B2610

DTC B2610

CIRCUIT DESCRIPTION
The body control module (BCM) receives a variable voltage signal from the instrument panel (I/P) dimmer switch requesting to illuminate the illumination lamps to a desired intensity. When this occurs, the BCM directly sends a variable voltage based on the I/P dimmer switch position on the instrument panel lamps dimming supply voltage circuit, instrument panel lamps dimming control circuit, and the LED dimming signal circuit.

Voltage for the instrument panel lamps dimming supply voltage circuit, instrument panel lamps dimming control circuit, and the LED dimming signal circuits is from the TBC 2 A fuse in the instrument panel fuse block directly through the BCM to these circuits.

DTC DESCRIPTOR
This diagnostic procedure supports the following DTC:
DTC B2610 Passenger Compartment Dimming 1 (cluster, etc.) Circuit

CONDITIONS FOR RUNNING THE DTC
The battery voltage must be between 9.0-16.0 volts.

CONDITIONS FOR SETTING THE DTC
- The instrument panel lamps dimming control circuit is open, shorted to ground, or shorted to voltage.
- The instrument panel lamps dimming supply voltage circuit is open, shorted to ground, or shorted to voltage.
- There is a loss of the instrument panel fuse block TBC 2 A battery supply voltage to the BCM for 1 second.

ACTION TAKEN WHEN THE DTC SETS
The 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 DTCs can be cleared using a scan tool.

DIAGNOSTIC AIDS
- Perform a visual inspection for loose or poor connections at all related components.
- A short to ground in the following circuits will cause the TBC 2 A fuse to open.
- The instrument panel lamps dimming control.
- Battery positive voltage from the instrument panel fuse block TBC 2 A fuse.
- An open in the TBC 2 A fuse will cause the BCM to set the following DTC:
- B0951
- B2610
- B2625

TEST DESCRIPTION

Step 1 - Step 11:

The numbers below refer to the step numbers on the diagnostic table.
5. This step test determines if the problem exists in the headlamp switch or the BCM.
10. After replacement of the BCM you must calibrate the new module for proper operation.