Parameters displayed

Parameters displayed

Engine rpm

Injection time

Advance

Intake air temperature

Coolant temperature

Butterfly valve opening angle

Battery voltage

Lambda sensor

Self-adjustment

Flow meter

Engine knocking (detonation)

Vehicle speed

Petrol vapour cut out solenoid valve

Fiat CODE

Mileage travelled

Active diagnosis

The following active tests can be carried out using the Fiat/Lancia Tester:

• Phase transformer
• Injector
• Failure warning light
• Petrol vapour solenoid valve
• Air conditioning
• Idle speed actuator
• Cancelling errors.

Recovery

If there are problems with the sensors, the control unit replaces the value transmitted by the sensor with a so called Recovery value which, depending on the different problems, is stored in the control unit memory or is specially reconstructed from the other information available, in order to allow the vehicle to reach a service centre.

This value is also transmitted to the Fiat/Lancia Tester, therefore, during the fault diagnosis it is worth bearing in mind that in the case of problems the Fiat/Lancia Tester will signal the error for the sensor concerned and the Recovery value will be displayed.

Permanent memory

The control unit is equipped with a «permanent» type errors memory (EEPROM), i.e. the error indication is preserved even if the cause of the problem no longer exists and the key has been turned to the OFF position; it also has a «volatile» type memory (RAM) which, on the other hand, loses the error information as soon as the cause disappears.

This also allows the more effective detection of errors of an occasional nature.

Before ending the fault diagnosis the contents of the «permanent» memory should be cancelled using the Fiat/Lancia Tester in Active Diagnosis.

The contents of the «permanent» errors memory can be cancelled in the following ways:

1. Using the Fiat/Lancia Tester in active diagnosis.

If this is not the case, when the Fiat/Lancia Tester is reconnected the errors already examined are signalled.

2. If the cause of the error is no longer present and the engine has been started up 5 times (working for at least 20 minutes) with a gap of at least 2 minutes between one starting and the next.

Disconnecting the control unit from the system, even for long periods of time, does not cancel the contents of the «permanent» memory.