Cruise Control System

The Cruise Control system consists of the following components:
^ Control module 508.
^ Vehicle speed sensor 132.
^ Cruise Control selector switch 141.
^ Pedal switched 133 (clutch, manual gearbox) and 134 (brakes).
^ Brake lights switch 29 or signal from TCS control module 507 for V6.

Control Module 508
The control module incorporates an electric stepping motor which mechanically regulates the cruise control cable. Current (+54 circuit) is supplied to pin F of the control module via fuse 2.

Vehicle Speed Sensor 132
The sensor continuously reads the speed and supplies this data to the control module via pin K.

Switch 141
The Cruise Control system is engaged by means of switch 141. The different positions of the switch are:

Position ON: Current is supplied to the control module via pin A.

Position SET: Current is supplied to the control module via pin B and the speed of the car is obtained from vehicle speed sensor 132.

Position TIP: Between ON and OFF on the switch is a TIP position. When this position is selected, the current supplied to pin A of the control module is cut off and the Cruise Control is disconnected. When the button is released, it springs back to the ON position, at which point current is again supplied to pin A of the control module.

Position RESUME: Restores the selected speed stored in the control module memory after either of pedal switches 133 and 134 has been activated. Current is supplied to control module pin C.

Pedal Switches 133 And 134
When the brake or clutch pedal is depressed, the current supplied to pin D of the respective pedal switch, 133 or 134, is cutoff and the Cruise Control system is disengaged.

Cars With Trionic
On cars equipped with the Trionic engine management system, terminal 36 of the Trionic control module receives a signal from pin J of the Cruise Control system's control module to the effect that the system is operative.

This results in smoother control of the vehicle's speed.

Automatic Transmission
When the selector lever is in one of the drive positions, switch 76 in selector lever 239 is closed. Pin D then receives a 12 V signal which enables the Cruise Control system to be activated. This means that the system will not be operative until the selector lever is in one of the drive positions.

Indicator Lamp 47u
Cars for certain markets are equipped with a CRUISE indicator lamp, 47u, which lights up when switch 141 is set to the ON position.