| | Results of the tests |
| 0 | CONTROL UNIT ERRORS CHECK | All OK | Problems met | Operation |
|---|
| Check that there are no control unit
errors. In particular: - Clutch sensor error
- Microprocessor 2 error
- 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 5 | Presence of one or more
of the errors included in the list | Continue to Step 1 |
| 1 | CHECKS ON FAULTS DETECTED | All OK | Problems met | Operation |
|---|
| Check
the faults according to the See Test 2127I What to do for error in Selespeed control unit | Continue to Step 3 | Faulty connections (Clutch sensor,
Odd or even gear engagement, Clutch solenoid current, Electromagnetic
brake error) | Repair/replace the wiringContinue to Step 3 |
| Replace the Robotized Gearbox control unit (Microprocessor
error 2) | Continue to Step 3 |
| The active diagnosis for the solenoid valve is not successful
and no faults are detected at the wiring (Odd or even gear engagement
and/or Clutch solenoid valve current) | Continue to Step 2 |
| 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 3 |
| 2 | 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. 2127C56 and check the 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. 2127C52 and check
the operation | Continue to Step 3 | . | |
| 3 | SENSOR/SOLENOID REPLACEMENT | All OK | Problems met | Operation |
|---|
| If
there is an electromagnetic brake error and no faults are detected
at the connections/wiring, replace Op. 2127C54 and check
brake operationIf there is a gear engagement sensor error and no faults are
detected at the connections/wiring, replace it Op. 2127E42 and
check that the position reading is correct by carrying out a series
of C.M. | Continue to Step 4 | . | |
| 4 | 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 5 |
| 5 | CHECK ON BRAKE PEDAL SWITCH | All OK | Problems met | Operation |
|---|
| Check
that the brake pedal switch is working properly as described in
See Test 2127F CHECK ON BRAKE PEDAL SWITCH | Continue to Step 7 | 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 Move on toStep
6 |
| 6 | 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 7 |
| 7 | OIL LEVEL CHECK | All OK | Problems met | Operation |
|---|
| Check
the oil level as described in See Test 2127B OIL LEVEL CHECK | Continue to Step 9 | Level below the Max reference | Top up the oil levelContinue
to Step 8 |
| Level above the Max reference | Reduce to the Max levelContinue to Step 9 |
| 8 | CHECK FOR OIL LEAKS | All OK | Problems met | Operation |
|---|
| Check
that there are no oil leaks as described in See Test 2127C CHECK FOR OIL LEAKS | Continue to Step 9 | OIl leaks detected | Replace/repair the parts concerned,
and top up the oil levelContinue to Step 8 |
| 9 | OIL PRESSURE CHECK | All OK | Problems met | Operation |
|---|
| Check
the oil pressure as described in See Test 2127D OIL PRESSURE CHECK | Continue to Step 11 | Pressure < 40 bar | Continue to Step 10 |
| 10 | ELECTRIC PUMP OPERATION CHECK | All OK | Problems met | Operation |
|---|
| Check
the correct operation of the pump as described in See Test 2127E ELECTRIC PUMP OPERATION CHECK | Continue to Step 11 | Voltage below 11 V | Check the batteryContinue
to Step 10 |
| 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 11 |
| 11 | 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 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 13 | There is a fault | Repair/replace the part that
is not workingContinue to Step 12 |
| 12 | 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; it is therefore
advisable not to refit the battery cage |
| End of diagnosis | The fault persists | Continue to Step 13 |
| 13 | 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 15 | The self-calibration is
not successful the first time | Continue to Step 13 |
| The self-calibration is not successful the second time | Replace the even gear engagement, odd gear engagement Op. 2127C52 and
selection solenoids Op. 2127C54 .Continue to
Step 14 |
| 14 | 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 | Contact Technical Service for further information on
the problem |