199000758 - D072 CRUISE CONTROL SET+ CONTROL NOT WORKING

The Cruise Control system does not increase the speed when the ring nut is turned to "SET+".

For safety reasons the Cruise Control is inhibited above a maximum speed and below a minimum speed. If these speeds are exceeded the Cruise Control no longer works

		Test results
0	PRELIMINARY CHECK	All OK	Problems encountered	Operation
	Check, by carrying out a road test, that the vehicle speed is higher than 40 km/h when the SET+ ring nut is adjusted	Move on to Step 1	Speed below 40 Km/h	Bring the speed to above 40 Km/h
1	CHECK CRUISE CONTROL COMMANDS	All OK	Problems encountered	Operation
	For the 1.2 8v, 1.4 8v;Check that the Cruise Control system controls are working properly, in particular the "SET+" function	Move on to Step 2	1.No continuity for lever contacts2. Incorrect operation of engine management control unit	1.Replace the Cruise Control stalk assembly    Op. 5550A10 STALK UNIT ASSEMBLY - R+R 2. Replace the engine management control unit    Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R
1	CHECK CRUISE CONTROL COMMANDS	All OK	Problems encountered	Operation
	For the 1.3 JTD 75 CV, 1.3 JTD 90 CV, 1.9 JTD 8v;Check that the Cruise Control system controls are working properly, in particular the "SET+" function	Move on to Step 2	1.No continuity for lever contacts2. Incorrect operation of engine management control unit	1.Replace the Cruise Control stalk assembly    Op. 5550A10 STALK UNIT ASSEMBLY - R+R 2. Replace the engine management control unit    Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.R
2	CORRECT OPERATION CHECK	All OK	Problems encountered	Operation
	Check that the fault is no longer present    See Test 5580AE CRUISE CONTROL OPERATION ROAD TEST	End of diagnosis	The fault persists	Contact the Service Department for further information on the problem