ABS Indicator Inoperative

Circuit Description
The Instrument Panel Cluster (IPC) turns the ABS indicator on during the IPC bulb check for approximately 3 seconds when the ignition switch is turned to the RUN position. If the Electronic Brake Control Module (EBCM) sets a Diagnostic Trouble Code (DTC) the EBCM sends a class 2 message to the IPC to command the ABS indicator on.

Diagnostic Aids
^ It is very important that a thorough inspection of the wiring and connectors be performed. Failure to carefully and fully inspect wiring and connectors may result in misdiagnosis, causing part replacement with reappearance of the malfunction.
^ Thoroughly inspect any circuitry that may be causing the complaint for the following conditions:
- Backed out terminals
- Improper mating
- Broken locks
- Improperly formed or damaged terminals
- Poor terminal-to-wiring connections
- Physical damage to the wiring harness
^ The following conditions may cause an intermittent malfunction:
- A poor connection
- Rubbed-through wire insulation
- A broken wire inside the insulation
^ If an intermittent malfunction exists refer to Testing for Intermittent and Poor Connections in Diagnostic Aids under Diagrams.