Reading Lamps Malfunction

Reading Lamps 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.

Diagnostic Fault Information






Circuit/System Description

The body control module (BCM) supplies the dome/reading lamps and sunshade mirror lamps with battery voltage. When switching on the following components the concerning lamps will illuminate:

* Dome/reading lamps
* Sunshade Mirror Lamp - Left
* Sunshade Mirror Lamp - Right

Reference Information
Schematic Reference

Interior Lights Schematics Interior Lights Schematics
Connector End View Reference

Component Connector End Views Hybrid/EV Battery Pack X1 A4
Description and Operation

Interior Lighting Systems Description and Operation Interior Lighting Systems
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/System Verification

Ignition ON, switch the dome/reading lamps or dome/reading lamps - row ON and OFF while observing the lamp. The concerning reading lamp should illuminate when switched ON.

Circuit/System Testing

Reading Lamps Circuit Malfunction
1. Ignition OFF, disconnect the harness connector at the E37F Dome/Reading Lamps - Front.
2. Test for less than 5 ohm between the ground circuit terminal 6 and ground.

• If greater than the specified range, test the ground circuit for an open/high resistance.

3. Ignition ON, test for greater than 11 V between the circuit terminal 1 and the ground circuit terminal 6.

• If less than the specified range, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 BCM.

4. If all circuits test normal, test or replace the E37F Dome/Reading Lamps - Front.

Repair Instructions

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

* Reading Lamp Replacement Service and Repair
* Dome and Reading Lamp Replacement Service and Repair
* Control Module References Control Module References for BCM replacement, setup, and programming