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:

    Oil Filter Adapter
    Removal 1. Drain the cooling system. For additional information, refer to Section. 2. Disconnect the lower radiator hose. 3. Raise the vehicle. For additional information, refer to Section. 4. Drain the engine oil. 5. Remove the oil filter adapter. 1. ...

    Rear Ride Height Measurement - GT and Base
    Item Description 1 Body reinforcement 2 Ride height (shortest distance) 3 Rear axle Wheel Track Item Part Number Description 1 - Front track 2 - Rear track Dogtracking Item Part N ...

    Master Cylinder - Hydro-Boost
    Removal 1. Disconnect the fluid level sensor connector. 2. Disconnect the brake tubes. 3. Remove the brake master cylinder nuts. 4. Remove the brake master cylinder (2140). Installation 1. To install, reverse the removal procedure. Bleed the brak ...