The cruise control set- control is not working

Fault diagnosisThe cruise control set- control is not working

THE CRUISE CONTROL SET- CONTROL IS NOT WORKING

The Cruise Control system does not reduce the speed when the ring nut is turned to " – "

1	SELECTOR OPERATION CHECK	All OK	Problems met	Operation
		Results of the tests
	Check that the Cruise Control contacts work properly in the Set- position:	Continue to Step 2	Lack of continuity	Replace the steering column switch unit lever with the Cruise Control lever incoroporated Op. 5580A10
2	SUPPLY CHECK	All OK	Problems met	Operation
	With the ignition ON and the Cruise Control ON and at '-', check that there is a voltage signal from the Cruise Control system to the engine management control unit: See E5060 CRUISE CONTROL	Continue to Step 3	No voltage found	Restore the connections: See E5060 CRUISE CONTROL
3	CORRECT OPERATION CHECK	All OK	Problems met	Operation
	Check that the fault is no longer present		The fault persists: control unit defective	Replace the engine management control unit Op. 1056B82 Search for the fault starting from another symptom'

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