Diesel Data: Automotive Repair

Low Beam Headlamps Will Not Turn Off

Test 1 - 5:




SYMPTOM
LOW BEAM HEADLAMPS WILL NOT TURN OFF

POSSIBLE CAUSES
- Low Beam Relay CTL CKT shorted to ground
- Low Beam Relay output SHT B(+)
- Low Beam Relay defective
- Headlamp switch
- Body control module