Diagnostic Procedure

CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten two ground screws on the body. Refer to ,"GROUND INSPECTION ".
  
  Fig 1: Loosening Two Ground Screws On Body
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG

OK : GO TO 2.

NG : Repair or replace ground connections.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR FOR WATER
1. Disconnect EVAP control system pressure sensor harness connector.
  
  Fig 2: Disconnecting EVAP Control System Pressure Sensor Harness Connector
  Courtesy of NISSAN MOTOR CO., U.S.A.
2. Check sensor harness connector for water.
  Water should not exist .
OK or NG

OK : GO TO 3.

NG : Repair or replace harness connector.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
Refer to ,"COMPONENT INSPECTION ".

OK or NG

OK : GO TO 4.

NG : Replace EVAP control system pressure sensor.
CHECK INTERMITTENT INCIDENT
Refer to ,"TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

Refer to ,"WIRING DIAGRAM ".

: INSPECTION END