| | Results of the tests |
| 0 | OIL LEVEL CHECK | All OK | Problems met | Operation |
|---|
| Check
the oil level See Test 2127B OIL LEVEL CHECK | Continue to Step 2 | Level below Max reference | Top up the levelContinue
to Step 1 |
| Level above 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 See Test 2127C CHECK FOR FLUID LEAKS | Continue to Step 2 | Oil leaks detected | Replace/repair the relevant
parts, and top up the oil levelContinue to Step 1 |
| 2 | OIL PRESSURE CHECK | All OK | Problems met | Operation |
|---|
| Check
the oil pressure See Test 2127D OIL PRESSURE CHECK  | Neutral for low pressure only exists
if the vehicle is stationary or moving at low speed (about 10-15
km/h) |
| Continue to Step 4 | Pressure < 40 bar | Continue to Step 3 |
| 3 | CHECK ON PUMP OPERATION | All OK | Problems met | Operation |
|---|
| Check
that the pump is working properly See Test 2127E ELECTRIC PUMP OPERATION CHECK | 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 3 |
| 4 | CONTROL UNIT ERRORS CHECK | All OK | Problems met | Operation |
|---|
| Check that there are no control unit
errors. In particular: - Microprocessor 2 error (in the following condiions: engine
on, accelerator pedal released, brake not pressed and speed below 4.5
km/h)
- Errors on CAN network (in the following conditions: engine
on, accelerator pedal released, brake not pressed and speed below 4.5
km/h)
- Engine speed (in the following conditions: engine on,
accelerator pedal released, brake not pressed and speed below 4.5
km/h)
- Electromagnetic brake (Selection solenoid)
- Clutch solenoid current
- Clutch sensor
- Selespeed pump
| 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 See Test 2127I What to do depending on the error' present in the Selespeed control unit No accelerator pedal information. | End of diagnosis | One of the control units
does not dialogue (Errors on CAN network) | Repair/replace the control
unit concernedContinue to Step 6 |
| Faulty connection (Engine speed) | Repair/replace the part concernedContinue
to Step 6 |
| Faulty connections (Electromagnetic brake, Clutch solenoid current,
Clutch sensor and/or Selespeed pump) | Repair/replace the wiringContinue to Step 6 |
| The test is not successful (Electromagnetic brake) | Replace the solenoid valve Op. 2127C54 Continue
to Step 6 |
| There are no faulty connections (Clutch solenoid current) | Replace the solenoid valve Op. 2127C56 and check
its operation by carrying out a gear change.Continue
to Step 6 |
| There are no faulty connections (Clutch sensor) | Replace the clutch actuator (CSC) and check its operation
by carrying out a gear change.Continue to Step 6 |
| Fault in pump relay and/or fuse (Selespeed pump) | Replace the componentContinue to Step 6 |
| Faults on pump winding (Selespeed pump) | Replace the component Op. 2127C30 Continue
to Step 6 |
| 6 | 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 7 |
| 7 | DOOR SWITCH CHECK | All OK | Problems met | Operation |
|---|
| Check
the state of the driver's door switch (it should be remembered that
the system recognizes the opening of the door if the accelerator
pedal is released for 4 seconds, the brake not pressed and the speed
is below 4.5 km/h) | Continue to Step 9 | The door switch is not
working properly | Check the state of the connections, the wiring and the
switch. Repair/replace the part that is not workingContinue
to Step 8 |
| 8 | AFTER THE DOOR SWITCH CHECK | 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 THE CORRECT OPERATION
OF THE LEVER | All
OK | Problems
met | Operation |
|---|
| Check
the operation of the lever (remembering that neutral can be engaged
with the vehicle moving at speeds below 40 km/h) | End of diagnosis | The lever is not working
properly | Check
the state of the connections and the wiring. Repair/replace the
part that is not workingContinue to Step 10 |
| 10 | AFTER THE CHECK ON THE CORRECT OPERATION
OF THE LEVER | All
OK | Problems
met | Operation |
|---|
| Check
that the fault is no longer present | End of diagnosis | Fault persists | Search for the
fault starting from another symptom' |