Diagnosis Procedure

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

INSPECTION START
Do you have CONSULT?

Yes or No

Yes: GO TO 2.

No: GO TO 3.
CHECK EVAP CANISTER VENT CONTROL VALVE CIRCUIT
With CONSULT
1. Turn ignition switch OFF and then ON.
2. Select "VENT CONTROL/V" in "ACTIVE TEST" mode with CONSULT.
3. Touch "ON/OFF" on CONSULT screen.
4. Check for operating sound of the valve.
Clicking noise should be heard .

OK or NG

OK: GO TO 7.

NG: GO TO 3.
CHECK EVAP CANISTER VENT CONTROL VALVE POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect EVAP canister vent control valve (3) harness connector.
  - Fuel filler pipe (top of frame view) (1)
  - EVAP control system pressure sensor (2)
  - EVAP canister (4)
  - Drain filter (5)
  - : Vehicle front
3. Turn ignition switch ON.
  
  Fig 1: Identifying Fuel Filler Pipe, EVAP Control System Pressure Sensor, EVAP Canister Vent Control Valve, EVAP Canister And Drain Filter
  Courtesy of NISSAN NORTH AMERICA, INC.
4. Check voltage between EVAP canister vent control valve terminal 1 and ground with CONSULT or tester.
Voltage: Battery voltage

OK or NG

OK: GO TO 5.

NG: GO TO 4.

Fig 2: Checking Voltage Between EVAP Canister Vent Control Valve Terminal 1 And Ground Using Tester
Courtesy of NISSAN NORTH AMERICA, INC.
DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors E41, C1
- Harness for open or short between EVAP canister vent control valve and IPDM E/R
Repair harness or connectors.
CHECK EVAP CANISTER VENT CONTROL VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 117 and EVAP canister vent control valve terminal 2.
  Refer to WIRING DIAGRAM .
  
  Continuity should exist .
4. Also check harness for short to ground and short to power.
OK or NG

OK: GO TO 7.

NG: GO TO 6.
DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors C1, E41
- Harness for open or short between EVAP canister vent control valve and ECM
Repair open circuit or short to ground or short to power in harness or connectors.
CHECK RUBBER TUBE FOR CLOGGING
1. Disconnect rubber tube connected to EVAP canister vent control valve.
2. Check the rubber tube for clogging.
OK or NG

OK: GO TO 8.

NG: Clean the rubber tube using an air blower.
CHECK DRAIN FILTER
Refer to "COMPONENT INSPECTION ".

OK or NG

OK: GO TO 9.

NG: Replace drain filter. Refer to "DESCRIPTION ".
CHECK EVAP CANISTER VENT CONTROL VALVE
Refer to "COMPONENT INSPECTION ".

OK or NG

OK: GO TO 10.

NG: Replace EVAP canister vent control valve. Refer to "REMOVAL AND INSTALLATION ".
CHECK INTERMITTENT INCIDENT
Refer to "INTERMITTENT INCIDENT ".

INSPECTION END