B0951

DTC B0951

CIRCUIT DESCRIPTION
The body control module (BCM) controls the illumination dimming of all of the control switch indicators. The BCM sets the control switch indicator illumination level according to the lip dimmer switch signal received when the component is activated and the indicator is ON. The BCM also activates the headlamp on indicator.

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

CONDITIONS FOR SETTING THE DTC
- The headlamp on indicator control circuit is open.
- The headlamp on indicator control circuit is shorted to ground.
- The headlamp on indicator control circuit is shorted to voltage.

ACTION TAKEN WHEN THE DTC SETS
The headlamps on indicator will remain on with the headlamps off.
The headlamps on indicator will remain off with the headlamps 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.

TEST DESCRIPTION

Steps 1-13:

The numbers below refer to the step numbers on the diagnostic table.
5. Tests for voltage at the LED dimming signal circuit.
6. Tests for a BCM output to the headlamp switch.
7. Determines if it is the headlamp on indicator circuit or the BCM.
8. After replacement of the BCM you must calibrate the new module for proper operation.