3360194 - C20 THE GEARBOX IS STUCK'

It remains blocked in one gear with the vehicle stopped, and during acceleration the engine revs increase (the engaged gear is displayed)
Results of the tests
0CONTROL UNIT ERRORS CHECKAll OKProblems metOperation

Check that there are no control unit errors. In particular:

  • Clutch sensor error
Continue to Step 3Presence of one or more of the errors included in the list Continue to Step 1
1CHECKS ON FAULTS DETECTEDAll OKProblems metOperation
Check the faults See Test   2127I  What to do depending on the error' present in the Selespeed control unit No accelerator pedal information. End of diagnosisFaulty connectionsRepair/replace the wiringContinue to Step 2
There are no faulty connectionsReplace the clutch actuator (CSC) anc check its operation by carrying out a gear change.Continue to Step 2
2AFTER THE CHECKS ON THE FAULTS DETECTEDAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosisThe fault persistsContinue to Step 3
3CHECK THE LAYOUT OF THE CLUTCH SENSOR WIRINGAll OKProblems metOperation
Check the state of the connections, continuity of the wiring (it is important to pay particular to the layout of the clutch position sensor wiring in the engine compartment: the wire must not be too taut, and it must have sufficient slack)Continue to Step 4There is a faultRepair/replace the part that is not workingContinue to Step 5
4CARRY OUT CLUTCH PARAMETER CALIBRATION USING THE EXAMINERAll OKProblems metOperation
In active diagnosis carry out the calibration of the clutch parameters through the 'clutch self-calibration enablement' Continue to Step 5The calibration is not successfulContinue to Step 6
5CHECK THAT THE FAULT IS NO LONGER PRESENTAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosisThe fault persistsContinue to Step 6
6THE FAULT PERSISTSAll OKProblems metOperation
Contact Technical Service for further information on the problemEnd of diagnosisFault persistsSearch for the fault starting from another symptom'