Ford Mustang (1999-2004) Service Manual: Turn Signal and Hazard Lamps
Refer to Wiring Diagrams Cell 90 , Turn/Stop/Hazard Lamps for schematic and connector information.
Special Tool(s)
![]() |
73 III Automotive Meter 105-R0057 or equivalent |
Inspection and Verification
1. Verify the customer concern.
2. Visually inspect for the following obvious signs of mechanical and electrical damage.
Visual Inspection Chart
Mechanical |
Electrical |
|
|
3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
4. If the cause is not visually evident, verify the symptom and refer to the Symptom Chart.
Symptom Chart
Condition | Possible Sources | Action |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Pinpoint Tests
PINPOINT TEST J: THE TURN SIGNAL LAMPS ARE NEVER ON
Test Step | Result / Action to Take |
J1 CHECK THE VOLTAGE TO THE ELECTRONIC FLASHER | Yes GO to J2 . No REPAIR the circuit in question. TEST the system for normal operation. |
|
|
J2 CHECK CIRCUIT 44 (LB) | Yes GO to J3 . No REPAIR the circuit. TEST the system for normal operation. |
|
|
J3 CHECK THE CONTINUITY OF THE MULTIFUNCTION SWITCH | Yes INSTALL a new electronic flasher. TEST the system for normal operation. No INSTALL a new multifunction switch. REFER to Section. TEST the system for normal operation. |
|
PINPOINT TEST K: THE HAZARD FLASHER LAMPS ARE NEVER ON
Test Step | Result / Action to Take |
K1 CHECK THE VOLTAGE TO THE ELECTRONIC FLASHER | Yes GO to K2 . No REPAIR the circuit. TEST the system for normal operation. |
|
|
K2 CHECK CIRCUIT 385 (WH/RD) | Yes GO to K3 . No REPAIR the circuit. TEST the system for normal operation. |
|
|
K3 CHECK THE CONTINUITY OF THE MULTIFUNCTION SWITCH | Yes INSTALL a new electronic flasher. TEST the system for normal operation. No INSTALL a new multifunction switch; REFER to Section. TEST the system for normal operation. |
|
Stoplamps
Refer to Wiring Diagrams Cell 90 , Turn/Stop/Hazard Lamps for
schematic and connector information.
Special Tool(s)
73III Automotive Meter or
equivalent
105-R0057
Inspection and Ve ...
Parking, Rear and License Lamps
Refer to Wiring Diagrams Cell 92 , Exterior for schematic and connector
information.
Special Tool(s)
73 III Automotive Meter or
equivalent
105-R0057
Inspection and Verification
1 ...
Other materials:
Handle - Interior Door
Removal
1. Remove the door trim panel (23942). For additional information,
refer to Section.
2. Remove the rivet.
3. Remove the cable clip.
4. Release the cable housing from the interior handle.
5. Release the actuating cable from the interior ha ...
Ignition Coil - Coil On Plug
Removal
1. Disconnect the battery ground cable (14301). For additional
information, refer to Section.
2. Remove the air cleaner outlet tube (9B659). For additional information,
refer to Section.
3. NOTE: One ignition coil is shown, and the others are ...
Side airbags
WARNING: Do not place objects or mount equipment on or near
the airbag cover, on the side of the seat backs (of the front seats),
or in front seat areas that may come into contact with a deploying airbag.
Failure to follow these instructions may increase the ...