Symptom Tests: Notes

NOTE: Perform indicated test steps only. Do not perform any other steps in test when directed to test. Return to symptom chart after completing steps indicated.

Failure of a mechanical brake component may not cause ABS warning light to come on or a DTC to be stored. Check basic brake system to diagnose trouble possibilities before testing for following symptoms:

NO COMMUNICATION WITH ABCM
UNABLE TO ENTER SELF-TEST
ABS MISFIRE, TOO SENSITIVE, FIRES ON NORMAL STOP
WHEELS LOCK UP
SOFT OR EXCESSIVE BRAKE PEDAL
LACK OF DECELERATION DURING MEDIUM/HARD BRAKE APPLICATION
VEHICLE PULLS DURING BRAKING
ABS WARNING LIGHT ON WITH SYSTEM PASS
RED BRAKE WARNING LIGHT DOES NOT SELF-CHECK
RED BRAKE WARNING LIGHT STAYS ON WITH IGNITION SWITCH IN RUN POSITION
ABS WARNING LIGHT DOES NOT SELF-CHECK