Cruise Control does not work.

Read the instructions below then start the fault diagnostic procedure.

Symptom: Cruise Control does not work.

Cruise Control does not work.

Fault symptoms

Cruise Control does not work.

Conditions

The following conditions apply for this fault symptom:

•	No diagnostic trouble codes in the car with the symptom description in question.

Diagnostic help

Drive the car and activate the cruise control while using the diagnostic tool to check the conditions for cruise control at the same time. Start fault diagnosis on the condition that cannot be met.

The diagnostic tool menu also contains a group of test readings called ”REASON CC WAS SWITCHED OFF”. The readings are from the last time the cruise control was operative and show the cause of it being turned off. The readings are stored as long as the control module is supplied with current, which make them suitable for diagnosing intermittent faults.

Diagnostic tool functions related to this fault are:

•	Cruise control A, unit ON/OFF.

•	Cruise control B, ON/OFF.

•	Cruise control C, ON/OFF.

•	Clutch or brake pedal switch, ON/OFF.

•	Brake light, unit ON/OFF.

•	Vehicle Speed (Wire from ABS), in km/h

•	Vehicle Speed (Bus from MIU), unit km/h.

•	All readings under ”CONDITIONS FOR CRUISE CONTROL” group.

•	All readings under ”REASON CC WAS SWITCHED OFF” group.

See also the description of test values under ”Fault diagnosis, general” for more information.

Check the wiring

Jiggle the leads and in-line connectors at various points and in different directions to detect any intermittent breaks or short circuits in the wiring. Observe the multimeter, test lamp or diagnostic tool while doing this.