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. For the location of EVAP service port, Refer to EVAPORATIVE EMISSION LINE DRAWING .
2. Start engine and let it idle.
3. Select PURG VOL CONT/V in ACTIVE TEST mode with CONSULT-II.
   Fig 1: Displaying PURG VOL CONT/V In Active Test Mode (CONSULT-II)

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 2: PURG VOL CONT/V Options (CONSULT-II)

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

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. For the location of EVAP service port, Refer to EVAPORATIVE EMISSION LINE DRAWING .
4. Start engine and let it idle.

   Do not depress accelerator pedal even slightly  .

5. Check vacuum gauge indication before 60 seconds passed after starting engine.

   Vacuum should not exist  .

6. Revving engine up to 2,000 rpm after 100 seconds passed after starting engine.

Vacuum should 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  .
2. Blow air into each hose and EVAP purge port C  .
   Fig 3: Locating Service Port A, Valve B & Purge Port C

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

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. See .
   Fig 4: Displaying PURG VOL CONT/V In Active Test Mode (CONSULT-II)

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

OK or NG

1. OK: Go to  8.
2. NG: Go to 7.

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  .

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 , P0453 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