Diagnostic Procedure

WARNING: This page is about a different car, the 2004 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.

CHECK RUBBER TUBE
1. Turn ignition switch OFF.
2. Disconnect rubber tube connected to EVAP canister vent control valve.
  
  Fig 1: Disconnecting Rubber Tube Connected To EVAP Canister Vent Control Valve
  Courtesy of NISSAN MOTOR CO., U.S.A.
3. Check the rubber tube for clogging.
OK or NG
1. OK: GO TO 2.
2. NG: Clean rubber tube using an air blower.
CHECK EVAP CANISTER VENT CONTROL VALVE
Refer to "EVAP CANISTER VENT CONTROL VALVE "

OK or NG
1. OK: GO TO 3.
2. NG: Replace EVAP canister vent control valve.
CHECK IF EVAP CANISTER SATURATED WITH WATER
1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor attached.
2. Check if water will drain from the EVAP canister.
Yes or No
1. Yes: GO TO 4.
2. No: GO TO 6.
  
  Fig 2: Removing EVAP Canister With EVAP Canister Vent Control Valve And EVAP Control System Pressure Sensor Attached
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK EVAP CANISTER
Weigh the EVAP canister with the EVAP canister vent control valve and EVAP control system pressure sensor attached.

The weight should be less than 2.1 kg (4.6 lb).

OK or NG
1. OK: GO TO 6.
2. NG: GO TO 5.
DETECT MALFUNCTIONING PART
Check the following.
- EVAP canister for damage
- EVAP hose between EVAP canister and vehicle frame for clogging or poor connection
  1. Repair hose or replace EVAP canister.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR
1. Disconnect EVAP control system pressure sensor harness connector.
2. Check connectors for water.
  Water should not exist.
OK or NG
1. OK: GO TO 7.
2. NG: Replace EVAP control system pressure sensor.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
Refer to "COMPONENT INSPECTION ".

OK or NG
1. OK: GO TO 8.
2. NG: Replace EVAP control system pressure sensor.
CHECK INTERMITTENT INCIDENT
Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".
1. INSPECTION END