Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptor
DTC B2615 00 : Passenger Compartment Dimming 2 CircuitDiagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
B+, BCM C4 terminal 2 | B2615 00 | B2615 00 | -- | -- |
Courtesy Lamp Voltage Supply | B2615 00 | 1 | 1 | -- |
Right Front Turn Signal Lamp Supply Voltage | B2615 00 | 2 | 3 | -- |
1. Courtesy lamps malfunction 2. Right front turn signal inoperative 3. Right front turn signal always ON | ||||
Circuit/System Description
Battery voltage for the courtesy lamps is supplied at all times, from the INT LIGHTS Fuse located in the underhood fuse block, to the body control module (BCM). When the BCM receives a signal to command the courtesy lamps ON, it applies voltage through the courtesy lamps supply voltage circuits to the courtesy lamps listed below.
| • | The left and right I/P courtesy lamps |
| • | Dome lamp |
| • | Right front turn signal |
Conditions for Running the DTC
| • | The ignition is ON |
| • | The courtesy lamps must be commanded ON. |
Conditions for Setting the DTC
The BCM detects a short to ground on the courtesy lamp supply voltage circuit.
Action Taken When the DTC Sets
The BCM will deactivate the courtesy lamps.
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 Dimming Schematics
Connector End View Reference
Lighting Systems Connector End Views
Electrical Information Reference
Scan Tool Reference
Circuit/System Verification
Ignition ON, command the Courtesy Lamps ON and OFF with the scan tool. The interior courtesy lamps should turn ON and OFF when changing between commanded states.
Circuit/System Testing
- Ignition OFF, disconnect the C4 harness connector at the BCM.
- Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 2 and ground.
- Ignition OFF, connect the C4 harness connector at the BCM.
- Disconnect the harness connectors at all components fed by the BCM courtesy lamp supply voltage circuits listed below.
- Ignition ON, clear the DTC with a scan tool.
- Operate the vehicle within the conditions for running the DTC and verify the DTC does not reset.
- Reconnect each component one at a time and verify that the DTC does not reset.
- If all circuits and components test normal, replace the BCM.
| ⇒ | 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 control circuit terminal 5 and the right front turn signal for a short to ground. If all circuits and component test normal, replace the BCM |
| • | Terminal 5 C2 |
| - | Left I/P Courtesy Lamp |
| - | Right I/P Courtesy Lamp |
| • | Terminal 1 C6 |
| - | Dome Lamp - Coupe |
| - | Dome/Reading Lamp - Sedan |
| ⇒ | If the DTC resets, test the supply voltage circuits for a short to ground. If the circuits test normal, replace the BCM. |
| ⇒ | If the DTC resets, test or replace the component responsible for setting the DTC. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for BCM replacement, setup, and programming |
