Component Locations

Speed Control System

The Speed control system consists of:

- Speed control servo

- Speed control actuator

- Vehicle speed sensor

- Horn relay and bracket

- Speed control actuator switch assembly

- Stoplight switch

- Deactivator switch

The system operates independent of engine vacuum, therefore no vacuum lines are required.

Speed Control Servo:

- It is mounted in the engine compartment near the power brake booster.

- It is connected to the throttle body with the speed control actuator.




- The electronics are integrated into the speed control servo, eliminating the need for any other speed control electronic modules in the vehicle.

Speed Control Actuator Switch Assembly:

- Is mounted in the steering wheel. It consists of:

- The LH buttons (ON, OFF).

- The RH buttons (RESUME, SET/ACCEL, COAST).

- The necessary wiring.

Vehicle Speed Sensor:

- Is mounted to the transaxle.

- VSS is a magnetic pickup driven by a gear which is driven by the transaxle.

- The VSS signal sent to the speed control servo is proportional to vehicle speed.

Air Bag Sliding Contact:

- Is located at the center of the steering wheel.

It transfers electrical signals from the steering column wiring to:

- The driver side air bag module.

- The horn blow switch.

- The speed control actuator switch assembly.

Stoplight Switch:

- Is a normally open switch and closes when the brake pedal is applied.

- Then, an electrical signal is sent to the speed control servo and the speed control system is disengaged.

- When the brake pedal is released, the circuit to the stoplamp opens and the stoplight switch returns to its open position.

Deactivator Switch:

- It is a normally closed switch that replaces the speed control dump valve as a redundant safety feature in the system.

- When the brake pedal is applied, an electrical signal from the stoplight circuit to the speed control servo disengages the system.

- Under increased brake pedal efforts (22-44N.m (5-10 lbs), engine running), the deactivator switch mounted in the brake line opens and removes power to the speed control servo, releasing the throttle from servo control.

- Is mounted to the underside of the brake master cylinder.