Dome Switch Input Open

Tests 1 - 3:

SYMPTOM
DOME SWITCH INPUT OPEN

WHEN MONITORED
Dome Lamps OFF.

SET CONDITION
When Voltage is below 4.8 volts for 62.5 msec.

POSSIBLE CAUSES
- Headlamp switch MUX return circuit open
- Panel lamps dimmer signal circuit open
- Body control module
- Headlamp switch