| | 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 2 | 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 2 |
| 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 | 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 4 | Pressure < 40 bar | Continue to Step 3 |
| 3 | 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 4 | Voltage below 11 V | Check the batteryContinue to Step 3 |
| 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 4 |
| 4 | CONTROL UNIT ERRORS CHECK | All OK | Problems met | Operation |
|---|
| Check that there are no control unit errors. In particular: - Brake switch error
- Clutch sensor error
- Even gear engagement error
- Odd gear engagement error
- Clutch solenoid current error
- 1st/2nd selection solenoid valve error
- 5th/Reverse selection solenoid valve error
- Control unit earth error
- Load relay error
Pump relay error | If there is a brake switch error, the recovery considers the brake to be constantly pressed with the engine running; this means that only changes to lower gears can take place in automatic mode |
| Continue to Step 7 | Presence of one or more of the errors included in the list | Continue to Step 5 |
| 5 | CHECKS ON FAULTS DETECTED | All OK | Problems met | Operation |
|---|
| Check the faults in accordance with See Test See Test 2127I What to do for error in Selespeed control unit | Continue to Step 7 | Faults detected (brake switch) | Restore/replace the component/wiringContinue to Step 7 |
| Faulty connections (Clutch sensor, Odd or even gear engagement, Clutch solenoid Current error, Selection solenoid valve error, Load relay error and/or Pump relay error) | Repair/replace the wiringContinue to Step 7 |
| The active diagnosis for the solenoid valve is not successful and no faults are detected at the wiring (Odd or even gear engagement, Clutch solenoid valve current error and/or Selection solenoid valve error) | Continue to Step 6 |
| Battery run down (Load relay error) | Restore the correct battery charge Op. 5530C14Continue to Step 5 |
| 6 | 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 engagement solenoid valve, replace it Op. 2127C52and check its operationIf this step has been reached for the active diagnosis of the selection solenoid valve, replace it Op. 2127C54and check its operation | Continue to Step 7 | . | |
| 7 | 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 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 ON BRAKE PEDAL SWITCH | All OK | Problems met | Operation |
|---|
| Check that the brake pedal switch is working properly in accordance with See Test 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 10 |
| 10 | 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 | Continue to Step 11 |
| 11 | CHECK THE CLUTCH DISC SPEED SENSOR | All OK | Problems met | Operation |
|---|
| Check the clutch disc speed signal in accordance with See Test See Test 2127A HYDRAULIC TRANSMISSION EXTERNAL LINKAGE | Continue to Step 14 | There are problems with the sensor signal | Continue to Step 12 |
| 12 | CHECK THE STATE OF THE CONNECTIONS | All OK | Problems met | Operation |
|---|
| Check the state of connections and wiring of the speed sensor. | Remember that this sensor is on the gearbox bellhousing near the reversing lights sensor |
| Continue to Step 13 | There are faults detected | Repair/replace the part that is not workingContinue to Step 14 |
| 13 | REPLACE THE CLUTCH DISC SPEED SENSOR | All OK | Problems met | Operation |
|---|
| Replace the clutch disc speed sensor Op. 2127E52 | Continue to Step 14 | . | |
| 14 | AFTER THE CHECK ON THE CLUTCH DISC SPEED SENSOR | 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 |