Diagnosis Procedure

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

   Is the inspection result normal? 

   YES-1: With CONSULT: GO TO 2.

   YES-2: Without CONSULT: GO TO  3.

   NO: Replace EVAP canister. Refer to "EXPLODED VIEW ".

With CONSULT 

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 SYSTEM: SYSTEM DESCRIPTION ".
2. Start engine and let it idle.
3. Select "PURG VOL C/V" in "ACTIVE TEST" mode with CONSULT.
4. Touch "Qd" and "Qu" on CONSULT screen to adjust "PURG VOL C/V" opening and check vacuum existence.

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

   Is the inspection result normal? 

   YES: GO TO  7.

   NO: GO TO  4.

Without CONSULT 

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 SYSTEM: SYSTEM DESCRIPTION ".
4. Start engine and let it idle.

   Do not depress accelerator pedal even slightly. 

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

   Vacuum should not exist. 

6. Rev engine up to 2, 000 rpm after 100 seconds pass after starting engine.

   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 "EVAPORATIVE EMISSION SYSTEM: SYSTEM DESCRIPTION ".

   Is the inspection result normal? 

   YES: GO TO 5.

   NO: Repair EVAP purge line.

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 1: Identifying EVAP Canister Purge Volume Control Solenoid Valve, EVAP Service & Purge Port

   Courtesy of NISSAN NORTH AMERICA, INC.
3. Check that air flows freely.

   Is the inspection result normal? 

   YES-1: With CONSULT: GO TO 6.

   YES-2: Without CONSULT: GO TO  7.

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

   Fig 2: Checking EVAP Purge Hose & Purge Port

   Courtesy of NISSAN NORTH AMERICA, INC.

With CONSULT 

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

   Does engine speed vary according to the valve opening? 

   YES: GO TO  8.

   NO: GO TO 7.

Check EVAP canister purge volume control solenoid valve. Refer to "COMPONENT INSPECTION ".

Is the inspection result normal? 

YES: GO TO 8.

NO: Replace EVAP canister purge volume control solenoid valve. Refer to "EXPLODED VIEW ".

1. Disconnect EVAP control system pressure sensor harness connector.
2. Check that water is not inside connectors.

   Is the inspection result normal? 

   YES: GO TO 9.

   NO: Replace EVAP control system pressure sensor. Refer to "EXPLODED VIEW ".

Check EVAP control system pressure sensor function. 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. Refer to "EXPLODED VIEW ".

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.

Check EVAP canister vent control valve. Refer to "COMPONENT INSPECTION ".

Is the inspection result normal? 

YES: GO TO 12.

NO: Replace EVAP canister vent control valve. Refer to "EXPLODED VIEW ".

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

Refer to "EVAPORATIVE EMISSION SYSTEM: SYSTEM DESCRIPTION ".

Is the inspection result normal? 

YES: GO TO 13.

NO: Repair EVAP purge line.

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

: Check intermittent incident. Refer to "INTERMITTENT INCIDENT ".