Circuit Description
The instrument panel cluster (IPC) turns the antilock brake system (ABS) indicator ON during the IPC bulb check for approximately 3 seconds when the ignition switch is turned to the ON position. If the electronic brake control module (EBCM) sets a DTC, the EBCM sends the IPC the command to turn the ABS indicator ON.
Test Description
The number below refers to step number on the diagnostic table.
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Antilock Brake System Schematics | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
Using a scan tool in the Instrument Panel (IPC) Special Functions, attempt to turn the antilock brake system (ABS) indicator ON. Did the ABS indicator turn ON? | Go to Step 3 | Go to Step 4 | |
3 | Replace the electronic brake control module (EBCM). Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Is the replacement complete? | Go to Step 7 | -- |
4 |
Is the instrument cluster connectors OK? | Go to Step 6 | Go to Step 5 |
5 | Repair the instrument clusters connectors. Refer to Repairing Connector Terminals in Instrument Panel, Gages and Console. Is the repair complete? | Go to Step 7 | -- |
6 | Replace the IPC. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Is the replacement complete? | Go to Step 7 | -- |
7 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
