PRE-RELEASE
ABS Indicator Malfunction
| ABS Indicator Malfunction |
| Diagnostic Instructions |
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Perform the
Diagnostic System Check - Vehicle
prior to using this diagnostic procedure.
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Review
Strategy Based Diagnosis
for an overview of the diagnostic approach.
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Diagnostic Procedure Instructions
provides an overview of each diagnostic category.
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| 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
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Circuit Testing
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Connector Repairs
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Testing for Intermittent Conditions and Poor Connections
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Wiring Repairs
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Scan Tool Reference
Control Module References for scan tool information
| Circuit/System Verification |
| 1. |
Ignition ON
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| 2. |
Verify that no DTCs have been generated.
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| 3. |
If DTC(s) has (have) been generated:
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| 4. |
See
Diagnostic Trouble Code (DTC) List - Vehicle
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| 5. |
If no DTCs are present:
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| 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.
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| 7. |
If the ABS indication does not come on and go off:
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| 8. |
Replace the instrument cluster.
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| 9. |
If the ABS indication comes on and goes off:
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| 10. |
Verify that the ABS light goes off 5 seconds after ignition ON.
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| 11. |
If the ABS light does not go off:
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| 12. |
Replace the electronic brake control module K17
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| 13. |
If the ABS light goes off:
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| 14. |
All OK.
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| Repair Instructions |
Perform the Diagnostic Repair Verification after completing the repair.
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Instrument Cluster Replacement
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Control Module References
for replacement, programming and setup of instrument cluster and electronic brake control module
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