Diagnostic Procedure

1. Turn ignition switch OFF.
2. Loosen and retighten three ground screws on the body.

   Refer to "GROUND INSPECTION ".

OK or NG 

1. OK: GO TO 2.
2. NG: Repair or replace ground connections.

Fig 1: Checking Ground Connections

Courtesy of NISSAN MOTOR CO., U.S.A.

1. Disconnect EVAP control system pressure sensor harness connector.
   Fig 2: Locating EVAP Canister Vent Control Valve & EVAP Control System Pressure Sensor

   Courtesy of NISSAN MOTOR CO., U.S.A.
2. Check sensor harness connector for water.
   1. Water should not exist. 

OK or NG 

1. OK: GO TO 3.
2. NG: Repair or replace harness connector.

Refer to "COMPONENT INSPECTION ".

OK or NG 

1. OK: GO TO 4.
2. NG: Replace EVAP control system pressure sensor.

Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

For wiring diagram, refer to "WIRING DIAGRAM ".

1. : INSPECTION END