• | 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 Lamps Voltage Supply | B2615 00 | 2 | 1 | -- |
|
Voltage for the courtesy lamps is supplied from the Interior Lights Fuse in the instrument panel I/P electrical center to the body control module (BCM). When a door is opened, a signal is applied to the door module. The door module then applies a message to the LAN communication circuit to the BCM. The BCM then applies voltage to the courtesy lamps voltage supply circuit. The courtesy lamps are composed of the following components:
• | Dome lamps |
• | Reading lamps |
• | Cargo Lamps |
The ignition is ON, and the BCM attempts to illuminate the courtesy lamps.
The BCM receives a ground signal on the courtesy lamp voltage supply circuit
The BCM cease attempt to illuminate the courtesy lamps.
The BCM clears this code from current when the fault is removed from the system.
Lighting Systems Connector End Views
Ignition ON, cover the ambient light sensor, vary the interior lamp dimming switch from dim to full bright. The light emitting diode (LED) lamps should dim and then become full bright.
⇒ | If the DTC resets then test for a short to ground in the courtesy lamp voltage supply circuit lamps circuit. If the circuit/connections test normal replace the BCM. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for BCM replacement, setup, and programming |