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:
Removal
1. Disconnect the battery ground cable.
2. Remove the air cleaner outlet tube. For additional information, refer to
Section.
3. Remove the radiator sight shield.
4. Install the special tool.
5. Using the special tools, support the engine.
6. Raise and sup ...
Lower Arm
Removal
CAUTION: Suspension fasteners are critical parts because they affect
performance of vital
components and systems and their failure can result in major service expense. A
new part with
the same part number must be installed if installation becomes nec ...
Changing a bulb
Lamp Assembly Condensation
Exterior lamps are vented to accommodate normal changes in pressure.
Condensation can be a natural by-product of this design. When moist air
enters the lamp assembly through the vents, there is a possibility that
condensation can oc ...