Diagnosis Procedure

If DTC P0441 is displayed with other DTC such as P2122, P2123, P2127, P2128 or P2138, first perform the confirmation procedure (trouble diagnosis) for other DTC.

Is applicable DTC detected?

YES

Perform diagnosis of applicable. Refer to DTC Index (For turbo high pressure model) or DTC Index (For turbo low pressure model).

NO

GO TO 2.

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

Is the inspection result normal?

YES

With CONSULT: Go to  3 .

YES

Without CONSULT: Go to  4 .

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.
2. Start engine and let it idle.
3. Select "PURG VOL CONT/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 8.

NO

GO TO  5.

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 Component Location .
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  8.

NO

GO TO 5.

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

   Refer to System Description .

Is the inspection result normal?

YES

GO TO 6.

NO

Repair it.

1. Disconnect purge hoses connected to EVAP service port and EVAP canister purge volume control solenoid valve .

   Courtesy of NISSAN NORTH AMERICA, INC.

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

   Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES

With CONSULT: Go to  7 .

YES

Without CONSULT: Go to  8 .

NO

Repair or clean hoses and/or purge port.

With CONSULT

1. Start engine.
2. Perform "PURG VOL CONT/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  9.

NO

GO TO 8.

Refer to Component Inspection .

Is the inspection result normal?

YES

GO TO 9.

NO

Replace EVAP canister purge volume control solenoid valve. Refer to Exploded View .

1. Disconnect EVAP control system pressure sensor harness connector. Refer to Exploded View .
2. Check connectors for water.

   Water should not exist.

Is the inspection result normal?

YES

GO TO 10.

NO

Replace EVAP control system pressure sensor. Refer to Exploded View .

Refer to DTC Description  for DTC P0452, DTC Description  for DTC P0453.

Is the inspection result normal?

YES

GO TO 11.

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 12.

NO

Clean the rubber tube using an air blower.

Refer to Component Inspection .

Is the inspection result normal?

YES

GO TO 13.

NO

Replace EVAP canister vent control valve. Refer to Exploded View .

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

Refer to System Description .

Is the inspection result normal?

YES

GO TO 14.

NO

Replace it.

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

INSPECTION END