Workshop Manuals Factory service & repair Alfa Romeo
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Alfa Romeo 147 Factory Service Manual (2000-2004)22 · Fault diagnosis
22 · Diagnostics

Cruise control set+ control not working

Make
Alfa Romeo
Model
147 Factory Service Manual
Year
2000–2004
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 knob is set to '+'.

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
1CHECK WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation

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 2An error is detected in the control unitContinue following the instructions for the diagnostic equipment
Lack of dialogue with the control unitRestore the connection between the engine management control unit and the diagnostic connector: See E5060 CRUISE CONTROL
2CHECK CRUISE CONTROL SELECTORAll OKProblems metOperation
Check that the Cruise Control contacts are workingContinue to Step 3Lack of continuityReplace stalk unit lever with built-in Cruise Control system control Op. 5580A10
3SUPPLY CHECKAll OKProblems metOperation
With the ignition and Cruise Control knob set to 'ON and '+', check that there is a voltage signal from the Cruise Control system control to the engine management control unit: See E5060 CRUISE CONTROLContinue to Step 4No voltage foundRestore the connections: See E5060 CRUISE CONTROL
4CHECK ON CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentThe fault persists: control unit faulty

Replace the engine management control unit Op. 1056B82

Search for the fault starting from another symptom'

Parts & tools for this job For 2000 Alfa Romeo 147

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