Service Column Lock Indicator Inoperative

Service Column Lock Indicator Inoperative

Diagnostic Instructions

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

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

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

Circuit/System Description

The instrument panel cluster (IPC) illuminates the Service Column Lock indicator by supplying ground to the lamp. The steering column lock control module (SLCM) sends a serial data messages to the IPC, in order to command the indicator ON or OFF.

Reference Information

Schematic Reference

Column Lock Schematics Column Lock Schematics

Connector End View Reference

Component Connector End Views 5 Bow Lowered Switch (CM7)

Description and Operation

Steering Wheel and Column Description and Operation Description and Operation

Electrical Information Reference

* Circuit Testing Circuit Testing

* Connector Repairs Connector Repairs

* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections

* Wiring Repairs Wiring Repairs

Scan Tool Reference

Control Module References Control Module References for Scan Tool Information

Circuit Verification

Ignition ON, observe the service column lock indicator to turn ON then OFF during the IPC bulb test.

Circuit/System Testing

Ignition On, with a scan tool command the Scan Tool IPC display test ON and OFF. The service column lock indicator should turn ON and OFF.

If the service column lock warning indicator does not turn ON and OFF, replace the IPC.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.

Control Module References Control Module References for SLCM or IPC replacement, setup, and programming