Dimming Level Switch Failure

Tests 1 - 2:

Tests 3 - 7:

Tests 8 - 11:

SYMPTOM
DIMMING LEVEL SWITCH FAILURE

WHEN MONITORED
Continuously.

SET CONDITION
The BCM detects an open or short circuit condition for 10 seconds on the panel lamps dimmer signal circuit.

POSSIBLE CAUSES
- Checking dimming switch positions
- Headlamp switch - open
- Headlamp switch - shorted
- Open headlamp switch return circuit
- Panel lamp dimmer signal circuit shorted to ground
- BCM - headlamp return circuit open
- Measure the voltage of the panel lamp dimmer signal circuit
- Measure the voltage of the panel lamp dimmer signal circuit
- Open panel lamp dimmer signal circuit
- Panel lamp dimmer signal circuit shorted to the headlamp switch return circuit
- Panel lamp dimmer signal circuit shorted to voltage