Pinpoint Test J: The Abs (Anti-Lock Brake System) Warning Indicator Is Never Or Always On

Normal Operation and Fault Conditions
See ABS Warning Indicator. REFER to: Instrument Panel Cluster (IPC) - System Operation and Component Description .

If the ABS warning indicator status message is missing for less than 5 seconds, the IPC defaults the ABS warning indicator to its last state (on or off), based upon the last message received.

If the ABS warning indicator status message is missing for 5 seconds or longer, the IPC defaults the ABS warning indicator on.

Possible Sources
- Communication concern
- ABS
- GWM
- IPC

J1 RETRIEVE THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE IPC (INSTRUMENT PANEL CLUSTER) SELF-TEST
- Ignition ON.
- Using a diagnostic scan tool, perform the IPC self-test.
Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes REFER to DTC Chart: IPC .

No GO to J2

J2 CARRY OUT THE IPC (INSTRUMENT PANEL CLUSTER) INDICATOR LAMP CONTROL ACTIVE COMMAND USING A DIAGNOSTIC SCAN TOOL
- Using a diagnostic scan tool, view the IPC Parameter Identifications (PIDs).
- Select the IPC ABS warning indicator (ABS_LAMP) PID.
- Command the ABS warning indicator on then off. Observe the ABS warning indicator.
Does the ABS warning indicator turn on when commanded on and turn off when commanded off?

Yes GO to J3

No INSTALL a new IPC. Refer to Instrument Panel Cluster (IPC)

J3 CHECK THE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)
- Using a diagnostic scan tool, perform the GWM Continuous Memory Diagnostic Trouble Codes (CMDTCs).
Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes REFER to: Communications Network .

No DIAGNOSE the ABS. REFER to: Anti-Lock Brake System (ABS) and Stability Control .