| | Results
of the tests |
| 0 | PRELIMINARY NOTES | All OK | Problems met | Operation |
|---|
| Temperature
ijndication is managed by the engine control unit via a CAN line.
Any faults in the electrical circuit and coolant temperature sensor
are indicated by the system via activation of the engine control
warning light and the indicator on the instrument panel pointing
to zero. | Continue to Step 1 | - | - |
| 1 | COOLANT LEVEL CHECK | All OK | Problems met | Operation |
|---|
| Check
the level of the coolant.Find out from the customer whether the problem has occurred previouslyCheck the fluid consists of 100% PARAFLUUse a thermometer to check fluid temperature and compare it with
the temperature displayed by the gauge | Continue to Step 2 | Fluid too low and no traces
of leaks noted | Restore fluid level |
| 100% PARAFLU | Dilute the PARAFLU 50% |
| Temperature is true | Continue to Step 2 |
| 2 | CHECK ON RADIATOR | All OK | Problems met | Operation |
|---|
| Check
the condition of the radiator. In particular, check for signs of
deformation - traces of leaks - external dirt - fluid with excessive
traces of rust. | Continue to Step 3 | Radiator distorted | Replace the radiator Op. 1088B20 |
| Radiator dirty | Clean the radiator Op. 1088A20 |
| Radiator is leaking | Replace the radiator Op. 1088B20 |
| Liquid with excessive traces of rust | Clean the inside of the radiator and cooling circuit |
| 3 | THERMOSTAT OPERATION CHECK | All OK | Problems met | Operation |
|---|
| Check
that the thermostat is working properly | Continue to Step 4 | Thermostat not working | Bleed the system as per standard
procedure. Replace the thermostat if the problem persists |
| 4 | CHECKING FAN OPERATION | All OK | Problems met | Operation |
|---|
| Test
using an Examiner Activate the fan in active diagnosis modeIf the fan works, ensure it comes on at the required temperature | Continue to Step 5 | Fan not working | Activate the fan motor directly,
replace if it does not work, check the following in order if it
does work: specific fuses and relays on the engine bay control unit, condition
of 1st speed resistor, specific wiring continuity and insulation.
Check that the control unit activates the fan speed relays. If not,
replace the i.e. control unit. If it does, replace the engine bay control
unit |
| 5 | CHECK ON CORRECT OPERATION | All OK | Problems met | Operation |
|---|
| Check
that the fault is no longer present | End of diagnosis | Fault persists | |