3360185 - C11 THE GEARS DO NOT ENGAGE

With the engine warm
Results of the tests
0OIL LEVEL CHECKAll OKProblems metOperation
Check the oil level See Test   2127B  OIL LEVEL CHECK Continue to Step 2Level below Max referenceTop up the levelContinue to Step 1
Level above Max referenceReduce to the Max referenceContinue to Step 2
1CHECK FOR OIL LEAKSAll OKProblems metOperation
Check that there are no oil leaks See Test   2127C  CHECK FOR FLUID LEAKS Continue to Step 2OIl leaks detectedReplace/repair the relevant parts, top up the fluid levelContinue to Step 1
2OIL PRESSURE CHECKAll OKProblems metOperation
Check the oil pressure See Test   2127D  OIL PRESSURE CHECK Continue to Step 4Pressure < 40 barContinue to Step 3
3CHECK PUMP OPERATIONAll OKProblems metOperation
Check that the pump is working properly See Test   2127E  ELECTRIC PUMP OPERATION CHECK Continue to Step 4Voltage below 11 VCheck the batteryContinue to Step 3
Gear changes cannot be made from the leverActivate the 'clutch bleed' service from the Examiner Plus or Smart to activate the pumpContinue to Step 3
4CONTROL UNIT ERRORS CHECKAll OKProblems metOperation

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

  • Clutch sensor error
  • Lever switch errors 0/1/2/3
  • Lever switch error (any of the 4 switches or auto switch)
  • Control unit faulty error (microprocessor)
  • Even gear engagement error
  • Odd gear engagement error
  • Clutch solenoid valve current error
  • Electromagnetic brake error (Selection solenoid)
  • Control unit earth error
  • Load relay error
Continue to Step 7Presence of one or more of the errors included in the list Continue to Step 5
5CHECKS 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 diagnosisFault on the connections (Clutch sensor, Odd or even gear engagement, Clutch solenoid current, Electromagnetic brake, ECU earth error and/or Load relay error)Repair/replace the wiringContinue to Step 6
There are no faults on the connections (Clutch solenoid current)Replace the solenoid Op.   2127C56  and check its operation by carrying out a gear change.Continue to Step 6
There are no faulty connections (Clutch sensor)Replace the clutch actuator (CSC) and check its operation by carrying out a gear change.Continue to Step 6
The test is not successful (Electromagnetic brake)Replace the solenoid valve Op.   2127C54  Continue to Step 6
The test is not successful (Odd or even gear engagement)Replace the solenoid valve Op.   2127C52  Continue to Step 6
The state displayed is not correct (Lever switch error 0/1/2/3 and/or Lever switch error - Check lever)Check the connections, the continuity of the wiring and the gear leverContinue to Step 6
There is no change of state and/or the word 'AUTO' is not displayed (Lever switch error - Check auto button)Check the button and the wiringContinue to Step 6
6AFTER THE CHECKS ON THE FAULTS DETECTEDAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosisThe fault persistsContinue to Step 7
7CHECK THAT THE CLUTCH IS NOT DRAGGINGAll OKProblems metOperation
Check that the clutch is not dragging See Test   2127K  CLUTCH DRIVE CHECK Continue to Step 9The clutch dragsProceed with checking the clutch/flywheel kit and, if necessary, replace any components that do not conform.Continue to Step 8
8AFTER THE INTERVENTION ON THE CLUTCH KITAll OKProblems metOperation
Check that the fault is no longer present End of diagnosisThe fault persistsContinue to Step 9
9CHECK THAT THE LEVER AND AUTO BUTTON ARE WORKING PROPERLYAll OKProblems metOperation
Check that the lever and button are working properly See Test   2127G  CHECK ON BUTTONS ON STEERING WHEEL AND GEAR LEVER Continue to Step 11The lever or the button is not working properlyCheck the state of the connections and the wiring. Repair/replace the part that is not workingContinue to Step 10
There is no change of state and/or the word 'AUTO' is not displayedCheck the button and the wiring.Continue to Step 10
10AFTER THE CHECK ON THE CORRECT OPERATION OF THE LEVER AND AUTO BUTTONAll OKProblems metOperation
Check that the fault is no longer present End of diagnosisThe fault persistsContinue to Step 11
11CHECK ON BRAKE PEDAL SWITCHAll OKProblems metOperation
Check the operation of the brake pedal switch See Test   2127F  CHECK ON BRAKE PEDAL SWITCH Continue to Step 13The brake pedal switch is not working properlyCheck the state of the connections, the wiring and the switch. Repair/replace the part that is not working.Continue to Step 12
12AFTER THE CHECK ON THE BRAKE PEDAL SWITCHAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosisThe fault persistsContinue to Step 13
14THE FAULT PERSISTSAll OKProblems metOperation
Contact Technical Service for further information on the problem End of diagnosisFault persistsSearch for the fault starting from another symptom'