Canister Purge Control Valve: Testing and Inspection

INSPECTION

NOTE:
When disconnecting the vacuum hose, make an identification mark on it so that it can be reconnected to its original position.

1. Disconnect the vacuum hose from the solenoid valve.
2. Detach the harness connector.
3. Connect a vacuum pump to the nipple which is connected to intake manifold.
4. Apply vacuum and check when voltage is applied to the PCSV and when the voltage is discontinued.





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

PCSV coil resistance(Ohms) : 19.0 - 22.0Ohms at 20°C (68°F)


INSPECTION

Purge Control Solenoid Valve (PCSV) is installed on the surge tank and controls the passage between the canister and the intake manifold. It is a solenoid valve and is open when the PCM grounds the valve control line. When the passage is open (PCSV ON), fuel vapors stored in the canister is transferred to the intake manifold.




SPECIFICATION






CIRCUIT DIAGRAM





COMPONENT INSPECTION
1. Turn ignition switch OFF.
2. Disconnect PCSV connector.
3. Measure resistance between PCSV terminals 1 and 2.




4. Check that the resistance is within the specification.

Specification: Refer to SPECIFICATION.