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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 s 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

Ignition ON, the ABS indicator should turn ON. After 5 s the ABS indicator should turn OFF.

Circuit/System Testing

  1. Ignition ON, with a scan tool command the instrument cluster All Indicators test ON and OFF. Verify the ABS indicator turns ON and OFF.
    2. ⇒If the ABS indicator does not turn ON and OFF, replace the P16 Instrument Cluster.
  2. Verify the ABS indicator turns OFF 5 s after ignition ON.
    3. ⇒If the ABS indicator does not turn OFF, replace the K17 Electronic Brake Control Module (EBCM).

Repair Instructions
    • Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
    • Control Module References for instrument cluster or EBCM replacement, setup and programming
   


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