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 supply voltage circuit. When any door is opened, the jam switch contacts close and the BCM receives a door-open input. If the BCM receives a door lock or unlock input or a rear hatch open input, the BCM will activate the courtesy lamp supply voltage circuit, providing battery voltage to all of the instrument panel (I/P) courtesy lamps, rearview mirror lamps, and rear compartment lamps. The BCM also provides a serial data message to the driver door module (DDM) and front passenger door module (PDM) to apply battery voltage to the exterior courtesy 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 ground in the courtesy lamps voltage supply circuit.
* The BCM detects a short to ground or an open/high resistance in the BCM 3 fuse B+ circuit.
Actions Taken When the DTC Sets
The BCM will not illuminate any courtesy lamps supplied by the courtesy lamps voltage supply 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 BCM 3 fuse 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. Ignition ON, with a scan tool clear all DTCs.
5. Ignition OFF, disconnect the harness connectors at the following components:
* Courtesy/reading lamp - left front
* Courtesy/reading lamp - left rear
* Courtesy/reading lamp - right front
* Courtesy/reading lamp - right rear
* Left footwell lamp
* Right footwell lamp
* Courtesy lamp left rear door
* Courtesy lamp right rear door
6. Operate the vehicle within the conditions for running the DTC and verify the DTC does not reset.
• If the DTC resets, test the appropriate control circuit listed below for a short to ground. If the circuit tests normal, replace the BCM.
* Courtesy/reading lamp - left front terminal A
* Courtesy/reading lamp - left rear terminal A
* Courtesy/reading lamp - right front terminal A
* Courtesy/reading lamp - right rear terminal A
* Left footwell lamp terminal A
* Right footwell lamp terminal A
* Courtesy lamp left rear door terminal A
* Courtesy lamp right rear door terminal A
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.
* Instrument Panel Courtesy Lamp Bulb Replacement (Instrument Panel Courtesy Lamp Bulb Replacement)
* Door Courtesy Lamp and Reflector Replacement (Door Courtesy Lamp and Reflector Replacement)
* Overhead Console Reading Lamp and Bulb Replacement (Service and Repair)
* Control Module References (Programming and Relearning) for BCM replacement, setup, and programming