3360186 - C12 THE GEARS DO NOT ENGAGE
Reverse gear cannot be engaged sometimes| Results of the tests | ||||
| 0 | OIL LEVEL CHECK | All OK | Problems met | Operation |
|---|---|---|---|---|
| Check the oil level See Test 2127B OIL LEVEL CHECK | Continue to Step 2 | Level below Max reference | Top up the levelContinue to Step 1 | |
| Level above Max reference | Reduce to Max levelContinue to Step 2 | |||
| 1 | CHECK FOR OIL LEAKS | All OK | Problems met | Operation |
| Check that there are no oil leaks See Test 2127C CHECK FOR FLUID LEAKS | Continue to Step 2 | Oil leaks detected | Replace/repair the relevant parts, top up the oil levelContinue to Step 1 | |
| 2 | OIL PRESSURE CHECK | All OK | Problems met | Operation |
| Check the oil pressure See Test 2127D OIL PRESSURE CHECK | Continue to Step 4 | Pressure < 40 bar | Continue to Step 3 | |
| 3 | CHECK THE PUMP OPERATION | All OK | Problems met | Operation |
| Check that the pump is working properly See Test 2127E ELECTRIC PUMP OPERATION CHECK | Continue to Step 4 | Voltage below 11 V | Check the batteryContinue to Step 3 | |
| Gear changes cannot be made from the lever | Activate the 'clutch bleed' service from the Examiner Plus or Smart to activate the pumpContinue to Step 3 | |||
| 4 | CHECK THAT THE LEVER AND AUTO BUTTON ARE WORKING PROPERLY | All OK | Problems met | Operation |
| Check that the lever and auto button are working properly See Test 2127G CHECK ON BUTTONS ON STEERING WHEEL AND GEAR LEVER | Continue to Step 6 | The lever or the button is not working properly | Check the state of the connections and the wiring. Repair/replace the part that is not working.Continue to Step 5 | |
| There is no change of state and/or the word 'AUTO' is not displayed | Check the button and the wiring.Continue to Step 5 | |||
| 5 | AFTER THE CHECKIN ON THE CORRECT OPERATION OF THE LEVER AND AUTO BUTTON | All OK | Problems met | Operation |
| Check that the fault is no longer present | End of diagnosis | The fault persists | Continue to Step 6 | |
| 6 | CONTROL UNIT ERRORS CHECK | All OK | Problems met | Operation |
Check that there are no control unit errors. In particular:
| Continue to Step 9 | Presence of one or more of the errors included in the list | Continue to Step 7 | |
| 7 | CHECKS ON FAULTS DETECTED | All OK | Problems met | Operation |
| 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 diagnosis | Connections faulty (Electromagnetic brake) | Repair/replace the control unit concernedContinue to Step 6 | |
| The state displayed is not correct (Lever switch error 0/1/2/3 and/or Lever switch error - Lever check) | Check the connecctions, continuity of the wiring and the gearleverContinue to Step 8 | |||
| There is no change of state and/or the word 'AUTO' is not displayed (Lever switch error - Auto button check) | Check the button and the wiringContinue to Step 8 | |||
| 8 | AFTER THE CHECKS ON THE FAULTS DETECTED | All OK | Problems met | Operation |
| Check that the fault is no longer present | End of diagnosis | The fault persists | Continue to Step 9 | |
| 9 | CHECK THAT THE CLUTCH IS NOT DRAGGING | All OK | Problems met | Operation |
| Check that the clutch is not dragging See Test 2127K CLUTCH DRIVE CHECK | Continue to Step 11 | The clutch drags | Proceed with checking the clutch/flywheel kit and, if necessary, replace any components that do not conform. Continue to Step 10 | |
| 10 | AFTER THE INTERVENTION ON THE CLUTCH KIT | All OK | Problems met | Operation |
| Check that the fault is no longer present | End of diagnosis | The fault persists | Continue to Step 11 | |
| 11 | THE FAULT PERSISTS | All OK | Problems met | Operation |
| Contact Technical Service for further information on the problem | End of diagnosis | Fault persists | Search for the fault starting from another symptom' | |