B2615

DTC B2615

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy 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

The body control module (BCM) applies battery voltage to the courtesy lamps through the courtesy lamp control circuit. When any door is opened, the jam switch contacts close and the BCM receives a door-ajar input. If the BCM receives a door lock or unlock input or a rear hatch open input, the BCM will activate the courtesy lamp control circuit, providing battery voltage to all of the instrument panel (I/P) courtesy lamps, rearview mirror lamps, and rear compartment lamps. In the event that any of these lamps were to remain illuminated for more than 20 minutes with the ignition switch in the OFF position, the BCM will deactivate the inadvertent power courtesy lamp control circuit to prevent a total battery discharge condition.


Conditions for Running the DTC

Battery voltage must be between 9-16 volts.


Conditions for Setting the DTC

DTC B2615 00 will set for the following conditions:

* The BCM detects a short to voltage, short to ground, or an open/high resistance in the courtesy lamps control circuit.
* The BCM detects a short to ground or an open/high resistance in the CTSY/TRN SIG RT FRT fuse B+ circuit terminal 2 X4.



Actions Taken When the DTC Sets

The BCM will not illuminate any courtesy lamps supplied by the courtesy lamps control circuit.


Conditions for Clearing the DTC

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



Reference Information
Schematic Reference

Interior Lights Schematics (Interior Lights Schematics)
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 Testing

1. Ignition OFF, disconnect the X4 harness connector at the BCM.
2. Ignition ON, 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.

3. Ignition OFF, connect the X4 harness connector at the BCM.
4. Disconnect the harness connectors at the following components.

* Dome/reading lamps - with CF5
* Dome lamp - front - without CF5
* Dome lamp - rear
* Ignition key cylinder lamp

5. Connect a test lamp between each control circuit terminal listed below and ground.

* Dome/reading lamps terminal 4 - with CF5
* Dome lamp - front terminal 4 - without CF5
* Dome lamp - rear terminal 2
* Ignition key cylinder lamp terminal A

6. Command the Courtesy Lamp ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.

• If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the BCM.
• If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM.

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

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




Repair Instructions

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

* Dome Lamp Replacement (Service and Repair)
* Dome Lamp Bulb Replacement (Service and Repair)
* Ignition Lock Cylinder Bulb Replacement (Service and Repair)
* Reading Lamp Replacement (Service and Repair)
* Control Module References (Programming and Relearning) for BCM replacement, setup, and programming