| 1 | FLUID LEVEL CHECK | All OK | Problems encountered | Operation |
|---|
| Check the fluid level, carrying out the See Test 2127OC FLUID LEAKS CHECK | Move on to Step 2 | Level lower than Max mark | Top up with the correct amount. |
| Level above Max mark | Refill to Max level |
| 2 | ERRORS IN CONTROL UNIT CHECK | All OK | Problems encountered | Operation |
|---|
| Check that there are no errors in the control unit. More specifically:- Engagement sensor error- Selection sensor error- Engine speed error- Clutch plate speed error- Vehicle speed error- Absence of accelerator pedal information error- Microprocessor 2 error- CAN network error | Move on to Step 3 | Errors present. | Continue as instructed by the diagnostic equipment |
| 3 | FLUID PRESSURE CHECK | All OK | Problems encountered | Operation |
|---|
| Check the oil pressure, carrying out the See Test 2127OD FLUID PRESSURE CHECK | End of diagnosis | Pressure not correct | Move on to Step 4 |
| 4 | ELECTRIC PUMP OPERATION CHECK | All OK | Problems encountered | Operation |
|---|
| Check that the electric pump is working properly by carrying out the See Test 2127OE ELECTRIC PUMP OPERATION CHECK | End of diagnosis | Connection to earth defective | Restore the correct earth connection. |
| Faulty wiring from gearbox control unit to electrical pump | Repair electrical pump wiring. |
| Electric pump defective | Replace the electric pump Op. 2127C30 HYDRAULIC SPEED SELECTION SYSTEM PUMP - R.R. |