B2615

DTC B2615

Circuit Description
The body control module (BCM) receives a ground signal from the door jamb, liftglass/liftgate, or courtesy lamp switches requesting courtesy/dome lamp illumination. When this occurs, the BCM directly sends a voltage through the courtesy lamp supply voltage circuit illuminating the courtesy/dome lamps.

Conditions for Running the DTC
The battery voltage must be between 9.0-16.0 volts.

Conditions for Setting the DTC
- When the BCM receives a courtesy lamp illumination request signal and the courtesy lamp supply voltage circuit is shorted to ground.
- When the BCM is not receiving a courtesy lamp illumination request signal and the courtesy lamp supply voltage circuit is shorted to voltage or open only to the first splice from the BCM.
- There is a loss of the rear fuse block TBC 3 battery supply voltage to the BCM for more than 1 second.

Action Taken When the DTC Sets
The courtesy /dome lamps will not operate or are always on.

Conditions for Clearing the MIL/DTC
- This DTC will clear on current status after the condition for setting the fault is corrected.
- A history DTC will clear after 100 consecutive ignition cycles without a fault present.
- History and current DTC(s) can be cleared using a scan tool.

Diagnostic Aids
- Perform a visual inspection for loose or poor connections at all related components. Refer to Diagnostic Aids for Circuit Testing and Wiring Repair procedures.
- Only an open circuit up to the first splice from the BCM will set DTC B2615.

Step 1 - 6:

Step 7 - 8:

Test Description
The numbers below refer to the step numbers on the diagnostic table.
2. This step test determines if the problem exists in the wiring.
3. This step test determines if an open exists in the body wiring harness extension harness.
7. After replacement of the BCM you must calibrate the new module for proper operation.