125000502 - D72 CRUISE CONTROL SET+ CONTROL NOT WORKING

The Cruise Control system does not increase the speed when the knob is set to +. Warning: For safety reasons, the Cruise Control is inhibited above a maximum speed and below a limit speed. If these speeds are exceeded, even because of a fault, the Cruise Control does not work any more

		Results of the tests
1	CHECK WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
	Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket.Check that there are no faults in the engine management control unit	Continue to Step 2	An error is detected in the control unit	Continue following the instructions for the diagnostic equipment
			Lack of dialogue with the control unit	Restore the connection between the engine management control unit and the diagnostic connector See    See E5060 CRUISE CONTROL
2	CHECK CRUISE CONTROL SELECTOR	All OK	Problems met	Operation
	Check that the Cruise Control contacts are working	Continue to Step 3	Lack of continuity	Replace the stalk unit lever with built-in Cruise Control system control Op.    Op. 5580A10 CRUISE CONTROL LEVER ASSEMBLY - R+R
3	CHECK ON SUPPLY	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    See E5060 CRUISE CONTROL	Continue to Step 4	No voltage found	Restore the connections See    See E5060 CRUISE CONTROL
4	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
1.9 JTD 16V	Check that the fault is no longer present	End of diagnosis	Fault persists: control unit defective	Replace the engine management control unit Op.    Op. 1060G80 DS ELECTRIC INJECTION CONTROL UNIT - R R
2.0 JTS3.2 V6	Check that the fault is no longer present	End of diagnosis	Fault persists: control unit defective	Replace the engine management control unit Op. 1056B82