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.
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.
   Fig 1: Identifying EVAP Service Port

   Courtesy of NISSAN MOTOR CO., U.S.A.
5. Touch "Qd" and "Qu" on CONSULT-II screen to adjust "PURG VOL CONT/V" opening and check vacuum existence.
   Fig 2: PURG VOL CONT/V Chart

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

Fig 3: CONSULT-II Display Active Test

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

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.
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 

Fig 4: Identifying EVAP Service Port

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

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  .
2. Blow air into each hose and EVAP purge port C  .
3. Check that air flows freely.

OK or NG 

1. OK (With CONSULT-II): GO TO 6.
2. OK (Without CONSULT-II): GO TO  7.
3. NG: Repair or clean hoses and/or purge port.
   Fig 5: Connecting EVAP Purge Hose And Purge Port

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

Fig 6: Checking Air Flows Freely

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

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.

OK or NG 

1. OK: GO TO  8.
2. NG: GO TO 7.
   Fig 7: CONSULT-II Display Active Test

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

Refer to COMPONENT INSPECTION .

OK or NG 

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

1. Disconnect EVAP control system pressure sensor harness connector.
2. Check connectors for water.

   Water should not exist. 

   Fig 8: Identifying EVAP Control System Pressure Sensor

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

OK or NG 

1. OK: GO TO 9.
2. NG: Replace EVAP control system pressure sensor.

Refer to DTC Confirmation Procedure for DTC P0452, DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR , DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR  and DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR .

OK or NG 

1. OK: GO TO 10.
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 11.
2. NG: Clean the rubber tube using an air blower.

Refer to COMPONENT INSPECTION .

OK or NG 

1. OK: GO TO 12.
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 13.
2. NG: Replace it.

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

1. GO TO 14.

Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT .

1. INSPECTION END