Monitoring Conditions

Monitoring Conditions

To carry out the leak diagnostic it is necessary that:
- Engine-on time is at least 20 minutes and last engine-off time is more than 5 hours.
- ECM (=Engine Control Module) is in after run mode
- Engine speed is 0 rpm
- Vehicle speed is 0 km/h
- Altitude is less than (or equal to) 2500 meters
- Engine coolant temperature is above (or equal to) +4 Degrees C
- Ambient temperature is between +4 Degrees C and +35 Degrees C
- Fuel level between 15% to 85% when no fuel level fault
- Fuel level is not used if fault on fuel level
- Rate of change of the initial relative pump current is low enough
- Concentration of fuel vapor in the EVAP canister is not excessive
- Battery voltage between 11.0 V and 14.5 V
- Purge valve is closed.

With the following errors the leakage detection monitoring can not be performed. These errors will therefore disable the leakage detection monitoring and the MIL (and the corresponding fault code) will be set. The disable conditions are:
- Error on power stages DM-TL pump
- Error on power stage purge valve
- Error on purge valve
- Error on change-over valve