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 |
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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:
911 Assistâ„¢
WARNING: Unless the 911 Assist setting is set on prior to a
crash, the system will not dial for help which could delay
response time, potentially increasing the risk of serious injury or death
after a crash.
WARNING: Do not wait for 911 Assist to make an emerg ...
Personal Safety System
The Personal Safety System provides an improved overall level of frontal
crash protection to front seat occupants and is designed to help further
reduce the risk of airbag-related injuries. The system is able to analyze
different occupant conditions and crash ...
Communications Network (Diagnosis and Testing)
Refer to Wiring Diagrams Cell 14 , Multiplex Communication Network for
schematic and connector
information.
Special Tool(s)
73 Digital Multimeter or
equivalent
105-R0051
Worldwide Diagnostic System
(WDS)
418-F224,
New Genera ...