monoxide and hydrocarbons left over from the

combustion process during engine warm-up.

2. The extra oxygen injected into the exhaust stream also helps the

catalytic converter reach operating temperature more quickly during

warm-up periods. The catalytic converter must heat to operating

temperature to work properly.

The Secondary Air System Monitor checks for component integrity and

system operation, and tests for faults in the system. The computer runs

this Monitor once per trip.

The Secondary Air System Monitor is a “Two-Trip” monitor. If a fault is

found on the first trip, the computer temporarily saves this fault in its

memory as a Pending Code. The computer does not command the MIL

on at this time. If the fault is sensed again on the second trip, the

computer commands the MIL “On,” and saves the code in its long-term

memory.

Non-Methane Hydrocarbon Catalyst (NMHC) Monitor - The

non-methane hydrocarbon catalyst is a type of catalytic converter.

It helps to remove non-methane hydrocarbons (NMH) left over from the

combustion process from the exhaust stream. To accomplish this, heat

and catalyst materials react with the exhaust gases to convert NMH to

less harmful compounds. The computer checks the efficiency of the

catalyst by monitoring the quantity of NMH in the exhaust stream. The

monitor also verifies that sufficient temperature is present to aid in

particulate matter (PM) filter regeneration.

The NMHC Monitor is supported by “compression ignition” vehicles only.

The NMHC Monitor is a “Two-Trip” Monitor. If a fault is found on the first

trip, the computer temporarily saves the fault in its memory as a

Pending Code. The computer does not command the MIL on at this time.

If the fault is sensed again on the second trip, the computer commands

the MIL “On,” and saves the code in its long-term memory.

Onboard Diagnostics

OBD2 MONITORS

Craftsman 87702 25

NOx Aftertreatment Monitor - NOx aftertreatment is based on a

catalytic converter support that has been coated with a special

washcoat containing zeolites. NOx Aftertreatment is designed to reduce

oxides of nitrogen emitted in the exhaust stream. The zeolite acts as a

molecular "sponge" to trap the NO and NO2 molecules in the exhaust

stream. In some implementations, injection of a reactant before the

aftertreatment purges it. NO2 in particular is unstable, and will join with

hydrocarbons to produce H2O and N2. The NOx Aftertreatment Monitor

monitors the function of the NOx aftertreatment to ensure that tailpipe

emissions remain within acceptable limits.

The NOx Aftertreatment Monitor is supported by “compression ignition”

vehicles only. The NOx Aftertreatment Monitor is a “Two-Trip” Monitor. If

a fault is found on the first trip, the computer temporarily saves the fault

in its memory as a Pending Code. The computer does not command the

MIL on at this time. If the fault is sensed again on the second trip, the

computer commands the MIL “On,” and saves the code in its long-term

memory.

Boost Pressure System Monitor - The boost pressure system

serves to increase the pressure produced inside the intake

manifold to a level greater than atmospheric pressure. This increase in

pressure helps to ensure compete combustion of the air-fuel mixture.

The Boost Pressure System Monitor checks for component integrity and

system operation, and tests for faults in the system. The computer runs

this Monitor once per trip.

The Boost Pressure System Monitor is supported by “compression

ignition” vehicles only. The Boost Pressure System Monitor is a “Two-

Trip” Monitor. If a fault is found on the first trip, the computer temporarily

saves the fault in its memory as a Pending Code. The computer does

not command the MIL on at this time. If the fault is sensed again on the

second trip, the computer commands the MIL “On,” and saves the code

in its long-term memory.

Exhaust Gas Sensor Monitor - The exhaust gas sensor is used

by a number of systems/monitors to determine the content of the

exhaust stream. The computer checks for component integrity, system

operation, and tests for faults in the system, as well as feedback faults

that may affect other emission control systems.

The Exhaust Gas Sensor Monitor is supported by “compression ignition”

vehicles only. The Exhaust Gas Sensor Monitor is a “Two-Trip” Monitor.

If a fault is found on the first trip, the computer temporarily saves the

fault in its memory as a Pending Code. The computer does not

command the MIL on at this time. If the fault is sensed again on the

second trip, the computer commands the MIL “On,” and saves the code

in its long-term memory.

Onboard Diagnostics

OBD2 MONITORS

26 Craftsman 87702

PM Filter Monitor - The particulate matter (PM) filter removes

particulate matter from the exhaust stream by filtration. The filter

has a honeycomb structure similar to a catalyst substrate, but with the

channels blocked at alternate ends. This forces the exhaust gas to flow

through the walls between the channels, filtering the particulate matter

out. The filters are self-cleaning by periodic modification of the exhaust

gas concentration in order to burn off the trapped particles (oxidizing the

particles to form CO2 and water). The computer monitors the efficiency

of the filter in trapping particulate matter, as well as the ability of the filter

to regenerate (self-clean).

The PM Filter Monitor is supported by “compression ignition” vehicles

only. The PM Filter Monitor is a “Two-Trip” Monitor. If a fault is found on

the first trip, the computer temporarily saves the fault in its memory as a

Pending Code. The computer does not command the MIL on at this time.

If the fault is sensed again on the second trip, the computer commands

the MIL “On,” and saves the code in its long-term memory.

OBD2 Reference Table

The table below lists current OBD2 Monitors, and indicates the following

for each Monitor:

A. Monitor Type (how often does the Monitor run; Continuous or

Once per trip)

B. Number of trips needed, with a fault present, to set a pending DTC

C. Number of consecutive trips needed, with a fault present, to

command the MIL “On” and store a DTC

D. Number of trips needed, with no faults present, to erase a Pending

DTC

E. Number and type of trips or drive cycles needed, with no faults

present, to turn off the MIL

F. Number of warm-up periods needed to erase the DTC from the

computer’s memory after the MIL is turned off

Onboard Diagnostics

OBD2 MONITORS

Craftsman 87702 27

Name of

Monitor

A

B

C

D

E

F

Comprehensive

Component Monitor Continuous 1 2 1 3 40

Misfire Monitor

(Type 1 and 3) Continuous 1 2 1

3 - similar

conditions 80

Misfire Monitor

(Type 2) Continuous 1

3 - similar

conditions 80

Fuel System Monitor Continuous 1 1 or 2 1 3 - similar

conditions 80

Catalytic Converter

Monitor

Once per

trip 1 2 1 3 trips 40

Oxygen Sensor

Monitor

Once per

trip 1 2 1 3 trips 40

Oxygen Sensor

Heater Monitor

Once per

trip 1 2 1 3 trips 40

Exhaust Gas

Recirculation (EGR)

Monitor

Once per

trip 1 2 1 3 trips 40

Evaporative

Emissions Controls

Monitor

Once per

trip 1 2 1 3 trips 40

Secondary Air

System (AIR) Monitor

Once per

trip 1 2 1 3 trips 40

NMHC Monitor Once per

trip 1 2 1 3 trips 40

NOx Adsorber

Monitor

Once per

trip 1 2 1 3 trips 40

Boost Pressure

System Monitor

Once per

trip 1 2 1 3 trips 40

Exhaust Gas Sensor

Monitor

Once per

trip 1 2 1 3 trips 40

PM Filter Monitor Once per

trip 1 2 1 3 trips 40

Preparation for Testing

PRELIMINARY VEHICLE DIAGNOSTIC WORKSHEET

28 Craftsman 87702

PRELIMINARY VEHICLE DIAGNOSTIC WORKSHEET

The purpose of this form is to help you gather preliminary information on

your vehicle before you retrieve codes. By having a complete account of

your vehicle's current problem(s), you will be able to systematically

pinpoint the problem(s) by comparing your answers to the fault codes

you retrieve. You can also provide this information to your mechanic to

assist in diagnosis and help avoid costly and unnecessary repairs. It is

important for you to complete this form to help you and/or your

mechanic have a clear understanding of your vehicle's problems.

NAME:

DATE:

VIN*:

YEAR:

MAKE:

MODEL:

ENGINE SIZE:

VEHICLE MILEAGE:

*VIN: Vehicle Identification Number, found at the base of the windshield

on a metallic plate, or at the driver door latch area (consult your vehicle

owner's manual for location).

TRANSMISSION:

 Automatic

 Manual

Please check all applicable items in each category.

DESCRIBE THE PROBLEM:

Preparation for Testing

PRELIMINARY VEHICLE DIAGNOSTIC WORKSHEET

Craftsman 87702 29

WHEN DID YOU FIRST NOTICE THE PROBLEM:

 Just Started

 Started Last Week

 Started Last Month

 Other: m

LIST ANY REPAIRS DONE IN THE PAST SIX MONTHS:

PROBLEMS STARTING

 No symptoms

 Will not crank

 Cranks, but will not start

 Starts, but takes a long

time

ENGINE QUITS OR STALLS

 No symptoms

 Right after starting

 When shifting into gear

 During steady-speed

driving

 Right after vehicle

comes to a stop

 While idling

 During acceleration

 When parking

IDLING CONDITIONS

 No symptoms

 Is too slow at all times

 Is too fast

 Is sometimes too fast or

too slow

 Is rough or uneven

 Fluctuates up and down

RUNNING CONDITIONS

 No symptoms

 Runs rough

 Lacks power

 Bucks and jerks

 Poor fuel economy

 Hesitates or stumbles on

accelerations

 Backfires

 Misfires or cuts out

 Engine knocks, pings or

rattles

 Surges

 Dieseling or run-on

Preparation for Testing

PRELIMINARY VEHICLE DIAGNOSTIC WORKSHEET

30 Craftsman 87702

AUTOMATIC TRANSMISSION PROBLEMS (if applicable)

 No symptoms

 Shifts too early or too late

 Changes gear incorrectly

 Vehicle does not move

when in gear

 Jerks or bucks

PROBLEM OCCURS

 Morning  Afternoon  Anytime

ENGINE TEMPERATURE WHEN PROBLEM OCCURS

 Cold  Warm  Hot

DRIVING CONDITIONS WHEN PROBLEM OCCURS

 Short - less than 2 miles

 2 - 10 miles

 Long - more than 10 miles

 Stop and go

 While turning

 While braking

 At gear engagement

 With A/C operating

 With headlights on

 During acceleration

 Mostly driving downhill

 Mostly driving uphill

 Mostly driving level

 Mostly driving curvy

roads

 Mostly driving rough

roads

DRIVING HABITS

 Mostly city driving

 Highway

 Park vehicle inside

 Park vehicle outside

 Drive less than 10 miles per day

 Drive 10 to 50 miles per day

 Drive more than 50 miles per

day

GASOLINE USED

 87 Octane

 89 Octane

 91 Octane

 More than 91 Octane

WEATHER CONDITIONS WHEN PROBLEM OCCURS

 32 - 55° F (0 - 13° C)

 Below freezing (32° F / 0° C)

 Above 55° F (13° C)

CHECK ENGINE LIGHT / DASH WARNING LIGHT

 Sometimes ON  Always ON  Never ON

PECULIAR SMELLS

 "Hot"

 Sulfur ("rotten egg")

 Burning rubber

 Gasoline

 Burning oil

 Electrical

STRANGE NOISES

 Rattle

 Knock

 Squeak

 Other

Preparation for Testing

BEFORE YOU BEGIN

Craftsman 87702 31

BEFORE YOU BEGIN

The Enhanced CanOBD2 Diag-

nostic Tool aids in monitoring

electronic- and emissions-related

faults in your vehicle and

retrieving fault codes related to

malfunctions in these systems.

Mechanical problems such as

low oil level or damaged hoses, wiring or electrical connectors can

cause poor engine performance and may also cause a fault code to set.

Fix any known mechanical problems before performing any test. See

your vehicle’s service manual or a mechanic for more information.

Check the following areas before starting any test:

 Check the engine oil, power steering fluid, transmission fluid (if

applicable), engine coolant and other fluids for proper levels. Top off

low fluid levels if needed.

 Make sure the air filter is clean and in good condition. Make sure all

air filter ducts are properly connected. Check the air filter ducts for

holes, rips or cracks.

 Make sure all engine belts are in good condition. Check for cracked,

torn, brittle, loose or missing belts.

 Make sure mechanical linkages to engine sensors (throttle, gearshift

position, transmission, etc.) are secure and properly connected. See

your vehicle’s service manual for locations.

 Check all rubber hoses (radiator) and steel hoses (vacuum/fuel) for

leaks, cracks, blockage or other damage. Make sure all hoses are

routed and connected properly.

 Make sure all spark plugs are clean and in good condition. Check

for damaged, loose, disconnected or missing spark plug wires.

 Make sure the battery terminals are clean and tight. Check for

corrosion or broken connections. Check for proper battery and

charging system voltages.

 Check all electrical wiring and harnesses for proper connection.

Make sure wire insulation is in good condition, and there are no bare

wires.

 Make sure the engine is mechanically sound. If needed, perform a

compression check, engine vacuum check, timing check (if applica-

ble), etc.

Preparation for Testing

VEHICLE SERVICE MANUALS

32 Craftsman 87702

VEHICLE SERVICE MANUALS

Always refer to the manufacturer’s service manual for your vehicle

before performing any test or repair procedures. Contact your local car

dealership, auto parts store or bookstore for availability of these

manuals. The following companies publish valuable repair manuals:

 Haynes Publications

861 Lawrence Drive

Newbury Park, California 91320

Phone: 800-442-9637

Web: www.haynes.com

 Mitchell 1

14145 Danielson Street

Poway, California 92064

Phone: 888-724-6742

Web: www.m1products.com

 Motor Publications

5600 Crooks Road, Suite 200

Troy, Michigan 48098

Phone: 800-426-6867

Web: www.motor.com

FACTORY SOURCES

Ford, GM, Chrysler, Honda, Isuzu, Hyundai and Subaru Service

Manuals

 Helm Inc.

14310 Hamilton Avenue

Highland Park, Michigan 48203

Phone: 800-782-4356

Web: www.helminc.com

Using the Diagnostic Tool

CODE RETRIEVAL PROCEDURE

Craftsman 87702 33

CODE RETRIEVAL PROCEDURE

Never replace a part based only on the DTC definition.

Each DTC has a set of testing procedures, instructions

and flow charts that must be followed to confirm the

location of the problem. This information is found in the

vehicle's service manual. Always refer to the vehicle's

service manual for detailed testing instructions.

Check your vehicle thoroughly before performing

any test. See BEFORE YOU BEGIN on page 31

for details.

ALWAYS observe safety precautions whenever working on a

vehicle. See SAFETY FIRST! on page 3 for more information.

1. Turn the ignition off.

2. Locate the vehicle's 16-pin Data Link

Connector (DLC). See page 5 for

connector location.

Some DLCs have a plastic cover

that must be removed before

connecting the Diagnostic Tool

cable connector.

If the Diagnostic Tool is ON, turn it

OFF by pressing the POWER/LINK

button BEFORE connecting

the Diagnostic Tool to the DLC.

3. Connect the Diagnostic Tool cable connector to the vehicle’s DLC.

The cable connector is keyed and will only fit one way.

 If you have problems connecting the cable connector to the DLC,

rotate the connector 180° and try again.

 If you still have problems, check the DLC on the vehicle and on

the Diagnostic Tool. Refer to your vehicle’s service manual to

properly check the vehicle’s DLC.

4. When the Diagnostic Tool’s cable

connector is properly connected to the

vehicle’s DLC, the unit automatically

turns ON, and links to the vehicle’s on-

board computer.

Retrieving and using Diagnostic Trouble Codes (DTCs) for

troubleshooting vehicle operation is only one part of an

overall diagnostic strategy.

Using the Diagnostic Tool

CODE RETRIEVAL PROCEDURE

34 Craftsman 87702

 If the unit does not power on automatically when connected to

the vehicle’s DLC connector, it usually indicates there is no

power present at the vehicle’s DLC connector. Check your fuse

panel and replace any burned-out fuses.

 If replacing the fuse(s) does not correct the problem, consult

your vehicle’s repair manual to identify the proper computer

(PCM) fuse/circuit, and perform any necessary repairs before

proceeding.

5. Turn the ignition on. DO NOT start the engine.

 The Diagnostic Tool will automatically start a check of the vehicle’s

computer to determine which type of communication protocol it is

using. When the Diagnostic Tool identifies the computer’s

communication protocol, a communication link is established. The

protocol type used by the vehicle’s computer is shown on the LCD

display.

A PROTOCOL is a set of rules and procedures for

regulating data transmission between computers, and

between testing equipment and computers. As of this

writing, five different types of protocols (ISO 9141,

Keyword 2000, J1850 PWM, J1850 VPW and CAN) are in

use by vehicle manufacturers. The Diagnostic Tool

automatically identifies the protocol type and establishes a

communication link with the vehicle’s computer.

6. After approximately 10~60 seconds, the Diagnostic Tool will

retrieve and display any Diagnostic Trouble Codes, Monitor Status

and Freeze Frame Data retrieved from the vehicle’s computer

memory.

 If the Diagnostic Tool fails to link to

the vehicle’s computer a “Linking

Failed” message shows on the

Diagnostic Tool’s LCD display.

- Verify the connection at the DLC,

and verify the ignition is ON.

- Turn the ignition OFF, wait 5 seconds, then turn back ON to

reset the computer.

- Ensure your vehicle is OBD2 compliant. See VEHICLES

COVERED on page 5 for vehicle compliance verification

information.

 The Diagnostic Tool will automati-

cally re-link to the vehicle’s com-

puter every 30 seconds to refresh

the data being retrieved. When data

is being refreshed, the message

“One moment Auto – link in

progress” is shown on the LCD

display. This action repeats as long

as the Diagnostic Tool is communicating with the vehicle’s

computer.

Using the Diagnostic Tool

CODE RETRIEVAL PROCEDURE

Craftsman 87702 35

 The Diagnostic Tool will display a code only if codes are present

in the vehicle’s computer memory. If no codes (including

“enhanced” codes) are present, a “No Powertrain DTCs or

Freeze Frame Data is presently stored in the vehicle’s

computer” message is displayed.

 The Diagnostic Tool is capable of retrieving and storing up to 32

codes in memory, for immediate or later viewing.

7. To read the display:

Refer to DISPLAY FUNCTIONS on page 9 for a descrip-

tion of LCD display elements.

 A visible icon indicates that the Diagnostic Tool is being

powered through the vehicle’s DLC connector.

 A visible icon indicates that the Diagnostic Tool is linked to

(communicating with) the vehicle’s computer.

 The I/M Monitor Status icons indicate the type and number of

Monitors the vehicle supports, and provides indications of the

current status of the vehicle’s Monitors. A solid Monitor icon

indicates the associated Monitor has run and completed its

testing. A blinking Monitor icon indicates the associated Monitor

has not run and completed its testing.

 The upper right hand corner of the dis-

play shows the number of the code

currently being displayed, the total

number of codes retrieved, the type of

code and whether or not the displayed

code commanded the MIL on. If the

code being displayed is a PENDING

code, the PENDING icon is shown.

Freeze Frame data is always associated with the “Priority

Code” (identified as Code #1 in the Diagnostic Tool’s display).

If the FREEZE FRAME icon is lit when the “Priority Code”

(Code #1) is displayed on the Diagnostic Tool’s screen, it

indicates that there is Freeze Frame data associated with this

code, and the vehicle’s computer has saved it in its memory.

 The Diagnostic Trouble Code (DTC) and related code definition

are shown in the lower section of the LCD display.

In the case of long code definitions, a small arrow is

shown in the upper/lower right-hand corner of the code

display area to indicate the presence of additional

information. Use the button to view the additional

information.

8. Read and interpret Diagnostic Trouble Codes/system condition

using the LCD display and the green, yellow and red LEDs.

The green, yellow and red LEDs are used (with the LCD

display) as visual aids to make it easier to determine

engine system conditions.

Using the Diagnostic Tool

CODE RETRIEVAL PROCEDURE

36 Craftsman 87702

 Green LED – Indicates that all

engine systems are “OK” and

operating normally. All monitors

supported by the vehicle have run

and performed their diagnostic

testing, and no trouble codes are

present. A zero will show on the

Diagnostic Tool’s LCD display, and

all Monitor icons will be solid.

 Yellow LED – Indicates one of the

following conditions:

A. PENDING CODE IS PRE-

SENT – If the yellow LED is

illuminated, it may indicate a

Pending code is present. Check

the Diagnostic Tool’s LCD

display for confirmation. A

Pending code is confirmed by

the presence of a numeric code

and the word PENDING on the

Diagnostic Tool’s LCD display.

B. MONITOR NOT RUN

STATUS – If the Diagnostic

Tool’s LCD display shows a

zero (indicating there are no

DTC’s present in the vehicle’s

computer memory), but the

yellow LED is illuminated, it

may be an indication that some of the Monitors supported

by the vehicle have not yet run and completed their

diagnostic testing. Check the Diagnostic Tool’s LCD

display for confirmation. All Monitor icons that are blinking

have not yet run and completed their diagnostic testing; all

Monitor icons that are solid have run and completed their

diagnostic testing.

 Red LED – Indicates there is a

problem with one or more of the

vehicle’s systems. The red LED is

also used to indicate that DTC(s) are

present (displayed on the Diagnostic

Tool’s screen). In this case, the

Multifunction Indicator (Check Engine)

lamp on the vehicle’s instrument

panel will be illuminated.

 Flashing Red and Yellow LEDs – Indicates that a "permanent"

code has been set, and one or more of the vehicle’s monitors

has failed its diagnostic testing. A "permanent" DTC can be

cleared only by the vehicle's computer following successful

completion of the monitor that caused the fault to set.

Using the Diagnostic Tool

CODE RETRIEVAL PROCEDURE

Craftsman 87702 37

 DTC’s that start with “P0”, “P2” and some “P3” are considered

Generic (Universal). All Generic DTC definitions are the same

on all OBD2 equipped vehicles. The Diagnostic Tool

automatically displays the code definitions for Generic DTC’s.

 DTC’s that start with “P1” and some

“P3” are Manufacturer Specific codes

and their code definitions vary with

each vehicle manufacturer. When a

Manufacturer Specific DTC is

retrieved, the LCD display shows a list

of vehicle manufacturers. Use the

DOWN button to highlight the appropriate manufacturer, then

press the ENTER button to display the correct code definition for

your vehicle. A confirmation message shows on the LCD display.

- If the correct manufacturer is

shown, use the DOWN button

to highlight YES, then press the

ENTER button to continue.

- If the correct manufacturer is not

shown, use the DOWN button

to highlight NO, then press the

ENTER button to return to the list of vehicle manufacturers.

If the manufacturer for your vehicle is not listed, use the

DOWN button to select More and press the ENTER

button for additional manufacturers.

If the Manufacturer Specific

definition for the currently dis-

played code is not available, an

advisory message shows on the

Diagnostic Tool’s LCD display.

9. If more than one code was retrieved press

the DTC button, as necessary, to

display additional codes one at a time.

 Whenever the Scroll function is used to view additional codes,

the Diagnostic Tool’s communication link with the vehicle’s

computer disconnects. To re-establish communication, press the

POWER/LINK button again.

 Each time the DTC button is pressed and released, the

Diagnostic Tool will scroll and display the next DTC in sequence

until all DTCs in its memory have displayed.

 Freeze Frame Data (if available) will display after DTC #1.

Using the Diagnostic Tool

CODE RETRIEVAL PROCEDURE

38 Craftsman 87702

 In OBD2 systems, when an

emissions-related engine malfunction

occurs that causes a DTC to set, a

record or snapshot of engine

conditions at the time that the

malfunction occurred is also saved in

the vehicle’s computer memory. The

record saved is called Freeze Frame

data. Saved engine conditions include, but are not limited to: engine

speed, open or closed loop operation, fuel system commands,

coolant temperature, calculated load value, fuel pressure, vehicle

speed, air flow rate, and intake manifold pressure.

If more than one malfunction is present that causes more

than one DTC to be set, only the code with the highest

priority will contain Freeze Frame data. The code

designated “01” on the Diagnostic Tool display is referred

to as the PRIORITY code, and Freeze Frame data always

refers to this code. The priority code is also the one that

has commanded the MIL on.

Retrieved information can be uploaded to a Personal

Computer (PC) with the use of optional software (see

instructions included with the software for more information).

10. When the last retrieved DTC has been displayed and the DTC

button is pressed, the display returns to the first DTC retrieved.

11. Determine engine system(s) condition by viewing the Diagnostic

Tool’s LCD display for any retrieved Diagnostic Trouble Codes,

code definitions, Freeze Frame data and interpreting the green,

yellow and red LEDs.

 If DTC’s were retrieved and you are going to perform the repairs

yourself, proceed by consulting the Vehicle’s Service Repair

Manual for testing instructions, testing procedures, and flow

charts related to retrieved code(s).

 If you plan to take the vehicle to a professional to have it

serviced, complete the PRELIMINARY VEHICLE DIAGNOSTIC

WORKSHEET on page 28 and take it together with the retrieved

codes, freeze frame data and LED information to aid in the

troubleshooting procedure.

 To prolong battery life, the Diagnostic Tool automatically shuts

“Off” approximately three minutes after it is disconnected from

the vehicle. The DTCs retrieved, Monitor Status and Freeze

Frame data (if any) will remain in the Diagnostic Tool’s memory,

and may be viewed at any time by turning the unit “On”. If the

Diagnostic Tool’s batteries are removed, or if the Diagnostic

Tool is re-linked to a vehicle to retrieve codes/data, any prior

codes/data in its memory are automatically cleared.

Using the Diagnostic Tool

VIEWING ENHANCED DTCS

Craftsman 87702 39

VIEWING ENHANCED DTCs

The “enhanced” mode provides the ability to retrieve enhanced DTCs

from most Chrysler/Jeep, Ford/Mazda, GM/Isuzu, Honda/Acura and

Toyota/Lexus vehicles. The types of enhanced data available depends

on the vehicle make. You can also retrieve Anti-Lock Brake System

(ABS) DTCs.

To view Enhanced DTCs:

1. With the Diagnostic Tool on the Code

Retrieval screen, press and release the

M button.

 The Main Menu displays.

2. Use the DOWN button to highlight

Enhanced DTCs, then press the

ENTER button.

3. The screen shown when Enhanced DTCs is selected from the Main

Menu depends on the type(s) of DTC(s) returned during the code

retrieval process:

 If no DTCs were retrieved, or only

generic DTCs were retrieved, the

Select Manufacturer screen displays.

Use the DOWN button to high-

light the appropriate manufacturer,

then press the ENTER button to

view the selected information.

 If the Diagnostic Tool recognizes the

vehicle make or if a Manufacturer

specific DTC was retrieved, and the

manufacturer selected for the code

was Ford, the Select Data menu

displays. Use the DOWN button

to highlight the desired option, then

press the ENTER button to view the selected information, or,

press M button to exit and return to the Main Menu.

 If a Manufacturer specific DTC was

retrieved, and the manufacturer

selected for the code was not Chrysler,

Jeep, Ford, Mazda, General Motors,

Isuzu, Honda, Acura, Toyota or Lexus.

An advisory message displays. Press

the M button to return to the Main

Menu. Enhanced data is not available

for your vehicle.

Using the Diagnostic Tool

VIEWING ENHANCED DTCS

40 Craftsman 87702

Refer to the appropriate paragraph to view enhanced DTCs for your

vehicle:

 Chrysler/Jeep Enhanced DTCs .............page 40

 Ford/Mazda Enhanced DTCs ................page 41

 GM/Isuzu Enhanced DTCs ....................page 43

 Honda/Acura Enhanced DTCs ..............page 44

 Toyota/Lexus Enhanced DTCs..............page 46

Chrysler/Jeep Enhanced DTCs

When the Diagnostic Tool enters the “enhanced” mode (and Chrysler is

selected, if prompted), the Diagnostic Tool retrieves enhanced DTCs

from the vehicle’s computer.

1. A “One moment please” message

displays while the Diagnostic Tool

retrieves the selected DTCs.

 If the Diagnostic Tool fails to link to

the vehicle’s computer, a “Linking

Failed” message shows on the

Diagnostic Tool’s display.

- Verify the ignition is ON, then

press the M button to

continue.

2. To read the display:

Refer to DISPLAY FUNCTIONS on page 9 for a description of

LCD display elements.

 A visible icon indicates that the Diagnostic Tool is being

powered through the vehicle’s DLC connector.

 A visible icon indicates that the Diagnostic Tool is linked to

(communicating with) the vehicle’s computer.

 The upper right hand corner of the

display shows the number of the

code currently being displayed, the

total number of codes retrieved.

 The Diagnostic Trouble Code (DTC)

and related code definition are

shown in the lower section of the

LCD display.

I/M MONITOR STATUS icons are not displayed when

viewing enhanced DTCs.

In the case of long code definitions, or when viewing

Freeze Frame data, a small arrow is shown in the

upper/lower right-hand corner of the code display area

to indicate the presence of additional information. Use

the button to view the additional information.

Using the Diagnostic Tool

VIEWING ENHANCED DTCS

Craftsman 87702 41

 The Diagnostic Tool will display a

code only if codes are present in the

vehicle’s computer memory. If no

codes are present, a “No Enhanced

DTC’s are presently stored in the

vehicle’s computer” is displayed.

Press the M button to return to the

Main Menu.

3. If more than one code was retrieved press the DTC button, as

necessary, to display additional codes one at a time.

 Whenever the Scroll function is used to view additional codes,

the Diagnostic Tool’s communication link with the vehicle’s

computer disconnects. To re-establish communication, press the

POWER/LINK button again.

4. When the last retrieved DTC has been displayed and the DTC

button is pressed, the Diagnostic Tool returns to the “Priority Code”.

 To view additional enhanced DTCs, repeat steps 1 through 4,

above.

 To exit the enhanced mode, press the M button. The

Diagnostic Tool returns to the Main Menu screen.

Ford/Mazda Enhanced DTCs

Mazda Enhanced DTCs are available for Mazda-branded

Ford vehicles only.

When the Diagnostic Tool enters the “enhanced” mode (and Ford is

selected, if prompted), the Ford Enhanced menu displays. You may

view DTCs for either the “Continuous Memory Test”, “KOEO (Key On

Engine Off) Test” or “KOER (Key On Engine Running) Test.”

1. Use the DOWN button to highlight the

desired option, then press the ENTER

button.

When choosing to view KOER

Test DTCs, start the vehicle’s

engine before making your

selection.

 If the Diagnostic Tool fails to link to

the vehicle’s computer, a “Linking

Failed” message shows on the

Diagnostic Tool’s display.

- Verify the ignition is ON, then

press the M button to continue.

Using the Diagnostic Tool

VIEWING ENHANCED DTCS

42 Craftsman 87702

 If the KOER Test was selected, and

the vehicle’s engine is not running,

an advisory message shows on the

Diagnostic Tool’s display.

- Start the vehicle’s engine, then

press the ENTER button to

continue.

2. An “instructional” message shows on the Diagnostic Tool’s display.

Perform test procedures as appropriate.

 If the Continuous Memory or KOEO

test was selected, turn the ignition

OFF, then back ON. Press the

ENTER button to start the test.

- A “One moment please” message

displays while the test is in

progress.

 If the KOER test was selected, press

the ENTER button to continue.

- A “One moment please” message

displays while the test is in

progress.

- Turn the steering wheel to the

right, then release.

- Press and release the brake pedal.

- Cycle the overdrive switch (if equipped).

3. To read the display:

Refer to DISPLAY FUNCTIONS on page 9 for a description of

LCD display elements.

 A visible icon indicates that the Diagnostic Tool is being

powered through the vehicle’s DLC connector.

 A visible icon indicates that the Diagnostic Tool is linked to

(communicating with) the vehicle’s computer.

 The upper right hand corner of the

display shows the number of the

code currently being displayed, the

total number of codes retrieved.

 The Diagnostic Trouble Code (DTC)

and related code definition are shown

in the lower section of the LCD display.

I/M MONITOR STATUS icons are not displayed when

viewing enhanced DTCs.

In the case of long code definitions, or when viewing

Freeze Frame data, a small arrow is shown in the

upper/lower right-hand corner of the code display area

to indicate the presence of additional information. Use

the button to view the additional information.

Using the Diagnostic Tool

VIEWING ENHANCED DTCS

Craftsman 87702 43

 The Diagnostic Tool will display a

code only if codes are present in the

vehicle’s computer memory. If no

codes are present, a “No Enhanced

DTC’s are presently stored in the

vehicle’s computer” is displayed.

Press the M button to return to

the Ford Enhanced menu.

4. If more than one code was retrieved press the DTC button, as

necessary, to display additional codes one at a time.

 Whenever the Scroll function is used to view additional codes,

the Diagnostic Tool’s communication link with the vehicle’s

computer disconnects. To re-establish communication, press the

POWER/LINK button again.

5. When the last retrieved DTC has been displayed and the DTC

button is pressed, the Diagnostic Tool returns to the “Priority Code”.

 To view additional enhanced DTCs, repeat steps 1 through 4,

above.

 To exit the enhanced mode, press the M button. The

Diagnostic Tool returns to the Main Menu screen.

General Motors/Isuzu Enhanced DTCs

When the Diagnostic Tool enters the “enhanced” mode (and GM is

selected, if prompted), the Diagnostic Tool retrieves enhanced DTCs

from the vehicle’s computer.

1. A “One moment please” message

displays while the Diagnostic Tool

retrieves the selected DTCs.

 If the Diagnostic Tool fails to link to

the vehicle’s computer, a “Linking

Failed” message shows on the

Diagnostic Tool’s display.

- Verify the ignition is ON, then

press the M button to continue.

2. To read the display:

Refer to DISPLAY FUNCTIONS

on page 9 for a description of LCD

display elements.

 A visible icon indicates that the

Diagnostic Tool is being powered

through the vehicle’s DLC connector.

 A visible icon indicates that the

Diagnostic Tool is linked to (communi-

cating with) the vehicle’s computer.

Using the Diagnostic Tool

VIEWING ENHANCED DTCS

44 Craftsman 87702

 The upper right hand corner of the display shows the number of the

code currently being displayed, the total number of codes retrieved.

 The Diagnostic Trouble Code (DTC) and related code definition

are shown in the lower section of the LCD display.

I/M MONITOR STATUS icons are not displayed when

viewing enhanced DTCs.

In the case of long code definitions, or when viewing Freeze

Frame data, a small arrow is shown in the upper/lower

right-hand corner of the code display area to indicate the

presence of additional information. Use the button to

view the additional information.

 The Diagnostic Tool will display a

code only if codes are present in the

vehicle’s computer memory. If no

codes are present, a “No Enhanced

DTC’s are presently stored in the

vehicle’s computer” is displayed.

Press the M button to return to

the GM Enhanced menu.

3. If more than one code was retrieved press the DTC button, as

necessary, to display additional codes one at a time.

 Whenever the Scroll function is used to view additional codes,

the Diagnostic Tool’s communication link with the vehicle’s

computer disconnects. To re-establish communication, press the

POWER/LINK button again.

4. When the last retrieved DTC has been displayed and the DTC

button is pressed, the Diagnostic Tool returns to the “Priority Code”.

 To view additional enhanced DTCs, repeat steps 1 through 4,

above.

 To exit the enhanced mode, press the M button. The

Diagnostic Tool returns to the Main Menu screen.

Honda/Acura Enhanced DTCs

When the Diagnostic Tool enters the

“enhanced” mode (and Honda is selected, if

prompted), the Diagnostic Tool retrieves

enhanced DTCs from the vehicle’s

computer.

1. A “One moment please” message

displays while the Diagnostic Tool

retrieves the selected DTCs.

 If the Diagnostic Tool fails to link to

the vehicle’s computer, a “Linking

Failed” message shows on the

Diagnostic Tool’s display.

Using the Diagnostic Tool

VIEWING ENHANCED DTCS

Craftsman 87702 45

- Verify the ignition is ON, then press the M button to continue.

2. To read the display:

Refer to DISPLAY FUNCTIONS on page 9 for a description of

LCD display elements.

 A visible icon indicates that the Diagnostic Tool is being

powered through the vehicle’s DLC connector.

 A visible icon indicates that the Diagnostic Tool is linked to

(communicating with) the vehicle’s computer.

 The upper right hand corner of the

display shows the number of the

code currently being displayed, the

total number of codes retrieved.

 The Diagnostic Trouble Code (DTC)

and related code definition are

shown in the lower section of the

LCD display.

I/M MONITOR STATUS icons are not displayed when

viewing enhanced DTCs.

In the case of long code definitions, or when viewing

Freeze Frame data, a small arrow is shown in the

upper/lower right-hand corner of the code display area

to indicate the presence of additional information. Use

the button to view the additional information.

 The Diagnostic Tool will display a

code only if codes are present in the

vehicle’s computer memory. If no

codes are present, a “No Enhanced

DTC’s are presently stored in the

vehicle’s computer” is displayed.

Press the M button to return to the

Main Menu.

3. If more than one code was retrieved press the DTC button, as

necessary, to display additional codes one at a time.

 Whenever the Scroll function is used to view additional codes,

the Diagnostic Tool communication link with the vehicle’s

computer disconnects. To re-establish communication, press the

POWER/LINK button again.

4. When the last retrieved DTC has been displayed and the DTC

button is pressed, the Diagnostic Tool returns to the “Priority Code”.

 To view additional enhanced DTCs, repeat steps 1 through 4, above.

 To exit the enhanced mode, press the M button. The

Diagnostic Tool returns to the Main Menu screen.

Using the Diagnostic Tool

VIEWING ENHANCED DTCS

46 Craftsman 87702

Toyota/Lexus Enhanced DTCs

When the Diagnostic Tool enters the

“enhanced mode” (and Toyota is selected,

if prompted), the Diagnostic Tool retrieves

enhanced DTCs from the vehicle’s

computer.

1. A “One moment please” message

displays, while the Diagnostic Tool

retrieves the selected DTCs.

 If the Diagnostic Tool fails to link to

the vehicle’s computer, a “Linking

Failed” message shows on the

Diagnostic Tool’s Display.

- Verify the ignition is ON, then

press the M button to continue.

2. To read the display:

Refer to DISPLAY FUNCTIONS on page 9 for a description of

LCD display elements.

 A visible icon indicates that the Diagnostic Tool is being

powered through the vehicle’s DLC connector.

 A visible icon indicates that the Diagnostic Tool is linked to

(communicating with) the vehicle’s computer.

 The upper right hand corner of the

display shows the number of the

code currently being displayed, the

total number of codes retrieved.

 The Diagnostic Trouble Code (DTC)

and related code definition are

shown in the lower section of the

LCD display.

I/M MONITOR STATUS icons are not displayed when

viewing enhanced DTCs.

In the case of long code definitions, or when viewing

Freeze Frame data, a small arrow is shown in the

upper/lower right-hand corner of the code display area

to indicate the presence of additional information. Use

the button to view the additional information.

 The Diagnostic Tool will display a

code only if codes are present in the

vehicle’s computer memory. If no

codes are present, a “No Enhanced

DTC’s are presently stored in the

vehicle’s computer” is displayed.

Press the M button to return to

the Toyota Enhanced menu.

Using the Diagnostic Tool

VIEWING ABS DTCs

Craftsman 87702 47

3. If more than one code was retrieved press the DTC button, as

necessary, to display additional codes one at a time.

 Whenever the Scroll function is used to view additional codes,

the Diagnostic Tool’s communication link with the vehicle’s

computer disconnects. To re-establish communication, press the

POWER/LINK button again.

4. When the last retrieved DTC has been displayed and the DTC

button is pressed, the Diagnostic Tool returns to the “Priority Code”.

 To view additional enhanced DTCs, repeat steps 1 through 4,

above.

 To exit the enhanced mode, press the M button. The

Diagnostic Tool returns to the Main Menu screen.

VIEWING ABS DTCs

Refer to VEHICLE APPLICATIONS – MAKES COVERED on

page 71 for vehicles covered.

Reading ABS DTCs

1. From the OBD2 DTC screen or Enhanced DTC screen, press the

ABS button.

 If no OBD2 DTCs were retrieved, or

only generic DTCs were retrieved, the

Select Manufacturer screen displays.

Use the DOWN button to highlight

the appropriate manufacturer, then

press the ENTER button to

continue, or, highlight Exit and press

the ENTER button to return to the

previous Menu.

 The Diagnostic Tool will start a check

of the vehicle’s computer to determine

which type of communication protocol

it is using. When the Diagnostic Tool

identifies the computer’s communica-

tion protocol, a communication link is

established.

2. A "One moment please" message displays while the Diagnostic Tool

retrieves the selected DTCs.

 If the vehicle does not support ABS

communication, an advisory message

shows on the Diagnostic Tool’s

display. Press the M button to

return to the Main Menu display.

Using the Diagnostic Tool

VIEWING ABS DTCs

48 Craftsman 87702

 If the Diagnostic Tool fails to link to the

vehicle’s computer, a “Linking Failed”

message shows on the Diagnostic

Tool’s display.

- Verify the connection at the DLC,

and verify the ignition is ON.

- Turn the ignition OFF, wait 5 seconds, then turn back ON to reset

the computer.

3. To read the display:

Refer to DISPLAY FUNCTIONS on page 9 for a description of

LCD display elements.

 A visible icon indicates that the Diagnostic Tool is being

powered through the vehicle’s DLC connector.

 A visible icon indicates that the Diagnostic Tool is linked to

(communicating with) the vehicle’s computer.

 The upper right hand corner of the

display shows the number of the

code currently being displayed, the

total number of codes retrieved.

 The Diagnostic Trouble Code (DTC)

and related code definition are

shown in the lower section of the

LCD display.

If the definition for the currently

displayed code is not available, an

advisory message shows on the

Diagnostic Tool’s display.

I/M MONITOR STATUS icons are

not displayed when viewing ABS

DTCs.

In the case of long code definitions, a small arrow is shown in

the upper/lower right-hand corner of the code display area to

indicate the presence of additional information. Use the

DOWN button to view the additional information.

 The Diagnostic Tool will display a

code only if codes are present in the

vehicle’s computer memory. If no

codes are present, a "No ABS DTC’s

are presently stored in the vehicle’s

computer" is displayed. Press the M

button to return to the previous

Menu.

4. If more than one code was retrieved press the DTC button, as

necessary, to display additional codes one at a time.

Using the Diagnostic Tool

ERASING DIAGNOSTIC TROUBLE CODES (DTCs)

Craftsman 87702 49

 Whenever the Scroll function is used to view additional codes,

the Diagnostic Tool’s communication link with the vehicle’s

computer disconnects. To re-establish communication, press the

POWER/LINK button again.

5. When the last retrieved DTC has been displayed and the DTC

button is pressed, the Diagnostic Tool returns to the “Priority Code”.

 To exit the enhanced mode, press the M button. The

Diagnostic Tool returns to the Main Menu screen.

ERASING DIAGNOSTIC TROUBLE CODES (DTCs)

When the Diagnostic Tool’s ERASE function is used to

erase DTCs from the vehicle's on-board computer,

"Freeze Frame" data and manufacturer-specific-enhanced

data are also erased. "Permanent" DTCs ARE NOT erased

by the ERASE function.

If you plan to take the vehicle to a Service Center for repair, DO NOT

erase the codes from the vehicle's computer. If the codes are erased,

valuable information that might help the technician troubleshoot the

problem will also be erased.

Erase DTCs from the computer's memory as follows:

When DTCs are erased from the vehicle's computer memory, the

I/M Readiness Monitor Status program resets the status of all

Monitors to a not run "flashing" condition. To set all of the Monitors

to a DONE status, an OBD2 Drive Cycle must be performed.

Refer to your vehicle's service manual for information on how to

perform an OBD2 Drive Cycle for the vehicle under test.

The Diagnostic Tool must be connected to the vehicle’s DLC

to erase the codes from the computer’s memory. If you press

the ERASE button when the Diagnostic Tool is not

connected to the vehicle’s DLC, the erase instruction screen

displays.

1. If not connected already, connect the

Diagnostic Tool to the vehicle's DLC,

and turn the ignition "On.” (If the

Diagnostic Tool is already connected

and linked to the vehicle's computer,

proceed directly to step 3. If not,

continue to step 2.)

2. Perform the Code Retrieval procedure

as described on page 33.

 To erase OBD2 DTCs: Wait until

the codes are displayed on the

Diagnostic Tool’s LCD and then

proceed to step 3.

Using the Diagnostic Tool

ABOUT REPAIRSOLUTIONS®

50 Craftsman 87702

 To erase Enhanced or ABS DTCs: Perform the Code Retrieval

procedure for Enhanced DTCs as described on page 39 or for

ABS DTCs as described on page 47. Wait until the codes are

displayed on the Diagnostic Tool’s LCD and then proceed to

step 3.

3. Press and release the ERASE button. A confirmation message

shows on the LCD display.

 If you are sure you want to proceed,

use the DOWN button to

highlight YES, then press the

ENTER button.

- If you do not want to continue

with the erase process, use the

DOWN button to highlight

NO, then press the ENTER

button.

4. If you chose to erase DTCs, a progress

screen displays while the erase function

is in progress.

 If the erase was successful, a

confirmation message shows on the

display. Press the POWER/LINK

button to re-link the Tool to the vehicle.

 If the erase was not successful, an

advisory message shows on the

display indicating the erase request

was sent to the vehicle’s computer.

Erasing DTCs does not fix the problem(s) that caused the code(s)

to be set. If proper repairs to correct the problem that caused the

code(s) to be set are not made, the code(s) will appear again (and

the check engine light will illuminate) as soon as the vehicle is

driven long enough for its Monitors to complete their testing.

ABOUT REPAIRSOLUTIONS®

RepairSolutions® is a web-based service created to assist both the do-

it-yourselfer and professional technicians in quickly and accurately

diagnosing and repairing today’s vehicles. RepairSolutions® allows you

to view, save, and email the diagnostic data retrieved from a vehicle’s

on-board computer(s) using the Diagnostic Tool. RepairSolutions® also

provides access to an extensive knowledge database including:

 Verified Fixes – Find the most likely fixes reported and verified by

ASE Technicians for the retrieved DTCs.

 Step-By-Step Repair Instructions – View available repair

instructions to properly perform the fix.

 How-To-Repair Videos – Watch repair video tutorials for valuable

repair tips.

Using the Diagnostic Tool

I/M READINESS TESTING

Craftsman 87702 51

 Technical Service Bulletins – Research known problems reported

by vehicle manufacturers.

 Safety Recalls – Research known safety concerns applicable to a

vehicle.

And much more. Please visit www.innova.com for additional information.

Hardware Requirements:

 Diagnostic Tool

 Mini USB Cable (included with tool)

Minimum System Operating Requirements:

 Windows® PC System

 Windows® XP, Windows® Vista, or Windows® 7

 128 MD Ram

 Pentium III Processor

 One available USB port

 Internet Connection

 Internet Explorer 5.5, Netscape 7.0 or Firefox 1.0 browser

Accessing RepairSolutions®

1. Link your Diagnostic Tool to a vehicle and retrieve diagnostic data

(refer to CODE RETRIEVAL PROCEDURE on page 33 for details).

2. Visit www.innova.com, download and install the latest

RepairSolutions® software for you Diagnostic Tool. Select the

Support tab, then choose Download.

3. Connect the Diagnostic Tool to your PC using a Mini USB cable

(cable included).

 Your default web browser launches automatically and connects

to the www.innova.com website.

4. Login to your RepairSolutions® account using your registered Email

Address and Password.

If you have not yet established an account, you must

register for a FREE RepairSolutions® account before

proceeding.

I/M READINESS TESTING

I/M is an Inspection and Maintenance program legislated by the

Government to meet federal clean-air standards.

The program requires that a vehicle be taken periodically to an

Emissions Station for an "Emissions Test" or "Smog Check,” where the

emissions-related components and systems are inspected and tested

for proper operation. Emissions Tests are generally performed once a

year, or once every two years.

Using the Diagnostic Tool

I/M READINESS TESTING

52 Craftsman 87702

On OBD2 systems, the I/M program is enhanced by requiring vehicles

to meet stricter test standards. One of the tests instituted by the Federal

Government is called I/M 240. On I/M 240, the vehicle under test is

driven under different speeds and load conditions on a dynamometer for

240 seconds, while the vehicle's emissions are measured.

Emissions tests vary depending on the geographic or regional

area in which the vehicle is registered. If the vehicle is

registered in a highly urbanized area, the I/M 240 is probably

the type of test required. If the vehicle is registered in a rural

area, the stricter “dynamometer type” test may not be required.

I/M Readiness Monitors

I/M Readiness shows whether the various emissions-related systems on

the vehicle are operating properly and are ready for Inspection and

Maintenance testing.

State and Federal Governments enacted Regulations, Procedures and

Emission Standards to ensure that all emissions-related components

and systems are continuously or periodically monitored, tested and

diagnosed whenever the vehicle is in operation. It also requires vehicle

manufacturers to automatically detect and report any problems or faults

that may increase the vehicle's emissions to an unacceptable level.

The vehicle's emissions control system consists of several components

or sub-systems (Oxygen Sensor, Catalytic Converter, EGR, Fuel

System, etc.) that aid in reducing vehicle emissions.

To have an efficient Vehicle Emission Control System, all the emissions-

related components and systems must work correctly whenever the

vehicle is in operation.

To comply with State and Federal Government regulations, vehicle

manufacturers designed a series of special computer programs called

"Monitors" that are programmed into the vehicle's computer. Each of

these Monitors is specifically designed to run tests and diagnostics on a

specific emissions-related component or system (Oxygen Sensor,

Catalytic Converter, EGR Valve, Fuel System, etc.) to ensure their

proper operation. Currently, there are a maximum of eleven Monitors

available for use.

Each Monitor has a specific function to test

and diagnose only its designated emissions-

related component or system. The names of

the Monitors (Oxygen Sensor Monitor, Catalyst

Monitor, EGR Monitor, Misfire Monitor, etc.)

describe which component or system each

Monitor is designed to test and diagnose.

To learn more about Emissions Inspection and Maintenance

(I/M) Readiness Monitors, see OBD2 MONITORS on page 23.

Using the Diagnostic Tool

I/M READINESS TESTING

Craftsman 87702 53

Emissions Inspection and Maintenance (I/M) Readiness

Monitor Status Information

I/M Readiness Monitor Status shows which of the vehicle's Monitors

have run and completed their diagnosis and testing, and which ones

have not yet run and completed testing and diagnosis of their

designated sections of the vehicle's emissions system.

 If a Monitor was able to meet all the conditions required to enable it

to perform the self-diagnosis and testing of its assigned engine

system, it means the monitor "HAS RUN.”

 If a Monitor has not yet met all the conditions required for it to

perform the self-diagnosis and testing of its assigned engine system;

it means the Monitor "HAS NOT RUN.”

The Monitor Run/Not Run status does not show whether

or not a problem exists in a system. Monitor status only

indicates whether a particular Monitor has or has not run

and performed the self-diagnosis and testing of its

associated system.

Performing I/M Readiness Quick Check

When a vehicle first comes from the factory, all Monitors

indicate a “HAVE RUN” status. This indicates that all Monitors

have run and completed their diagnostic testing. The “HAVE

RUN” status remains in the computer's memory, unless the

Diagnostic Trouble Codes are erased or the vehicle's

computer memory is cleared.

The Diagnostic Tool allows you to retrieve Monitor/System Status

Information to help you determine if the vehicle is ready for an

Emissions Test (Smog Check). In addition to retrieving Diagnostic

Trouble Codes, the Diagnostic Tool also retrieves Monitor Run/Not Run

status. This information is very important since different areas of the

state/country have different emissions laws and regulations concerning

Monitor Run/Not Run status.

Before an Emissions Test (Smog Check) can be performed, your

vehicle must meet certain rules, requirements and procedures legislated

by the Federal and state (country) governments where you live.

1. In most areas, one of the requirements that must be met before a

vehicle is allowed to be Emissions Tested (Smog Checked) is that

the vehicle does not have any Diagnostic Trouble Codes present

(with the exception of PENDING Diagnostic Trouble Codes).

2. In addition to the requirement that no Diagnostic Trouble Codes be

present, some areas also require that all the Monitors that a

particular vehicle supports indicate a "Has Run" status condition

before an Emissions Check may be performed.

3. Other areas may only require that some (but not all) Monitors

indicate a "Has Run" status before an Emissions Test (Smog Check)

may be performed.

Using the Diagnostic Tool

I/M READINESS TESTING

54 Craftsman 87702

Monitors with a "Has Run" status indicate that all the

required conditions they needed to perform diagnosis and

testing of their assigned engine area (system) have been

met, and all diagnostic testing has completed successfully.

Monitors with a "Has Not Run" status have not yet met the

conditions they need to perform diagnosis and testing of

their assigned engine area (system), and have not been

able to perform diagnostic testing on that system.

The green, yellow and red LEDs provide a quick way to help you

determine if a vehicle is ready for an Emissions Test (Smog Check).

Follow the instructions below to perform the Quick Check.

Perform the CODE RETRIEVAL PROCEDURE as described on page

33, then interpret the LED indications as follows:

Interpreting I/M Readiness Test Results

1. GREEN LED - Indicates that all engine

systems are "OK" and operating

normally (all Monitors supported by the

vehicle have run and performed their

self-diagnostic testing). The vehicle is

ready for an Emissions Test (Smog

Check), and there is a good possibility

that it can be certified.

2. YELLOW LED - Determine from the

CODE RETRIEVAL PROCEDURE

(page 33) which of the two possible

conditions is causing the yellow LED to light.

 If a "PENDING" Diagnostic Trouble

Code is causing the yellow LED to

light, it is possible that the vehicle will

be allowed to be tested for emissions

and certified. Currently, most areas

(states / countries) will allow an

Emissions Test (Smog Check) to be

performed if the only code in the

vehicle's computer is a "PENDING"

Diagnostic Trouble Code.

 If the illumination of the Yellow LED is being caused by monitors

that “have not run” their diagnostic testing, then the issue of the

vehicle being ready for an Emissions Test (Smog Check) depends

on the emissions regulations and laws of your local area.

- Some areas require that all

Monitors indicate a "Has Run"

status before they allow an

Emissions Test (Smog Check) to

be performed. Other areas only

require that some, but not all,

Monitors have run their self-

diagnostic testing before an

Emissions Test (Smog Check)

may be performed.

Using the Diagnostic Tool

I/M READINESS TESTING

Craftsman 87702 55

From the code retrieval procedure, determine the status of

each Monitor (a solid Monitor icon shows Monitor "Has Run"

status, a flashing Monitor icon indicates "Has Not Run" status).

Take this information to an emissions professional to

determine (based on your test results) if your vehicle is ready

for an Emissions Test (Smog Check).

3. RED LED - Indicates there is a problem

with one or more of the vehicle's systems.

A vehicle displaying a red LED is definitely

not ready for an Emissions Test (Smog

Check). The red LED is also an indication

that there are Diagnostic Trouble Code(s)

present (displayed on the Diagnostic

Tool's screen). The Multifunction Indicator

(Check Engine) Lamp on the vehicle's

instrument panel will light steady. The

problem that is causing the red LED to

light must be repaired before an Emissions Test (Smog Check) can be

performed. It is also suggested that the vehicle be inspected/repaired

before driving the vehicle further.

4. Flashing Red and Yellow LEDs – Indicates that a "permanent"

code has been set, and one or more of the vehicle’s monitors has

failed its diagnostic testing. A "permanent" DTC can be cleared only

by the vehicle's computer following successful completion of the

monitor that caused the fault to set.

If the Red LED or flashing RED and YELLOW LEDs were obtained,

there is a definite problem present in the system(s). In these cases,

you have the following options.

 Repair the vehicle yourself. If you are going to perform the

repairs yourself, proceed by reading the vehicle service manual

and following all its procedures and recommendations.

 Take the vehicle to a professional to have it serviced. The

problem(s) causing the red LED to light must be repaired before

the vehicle is ready for an Emissions Test (Smog Check).

On some vehicle models, the computer will store non-emission

related DTCs. These DTCs will not command the MIL on since

they are not emission related. If the Diagnostic Tool retrieves

one of these types of codes, the MIL will not be commanded

on, and the Yellow LED on the Diagnostic Tool will be

illuminated. In most cases, these types of codes will not

prevent the Emissions Test from being performed.

Using the I/M Readiness Monitor Status to Confirm a Repair

The I/M Readiness Monitor Status function can be used (after repair of a

fault has been performed) to confirm that the repair has been performed

correctly, and/or to check for Monitor Run Status. Use the following

procedure to determine I/M Readiness Monitor Status:

1. Using retrieved Diagnostic Trouble Codes (DTCs) and code

definitions as a guide, and following manufacturer's repair

procedures, repair the fault or faults as instructed.

Using the Diagnostic Tool

I/M READINESS TESTING

56 Craftsman 87702

2. After the fault or faults have been repaired, connect the Diagnostic

Tool to the vehicle's DLC and erase the code or codes from the

vehicle's computer memory.

 See page 47 for procedures for ERASING DIAGNOSTIC

TROUBLE CODES (DTCs) from the vehicle's on-board computer.

 Write the codes down on a piece of paper for reference before

erasing.

3. After the erase procedure is performed, most of the Monitor icons on

the Diagnostic Tool’s LCD display will be flashing. Leave the

Diagnostic Tool connected to the vehicle, and perform a Trip Drive

Cycle for each "flashing" Monitor:

Misfire, Fuel and Comprehensive Component Monitors run

continuously and their icons will always be on solid, even after

the erase function is performed.

 Each DTC is associated with a specific Monitor. Consult the

vehicle's service manual to identify the Monitor (or Monitors)

associated with the faults that were repaired. Follow the

manufacturer's procedures to perform a Trip Drive Cycle for the

appropriate Monitors.

 While observing the Monitor icons on the Diagnostic Tool’s LCD

display, perform a Trip Drive Cycle for the appropriate Monitor or

Monitors.

If the vehicle needs to be driven in order to perform a Trip

Drive Cycle, ALWAYS have a second person help you.

One person should drive the vehicle while the other

person observes the Monitor icons on the Diagnostic Tool

for Monitor RUN status. Trying to drive and observe the

Diagnostic Tool at the same time is dangerous, and could

cause a serious traffic accident.

4. When a Monitor's Trip Drive Cycle is performed properly, the

Monitor icon on the Diagnostic Tool’s LCD display changes from

"flashing" to "solid,” indicating that the Monitor has run and finished

its diagnostic testing.

 If, after the Monitor has run, the MIL on the vehicle's dash is not

lit, and no stored or pending codes associated with that

particular Monitor are present in the vehicle's computer, the

repair was successful.

 If, after the Monitor has run, the MIL on the vehicle's dash lights

and/or a DTC associated with that Monitor is present in the

vehicle's computer, the repair was unsuccessful. Refer to the

vehicle's service manual and recheck repair procedures.

Additional Functions

PERFORMING A SYSTEM VOLTAGE CHECK

Craftsman 87702 57

PERFORMING A SYSTEM VOLTAGE CHECK

The Diagnostic Tool can perform a check of the vehicle’s battery and

charging system to ensure the system is operating within acceptable

limits. You can perform a battery check only, or a charging system

(battery and alternator) check.

To perform a battery check ONLY:

1. With the Diagnostic Tool on the Code

Retrieval screen, press and release the

M button.

 The Main Menu displays.

2. Use the DOWN button to highlight

System Voltage Check, then press the

ENTER button.

 A “One moment please” message displays, while the Diagnostic

Tool retrieves the requested information.

3. When the battery check is complete, a

results screen displays the current

Battery Voltage, and indicates whether

or not the voltage is within acceptable

limits. The System Status LEDs provide

a PASS/FAIL indication, as follows:

 Green = PASS

 Yellow = Caution/LOW

 Red = FAIL

4. Press the M button to return to the Main Menu.

To perform a charging system check:

1. Start the engine.

2. With the Diagnostic Tool on the Code

Retrieval screen, press and release the

M button.

 The Main Menu displays.

3. Use the DOWN button to highlight

System Voltage Check, then press the

ENTER button.

 A “One moment please” message

displays, while the Diagnostic Tool

retrieves the requested information.

4. When the battery check is complete, a

results screen displays the current

Battery Voltage.

5. Press the ENTER button to perform the alternator check.

 An instructional screen displays.

Additional Functions

VIEWING VEHICLE INFORMATION

58 Craftsman 87702

6. Press the accelerator pedal to raise

engine speed to 1500~1700 RPM, and

maintain the engine speed for 10

seconds.

 When engine speed is within the

required range, the alternator test

begins. A progress screen shows

the Engine RPM and Count down

(time remaining until the test is

complete).

7. When the alternator check is complete,

a results screen displays the current

Alternator Voltage, and indicates

whether or not the voltage is within

acceptable limits. The System Status

LEDs provide a PASS/FAIL indication,

as follows:

 Green = PASS

 Yellow = Caution/LOW

 Red = FAIL

 If the alternator voltage is less than

9 V, the red, yellow and green

SYSTEM STATUS LEDs will flash

on and off.

8. Press the M button to return to the Main Menu.

VIEWING VEHICLE INFORMATION

The Diagnostic Tool offers three options for retrieving reference

information for the vehicle under test; Vehicle ID, Available Modules

and IPT (In-use Performance Tracking).

Retrieving Vehicle ID Information

The Vehicle ID function is applicable to model year 2000 and

newer OBD2-compliant vehicles.

The Diagnostic Tool can retrieve a list of information (provided by the

vehicle manufacturer), unique to the vehicle under test, from the

vehicle's on-board computer. This information may include:

 The vehicle's VIN number

 The control module identification number

 The vehicle's calibration ID(s). These IDs uniquely identify the

software version(s) for the vehicle's control module(s).

 The Vehicle's Calibration Verification Number(s) (CVNs) required by

ODB2 regulations. CVNs are used to determine if emission-related

calibrations for the vehicle under test have been changed. One or

more CVNs may be returned by the vehicle's computer.

1. While linked to a vehicle, press the M button.

Additional Functions

VIEWING VEHICLE INFORMATION

Craftsman 87702 59

 The Main Menu displays.

2. Use the DOWN button to highlight

Vehicle Info, then press the ENTER

button.

 The Vehicle Info Menu displays.

3. Use the DOWN button to highlight

Vehicle ID, then press the ENTER

button.

4. A "One moment please..." message

displays while the requested information is

retrieved from the vehicle's computer.

The first time the Vehicle ID function is used, it may take several

minutes to retrieve the information from the vehicle's computer.

5. When the retrieval process is completed,

the vehicle ID information is shown on

the Diagnostic Tool’s display. Use the

DOWN button to view the entire list.

6. When you have finished viewing the

retrieved vehicle ID information, press

the M button to exit.

Viewing Available Modules

The Diagnostic Tool can retrieve a list of modules supported by the

vehicle under test.

1. While linked to a vehicle, press the M

button.

 The Main Menu displays.

2. Use the DOWN button to highlight

Vehicle Info, then press the ENTER

button.

 The Vehicle Info Menu displays.

3. Use the DOWN button to highlight

Available Modules, then press the

ENTER button.

4. A "One moment please..." message

displays while the requested information

is retrieved from the vehicle's computer.

5. When the retrieval process is completed,

a complete list of modules supported by

the vehicle under test is shown on the

Diagnostic Tool’s display. Use the

DOWN button to view the entire list.

Additional Functions

USING THE DTC LIBRARY

60 Craftsman 87702

6. When you have finished viewing the list of available modules, press

the M button to exit.

Viewing In-use Performance Tracking (IPT)

The Diagnostic Tool can retrieve In-use Performance Tracking (IPT)

statistics for monitors supported by the vehicle under test. Two values

are returned for each monitor; the number of times that all conditions

necessary for a specific monitor to detect a malfunction have been

encountered (XXXCOND), and the number of times that the vehicle has

been operated under the specific conditions for the monitor (XXXCOMP).

Statistics are also provided for the number of times the vehicle has been

operated in OBD monitoring conditions (OBDCOND), and the number of

times the vehicle’s engine has been started (IGNCNTR).

1. While linked to a vehicle, press the M

button.

 The Main Menu displays.

2. Use the DOWN button to highlight

Vehicle Info, then press the ENTER

button.

 The Vehicle Info Menu displays.

3. Use the DOWN button to highlight

IPT, then press the ENTER button.

4. A “One moment please . . .” message

displays while the requested information

is retrieved from the vehicle’s computer.

 If In-use Performance Tracking is

not supported by the vehicle under

test, an advisory message shows on

the Diagnostic Tool’s display. Press

the M button to exit.

5. When the retrieval process is completed,

In-use Performance Tracking statistics

for monitors supported by the vehicle

under test are shown on the Diagnostic

Tool’s display. Use the DOWN button

to view the entire list.

6. When you have finished viewing the

statistics, press the M button to exit.

USING THE DTC LIBRARY

The DTC Library function lets you search the library of OBD2 DTC

definitions.

1. While linked to a vehicle, press and release the M button.

Additional Functions

USING THE DTC LIBRARY

Craftsman 87702 61

 The Main Menu displays.

2. Use the DOWN button to highlight

DTC Library in the Menu, then press

the ENTER button.

 The Enter DTC screen displays. The

screen shows the code “P0001”,

with the “P” highlighted.

3. Use the DOWN button, as necessary,

to scroll to the desired DTC type

(P=Powertrain, U=Network, B=Body,

C=Chassis), then press the DTC

button.

 The selected character displays “solid”, and the next character is

highlighted.

4. Select the remaining characters in the DTC in the same way,

pressing the DTC button to confirm each character. When you

have selected all the DTC characters, press the ENTER button

to view the DTC definition.

 If you entered a “Generic” DTC

(DTCs that start with “P0”, “P2” and

some “P3”):

- The selected DTC and DTC

definition (if available), show on

the Diagnostic Tool’s LCD

display.

 If you entered a “Manufacturer-

Specific” DTC (DTCs that start with

“P1” and some “P3”):

- The “Select Manufacturer” screen

displays.

- Use the DOWN button, as

necessary, to highlight the appro-

priate manufacturer, then press

the ENTER button to display

the correct DTC for your vehicle.

If a definition for the DTC you

entered is not available, an

advisory message shows on the

Diagnostic Tool’s display.

5. If you wish to view definitions for additional DTCs, press the ENTER

button to return to the DTC Library screen, and repeat steps 2

and 3.

6. When all desired DTCs have been viewed, press the M button to

exit the DTC Library.

Additional Functions

VIEWING THE FIRMWARE VERSION - ADJUSTMENTS AND SETTINGS

62 Craftsman 87702

VIEWING THE FIRMWARE VERSION

The Firmware Version function displays the firmware version,

bootloader version and database version for the Diagnostic Tool.

1. While linked to a vehicle, press and

release the M button.

 The Main Menu displays.

2. Use the DOWN button to highlight

Firmware Version in the Menu, then

press the ENTER button.

 The Firmware Version screen displays.

 The screen shows the Diagnostic

Tool’s current firmware version,

bootloader version and data base

version.

3. Press the M button to return to the

Menu.

ADJUSTMENTS AND SETTINGS

The Diagnostic Tool lets you make several adjustments and settings to

configure the Diagnostic Tool to your particular needs. It also contains

an OBD2 DTC Library that allows you to search for DTC definitions. The

following functions, adjustments and settings can be performed when

the Diagnostic Tool is in “MENU Mode”:

 Adjust Brightness: Adjusts the brightness of the LCD display

screen.

 Audible Tone: Turns the Diagnostic Tool’s audible tone “on” and

“off.” When turned “on,” a tone sounds each time a button is pressed.

 Display Backlight: Turns the display backlight on and off.

 Select Language: Sets the display language for the Diagnostic Tool

to English, French or Spanish.

 Unit of Measurement: Sets the Unit of Measurement for the

Diagnostic Tool’s display to USA or Metric.

Adjustments and settings can be made only when the

Diagnostic Tool is NOT connected to a vehicle.

To enter the MENU Mode:

1. With the Diagnostic Tool on the Code

Retrieval screen, press the M button.

 The Main Menu displays.

Additional Functions

ADJUSTMENTS AND SETTINGS

Craftsman 87702 63

2. Use the DOWN button to highlight

Tool Settings, then press the ENTER

button.

 The Tool Setting Menu displays.

3. Make adjustments and settings as

described in the following paragraphs.

Adjusting Display Brightness

1. Use the DOWN button to highlight

Adjust Brightness in the Menu, then

press the ENTER button.

 The Adjust Brightness screen dis-

plays.

 The Brightness field shows the

current brightness setting, from 1-4.

2. Press the DOWN button to increase

the brightness of the LCD display (make

the display lighter).

 When the maximum brightness

setting is reached and the DOWN

button is pressed, the display returns

to the minimum brightness setting.

3. When the desired brightness is obtained, press the ENTER

button to save your changes and return to the Menu.

To exit the Adjust Brightness screen and return to the Menu

without making changes, press the M button.

Enabling the Audible Tone

1. Use the DOWN button to highlight

Audible Tone in the Menu, then press

the ENTER button.

 The Audible Tone screen displays.

2. Press the DOWN button, as

necessary, to highlight ON or OFF as

desired.

3. When the desired option is selected,

press the ENTER button to save your

changes and return to the Menu.

To exit the Audible Tone screen and return to the Menu

without making changes, press the M button.

Additional Functions

ADJUSTMENTS AND SETTINGS

64 Craftsman 87702

Using the Backlight

1. Use the DOWN button to highlight

Display Backlight in the Menu, then

press the ENTER button.

 The Display Backlight screen displays.

2. Press the DOWN button, as

necessary, to select the desired

backlight mode, either ON or OFF.

3. When the desired backlight mode is

selected, press the ENTER button to

save your changes.

 The display returns to the Menu, and the backlight turns “on” or

“off” as selected.

To exit the Display Backlight screen and return to the Menu

without making changes, press the M button.

Selecting the Display Language

1. Use the DOWN button to highlight

Select Language in the Menu, then

press the ENTER button.

 The Select Language screen displays.

 The currently selected display

Language is highlighted.

2. Press the DOWN button, as

necessary, to highlight the desired

display language.

3. When the desired display language is

highlighted, press the ENTER button to

save your changes and return to the Menu

(shown in the selected display language).

To exit the Select Language screen and return to the Menu

without making changes, press the M button.

Setting the Unit of Measurement

1. Use the DOWN button to highlight

Unit of Measurement in the Menu,

then press the ENTER button.

Additional Functions

VIEWING DTCs IN THE TOOL’S MEMORY

Craftsman 87702 65

 The Unit of Measurement screen

displays.

 The currently selected Unit of

Measurement is highlighted.

2. Press the DOWN button, as

necessary, to highlight the desired Unit

of Measurement.

3. When the desired Unit of Measurement value is selected, press the

ENTER button to save your changes and return to the Menu.

To exit the Unit of Measurement screen and return to the

Menu without making changes, press the M button.

Exiting the MENU Mode

1. Press the M button.

 The LCD display returns to the DTC screen (if data is currently

stored in the Diagnostic Tool’s memory) or the “To Link” screen

(if no data is stored).

VIEWING DTCs IN THE TOOL’S MEMORY

To view DTCs and other diagnostic data stored in the Diagnostic Tool’s

memory, do the following:

1. With the DLC cable not connected to

the Diagnostic Tool, press the

POWER/LINK button to turn the

Tool “on.”

2. If DTCs are present in the Diagnostic

Tool’s memory, the first stored DTC will

display on the screen.

 If more than one DTC is present,

use the DTC button to scroll

through the DTCs.

3. Saved Freeze Frame data and monitor

status are also available. Press the DTC

button to view Freeze Frame data

for the “priority” DTC (DTC #1).

4. If no DTCs are stored in the Diagnostic

Tool’s memory, a “No DTCs or Freeze

Frame Data is presently stored in the

tool’s memory” message displays.

Generic (Global) OBD2 PID List

66 Craftsman 87702

The following is a list of Generic (Global) PIDs and their descriptions.

Tool

Display Unit Value PID Description

ACC Pedal D % XXX.X Accelerator Pedal Position D

ACC Pedal E % XXX.X Accelerator Pedal Position E

ACC Pedal F % XXX.X Accelerator Pedal Position F

Air Status - UPS, DNS,

OFF

Commanded Secondary Air Status

Ambient *C /

*F

XXX Ambient Air Temperature

Aux Input

Status

- On / Off Auxiliary Input Status

BARO kPa

/inHg

XXX /

XX.X

Barometric Pressure

Calc LOAD % XXX.X Calculated LOAD Value

CAT Temp 11 *C /

*F

XXXX.X Catalyst Temperature Bank 1-

Sensor 1

CAT Temp 12 *C /

*F

XXXX.X Catalyst Temperature Bank 1-

Sensor 2

CAT Temp 21 *C /

*F

XXXX.X Catalyst Temperature Bank 2-

Sensor 1

CAT Temp 22 *C /

*F

XXXX.X Catalyst Temperature Bank 2-

Sensor 2

Command

EGR

% XXX.X Commanded EGR

Command

EVAP

% XXX.X Commanded Evaporative Purge

Command

TAC

% XXX.X Commanded Throttle Actuator

Dist DTC Clr km

/mile

XXXXX Distance since DTC Cleared

Dist MIL ON km

/mile

s

XXXXX Distance Traveled while MIL ON

ECT *C /

*F

XXX / XXX Engine Coolant Temp

ECU Volts V XX.XXX Control Module Voltage

EGR Error % XXX.X EGR Error

Eng RPM min XXXXX Engine RPM

EQ Ratio - X.XXX Commanded Equivalence Ratio

EQ Ratio 11 - X.XXX Bank 1 - Sensor 1 Equivalence

Ratio

EQ Ratio 12 - X.XXX Bank 1 - Sensor 2 Equivalence

Ratio

EQ Ratio 13 - X.XXX Bank 1 - Sensor 3 Equivalence

Ratio

EQ Ratio 14 - X.XXX Bank 1 - Sensor 4 Equivalence

Generic (Global) OBD2 PID List

Craftsman 87702 67

Tool

Display Unit Value PID Description

Ratio

EQ Ratio 21 - X.XXX Bank 2 - Sensor 1 Equivalence

Ratio

EQ Ratio 22 - X.XXX Bank 2 - Sensor 2 Equivalence

Ratio

EQ Ratio 23 - X.XXX Bank 2 - Sensor 3 Equivalence

Ratio

EQ Ratio 24 - X.XXX Bank 2 - Sensor 4 Equivalence

Ratio

EVAP Press Pa

/in

H2O

XXXX.XX

/XX.XXX

Evap System Vapor Pressure

FP / Vac kPa

/PSI

XXXX.XXX

/XXX.X

Fuel Rail Pressure relative

toVacuum

Fuel Level % XXX.X Fuel Level Input

Fuel Press kPa

/PSI

XXX /

XX.X

Fuel Rail Pressure

Fuel Press kPa

/PSI

XXXXX

/XXXX.X

Fuel Rail Pressure

Fuel Sys 1 - OL Fuel System 1 Status

Fuel Sys 1 - CL Fuel System 1 Status

Fuel Sys 1 - OL-Drive Fuel System 1 Status

Fuel Sys 1 - OL-Fault Fuel System 1 Status

Fuel Sys 1 - CL-Fault Fuel System 1 Status

Fuel Sys 2 - OL Fuel System 2 Status

Fuel Sys 2 - CL Fuel System 2 Status

Fuel Sys 2 - OL-Drive Fuel System 2 Status

Fuel Sys 2 - OL-Fault Fuel System 2 Status

Fuel Sys 2 - CL-Fault Fuel System 2 Status

IAT *C /

*F

XXX / XXX Intake Air Temperature

LOAD Value % XXX.X Absolute Load Value

LTFT B1 % XXX.X Long Term Fuel Trim-Bank 1

LTFT B2 % XXX.X Long Term Fuel Trim-Bank 2

LTFT B3 % XXX.X Long Term Fuel Trim-Bank 3

LTFT B4 % XXX.X Long Term Fuel Trim-Bank 4

MAF g/s ;l

b/min

XXX.XX

/XXXX.X

Air Flow Rate from Mass Air Flow

Sensor

MAP kPa

/PSI

XXX /

XX.X

Intake Manifold Absolute Pressure

MIL On Time hrs,

min

XXXX, XX Engine Run Time while MIL ON

Monitor Status - ICONS on

Display

Monitor Status this Driving Cycle

O2S B1 S1 V X.XXX Bank 1 - Sensor 1

O2S B1 S1 mA X.XXX Bank 1 - Sensor 1 O2S Current

Generic (Global) OBD2 PID List

68 Craftsman 87702

Tool

Display Unit Value PID Description

mA

O2S B1 S1 V V X.XXX Bank 1 - Sensor 1 O2S Voltage

O2S B1 S2 V X.XXX Bank 1 - Sensor 2

O2S B1 S2

mA

mA X.XXX Bank 1 - Sensor 2 O2S Current

O2S B1 S2 V V X.XXX Bank 1 - Sensor 2 O2S Voltage

O2S B1 S3 V X.XXX Bank 1 - Sensor 3

O2S B1 S3

mA

mA X.XXX Bank 1 - Sensor 3 O2S Current

O2S B1 S3 V V X.XXX Bank 1 - Sensor 3 O2S Voltage

O2S B1 S4 V X.XXX Bank 1 - Sensor 4

O2S B1 S4

mA

mA X.XXX Bank 1 - Sensor 4 O2S Current

O2S B1 S4 V V X.XXX Bank 1 - Sensor 4 O2S Voltage

O2S B2 S1 V X.XXX Bank 2 - Sensor 1

O2S B2 S1

mA

mA X.XXX Bank 2 - Sensor 1 O2S Current

O2S B2 S1 V V X.XXX Bank 2 - Sensor 1 O2S Voltage

O2S B2 S2 V X.XXX Bank 2 - Sensor 2

O2S B2 S2

mA

mA X.XXX Bank 2 - Sensor 2 O2S Current

O2S B2 S2 V V X.XXX Bank 2 - Sensor 2 O2S Voltage

O2S B2 S3 V X.XXX Bank 2 - Sensor 3

O2S B2 S3

mA

mA X.XXX Bank 2 - Sensor 3 O2S Current

O2S B2 S3 V V X.XXX Bank 2 - Sensor 3 O2S Voltage

O2S B2 S4 V X.XXX Bank 2 - Sensor 4

O2S B2 S4

mA

mA X.XXX Bank 2 - Sensor 4 O2S Current

O2S B2 S4 V V X.XXX Bank 2 - Sensor 4 O2S Voltage

O2S Location - O2S11 Oxygen Sensor, Bank 1, Sensor 1

O2S Location - O2S12 Oxygen Sensor, Bank 1, Sensor 2

O2S Location - O2S13 Oxygen Sensor, Bank 1, Sensor 3

O2S Location - O2S14 Oxygen Sensor, Bank 1, Sensor 4

O2S Location - O2S21 Oxygen Sensor, Bank 2, Sensor 1

O2S Location - O2S22 Oxygen Sensor, Bank 2, Sensor 1

O2S Location - O2S23 Oxygen Sensor, Bank 2, Sensor 3

O2S Location - O2S24 Oxygen Sensor, Bank 2, Sensor 4

O2S Location - O2S11 Oxygen Sensor, Bank 1, Sensor 1

O2S Location - O2S12 Oxygen Sensor, Bank 1, Sensor 2

O2S Location - O2S21 Oxygen Sensor, Bank 2, Sensor 1

O2S Location - O2S22 Oxygen Sensor, Bank 2, Sensor 2

O2S Location - O2S31 Oxygen Sensor, Bank 3, Sensor 1

O2S Location - O2S32 Oxygen Sensor, Bank 3, Sensor 2

O2S Location - O2S41 Oxygen Sensor, Bank 4, Sensor 1

O2S Location - O2S42 Oxygen Sensor, Bank 4, Sensor 2

Generic (Global) OBD2 PID List

Craftsman 87702 69

Tool

Display Unit Value PID Description

OBD Support - OBD2 OBD Requirements

OBD Support - OBD OBD Requirements

OBD Support - OBD and

OBD2

OBD Requirements

OBD Support - OBD1 OBD Requirements

OBD Support - No OBD OBD Requirements

OBD Support - EOBD OBD Requirements

OBD Support - EOBD and

OBD2

OBD Requirements

OBD Support - EOBD and

OBD

OBD Requirements

OBD Support - EOBD,

OBD and

OBD2

OBD Requirements

OBD Support - JOBD OBD Requirements

OBD Support - JOBD and

OBD2

OBD Requirements

OBD Support - JOBD and

EOBD

OBD Requirements

OBD Support - JOBD,

EOBD and

OBD2

OBD Requirements

PTO Status - On / Off Power Take Off Status

Rel TPS % XXX.X Relative Throttle Position

Spark Adv deg XX Ignition Timing Advance #1

Cylinder

STFT B1 % XXX.X Short Term Fuel Trim-Bank 1

STFT B1 S1 % XXX.X Bank 1 - Sensor 1

STFT B1 S2 % XXX.X Bank 1 - Sensor 2

STFT B1 S3 % XXX.X Bank 1 - Sensor 3

STFT B1 S4 % XXX.X Bank 1 - Sensor 4

STFT B2 % XXX.X Short Term Fuel Trim-Bank 2

STFT B2 S1 % XXX.X Bank 2 - Sensor 1

STFT B2 S2 % XXX.X Bank 2 - Sensor 2

STFT B2 S3 % XXX.X Bank 2 - Sensor 3

STFT B2 S4 % XXX.X Bank 2 - Sensor 4

STFT B3 % XXX.X Short Term Fuel Trim-Bank 3

STFT B4 % XXX.X Short Term Fuel Trim-Bank 4

Time DTC Clr hrs,

min

XXXX, XX Time since DTC Cleared

Time Since

Start

sec XXXX Time Since Engine Start

TPS % XXX.X Absolute Throttle Position

TPS B % XXX.X Absolute Throttle Position B

TPS C % XXX.X Absolute Throttle Position C

Generic (Global) OBD2 PID List

70 Craftsman 87702

Tool

Display Unit Value PID Description

Veh Speed km/h

/

mph

XXX / XXX Vehicle Speed Sensor

Warm-up DTC

Clr

- XXX # Warm-ups since DTC Cleared

Vehicle Applications - ABS

Craftsman 87702 71

VEHICLE APPLICATIONS – MAKES COVERED

The Diagnostic Tool has the ability to retrieve and erase ABS codes. Vehicle

makes supported by the Diagnostic Tool are shown below. Please visit

www.innova.com for a complete list of vehicles covered.

BUICK JEEP

CADILLAC LEXUS

CHEVROLET LINCOLN

CHRYSLER MERCURY

DODGE OLDSMOBILE

FORD PONTIAC

GMC SCION

HUMMER TOYOTA

Glossary

GLOSSARY OF TERMS AND ABBREVIATIONS

72 Craftsman 87702

INTRODUCTION

This Glossary contains definitions for abbreviations and terms you may

find in this manual or in your vehicle service manual.

GLOSSARY OF TERMS AND ABBREVIATIONS

CARB – California Air Resources Board

CCM – Central Control Module

Computer Control System – An electronic control system, consisting

of an on-board computer and related sensors, switches and actuators,

used to ensure peak performance and fuel efficiency while reducing

pollutants in the vehicle’s emissions.

DIY – Do-It-Yourself

DLC – Data Link Connector

Drive Cycle – An extended set of driving procedures that takes into

consideration the various types of driving conditions encountered in real

life.

Driving Condition – A specific environmental or operation condition

under which a vehicle is operated; such as starting the vehicle when

cold, driving at steady speed (cruising), accelerating, etc.

DTC(s) – Diagnostic Trouble Code(s)

EGR – Exhaust Gas Recirculation

System Status – An indication of whether or not a vehicle’s emissions-

related system are operating properly and are ready for Inspection and

Maintenance testing.

EPA – Environmental Protection Agency

EVAP – Evaporative Emissions System

Fault Code – See DTCs

Freeze Frame – A digital representation of engine and/or emissions

system conditions present when a fault code was recorded.

FTP – Fuel Tank Pressure

Generic Code – A DTC that applies to all OBD2 compliant vehicles.

I/M Test / Emissions Test / Smog Check – A functional test of a

vehicle to determine if tailpipe emissions are within Federal/State/Local

requirements.

LCD – Liquid Crystal Display

LED – Light Emitting Diode

LTFT – Long Term Fuel Trim, is a program in the vehicle’s computer

designed to add or subtract fuel from the vehicle to compensate for

operating conditions that vary from the ideal A/F ratio (long term).

Glossary

GLOSSARY OF TERMS AND ABBREVIATIONS

Craftsman 87702 73

Manufacturer Specific Code – A DTC that applies only to OBD2

compliant vehicles made by a specific manufacturer.

MIL – Malfunction Indicator Lamp (also referred to as “Check Engine”

light

OBD1 – On-Board Diagnostics Version 1 (also referred to as “OBD I”)

OBD2 – On-Board Diagnostics Version 2 (also referred to as “OBD II”)

On-Board Computer – The central processing unit in the vehicle’s

computer control system.

PCM – Powertrain Control Module

Pending Code – A code recorded on the “first trip” for a “two-trip” code.

If the fault that caused the code to be set is not detected on the second

trip, the code is automatically erased.

STFT – Short Term Fuel Trim, is a program in the vehicle’s computer

designed to add or subtract fuel from the vehicle to compensate for

operating conditions that vary from the ideal A/F ratio. The vehicle uses

this program to make minor fuel adjustments (fine tune) on a short-term

basis.

Trip Drive Cycle – Vehicle operation that provides the necessary

driving condition to enable a vehicle Monitor to run and complete its

diagnostic testing.

VECI – Vehicle Emission Control Information Decal

Notes

74 Craftsman 87702

Notes

Craftsman 87702 75

Notes

76 Craftsman 87702

Warranty and Servicing

Craftsman 87702 77

CRAFTSMAN TWO YEAR FULL WARRANTY

FOR TWO YEARS from the date of purchase, this product is warranted

against any defects in material or workmanship. A defective product will

receive free repair or replacement if repair is unavailable.

For warranty coverage details, visit the web site: www.craftsman.com

This TWO YEAR warranty is void if this product is ever used while

providing commercial services or if rented to another person. for 90 DAY

commercial and rental use terms, see the Craftsman warranty web page.

This warranty gives you specific legal rights, and you may also have

other rights which vary from state to state.

Sears Brands Management Corporation, Hoffman Estates, IL 60179

REPLACEMENT PARTS

OBD2 Cable MRP #05-0012 Rev. B

USB Cable MRP #13-0012 Rev. A

PC-Link CD MRP #93-0330 Rev. B

Quick Reference Guide MRP #93-0378 Rev. B

For replacement parts, call 1-800-544-4124.