A Symptoms - Antilock Brake System

Important: The following steps must be completed before using the symptom tables.

1. Perform A Diagnostic System Check before using the Symptom Tables in order to verify that all of the following are true:
Diagnostic System Check
^ There are no DTCs set.
^ The EBCM can communicate via the serial data link.

2. Review the system operation in order to familiarize yourself with the system functions. Refer to ABS Operation under Description and Operation.

Visual/Physical Inspection

^ Inspect for aftermarket devices which could affect the operation of the ABS System. Refer to Checking Aftermarket Accessories under Diagrams, Diagnostic Aids.
^ Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
^ Inspect the master cylinder reservoir for the proper brake fluid level.

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent and Poor Connections under Diagrams, Diagnostic Aids.

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:

^ Traction Off Indicator Always On
Traction Off Indicator Always On

^ Traction Off Indicator Inoperative
Symptom Related Diagnostic Procedures

^ ABS Indicator Always On
ABS Indicator Always On

^ ABS Indicator Inoperative
ABS Indicator Inoperative

^ Low Traction Indicator Always On
Low Traction Indicator Always On

^ Low Traction Indicator Inoperative
Low Traction Indicator Inoperative