Pinpoint Test Q: The ABS Warning Indicator Is Never/Always On

Instrumentation, Message Center and Warning Chimes

Pinpoint Test Q: The ABS Warning Indicator Is Never/Always On

Normal Operation

The ABS warning indicator is used to indicate an ABS concern or deactivation of the ABS. The Instrument Cluster (IC), upon receipt of the ABS message from the ABS module over the High Speed Controller Area Network (HS-CAN), turns on the ABS warning indicator.

This pinpoint test is intended to diagnose the following:

- ABS module
- IC



PINPOINT TEST Q: THE ABS WARNING INDICATOR IS NEVER/ALWAYS ON

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Q1 RETRIEVE THE RECORDED DTCs FROM THE ABS MODULE SELF-TEST


- Check for recorded ABS module DTCs from the self-test.
- Are any DTCs recorded?

Yes
REFER to Antilock Brakes / Traction Control Systems to continue diagnosis of the ABS system. Testing and Inspection

No
GO to Q2.

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Q2 CARRY OUT THE IC INDICATOR LAMP ACTIVE COMMAND USING THE SCAN TOOL


- Ignition ON.
- Enter the following diagnostic mode on the scan tool: IC DataLogger.
- Select the IC ABS warning indicator (ABS_LAMP) active command on and off. Observe the ABS warning indicator.
- Does the ABS warning indicator illuminate when selected on, and turn off when selected off?

Yes
INSTALL a new ABS module. TEST the system for normal operation.

No
INSTALL a new IC. REFER to Instrument Cluster (IC) Instrument Cluster (IC). TEST the system for normal operation.

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