Fuel System
WARNING: This page is about a different car, the 2003 Lincoln Aviator. However, it is still accessible from the selected car via links, so may be relevant.
Refer to SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE .
The canister vent solenoid (9F945):
- is normally open.
- seals the evaporative emissions system for the inspection and maintenance (I/M 240) test and OBD II leak and pressure tests.
The EVAP canister purge valve:
- is normally closed.
- regulates the purging of the EVAP canister.
- is controlled by the PCM.
The EVAP system test port:
- is located on the EVAP canister purge valve.
- is used to connect the Evaporative Emissions System Tester to the EVAP system.
The evaporative emission dust separator:
- prevents suspended dust and dirt particles from entering the evaporative emission system.
- is serviced as a separate item.
The evaporative emission system monitor:
- is a self-test strategy within the PCM which tests the integrity of the EVAP system.
- monitors the EVAP system for leaks.
- monitors electronic EVAP components for irrationally high or low voltages.
- monitors for correct EVAP system operation.
- uses negative leak test methods to test and activate the EVAP system.
- a "CHECK FUEL CAP" message will be displayed by the message center if the EVAP system fails the test.
The EVAP running loss system leak test:
- utilizes intake manifold vacuum to test the system and involves several stages.