The Cruise Control function - constant speed governor - allows the driver to drive the car at a constant speed without pressing the accelerator pedal.

The function is managed by the engine control unit. This receives commands from a Cruise Control lever on the left of the steering wheel built into the steering wheel stalk unit.

The function is turn on by turning the appropriate wheel (Cruise activated to ON). Moving the lever memorizes an increase (+) or decrease (-) in the speed; this remains stored in the memory and can be restored at any time by pressing the RES (resume) button.

The function is automatically deactivated:

- by pressing the brake pedal;

- by pressing the clutch pedal;

- by turning the wheel to "OFF";

- by turning off the engine.

In such cases, the last speed is stored and can be recalled by pressing the RES button.

The system also switches off at speeds below the minimum permitted speed (about 30 km/h)

With the system activated, the warning light in the instrument panel comes on, connected via the CAN to the engine management control unit.

For more details

  See descriptions 5580A CRUISE CONTROL SYSTEM 

The Cruise Control function is managed by engine management control unit M010 upon a request by Cruise Control system control built into steering wheel stalk unit H005.

A single signal is sent from stalk unit H005 to Body Computer M1, which manages all the Cruise Control commands: from pin 6 of H005 to pin 41 of connector D of M001; the signal is coded through various resistance partitions so that multiple information is sent from the steering column stalk unit to the Body Computer via a single connection.

The reference earth reaches pin 10 of H005 from pin 34 of connector D of M001.

The Body Computer M001 - connector A - receives a direct power supply from the battery through the line protected by maxifuse F01 of the engine compartment control unit B001.

The Body Computer M001 receives an ignition-controlled power supply (INT) at pin 11 of connector E.

Pin 9 of connector E of M001 provides the Body Computer with a reference earth.

The control unit M010 also uses the "pedal released" signals (N.C. contact) coming from the second brake lights switch contact I030 and the signal coming from the clutch switch I031 to manage the Cruise Control function.

  See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT 

The engine management control unit M010 is connected, via the CAN line, to the Body Computer M001 and the instrument panel E050 to manage the Cruise Control on warning light.