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Diagnostic Test

CHECK FUEL FILLER CAP DESIGN
1. Turn ignition switch OFF.
2. Check for genuine NISSAN fuel filler cap design.
  
  Fig 1: Identifying Nissan Fuel Filler Cap
  Courtesy of NISSAN NORTH AMERICA, INC.
Is the inspection result normal?

YES

GO TO STEP 2 .

NO

Replace with genuine NISSAN fuel filler cap. Refer to EXPLODED VIEW .

CHECK FUEL FILLER CAP INSTALLATION

Check that the cap is tightened properly by rotating the cap clockwise.

Is the inspection result normal?

YES

GO TO STEP 3 .

NO

Open fuel filler cap, then clean cap and fuel filler neck threads using air blower. Then retighten until ratcheting sound is heard.

CHECK FUEL FILLER CAP FUNCTION

Check for air releasing sound while opening the fuel filler cap.

Is the inspection result normal?

YES

GO TO STEP 5 .

NO

GO TO STEP 4 .

CHECK FUEL TANK VACUUM RELIEF VALVE

Refer to COMPONENT INSPECTION .

Is the inspection result normal?

YES

GO TO STEP 5 .

NO

Replace fuel filler cap with a genuine one. Refer to EXPLODED VIEW .

CHECK FOR EVAP LEAK

Refer to INSPECTION .

Is there any leak in EVAP line?

YES

Repair or replace.

NO

GO TO STEP 6 .

CHECK EVAP CANISTER VENT CONTROL VALVE

Check the following.
- EVAP canister vent control valve is installed properly.
  Refer to REMOVAL AND INSTALLATION .
- EVAP canister vent control valve.
  Refer to REMOVAL AND INSTALLATION .
Is the inspection result normal?

YES

GO TO STEP 7 .

NO

Repair or replace EVAP canister vent control valve and O-ring. Refer to REMOVAL AND INSTALLATION .

CHECK IF EVAP CANISTER IS SATURATED WITH WATER
1. Remove EVAP canister (1) with EVAP canister vent control valve (2) and EVAP control system pressure sensor attached. Refer to REMOVAL AND INSTALLATION .
  
  Fig 2: Checking EVAP Canister For Water
  Courtesy of NISSAN NORTH AMERICA, INC.
2. Check if water will drain from EVAP canister.
Does water drain from the EVAP canister?

YES

GO TO STEP 8 .

NO-1

With CONSULT: GO TO STEP 10 .

NO-2

Without CONSULT: GO TO STEP 11 .

CHECK EVAP CANISTER

Weigh the EVAP canister assembly with the EVAP canister vent control valve and EVAP control system pressure sensor attached.

The weight should be less than 2.2 kg (4.9 lb).

Is the inspection result normal?

YES-1

With CONSULT: GO TO STEP 10 .

YES-2

Without CONSULT: GO TO STEP 11 .

NO

GO TO STEP 9 .

DETECT MALFUNCTIONING PART

Check the following.
- EVAP canister for damage
- EVAP hose between EVAP canister and vehicle frame for clogging or poor connection
Repair hose or replace EVAP canister. Refer to REMOVAL AND INSTALLATION .

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

With CONSULT
1. Disconnect vacuum hose connected to EVAP service port and EVAP canister purge volume control solenoid valve from EVAP service port.
2. Start engine and let it idle.
3. Select "PURG VOL CONT/V" in "ACTIVE TEST" mode.
4. Touch "Qu" on CONSULT screen to increase "PURG VOL C/V" opening to 100%.
5. Check vacuum hose for vacuum.
  
  Vacuum should exist.
Is the inspection result normal?

YES

GO TO STEP 13 .

NO

GO TO STEP 12 .

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

Without CONSULT
1. Start engine and warm it up to normal operating temperature.
2. Stop engine.
3. Disconnect vacuum hose connected to EVAP service port and EVAP canister purge volume control solenoid valve from EVAP service port.
4. Start engine and let it idle for at least 80 seconds.
5. Check vacuum hose for vacuum when revving engine up to 2, 000 rpm.
  
  Vacuum should exist.
Is the inspection result normal?

YES

GO TO STEP 13 .

NO

GO TO STEP 12 .

CHECK VACUUM HOSE

Check vacuum hoses for clogging or disconnection. Refer to SYSTEM DIAGRAM .

Is the inspection result normal?

YES

GO TO STEP 13 .

NO

Repair or reconnect the hose.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Refer to COMPONENT INSPECTION .

Is the inspection result normal?

YES

GO TO STEP 14 .

NO

Replace EVAP canister purge volume control solenoid valve. Refer to HYDRAULIC LAYOUT .

CHECK FUEL TANK TEMPERATURE SENSOR

Refer to COMPONENT INSPECTION .

Is the inspection result normal?

YES

GO TO STEP 15 .

NO

Replace fuel level sensor unit. Refer to REMOVAL AND INSTALLATION .

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Refer to COMPONENT INSPECTION .

Is the inspection result normal?

YES

GO TO STEP 16 .

NO

Replace EVAP control system pressure sensor. Refer to EXPLODED VIEW .

CHECK EVAP PURGE LINE

Check EVAP purge line (pipe, rubber tube, fuel tank and EVAP canister) for cracks or improper connection.

Refer to SYSTEM DIAGRAM .

Is the inspection result normal?

YES

GO TO STEP 17 .

NO

Repair or reconnect the hose.

CLEAN EVAP PURGE LINE

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

GO TO STEP 18 .

CHECK EVAP/ORVR LINE

Check EVAP/ORVR line between EVAP canister and fuel tank for clogging, kinks, looseness and improper connection. For location, refer to DESCRIPTION .

Is the inspection result normal?

YES

GO TO STEP 19 .

NO

Repair or replace hoses and tubes.

CHECK RECIRCULATION LINE

Check recirculation line between filler neck tube and fuel tank for clogging, kinks, cracks, looseness and improper connection.

Is the inspection result normal?

YES

GO TO STEP 20 .

NO

Repair or replace hose, tube or filler tube.

CHECK REFUELING EVAP VAPOR CUT VALVE

Refer to COMPONENT INSPECTION .

Is the inspection result normal?

YES

GO TO STEP 21 .

NO

Replace refueling EVAP vapor cut valve with fuel tank.

CHECK FUEL LEVEL SENSOR

Refer to COMPONENT INSPECTION .

Is the inspection result normal?

YES

GO TO STEP 22 .

NO

Replace fuel level sensor unit. Refer to REMOVAL AND INSTALLATION .

CHECK INTERMITTENT INCIDENT

Refer to INTERMITTENT INCIDENT .

INSPECTION END