B2615

DTC B2615

Diagnostic Instructions

* Perform theDiagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* ReviewStrategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.



DTC Descriptor
DTC B2615 00
- Passenger Compartment Dimming 2 Circuit




Diagnostic Fault Information






Circuit/System Description

Battery voltage for the courtesy lamps is supplied at all times, from the CTSY/RF TRN Fuse located in the rear fuse block, to the body control module (BCM). When the BCM receives a signal to command the courtesy lamps ON, it then applies voltage through the courtesy lamps control circuits to the courtesy lamps listed below.

* Center Dome/Map lamp
* Front Dome/Map lamp
* Ignition Key lamp
* I/P Compartment lamp
* Left and right front door courtesy lamps
* Left and right rear compartment courtesy lamps
* Left and right vanity mirror lamps
* Overhead console lamp



Conditions for Running the DTC

* The BCM attempts to illuminate the courtesy lamps.
* Engine ON, the BCM attempts to illuminate the day time running lamps.
* Ignition ON with the right turn signal switch active, the BCM attempts to illuminate the right front turn signal.



Conditions for Setting the DTC

* The BCM detects a short to ground on the courtesy lamp control circuit.
* The BCM detects a short to ground on the right front turn signal control circuit.



Action Taken When the DTC Sets

The BCM will not attempt to activate courtesy lamps or the right front turn signal.


Conditions for Clearing the DTC

* The condition responsible for setting the DTC no longer exists.
* A history DTC will clear once 100 consecutive malfunction ignition cycles have occurred.



Reference Information
Schematic Reference

Interior Lights Schematics (Interior Lights Diagrams)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

Interior Lighting Systems Description and Operation (Interior Lighting Systems Description and Operation)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information


Circuit/System Verification

Ignition ON, command the Courtesy Lamps ON and OFF with a scan tool. The courtesy lamps should turn ON and OFF when changing between commanded states.


Circuit/System Testing

1. Ignition OFF, disconnect the X4 harness connector at the BCM.
2. Verify that a test lamp illuminates between the B+ circuit terminal 2 and ground.

• If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal and the B+ circuit fuse is open, test the courtesy lamp control terminal 1 X6 for a short to ground.

3. Ignition OFF, connect the X4 harness connector to the BCM.
4. Disconnect the harness connectors at all components fed by the courtesy lamp control circuits listed below:

* terminal 1 X6
* terminal 1 X2

5. Ignition ON, clear the DTC with a scan tool.
6. Operate the vehicle within the conditions for running the DTC and verify the DTC does not reset.

• If the DTC resets, test the courtesy lamp control circuits for a short to ground. If the circuits test normal, replace the BCM.

7. Reconnect each component one at a time and verify that the DTC does not reset.

• If the DTC resets, test or replace the component responsible for setting the DTC.




Repair Instructions

Perform theDiagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

* Instrument Panel Compartment Lamp Replacement (Instrument Panel Compartment Lamp Replacement)
* Sunshade Illuminated Mirror Lamp Bulb Replacement (Sunshade Illuminated Mirror Lamp Bulb Replacement)
* Dome Lamp Replacement (Dome Lamp Replacement)
* Rear Compartment Courtesy Lamp Replacement (Rear Compartment Courtesy Lamp Replacement)
* Ignition Lock Cylinder Bulb Replacement (Ignition Lock Cylinder Bulb Replacement)
* Door Lamp Replacement (Door Lamp Replacement)
* Overhead Console Reading Lamp and Bulb Replacement (Overhead Console Reading Lamp and Bulb Replacement)
* Control Module References (Programming and Relearning) for BCM replacement, setup, and programming