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, sunshade and instrument panel compartment lamp with battery voltage. When switching on the following components the concerning lamps will illuminate:
* Dome/reading lamps
* Dome/reading lamps - row
* Sunshade - left front
* Sunshade - right front
* Instrument panel compartment lamp
Reference Information
Schematic Reference
Interior Lights Schematics Interior Lights Schematics
Connector End View Reference
Component Connector End Views Sunshade - Left (DH6)
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
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 appropriate reading lamp.
2. Disconnect the negative terminal of the C1 Battery.
3. Test for less than 5 ohms between the ground circuit terminal 6 and ground.
• If greater than the specified range, test the ground circuit for an open/high resistance.
4. Reconnect the negative terminal of the C1 Battery.
5. Ignition ON, test for greater than 11 V between the 12 V 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 Body Control Module.
6. If all circuits test normal, test or replace the E37A Dome/Reading Lamps or E37B Dome/Reading Lamps - 2nd Row.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests
* Reading Lamp Bulb Replacement Service and Repair
* Reading Lamp Replacement Service and Repair
* Dome and Reading Lamp Replacement Dome and Reading Lamp Replacement
* Dome and Reading Lamp Lens Replacement Dome and Reading Lamp Lens Replacement
* Control Module References Control Module References