B2610
DTC B2610
CIRCUIT DESCRIPTION
The body control module (BCM) applies a voltage reference through the instrument panel (I/P) dimming voltage reference circuit to the interior lamp switch. When the switch is placed to the desired position, the dimmed voltage setting is applied from the interior lamp switch through the I/P dimming control circuit to the BCM. The BCM applies the dimmed voltage to the instrument panel lamp supply voltage circuit.
DTC DESCRIPTOR
This diagnostic procedure supports the following DTC:
DTC B2610 Passenger Compartment Dimming 1 Circuit
CONDITIONS FOR RUNNING THE DTC
- The battery voltage must be between 9-16 volts.
- The ignition in the RUN position.
- The headlamps into ON position.
CONDITIONS FOR SETTING THE DTC
- When the BCM receives an instrument panel controls illumination lamp request signal and the I/P dimming voltage reference circuit is shorted to ground, open, or short to battery positive voltage.
- When the BCM is not receiving an instrument panel controls illumination lamp request signal and the I/P dimming control circuit is shorted to battery positive voltage or open.
ACTION TAKEN WHEN THE DTC SETS
The instrument panel illumination lamps and the 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 DTCs can be cleared using a scan tool.
DIAGNOSTIC AIDS
Perform a visual inspection for loose or poor connections at all related components.
TEST
