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

NOTE: If any concerns are noted with the speedometer, stoplamps, or horn, address those concerns by referring to their associated sections before continuing speed control diagnosis.

1. Verify the customer concern by operating the speed control system.

2. Visually inspect for obvious signs of mechanical and electrical damage.

Visual Inspection Chart

Mechanical Electrical
  • Deactivator switch
  • Speed control actuator cable not attached to throttle
  • Speed control actuator cable not fully seated to the engine bracket
  • Central junction box (CJB) Fuse:
  • 15 (15A)
  • 33 (15A)
  • 35 (15A)
  •  Battery junction box (BJB) fuse:
  • HORN (20A)
  • Wiring harness
  • Loose or corroded connections
  • Speed control actuator switches

3. If the fault is not visually evident, verify the symptom and GO to the Symptom chart.

    Principles of Operation
    The speed control system is designed to maintain vehicle speed above 48 km/h (30 mph). After the ON switch is depressed, depressing the SET/ACCEL switch will activate the speed control servo. To inc ...

    Symptom Chart
    NOTE: New speed control diagnostic software is available in Version 12 or higher for the diagnostic tool. When using this software, it is necessary to use Next Generation Speed Control Adapter 007- ...

    Other materials:

    Steering Column Shaft
    Removal and Installation 1. CAUTION: Do not allow the steering column shaft to rotate while intermediate shaft is disconnected or damage to the clockspring can result. If there is evidence that the steering column shaft has rotated the clockspring must be re ...

    Sensor Indicator - Rear
    Special Tool(s) Pinion Bearing Cone Remover 205-D002 (D79P-4621A) Axle Bearing/Seal Plate 205-090 (T75L-1165-B) Sensing Ring Replacer 206-041 (T89P-20202-A) Removal 1. Remove the rear axle shaft bearing. 2. Using the special ...

    Fuel cut-off switch
    WARNING: Failure to inspect and if necessary repair fuel leaks after a collision may increase the risk of fire and serious injury. Ford Motor Company recommends that the fuel system be inspected by an authorized dealer after any collision. In the event of a m ...