Ford Mustang 1994-1998 Repair Guide



See Figures 1 and 2

1994-98 Mustang vehicles were available with a speed control system. This system automatically controls the speed of the vehicle when cruising at a stable highway speed. The speed control system consists of the following:

Speed control amplifier
Speed control cable
Vehicle Speed Sensor (VSS)
Horn relay and bracket
Speed control actuator switch
Stop light switch
Deactivator switch
Clutch pedal position switch (manual transmissions only)

The speed control system operates independently of engine vacuum and, therefore, does not utilize any vacuum lines.

The speed control amplifier, mounted on the left-hand door hinge pillar, integrates the system electronics, thereby eliminating any other electronic control modules in the vehicle. The amplifier controls the vehicle's speed via a cable attached to the throttle body lever.

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Fig. Fig. 1: The speed control amplifier (servo) is mounted on the left-hand, front door pillar, and controls the speed of the vehicle via a cable

The speed control actuator switch assembly is mounted on the steering wheel and allows the driver to control the system's operation. The switch assembly contains five control buttons for system functioning, namely: ON, OFF, RESUME, SET ACCEL, COAST.

The system will continue to control the vehicle's speed until the OFF button is used, or the brake pedal or clutch pedal (manual transmissions only) is depressed.

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