Ford Mustang (1999-2004) Service Manual: Inspection and Verification

NOTE: A new instrument cluster must be reconfigured.

NOTE: The instrument panel dimmer switch is a part of the headlamp switch.

1. Verify the customer concern.

2. Visually inspect for obvious signs of electrical damage.

Visual Inspection Chart

Electrical

  • Central junction box (CJB) fuses:

  • 5 (15A)

  • 21 (5A)

  • 34 (20A)

  • 37 (5A)

  • 32 (15A)

  • 27 (20A)

  • Circuitry

  • Damaged switch

3. If the fault is not visually evident, determine the symptom and proceed to the Symptom Chart.

Symptom Chart

Condition Possible Sources Action
  • The control illumination is inoperative
  • Central junction box (CJB) fuse 37 (5A).
  • Circuitry.
  • Headlamp switch.
  • Go To Pinpoint Test A .
  • The instrument cluster illumination is inoperative
  • Circuitry.
  • Instrument cluster.
  • Bulb(s).
  • Go To Pinpoint Test B .
  • The climate control illumination is inoperative
  • Circuitry.
  • Bulb(s).
  • Go To Pinpoint Test C .
  • The audio system illumination is inoperative
  • Circuitry.
  • Audio unit.
  • Go To Pinpoint Test D .
  • A single illumination source is inoperative
  • Circuitry.
  • Switch.
  • Go To Pinpoint Test E .
    Instrument Cluster and Panel Illumination (Diagnosis and Testing)
    Refer to Wiring Diagrams Cell 71 , Instrument Illumination for schematic and connector information. Special Tool(s) 73III Automotive Meter 105-R0057 or equivalent ...

    Pinpoint Tests
    PINPOINT TEST A: THE CONTROL ILLUMINATION IS INOPERATIVE Test Step Result / Action to Take A1 CHECK PARKING LAMPS YesPlace the headlamp switch in the OFF position. GO to A2 . No ...

    Other materials:

    Switch - Window Regulator Control
    Removal 1. CAUTION: Use a shop towel or similar material between the tool and the door trim panel or damage to the door trim panel may occur. Position the window regulator switch plate aside. 1. Pull at the service notch. 2. Lift to release ...

    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 necessary. ...

    Speakers
    Torque Specifications Speakers NOTE: Premium sound speakers (18808) are labeled with either 6 OHMS or 8 OHMS. The coupe has a four-speaker system, with two door-mounted speakers and two in the package tray panel (46506). On the convertibl ...