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)
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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 |
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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 |
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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. |
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J2 CHECK CIRCUIT 44 (LB) | Yes GO to J3 . No REPAIR the circuit. TEST the system for normal operation. |
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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. |
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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. |
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K2 CHECK CIRCUIT 385 (WH/RD) | Yes GO to K3 . No REPAIR the circuit. TEST the system for normal operation. |
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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. |
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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:
Headlamp Adjustment
Headlamp Aiming
1. The headlamp aiming procedure depends on the type of beam pattern the
headlamp is
equipped with. Vehicles may come equipped with visual optical right (VOR),
visual optical left
(VOL), or SAE only (includes sealed beam type) headlamps. ...
Starter Motor - 4.6L
Removal
WARNING: When servicing starter motor (11002) or carrying out other
underhood work in
the vicinity of the starter motor, be aware that the heavy gauge battery
input lead at the starter
solenoid (11390) is "electrically hot" at all times. A prote ...
Cable and Conduit
Removal
NOTE: The RH rear is shown, the LH is similar.
1. CAUTION: If any component in the parking brake system requires
repair or if the
rear axle housing (4010) is removed, the cable tension must be released.
Release the cable tension. For additional ...