Diagnostic Procedure

1. Turn ignition switch "OFF".
2. Check EVAP canister for cracks.

OK or NG 

1. OK: (With CONSULT-II) GO TO 2.
2. OK: (Without CONSULT-II GO TO  3 .
3. NG: Replace EVAP canister.

WITH CONSULT-II 

1. Disconnect vacuum hose connected to EVAP canister purge volume control solenoid valve at EVAP service port and install vacuum gauge.
   Fig 1: Disconnecting Vacuum Hose Connected To EVAP Canister Purge

   Courtesy of NISSAN MOTOR CO., U.S.A.
2. Start engine and let it idle.
3. Select "PURG VOL CONT/V" in "ACTIVE TEST" mode with CONSULT-II.
4. Rev engine up to 2,000 RPM.
5. Touch "Qd" and "Qu" on CONSULT-II screen to adjust "PURG VOL CONT/V" opening and check vacuum existence.

Fig 2: CONSULT-II Function Display Active Test

Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 3: Vacuum Chart

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OK or NG 

1. OK: GO TO  7 .
2. NG: GO TO  4 .

WITHout CONSULT-II 

1. Start engine and warm it up to normal operating temperature.
2. Stop engine.
3. Disconnect vacuum hose connected to EVAP canister purge volume control solenoid valve at EVAP service port and install vacuum gauge.
   Fig 4: Disconnecting Vacuum Hose Connected To EVAP Canister Purge Volume Control Solenoid Valve

   Courtesy of NISSAN MOTOR CO., U.S.A.
4. Start engine and let it idle for at least 80 seconds.
5. Check vacuum gauge indication when revving engine up to 2,000 RPM.

   Vacuum should exist. 

6. Release the accelerator pedal fully and let idle.

   Vacuum should not exist. 

OK or NG 

1. OK: GO TO  7 .
2. NG: GO TO 4.

1. Turn ignition switch "OFF".
2. Check EVAP purge line for improper connection or disconnection. Refer to "EVAPORATIVE EMISSION LINE DRAWING  " .

OK or NG 

1. OK: GO TO 5.
2. NG: Repair it.

1. Disconnect purge hoses connected to EVAP service port A and EVAP canister purge volume control solenoid valve B. 
   Fig 5: Disconnecting Purge Hoses Connected To EVAP Service Port A And EVAP Canister Purge Volume Control Solenoid Valve B

   Courtesy of NISSAN MOTOR CO., U.S.A.
2. Blow air into each hose and EVAP purge port C. 
3. Check that air flows freely.

Fig 6: Blowing Air Into Intake Manifold

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OK or NG 

1. OK: (With CONSULT-II) GO TO 6.
2. OK: (Without CONSULT- GO TO  7 .
3. NG: Repair or clean hoses and/or purge port.

WITH CONSULT-II 

1. Start engine.
2. Perform "PURG VOL CONT/V" in "ACTIVE TEST" mode with CONSULT-II. Check that engine speed varies according to the valve opening.

Fig 7: CONSULT-II Function Display Active Test

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

1. OK: GO TO  8 .
2. NG: GO TO 7.

WITH CONSULT-II 

Check air passage continuity of EVAP canister purge volume control solenoid valve under the following conditions.

Fig 8: Identifying EVAP Canister Purge Volume Control Solenoid Valve

Courtesy of NISSAN MOTOR CO., U.S.A.

WITHout CONSULT-II 

Check air passage continuity of EVAP canister purge volume control solenoid valve under the following conditions.

Fig 9: Checking Air Passage Continuity Of EVAP Canister Purge Volume Control Solenoid Valve

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

1. OK: GO TO 8.
2. NG: Replace EVAP canister purge volume control solenoid valve.

1. Turn ignition switch "OFF".
2. Check disconnection or improper connection of hose connected to EVAP control system pressure sensor.

OK or NG 

1. OK: GO TO 9.
2. NG: Repair it.

1. Disconnect EVAP control system pressure sensor harness connector.
   Fig 10: Disconnecting EVAP Control System Pressure Sensor Harness Connector

   Courtesy of NISSAN MOTOR CO., U.S.A.
2. Check connectors for water.

   Water should not exist. 

OK or NG 

1. OK: GO TO 10.
2. NG: Replace EVAP control system pressure sensor.

Refer to "DTC CONFIRMATION PROCEDURE  " for DTC P0452, DTC P0452 EVAP SYSTEM PRESSURE SENSOR  and P0453, DTC P0453 EVAP SYSTEM PRESSURE SENSOR  .

OK or NG 

1. OK: GO TO 11.
2. NG: Replace EVAP control system pressure sensor.

1. Disconnect rubber tube connected to EVAP canister vent control valve.
2. Check the rubber tube for clogging.

OK or NG 

1. OK: GO TO 12.
2. NG: Clean the rubber tube using an air blower.

1. Remove EVAP canister vent control valve from EVAP canister.
2. Check portion B  of EVAP canister vent control valve for being rusted.

Fig 11: Removing EVAP Canister Vent Control Valve From EVAP Canister

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

1. OK: GO TO 13.
2. NG: Replace EVAP canister vent control valve.

WITH CONSULT-II 

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

Fig 12: CONSULT-II Function Display Active Test

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WITHout CONSULT-II 

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

Fig 13: Checking Air Passage Continuity

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Make sure new O-ring is installed properly. 

OK or NG 

1. OK: GO TO  15 .
2. NG: GO TO 14.

1. Clean the air passage (Portion A  to B  ) of EVAP canister vent control valve using an air blower.
2. Perform Test No. 13 again.

OK or NG 

1. OK: GO TO 15.
2. NG: Replace EVAP canister vent control valve.

Inspect EVAP purge line (pipe and rubber tube). Check for evidence of leaks. Refer to "EVAPORATIVE EMISSION LINE DRAWING  " .

OK or NG 

1. OK: GO TO 16.
2. NG: Replace it.

Clean EVAP purge line (pipe and rubber tube) using air blower.

1. GO TO 17.

Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT  " .

1. INSPECTION END