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Reading Lamps Malfunction

Reading Lamps Malfunction

Diagnostic Instructions


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

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

• Diagnostic Procedure Instructions has overviews of all diagnostic categories.


Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Reading Lamps B+

1, 2, 3

1

-

-

Reading Lamps Ground Terminal 6

-

1

-

-

1. Reading Lamps Always OFF

2. Sunshade Lamps Always OFF

3. Instrument Panel Compartment Lamp Always OFF



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 - 2nd row

• Sunshade left Front

• Sunshade right Front

• Instrument panel compartment lamp


Reference Information

Schematic Reference

Interior Lights Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Interior Lighting Systems Description and Operation

Electrical Information Reference


• Circuit Testing

• Connector Repairs

• Testing for Intermittent Conditions and Poor Connections

• Wiring Repairs


Scan Tool Reference

Control Module References for information on diagnostic tools

Circuit/System Verification

Ignition ON, switch the dome/reading lamps or dome/reading lamps - 2nd 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.

• E37A Dome/Reading Lamps harness connector X8

• E37B Dome/Reading Lamps - 2nd Row harness connector X1

2. Verify the following components are switched OFF:

• A3L Sunshade - Left

• A3R Sunshade - Right

• E27 Instrument Panel Compartment Lamp

3. Test for less than 5 Ω between the ground circuit terminal 6 and ground.

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

5. Ignition ON, test for greater than 11 V between the 12 V circuit terminal 1 and the ground circuit terminal 6.

6. If less than the specified value, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 Body Control Module.

7. If all circuits test normal, test or replace the inoperative reading lamp bulb or reading lamp.

• E37A Dome/Reading Lamps

• E37B Dome/Reading Lamps - 2nd Row


Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.


• Reading Lamp Replacement

• Reading Lamp Bulb Replacement

• Dome and Reading Lamp Replacement

• Control Module References for information on BCM replacement, setup, and programming