Section 17-01: Lighting, Exterior
1994 Mustang Workshop Manual
DIAGNOSIS AND TESTING
Symptom Chart—Headlamps
Condition
Possible Source
Action
All Exterior Lamps Inoperative
Circuitry open/shorted.
Damaged headlamp switch .
Blow fuse.
Go to
Pinpoint Test Step AA1
.
One Headlamp Inoperative
Circuitry open.
Damaged connector.
Miniature bulb burned out.
Go to
Pinpoint Test Step AA11.
One Rear Lamp Inoperative
Circuitry open.
Miniature bulb burned out.
Damaged connector.
Go to
Pinpoint Test Step AA13.
All Rear Lamps Inoperative, Headlamps OK
Circuitry open.
Blown fuse.
Damaged headlamp switch .
Go to
Pinpoint Test Step AA15.