Evaporative Emission Ventilation Solenoid

EVAPORATIVE EMISSION VENTILATION SOLENOID







OPERATION
- The evaporative emission ventilation solenoid is a ON - OFF type solenoid valve and installed to monitor the leak in the fuel tank and purge line. Normally it opens the atmospheric release opening and closes during the leak monitoring.
- Through the MFI relay the battery power is supplied to the evaporative emission ventilation solenoid. If the ECM switches on the power transistor in the module, the current flows in the coil and close the EVAP canister atmospheric release opening.




INSPECTION
Using Scan Tool

HARNESS INSPECTION




Check for continuity between evaporative emission ventilation solenoid and multiport fuel injection relay.
- Evaporative emission ventilation solenoid connector: Disconnected
- Multiport fuel injection relay connector: Disconnected

NOTE: Touch the Ohmmeter probes to both ends of the harness.
OK: GO TO STEP 2
NG: Repair the harness. (A1-B1)




Check for an open-circuit, or a short-circuit to ground between the evaporative emission ventilation solenoid and the engine control module.
- Evaporative emission ventilation solenoid connector: Disconnected
- Engine control module connector: Disconnected
OK: STOP
NG: Repair the harness. (A2-35)