Canister Purge Control Valve: Testing and Inspection

INSPECTION

ORVR VENT VALVE MODULE CHECK




1. Blow air through over vent valve module nipple (A). Check that the air flows out of nipple (B) and nipple (C).




2. Connect a hand vacuum pump to nipple (A) of the over vent valve module.
3. With air flow through nipple (C) obstructed, apply a vacuum and check that the vacuum is maintained.




4. Check air tightness, by applying a vacuum with voltage applied directly from the battery to the over vent valve module and without applying voltage.

BATTERY VOLTAGE NORMAL CONDITION
Applied Vacuum maintained
Not applied Vacuum leaks




5. Measure the resistance between. the terminals of the solenoid.

Standard value: 17 - 21 Ohms @ 20 °C (68 °F)

6. Replace over vent valve module if resistance is out of specification.