B2610

DTC B2610

Circuit Description
The body control module (BCM) receives a variable voltage signal from the IP dimmer switch requesting to illuminate the instrument panel controls illumination lamps to a desired intensity. When this occurs, the BCM directly sends a variable voltage based on the IP dimmer switch position through the instrument panel lamps dimming control circuit to the instrument panel controls illumination lamps.

Conditions for Running the DTC
The battery voltage must be between 9.0-16.0 volts.

Conditions for Setting the DTC
- When the BCM receives a instrument panel controls illumination lamp request signal and the instrument panel lamps dimming control circuit is shorted to ground.
- When the BCM is not receiving a instrument panel controls illumination lamp request signal and the instrument panel lamps dimming control circuit is shorted to voltage or open.

Action Taken When the DTC Sets
The instrument panel controls illumination lamps will not operate or are always on.

Conditions for Clearing the MIL/DTC
- This DTC will clear on current status after the condition for setting the fault is corrected.
- A history DTC will clear after 100 consecutive ignition cycles without a fault present.
- History and current DTC(s) can be cleared using a scan tool.

Diagnostic Aids
Perform a visual inspection for loose or poor connections at all related components. Refer to Diagnostic Aids for Circuit Testing and Wiring Repair procedures.

Step 1 - 6:

Test Description
The numbers below refer to the step numbers on the diagnostic table.
2. This step test determines by process of elimination which, if any, dimmable component is causing the DTC to set.
3. This step test determines if the problem exists in the wiring or the BCM.
5. After replacement of the BCM you must calibrate the new module for proper operation.