With Consult-II

Remove EVAP canister vent control valve from EVAP canister.
Check portion B of EVAP canister vent control valve for being rusted.
If NG, replace EVAP canister vent control valve. If OK, go to next step.
Reconnect harness connectors disconnected.
Turn ignition switch ON.

Fig 1: Checking Portion B Of EVAP Canister Vent Control Valve For Rust
Courtesy of NISSAN MOTOR CO., U.S.A.
Perform "VENT CONTROL/V" in "ACTIVE TEST" mode.

Check air passage continuity and operation delay time.

Make sure that new O-ring is installed properly.

CHECKING AIR PASSAGE CONTINUITY CONDITION

Condition VENT CONTROL/V	Air passage continuity between A and B
ON	No
OFF	Yes

Operation takes less than 1 second.

If NG, replace EVAP canister vent control valve.

If OK, go to next step.

Clean the air passage (Portion A to B ) of EVAP canister vent control valve using an air blower.
Perform step 6 again.