• | 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. |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
---|---|---|---|---|
Courtesy Lamp High Control | B1480 00 | 1, 2, 3, 4 | -- | -- |
Ground | -- | 1, 2, 3, 4 | -- | -- |
1. I/P Compartment Lamp Inoperative 2. Courtesy/Reading Lamps Inoperative 3. Cargo Lamp Inoperative 4. Vanity Mirror Lamps Inoperative |
Battery voltage is applied at all times to the body control module (BCM) from the INT LAMPS Fuse located in the rear fuse block. The BCM then applies this voltage to the following lamps:
• | I/P compartment lamp |
• | Courtesy/reading lamps |
• | Cargo lamp |
• | Vanity mirror lamps |
In the event that any of these lamps were to remain illuminated for more the 20 minutes with the ignition switch in the OFF position, the BCM will deactivate the inadvertent power courtesy lamps circuit to prevent total battery discharge.
Battery voltage must be between 9-16 volts.
The BCM detects a short ground on the inadvertent power courtesy lamp circuit.
The BCM will deactivate the inadvertent voltage to the courtesy lamps.
• | The condition responsible for setting the DTC no longer exists. |
• | A history DTC will clear once the 100 consecutive malfunction free ignition cycles have occurred. |
Interior Lighting Systems Description and Operation
Control Module References for scan tool information
⇒ | If the DTC resets, test the courtesy lamp high control circuit for a short to ground. If the circuit tests normal, replace the BCM. |
⇒ | If the DTC resets, test or replace the component responsible for setting the DTC. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for BCM replacement, setup, and programming |