ABS Indicator Malfunction

ABS Indicator Malfunction

Diagnostic Instructions
^ Perform the [Diagnostic System Check] prior to using this diagnostic procedure.
^ Review [Strategy Based Diagnosis] for an overview of the diagnostic approach. Strategy Based Diagnosis
^ [Diagnostic Procedure Instructions] provides an overview of each diagnostic category.

Circuit/System Description
The instrument panel cluster (IPC) illuminates the Antilock Brake System (ABS) indicator by supplying ground to the lamp. The electronic brake control module (EBCM) sends a serial data messages to the IPC, in order to command the indicator ON or OFF.

Circuit Verification
1. Ignition On, with a scan tool command the IPC display test ON and OFF. The ABS indicator should turn ON and OFF.
> If the ABS indicator does not turn ON and OFF when commanded, replace the IPC.
2. Replace the EBCM.

Repair Instructions
Perform the [Diagnostic Repair Verification] after completing the diagnostic procedure.
[Control Module References] for EBCM or IPC replacement, setup, and programming Programming and Relearning