For 1990-2009 cars

### 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 provides an overview of each diagnostic category.

### Diagnostic Fault Information

Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance
--- | --- | --- | --- | ---
I/P Compartment Lamp B+ | 1, 2, 3 | 3 | -- | --
I/P Compartment Lamp Ground | -- | 3 | -- | --
1. Reading lamps always Off 2. Sunshade lamps always Off 3. I/P Compartment lamp Always Off

### Circuit/System Description

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

• | Dome/reading lamps

• | Sunshade - left Front

• | Sunshade - right Front

• | I/P 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 scan tool information

### Circuit/System Verification

Ignition ON, observe lamp of the I/P compartment lamp while opening the glove box. The lamp should illuminate when opened.

### Circuit/System Testing

#### I/P Compartment Lamp Circuit Malfunction

1. Ignition OFF, disconnect the harness connector at the E27 I/P Compartment Lamp.
2. Test for less than 5 Ω between the ground circuit terminal 2 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 12 V reference circuit terminal 1 and ground.

⇒ | 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 (BCM).

4. If all circuits test normal, test or replace the E27 I/P Compartment Lamp.

### Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

• | Link xxx I/P Compartment Lamp Bulb Replacement

• | Link xxx I/P Compartment Lamp Replacement

• | Control Module References for BCM replacement, setup, and programming