2751001 - C11 THE GEARS DO NOT ENGAGE
With the engine warm.| Results of the tests | ||||
| 0 | CONTROL UNIT ERRORS CHECK | All OK | Problems met | Operation |
|---|---|---|---|---|
Check that there are no control unit errors. In particular:
| Continue to Step 5 | Presence of one or more of the errors included in the list | Continue to Step 1 | |
| 1 | CHECKS ON FAULTS DETECTED | All OK | Problems met | Operation |
| Check the faults according to the See Test 2127I What to do for error in Selespeed control unit | Continue to Step 3 | Faulty connections (Clutch sensor, Odd or even gear engagement, Clutch solenoid current error, Electromagnetic brake error, Control unit earth error and/or Load relay error) | Repair/replace the wiringContinue to Step 3 | |
| The state displayed is not correct (Lever switch error - Lever check) | Check the connections, continuity of the wiring and the gear leverContinue to Step 3 | |||
| There is no change of state and/or the word 'ECO' is not displayed (Lever switch error - Check ECO button) | Check the button and wiringContinue to Step 3 | |||
| Replace the Robotized Gearbox control unit (Microprocessor error 2) | Continue to Step 3 | |||
| The active diagnosis is not successful and there are no faults detected at the wiring (Odd or even gear engagement, Clutch solenoid valve current error) | Continue to Step 2 | |||
| 2 | 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. 2127C56 and check the operation by carrying out a C.M.If this step has been reached for the active diagnosis of the engagement solenoid valve, replace it Op. 2127C52 and check the operation | Continue to Step 3 | . | ||
| 3 | SOLENOID VALVE REPLACEMENT | All OK | Problems met | Operation |
| If there is an electromagnetic brake error and no faults are detected at the connections/wiring, replace Op. 2127C54 and check brake is operating correctly. | Continue to Step 4 | . | ||
| 4 | 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 5 | |
| 5 | GEAR LEVER CHECK | All OK | Problems met | Operation |
| Check that the gear lever is working properly following 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 working | |
| There is no change of state and/or the 'AUTO' button is not displayed | Check the switch and the wiring. Repair/replace the part that is not working | |||
| 6 | OIL LEVEL CHECK | All OK | Problems met | Operation |
| Check the oil level as described in See Test 2127B OIL LEVEL CHECK | Continue to Step 8 | Level below the Max reference | Top up the oil levelContinue to Step 7 | |
| Level above the Max reference | Reduce to the Max levelContinue to Step 8 | |||
| 7 | CHECK FOR OIL LEAKS | All OK | Problems met | Operation |
| Check that there are no oil leaks as described in See Test 2127C CHECK FOR OIL LEAKS | Continue to Step 8 | Oil leaks detected in the clutch assembly | Carry out the clutch bleeding procedure in active diagnosis using the ExaminerContinue to Step 8 | |
| Oil leaks detected in other parts of the hydraulic unit | Replace/repair the parts concerned, and top up the oil levelContinue to Step 7 | |||
| 8 | OIL PRESSURE CHECK | All OK | Problems met | Operation |
| Check the amount of oil present and continue with the topping upCheck the oil pressure as described in See Test 2127D OIL PRESSURE CHECK | Continue to Step 10 | Pressure < 40 bar | Continue to Step 9 | |
| 9 | ELECTRIC PUMP OPERATION CHECK | All OK | Problems met | Operation |
| Check the correct operation of the pump as described in Test 2127E | Continue to Step 10 | Voltage below 11 V | Check the batteryContinue to Step 9 | |
| It is not possible to make gear changes from the lever | Activate the 'clutch bleed' service from the Examiner Plus or Smart to activate the pumpContinue to Step 10 | |||
| 10 | CHECK THAT THE CLUTCH IS NOT DRAGGING | All OK | Problems met | Operation |
| Check that the clutch is not dragging following See Test 2127K CLUTCH DRIVE CHECK | Continue to Step 11 | The clutch drags | Replace the clutch mechanism Op. 1810A28 | |
| 11 | CHECK ON BRAKE PEDAL SWITCH | All OK | Problems met | Operation |
| Check that the brake pedal switch is working properly as described in See Test 2127F CHECK ON BRAKE PEDAL SWITCH | End of diagnosis | The brake pedal switch is not working properly | Check the switch on the brake pedal, its fastening, its positioning, the wiring and the engine management control unit. Repair/replace the part that is not working Move on to step 12 | |
| 12 | AFTER THE BRAKE PEDAL SWITCH CHECK | 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 | |