Nissan Versa

 Sedan Service Manual

Engine » Engine control system (EC) » P0448 EVAP canister vent control valve
Component Inspection

1.CHECK EVAP CANISTER VENT CONTROL VALVEI

1. Turn ignition switch OFF.
2. Remove EVAP canister vent control valve from EVAP canister.
3. Check portion (A) of EVAP canister vent control valve for being rusted.

Is it rusted?

YES >> Replace EVAP canister vent control valve. Refer to FL, "Removal and Installation".

NO >> GO TO 2.

2.CHECK EVAP CANISTER VENT CONTROL VALVEII

With CONSULT

1. Reconnect harness connectors disconnected.
2. Turn ignition switch ON.
3. Perform "VENT CONTROL/V" in "ACTIVE TEST" mode of "ENGINE" using CONSULT.
4. Check air passage continuity and operation delay time.

   Make sure new Oring is installed properly. Operation takes less than 1 second.

Without CONSULT

Check air passage continuity and operation delay time under the following conditions.

Make sure new Oring is installed properly. Operation takes less than 1 second.

Is the inspection result normal?

YES >> GO TO 3.

NO >> Replace EVAP canister vent control valve. Refer to FL, "Removal and Installation".

3.CHECK EVAP CANISTER VENT CONTROL VALVEIII

With CONSULT

1. Clean the air passage [portion (A) to (B)] of EVAP canister vent control valve using an air blower.
2. Perform "VENT CONTROL/V" in "ACTIVE TEST" mode of "ENGINE" using CONSULT.
3. Check air passage continuity and operation delay time.

   Make sure new Oring is installed properly. Operation takes less than 1 second.

Without CONSULT

1.  Clean the air passage [portion (A) to (B)] of EVAP canister vent control valve using an air blower.
2.  Check air passage continuity and operation delay time under the following conditions.

   Make sure new Oring is installed properly.  Operation takes less than 1 second.

Is the inspection result normal?

YES >> INSPECTION END

NO >> Replace EVAP canister vent control valve. Refer to FL, "Removal and Installation".

DTC Logic

Diagnosis Procedure

Component Inspection