Speed control

Torque specification

Name	Nm	Pound-foot	Pound inch
Speed Control Actuator Nuts	6	-	53
Speed Control Switch Bolts	5	-	44

Pos.	Spare Part No	Name
1	-	Speed Control Drive Cable
2	-	Speed control switches
3	-	Speed control servo box
4	-	Clutch position switch (cars with a manual transmission in a block with a drive axle)
5	-	Vehicle speed sensor
6	-	Stoplight switch
7	-	Deactivator switch

The speed control system is controlled by five switches located on the steering wheel. The functions of the system are as follows:

The speed control module sends signals to the actuator, which, using an internal gear train and a drive cable, changes the position of the throttle. The speed control sensor generates a reference signal, which is compared by the servo unit with the speed set by the driver. If there is a difference, the stepper servomotor will adjust the throttle position to correct the vehicle speed.

ON	Turning on the system
OFF	System shutdown
+ (SET/ACC)	Tuning/overclocking and stepping up speed
- (COAST)	Coasting and stepping
= (RESUME)	Resumption

Any of the switches actuated by the brake or clutch pedal (vehicles equipped with a manual transmission), will activate the speed control servo by closing the throttle.

Actuator of the speed control system

The speed control servo unit is located on the bulkhead. It combines the following elements:

• Electronic module
• An actuator consisting of a stepper motor, an electromagnetic clutch and a reduction gear.

Speed control servo unit

The speed control servo unit compares the speed signal from the vehicle speed sensor and the commands from the switches. It adjusts the throttle position to keep the vehicle at a constant speed.

When you press the clutch pedal (vehicles with manual transmission) or brake The speed control servo unit disables the speed control system. The servo unit enters the interrupt mode of the speed control system.

Speed Control Switches

Pressing the switch "ON", when the vehicle is moving faster than 48 km/h (30 mph), the speed control actuator receives speed input signals.




Switch + (SET/ACC) used to adjust the speed or acceleration of the vehicle when it is moving faster than 48 km/h (30 mph). The switch can be used in three ways.

• Accelerate the vehicle to the desired speed using the accelerator pedal, press and release the + (SET/ACC). The vehicle will maintain the selected speed.
• Click the switch + (SET/ACC) and keep it pressed until the vehicle reaches the desired speed. When released, the speed value will be memorized and used to maintain vehicle speed.
• Click the switch + (SET/ACC) several times to increase the vehicle speed in steps of 1.6 km/h (1 mph).

Switch - (COAST) used to reduce vehicle speed. The switch can be used in two ways:

• Press and hold switch - (COAST) pressed until the vehicle slows down to the desired speed. When the switch is released, the speed value will be memorized and used to maintain the selected travel speed.
• Click the switch - (COAST) several times to reduce the vehicle speed in steps of 1.6 km/h (1 mph).

Pressing the switch = (RESUME) returns the vehicle to the selected speed when the speed control system is in system interrupt mode. Pressing and releasing the switch = (RESUME) at any speed exceeding 48 km/h (30 mph) will return the vehicle to a preselected speed.



Pressing the OFF switch turns off the speed control system. The memorized speed value will be erased.

Stoplight switch

If you press the brake pedal lightly while the speed control system is on, the servo unit will receive input from the brake light switch. This will force the speed control servo to close the throttle at a controlled speed. The speed control system will be put into system interrupt mode.

Deactivator switch

If you quickly depress the brake pedal while the speed control system is on, the speed control servo unit will receive input from the deactivator switch. This will cause the magnetic clutch to disengage from the stepper motor and turn off. This will allow the cable to close the throttle under the influence of the throttle return spring. The speed control system will enter system interrupt mode.

Clutch position switch (SRR) (in versions with a manual transmission in a block with a drive axle)

If the clutch pedal is depressed while the speed control system is engaged, the speed control servo unit will receive input from the clutch pedal position switch. This will cause the servo to disengage and close the throttle at a controlled rate. The speed control system will enter system interrupt mode.