DTC Diagnosis Procedure

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

Is the inspection result normal?

YES

With CONSULT: GO TO 2.

YES

Without CONSULT: GO TO 3.

NO

Replace EVAP canister. Refer to Removal and Installation .

With CONSULT

1. Disconnect vacuum hose connected to EVAP canister purge volume control solenoid valve (1) at EVAP service port (2).

   Courtesy of NISSAN NORTH AMERICA, INC.

2. Start engine and let it idle.
3. Select "PURG VOL CONT/V" in "ACTIVE TEST" mode of "ENGINE" using 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 (1) at EVAP service port (2) and install vacuum gauge.

   Courtesy of NISSAN NORTH AMERICA, INC.

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, 000rpm after 100 seconds passed 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 CONSULT Function .

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.

   Courtesy of NISSAN NORTH AMERICA, INC.

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

   Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES

With CONSULT: GO TO 6.

YES

Without CONSULT: GO TO 7.

NO

Repair or clean hoses and/or purge port.

With CONSULT

1. Start engine.
2. Perform "PURG VOL CONT/V" in "ACTIVE TEST" mode of "ENGINE" using 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.

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 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 Removal and Installation .

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 Removal and Installation .

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. Refer to Removal and Installation .

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

Refer to CONSULT Function .

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.

Check intermittent incident. Refer to Intermittent Incident .

INSPECTION END