| | Test results |
| 1 | ERRORS IN CONTROL UNIT CHECK | All OK | Problems encountered | Operation |
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| Check that there are no errors in the control unit. More specifically:- Clutch sensor error- Microprocessor 2 error- Even gears engagement error- Odd gears engagement error- Clutch solenoid current error- Selection solenoid error- Engagement sensor error (keeps the gearbox in neutral only if the engine is off). | End of diagnosis | One or more errors on the list are present. | Move on to Step 2 |
| 2 | CHECKS ON FAULTS ENCOUNTERED | All OK | Problems encountered | Operation |
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| Check the faults, carrying out See Test 2127OI WHAT TO DO DEPENDING ON THE ERROR PRESENT IN THE ROBOTIZED GEARBOX CONTROL UNIT | Move on to Step 3 | Fault at the connections (Clutch sensor, Even or odd gears engagement, Clutch solenoid current, Electro-magnetic brake error) | Restore/replace the wiring See E7051 ROBOTIZED GEARBOX |
| The Automated Gearbox has been replaced (Microprocessor 2 error) | Move on to Step 4 |
| The active diagnosis of a solenoid is inconclusive and no wiring errors are detected (Even gears or odd gears engagement and/or Clutch solenoid current) | Move on to Step 3 |
| The are no faults at the connections (Engagement sensor) | 4. Replace the engagement potentiometer and check that the reading for the position is correct by carrying out a series of gear changes. |
| 3 | CLUTCH / ENGAGEMENT SOLENOID REPLACEMENT | All OK | Problems encountered | Operation |
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| - If this step has been reached during the active diagnosis of the clutch solenoid, replace it Op. 2127C56 CLUTCH CONTROL SOLENOID - R.R. and check it is working correctly by carrying out a gear change.- If this step has been reached during the active diagnosis of the engagement solenoid, replace it Op. 2127C52 ODD AND EVEN GEAR ENGAGEMENT SOLENOIDS - R.R. and check it is working correctly | Move on to Step 4 | | |
| 4 | REPLACEMENT OF SENSOR/SOLENOID | All OK | Problems encountered | Operation |
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| - If no connection / wiring faults are detected and the gear selection solenoid is in error, replace it Op. 2127C54 GEAR SELECTION SOLENOIDS - R.R. and check it is working correctly- If no connection / wiring faults are detected and the gear engagement sensor is in error, replace it Op. 2127E42 HYDRAULIC SELECTION GEARBOX SHIFT POSITION SENSOR - R.R. and check that the reading for the position is correct by carrying out a series of gear changes. | Move on to Step 5 | | |
| 5 | BRAKE PEDAL SWITCH CHECK | All OK | Problems encountered | Operation |
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| Check that the brake pedal switch is working properly, carrying out See Test 2127OF BRAKE PEDAL SWITCH CHECK | Move on to Step 6 | The brake pedal switch is not working properly. | Check the condition of the connections, wiring and switch. Restore/replace the part that is not working. |
| 6 | FLUID LEVEL CHECK | All OK | Problems encountered | Operation |
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| Check the fluid level, carrying out See Test 2127OB FLUID LEVEL CHECK | Move on to Step 10 | Level lower than Max mark | Top up and move on to Step 7 |
| Level above Max mark | Bring to Max level and move on to step 8 |
| 7 | FLUID LEAKS CHECK | All OK | Problems encountered | Operation |
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| Check there are no fluid leaks, carrying out See Test 2127OC FLUID LEAKS CHECK | Move on to Step 8 | Fluid leaks detected. | Repair/replace the parts involved, top up the fluid. |
| 8 | FLUID PRESSURE CHECK | All OK | Problems encountered | Operation |
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| Check the fluid pressure, carrying out See Test 2127OD FLUID PRESSURE CHECK | Move on to Step 11 | Pressure < 40 bar | Move on to Step 9 |
| 9 | PRESSURE SENSOR CHECK | All OK | Problems encountered | Operation |
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| Check that the sensor is working properly, carrying out See T OIL PRESSURE SENSOR OPERATION CHECK | Move on to Step 8 | Pressure sensor not working | Replace the sensor Op. 2127E50 HYDRAULIC SELECTION GEARBOX CIRCUIT PRESSURE SENSOR - R.R. |
| 10 | ELECTRIC PUMP OPERATION CHECK | All OK | Problems encountered | Operation |
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| Check that the electric pump is working properly by carrying out See Test 2127OE ELECTRIC PUMP OPERATION CHECK | Move on to Step 10 | Voltage less than 11 V | Restore correct battery voltage. |
| It is not possible to shift gears using the lever. | Activate the "bleed clutch" function from Examiner Plus or Smart to activate the electric pump. |
| 11 | CLUTCH PLATE SPEED SENSOR CHECK | All OK | Problems encountered | Operation |
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| Check the clutch plate speed signal, carrying out See Test 2127OA CHECK ON OPERATION OF CLUTCH DISC SPEED SENSOR THROUGH ROAD TEST | Move on to Step 14 | Problems are encountered at the sensor signal. | Move on to Step 12 |
| 12 | CLUTCH PLATE SPEED SENSOR CONDITION OF CONNECTIONS CHECK | All OK | Problems encountered | Operation |
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| Check the condition of the connections and wiring for the clutch plate speed sensor. | This sensor is located on the gearbox bell-housing near the reversing lights sensor. In some cases, removing the sensor will reveal iron filings deposited on the sensor head. |
| Move on to Step 13 | Faults at the connections / wiring. | Restore the correct connections / wiring See E7051 ROBOTIZED GEARBOX |
| 13 | CLUTCH SENSOR WIRING LAYOUT CHECK | All OK | Problems encountered | Operation |
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| Check the condition of the connections, the continuity of the wiring (it is important to pay particular attention to the clutch position sensor wiring layout in the engine compartment: the cable should not be too tight, it must have sufficient clearance) | Move on to Step 14 | A fault is detected. | Restore/replace the part that is not working. |
| 14 | CARRYING OUT SELF-CALIBRATION | All OK | Problems encountered | Operation |
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| With an Examiner Plus or Smart in active diagnosis, launch the Service line fine self-calibration and make sure that it has a positive outcome. | Move on to Step 15 | The self-calibration is inconclusive for the first time. | Move on to Step 15 |
| The self-calibration is inconclusive for the second time. | Replace the even gears, odd gears engagement solenoids Op. 2127C52 ODD AND EVEN GEAR ENGAGEMENT SOLENOIDS - R.R. and selection solenoids Op. 2127C54 GEAR SELECTION SOLENOIDS - R.R. |
| 15 | CARRYING OUT NEW SELF-CALIBRATION | All OK | Problems encountered | Operation |
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| After replacing the solenoids, carry out a new Service line fine self-calibration with an Examiner Plus or Smart and make sure that it has a positive outcome. | End of diagnosis | The self-calibration is not successful. | Contact technical service for further information on the problem. |