Diagnostic Procedure

WARNING: This page is about a different car, the 2007 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

INSPECTION START
Do you have CONSULT-II?

Yes or No

Yes: GO TO 2.

No: GO TO 3.
CHECK EVAP CANISTER VENT CONTROL VALVE CIRCUIT
With CONSULT-II
1. Turn ignition switch OFF and then turn ON.
2. Select "VENT CONTROL/V" in "ACTIVE TEST" mode with CONSULT-II.
  
  Fig 1: Identifying CONSULT-II Display - ACTIVE TEST
  Courtesy of NISSAN NORTH AMERICA, INC.
3. Touch "ON/OFF" on CONSULT-II 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 harness connector.
  
  Fig 2: Identifying EVAP Canister Vent Control Valve And Fuel Filler Pipe
  Courtesy of NISSAN NORTH AMERICA, INC.
3. Turn ignition switch ON.
4. Check voltage between EVAP canister vent control valve terminal 1 and ground with CONSULT-II or tester.
  Voltage: Battery voltage
  
  Fig 3: Checking Voltage Between EVAP Canister Vent Control Valve Terminal
  Courtesy of NISSAN NORTH AMERICA, INC.
OK or NG

OK: GO TO 5.

NG: GO TO 4.
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 EVAP CANISTER VENT CONTROL VALVE
Refer to "COMPONENT INSPECTION ".

OK or NG

OK: GO TO 9.

NG: Replace EVAP canister vent control valve.
CHECK INTERMITTENT INCIDENT
Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

INSPECTION END