Operation CHARM: Car repair manuals for everyone.

Headlamp Switch Open

Tests 1 - 2:




Tests 3 - 5:





SYMPTOM
HEADLAMP SWITCH OPEN

WHEN MONITORED
Ignition ON

SET CONDITION
A Sensor voltage is over 4.8 volts for more than .0625 seconds.

POSSIBLE CAUSES
- INtermittent wiring and connectors
- Headlamp switch MUX circuit open
- Headlamp switch MUX return circuit open
- Headlamp switch open
- Body control module