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Fiat Grande Punto Factory Service Manual (2005-2012)22 · Fault diagnosis
22 · Diagnostics

Cruise control set+ control not working

Make
Fiat
Model
Grande Punto Factory Service Manual
Year
2005–2012
Section
Engine › Cruise control set+ control not working
Fault diagnosisCruise control set+ control not working

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
0PRELIMINARY CHECKAll OKProblems encounteredOperation
Check, by carrying out a road test, then the vehicle speed is higher than 40 km/h when the SET+ ring nut is adjustedMove on to Step 1Speed below 40 Km/hBring the speed to above 40 Km/h
1CHECK CRUISE CONTROL COMMANDSAll OKProblems encounteredOperation

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 contacts

2. 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

1CHECK CRUISE CONTROL COMMANDSAll OKProblems encounteredOperation

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 contacts

2. 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

2CHECK ON CORRECT OPERATIONAll OKProblems encounteredOperation

Check that the fault is no longer present

See Test 5580AE CRUISE CONTROL OPERATION ROAD TEST

End of diagnosisThe fault persistsContact the Service Department for further information on the problem

Parts & tools for this job For 2005 Fiat Grande Punto

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