Important: Always perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

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.

Schematic Reference

Antilock Brake System Schematics

Connector End View Reference

Electrical Information Reference

Scan Tool Reference

Scan Tool Data List for EBCM

1. With the scan tool, select instrument panel special functions Lamp Test. Command the instrument panel lamps ON. Verify ABS lamp illuminates.

⇒	If the ABS lamp does not illuminate, replace the IPC.

2. Replace the EBCM.

Important: Always perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for EBCM and IPC replacement, setup, and programming