| | Results of the tests |
| 0 | CONTROL UNIT ERRORS CHECK | All OK | Problems met | Operation |
|---|
| Check that there are no control unit
errors. In particular: - Brake switch error
- Clutch sensor error
- Microprocessor 2 error
- Even gear engagement error
- Odd gear engagement error
- Clutch solenoid current error
- Electromagnetic brake error (Selection solenoid)
- Control unit earth error
Load relay error | If there is a brake switch error,
the recovery considers the brake to be constantly pressed with the
engine running; this means that only changes to lower gears can
take place in automatic mode |
| Continue to Step 3 | 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 | Faults detected (brake
switch) | Restore
correct operationContinue to Step 3 |
| Faulty connections (Clutch sensor, Odd or even gear engagement, Clutch
solenoid valve current, Electromagnetic brake error, Control unit
earth error and/or Load relay error) | Repair/replace the wiringContinue to Step 3 |
| Replace the Robotized Gearbox control unit (Microprocessor
2 error) | 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) | Continue to Step 2 |
| 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 | SOLENOID VALVE REPLACEMENT | All OK | Problems met | Operation |
|---|
| If
there is an electromagnetic brake error and no faults are detected
at the connections/wiring, replace it Op. 2127C54 and check
that it is operating correctly | Continue to Step 4 | . | |
| 4 | AFTER THE CHECKS ON 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 | OIL LEVEL CHECK | All OK | Problems met | Operation |
|---|
| Check
the oil level as described in See Test 2127B OIL LEVEL CHECK | Continue to Step 7 | Level below the Max reference | Top up the oil levelContinue
to Step 6 |
| Level above the Max reference | Reduce to the Max levelContinue to Step 7 |
| 6 | 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 7 | Oil leaks detected | Replace/repair the parts concerned,
and top up the oil levelContinue to Step 6 |
| 7 | OIL PRESSURE CHECK | All OK | Problems met | Operation |
|---|
| Check
the oil pressure as described in See Test 2127D OIL PRESSURE CHECK | Continue to Step 9 | Pressure < 40 bar | Continue to Step 8 |
| 8 | 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 9 | Voltage below 11 V | Check the batteryContinue
to Step 8 |
| 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 8 |
| 9 | CHECK THE CLUTCH DISC SPEED SENSOR | All OK | Problems met | Operation |
|---|
| Check
the clutch disc speed signal following See Test 2127A Check on operation of clutch plate speed sensor through road test | Continue to Step 12 | There are problems with
the sensor signal | Continue to Step 10 |
| 10 | CHECK THE STATE OF THE CONNECTIONS | All OK | Problems met | Operation |
|---|
| Check
the state of connections and wiring of the speed sensor. | Remember that this sensor is on
the gearbox bellhousing near the reversing lights sensor |
| Continue to Step 11 | There are faults detected | Repair/replace the part that
is not workingContinue to Step 12 |
| 11 | REPLACE THE CLUTCH DISC SPEED SENSOR | All OK | Problems met | Operation |
|---|
| Replace
the clutch disc speed sensor Op. 2127E52 | Continue to Step 12 | . | |
| 12 | AFTER THE CHECK ON THE CLUTCH DISC
SPEED SENSOR | 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 |