Diagnostic Procedure

1. Turn ignition switch OFF.
2. Loosen and retighten two ground screws on the body. Refer to "GROUND INSPECTION ".
   Fig 1: Locating M28 & M54 Body Ground Screws

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

OK or NG 

OK: GO TO  2.

NG: Repair or replace ground connections.

1. Disconnect EVAP control system pressure sensor harness connector.
2. Check sensor harness connector for water.

   Water should not exist  .

OK or NG 

OK: GO TO  3.

NG: Repair or replace harness connector.

Fig 2: Identifying EVAP Pressure Sensor And EVAP Vent Control Valve At EVAP Canister

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

Refer to "COMPONENT INSPECTION ".

OK or NG 

OK: GO TO  4.

NG: Replace EVAP control system pressure sensor.

Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

For wiring diagram, refer to WIRING DIAGRAM .

: INSPECTION END