Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle |
| • | Review Strategy Based Diagnosis |
DTC Descriptor
DTC B2615 02: Passenger Compartment Dimming 2 Circuit Short to GroundDiagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Courtesy Lamps Control | B2615 02 | 2 | 1 | -- |
1. Courtesy lamps always illuminated 2. Courtesy lamps do not illuminate | ||||
Circuit/System Description
Battery voltage for the courtesy lamps is supplied at all times 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.
| • | Dome/reading lamps |
| • | Dome/Reading lamps - row |
| • | Accent lamp - left lower I/P |
| • | Accent lamp - right lower I/P |
| • | Accent lamp - driver seat |
| • | Accent lamp - passenger seat |
| • | Accent lamp - driver door handle |
| • | Accent lamp - passenger door handle |
Conditions for Running the DTC
The BCM attempts to illuminate the courtesy lamps.
Conditions for Setting the DTC
The BCM detects a short to ground on the courtesy lamp control circuit.
Action Taken When the DTC Sets
The BCM will not attempt to activate 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 ignition cycles have occurred. |
Reference Information
Schematic Reference
Interior Lights Dimming Schematics
Connector End View Reference
Description and Operation
Interior Lighting Systems Description and Operation
Electrical Information Reference
Scan Tool Reference
Circuit/System Verification
Ignition ON, command the Courtesy Lamps test ON and OFF with a scan tool. The courtesy lamps should turn ON and OFF when changing between commanded states.
Circuit/System Testing
- Ignition OFF, disconnect the harness connectors at the appropriate inoperative backlighting component.
- Test for less than 5 Ω between the black wire of the component and ground.
- Connect a test lamp between the control circuit of the component and ground.
- Command the Courtesy Lamps Dimming ON and OFF with a scan tool.
- If all circuit test normal, test or replace the appropriate inoperative component.
| ⇒ | If greater than the specified range, test the ground circuit for an open/high resistance. |
| ⇒ | If the test lamp is always OFF, test the control circuit for a short to ground or open/high resistance or replace the K9 Body Control Module (BCM). |
| ⇒ | If the test lamp is always ON, test the control circuit for a short to voltage or replace the K9 Body Control Module (BCM). |
Repair Instructions
Perform the Diagnostic Repair Verification
