Vanity Mirror Lamp Malfunction

Vanity Mirror Lamp Malfunction

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 reading and vanity mirror lamps can be activated individually by the switches integrated within the dome/reading lamp, and vanity mirror. B+ is supplied by the BCM through the dome lamp circuit with the lamps being grounded at G106.


Reference Information
Schematic Reference

Interior Lights Schematics (Interior Lights Schematics)
Connector End View Reference

Component Connector End Views (Component Connector End Views)
Description and Operation

Interior Lighting Systems Description and Operation (Interior Lighting Systems Description and Operation)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information


Circuit/System Verification

Ignition On, fold down the sun visors and verify the vanity lamps illuminate.


Circuit/System Testing

1. Disconnect the harness connector at the appropriate sun visor.
2. Verify that a test lamp illuminates when connected between the ground circuit terminal A and B+.

• If the test lamp does not illuminate, repair the ground circuit for an open/high resistance.

3. Ignition ON, verify that a test lamp illuminates when connected between the control circuit terminal B and ground.

• If the test lamp does not illuminate, test the supply circuit for an open/high resistance or short to ground. If the circuit tests normal, replace the BCM.

4. If all the circuits test normal, replace the appropriate vanity mirror lamp.



Repair Instructions

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

* Vanity Mirror Lamp Replacement (Service and Repair)
* Control Module References (Programming and Relearning) for BCM replacement, setup, and programming