| | 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 oil levelContinue
to Step 1 |
| Level above Max reference | Reduce to 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 parts concerned,
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 | Continue to Step 4 | Pressure < 40 bar | Continue to Step 3 |
| 3 | CHECK THE 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 | CHECK ON BRAKE PEDAL SWITCH | All OK | Problems met | Operation |
|---|
| Check
the operation of the brake pedal switch See Test 2127F CHECK ON BRAKE PEDAL SWITCH | Continue to Step 6 | The brake pedal switch
is not working properly | Check the state of the connections, the wiring and
the switch. Repair/replace the part that is not working.Continue
to Step 5 |
| 5 | AFTER THE CHECK ON THE BRAKE PEDAL
SWITCH | All
OK | Problems
met | Operation |
|---|
| Check
that the fault is no longer present | End of diagnosis | The fault persists | Continue to Step 6 |
| 6 | CONTROL UNIT ERRORS CHECK | All OK | Problems met | Operation |
|---|
| Check that there are no control unit
errors. In particular: - Clutch sensor error
- Control unit faulty error (microprocessor)
- Even gear engagement error
- Odd gear engagement error
- Clutch solenoid current error
- Electromagnetic brake error (Selection solenoid)
- Engagement sensor error (keeps the gearbox in neutral
only if the engine is off)
| Continue to Step 9 | Presence of one or more
of the errors included in the list | Continue to Step 7 |
| 7 | 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 | Faulty connections (Clutch sensor,
Odd or even gear engagement, Clutch solenoid Current, Electromagnetic
brake and/or Engagement sensor) | Repair/replace the wiringContinue
to Step 8 |
| 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 8 |
| The test is not successful (Odd or even gear engagement) | Replace the solenoid valve Op. 2127C52 Continue
to Step 8 |
| 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 8 |
| The test is not successful (Electromagnetic brake) | Replace the solenoid valve Op. 2127C54 Continue
to Step 8 |
| There are no faulty connections (Engagement sensor) | Replace the engagement potentiometer and check the correct reading
of the position by carrying out a series of gear changes.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 THE LAYOUT OF THE CLUTCH SENSOR
WIRING | All
OK | Problems
met | Operation |
|---|
| Check
the state of the connections, continuity of the wiring (it is important
to pay particular attention to the layout of the clutch position
sensor wiring in the engine compartment: the wire must not be too
taut, and it must have sufficient slack) | Continue to Step 11 | A fault is detected | Repair/replace the part that
is not workingContinue to Step 10 |
| 10 | CHECK THAT THE FAULT IS NO LONGER
PRESENT | All
OK | Problems
met | Operation |
|---|
| Check
that the fault is no longer present | To check that the fault is no longer present, the battery cage
need not be refitted If the problem persists, the next intervention
could involve the solenoid valves (as stated in Step 8); it is therefore advisable
not to refit the battery cage |
| End of diagnosis | The fault persists | Continue to Step 11 |
| 11 | SELF CALIBRATION | All OK | Problems met | Operation |
|---|
| With
the Examiner Plus or Smart, in active diagnosis, start end of Service
line self-diagnosis and make sure that the result is successful | Continue to Step 14 | The self-calibration is
not successful | Continue to Step 12 |
| 12 | SELF-CALIBRATION REPETITION | All OK | Problems met | Operation |
|---|
| Carry
out a second self-calibration and make sure that the result is successful | Continue to Step 14 | The self-calibration is
not successful | The causes could be: battery voltage, oil pressure/oil
level, clutch mechanism problems and mechanical problems on the engagement/selection valves;
out of these cases only the last one has not been taken into consideration
by the points prior to this chart. It is advisable to focus attention
on the engagement/selection solenoid valves Replace the even gear engagement,
odd gear engagement Op. 2127C52 and selection solenoids. Continue
to Step 13 |
| 13 | NEW SELF-CALIBRATION | All OK | Problems met | Operation |
|---|
| After
replacing the solenoids with the Examiner Plus or Smart, carry out
a new end-of-line/Service self-calibration procedure and make sure
that the result is positive | End of diagnosis | The self-calibration is
not successful | Continue to Step 14 |
| 14 | CHECK THAT THE FAULT IS NO LONGER
PRESENT | 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 |