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ABS Indicator Malfunction

ABS Indicator Malfunction

Diagnostic Instructions


• Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

• Review Strategy Based Diagnosis for an overview of the diagnostic approach.

• Diagnostic Procedure Instructions provides an overview of each diagnostic category.


Circuit/System Description

The instrument cluster turns ON the ABS indicator for 5 seconds after ignition ON or when the electronic brake control module (EBCM) detects a fault and sends a serial data message to the instrument cluster commanding the indicator ON.

Reference Information

Schematic Reference

Antilock Brake System Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

ABS Description and Operation

Electrical Information Reference


• Circuit Testing

• Connector Repairs

• Testing for Intermittent Conditions and Poor Connections

• Wiring Repairs


Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification


1. Ignition ON

2. Verify that no DTCs have been generated.

3. If DTC(s) has (have) been generated:

4. See Diagnostic Trouble Code (DTC) List - Vehicle

5. If no DTCs are present:

6. Verify that the ABS indication in the instrument cluster comes on and goes off when you run the function 'All indications On - OFF' using the diagnostic tool.

7. If the ABS indication does not come on and go off:

8. Replace the instrument cluster.

9. If the ABS indication comes on and goes off:

10. Verify that the ABS light goes off 5 seconds after ignition ON.

11. If the ABS light does not go off:

12. Replace the electronic brake control module K17

13. If the ABS light goes off:

14. All OK.


Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.


• Instrument Cluster Replacement

• Control Module References for replacement, programming and setup of instrument cluster and electronic brake control module