B2615

DTC B2615

DTC Descriptor
DTC B2615 00
- Passenger Compartment Dimming 2 Circuit

Diagnostic Fault Information

Important: Always perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Initial Inspection and Diagnostic Overview






Circuit/System Description

Voltage for the courtesy lamps is supplied from the CTSY/RF Trim Fuse in the rear 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 lamp
* Puddle lamps
* LED interior lamps control module (-V4U)
* Roof rail lamps

Conditions for Running the DTC

The ignition is ON, and the BCM attempts to illuminate the courtesy lamps.

Conditions for Setting the DTC

The BCM receives a ground signal on the courtesy lamp voltage supply circuit.

Action Taken When the DTC Sets

The BCM cease attempt to illuminate the courtesy lamps.

Conditions for Clearing the DTC

The BCM clears this code from current when the fault is removed from the system.

Circuit/System Verification

Ignition ON, cover the ambient light sensor, vary the interior lamp dimming switch from dim to full bright. The LED lamps should dim and then become full bright.

Circuit/System Testing

1. Disconnect all the courtesy lamps voltage supply circuit lamps related components. Refer to the circuit/system verification for all components that contain the courtesy lamps voltage supply circuit lamps. Verify the DTC B2615 does not set.

• 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.

2. Reconnect each component one at a time and test for the DTC B2615. If the DTC resets, then replace that component.

Repair Instructions

Important: Always perform the Diagnostic Repair Verification after completing the diagnostic procedure.

* Courtesy Lamp Replacement - Rear Quarter
* Roof Console Replacement
* Programming and Relearning for BCM setup, and programming. Programming and Relearning