125000473 - C10 THE GEARS DO NOT ENGAGE
First and/or Reverse after a stop.| Results of the tests | ||||
| 0 | OIL LEVEL CHECK | All OK | Problems met | Operation |
|---|---|---|---|---|
| Check the oil level as described in See Test See Test 2127B OIL LEVEL CHECK | Continue to Step 5 | Level below the Max reference | Top up the oil levelContinue to Step 1 | |
| Level above the Max reference | Reduce to the Max levelContinue to Step 3 | |||
| 1 | CHECK FOR OIL LEAKS | All OK | Problems met | Operation |
| Check that there are no oil leaks as described in See Test See Test 2127C HYDRAULIC GEAR SELECTION SYSTEM | Continue to Step 2 | Oil leaks detected | Replace/repair the parts concerned, and top up the oil levelContinue to Step 1 | |
| 2 | CHECK ON QUANTITY FOR TOPPING UP | All OK | Problems met | Operation |
| Check the amount of fluid that is required for the first topping up | End of diagnosis | The quantity is less than 200 cc | Concentrating on the clutch push rodContinue to Step 1 | |
| The quantity is more than 200 cc | Replace the hydraulic unit Op. 2727C40 | |||
| 3 | OIL PRESSURE CHECK | All OK | Problems met | Operation |
| Check the oil pressure as described in See Test See Test 2127D OIL PRESSURE CHECK | Continue to Step 5 | Pressure < 40 bar | Continue to Step 4 | |
| 4 | ELECTRIC PUMP OPERATION CHECK | All OK | Problems met | Operation |
| Check the correct operation of the pump as described in See Test See Test 2127E ELECTRIC SPEED SELECTION SYSTEM | Continue to Step 5 | Voltage below 11 V | Check the batteryContinue to Step 4 | |
| The Pump relay output parameter state is ON, but the pump is not activated | Check the electric pump electric supply chain | |||
| 5 | CHECK ON BRAKE PEDAL SWITCH | All OK | Problems met | Operation |
| Check the operation of the brake pedal switch as described in See Test See Test 2127F CHECK ON BRAKE PEDAL SWITCH | Continue to Step 11 | The change in state does not take place | Check the brake pedal switch, its attachment, its positioning and the wiring. Repair/replace the part that is not workingContinue to Step 6 | |
| 6 | CLUTCH PUSH ROD ADJUSTMENT CHECK | All OK | Problems met | Operation |
| Carry out the clutch push rod check as described in See Test See Test 2127M CLUTCH PUSH ROD ADJUSTMENT CHECK | Continue to Step 7 | The position is outside the permitted range | Restore the correct position Tighten to torque | |
| 7 | CONTROL UNIT ERRORS CHECK | All OK | Problems met | Operation |
Check that there are no control unit errors. In particular:
| Continue to Step 12 | Presence of one or more of the errors included in the list | Continue to Step 8 | |
| 8 | CHECKS ON FAULTS DETECTED | All OK | Problems met | Operation |
| Check the faults as described in See Test See Test 2127I What to do for error in Selespeed control unit | Continue to Step 10 | Faulty connections (Clutch sensor, Odd or even gear engagement, Clutch solenoid Current error, Selection solenoid valve error, Control unit earth error and/or Load relay error) | Repair/replace the wiringContinue to Step 10 | |
| The state displayed is not correct (lever switch error 0/1/2/3) | Check the connections, continuity of the wiring and the gear leverContinue to Step 10 | |||
| The active diagnosis has not been successful and there are no faults detected at the wiring (Odd or even gear engagement, Selection solenoid valve error and/or Clutch solenoid valve current error) | Continue to Step 9 | |||
| Battery run down (Load relay error) | Restore the correct battery charge Op. 5530C14Continue to Step 8 | |||
| 9 | AFTER THE SOLENOID VALVE ACTIVE DIAGNOSIS | All OK | Problems met | Operation |
| If this step has been reached for the active diagnosis of the clutch solenoid valve, replace it Op. 2127C56and check its operation by carrying out a C.M.If this step has been reached for the active diagnosis of the selection solenoid valve, replace it Op. 2127C54and check its operationIf this step has been reached for the active diagnosis of the engagement solenoid valve, replace it Op. 2127C52and check its operation | Continue to Step 10 | . | ||
| 10 | POTENTIOMETER REPLACEMENT | All OK | Problems met | Operation |
| If there is a clutch sensor error and no faults are detected at the connections/wiring, replace the clutch potentiometer Op. 2127E44and check that the position reading is correct by carrying out a series of C.M. | Continue to Step 11 | . | ||
| 11 | 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 12 | |
| 12 | GEAR LEVER CHECK | All OK | Problems met | Operation |
| Check that the gear lever is working properly following See Test See Test 2127L GEAR LEVER CHECK | Continue to Step 6 | The lever states displayed are not correct | Check the wiring and the switches/gear lever Repair/replace the part that is not workingContinue to Step 13 | |
| There is no change of state and/or the ''CITY'' button is not displayed | Check the switch and the wiring Repair/replace the part that is not workingContinue to Step 13 | |||
| 13 | AFTER THE CHECK ON THE CORRECT OPERATION OF THE GEAR LEVER | All OK | Problems met | Operation |
| Check that the fault is no longer present | End of diagnosis | The fault persists | Continue to Step 14 | |
| 14 | CHECK THAT THE CLUTCH IS NOT DRAGGING | All OK | Problems met | Operation |
| Check that the clutch is not dragging following See Test See Test 2127K CLUTCH DRIVE CHECK | End of diagnosis | The clutch drags | Replace the clutch mechanism Op. 1810A28Continue to Step 15 | |
| 15 | AFTER OPERATION ON CLUTCH KIT | All OK | Problems met | Operation |
| Check that the fault is no longer present | End of diagnosis | The fault persists | Continue to Step 16 | |
| 16 | SLOW FINGER CHECK | All OK | Problems met | Operation |
| Using the Examiner Plus or Smart in active diagnosis, launch the procedure for checking the slow finger | Continue to Step 17 | The finger is slow | Replace the finger fixing bolt | |
| 17 | CHECK ON CORRECT OPERATION | All OK | Problems met | Operation |
| Check that the fault is no longer present | End of diagnosis | The fault persists | Contact Technical Service for further information on the problem | |