3022594 - D75 THE CRUISE CONTROL SET- CONTROL IS NOT WORKING

The Cruise Control system does not reduce the speed when the ring nut is turned to " – "
Results of the tests
1SELECTOR OPERATION CHECKAll OKProblems metOperation
Check that the Cruise Control contacts work properly in the Set- position:Continue to Step 2Lack of continuityReplace the steering column switch unit lever with the Cruise Control lever incoroporated Op.   5580A10 
2SUPPLY CHECKAll OKProblems metOperation
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 3No voltage foundRestore the connections: See   E5060  CRUISE CONTROL
3CORRECT OPERATION CHECKAll OKProblems metOperation
Check that the fault is no longer presentThe fault persists: control unit defectiveReplace the engine management control unit Op.   1056B82  Search for the fault starting from another symptom'