Diagnosis Procedure

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

Is the inspection result normal? 

YES-1 : With CONSULT-III: GO TO 2.

YES-2 : Without CONSULT-III: GO TO  3.

NO : Replace EVAP canister.

With CONSULT-III 

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 "SYSTEM DIAGRAM ".
2. Turn ignition switch ON (READY).
3. Perform "PURG VOL CONT/V" in "ACTIVE TEST" mode with CONSULT-III.
4. Rev engine up to 2,000 rpm.
5. Touch "Qd" and "Qu" on CONSULT-III screen to adjust "PURG VOL CONT/V" opening and check vacuum existence.
   VACUUM EXISTENCE REFERENCE
   
   

   PURG VOL CONT/V	Vacuum
   100%	Existed
   0%	Not existed

Is the inspection result normal? 

YES : GO TO  7.

NO : GO TO  4.

Without CONSULT-III 

1. Activate "INSPECTION MODE 1 " to start engine, and warm up engine to normal operating temperature.
2. Turn ignition switch OFF.
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 "SYSTEM DIAGRAM ".
4. Lift up the vehicle.
5. Activate "INSPECTION MODE 1 " to start engine, and let engine idle.
6. Wait at least 150 seconds.
7. Vehicle speed is 0 km/h (0 MPH).
8. Check vacuum hose for vacuum.

   Vacuum should not exist. 

9. Drive vehicle at a speed of 70 km/h (43 MPH) or more.
10. Check vacuum hose for vacuum.

    Vacuum should exist. 

Is the inspection result normal? 

YES : GO TO  7.

NO : GO TO 4.

1. Turn ignition switch OFF.
2. Check EVAP purge line for improper connection or disconnection.

   Refer to "SYSTEM DIAGRAM ".

Is the inspection result normal? 

YES : GO TO 5.

NO : Repair it.

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

   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 2: Checking Air Flows Freely

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

Is the inspection result normal? 

YES-1 : With CONSULT-III: GO TO 6.

YES-2 : Without CONSULT-III: GO TO  7.

NO : Repair or clean hoses and/or purge port.

With CONSULT-III 

1. Turn ignition switch ON (READY).
2. Perform "PURG VOL CONT/V" in "ACTIVE TEST" mode with CONSULT-III. Check that engine speed varies according to the valve opening.

Is the inspection result normal? 

YES : GO TO  8.

NO : GO TO 7.

Refer to "COMPONENT INSPECTION ".

Is the inspection result normal? 

YES : GO TO 8.

NO : 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. 

Is the inspection result normal? 

YES : GO TO 9.

NO : Replace EVAP control system pressure sensor.

Refer to "DTC LOGIC " for DTC P0452, "DTC LOGIC " for DTC P0453.

Is the inspection result normal? 

YES : GO TO 10.

NO : Replace EVAP control system pressure sensor.

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

Is the inspection result normal? 

YES : GO TO 11.

NO : Clean the rubber tube using an air blower.

Refer to "COMPONENT INSPECTION ".

Is the inspection result normal? 

YES : GO TO 12.

NO : Replace EVAP canister vent control valve.

Inspect EVAP purge line (pipe and rubber tube). Check for evidence of leaks.

Refer to "SYSTEM DIAGRAM ".

Is the inspection result normal? 

YES : GO TO 13.

NO : Replace it.

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

GO TO 14.

Refer to "INTERMITTENT INCIDENT ".

INSPECTION END