Diagnosis Procedure

1. CHECK GROUND CONNECTIONS
   1. Turn ignition switch OFF.
   2. Loosen and retighten ground screws on the body.

   Refer to "GROUND INSPECTION ".

   Fig 1: Identifying Washer Tank, Fuse And Fusible Link Box And Body Ground E15

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

   OK or NG 

   OK: GO TO 2.

   NG: Repair or replace ground connections.

2. CHECK ENGINE COOLANT TEMPERATURE SENSOR

   Refer to "COMPONENT INSPECTION ".

   OK or NG 

   OK: GO TO 3.

   NG: Replace engine coolant temperature sensor. Refer to "COMPONENT ".

3. CHECK THERMOSTAT OPERATION

   When the engine is cold [lower than 70°C (158°F)] condition, grasp lower radiator hose and confirm the engine coolant does not flow.

   OK or NG 

   OK: GO TO 4.

   NG: Repair or replace thermostat. Refer to REMOVAL AND INSTALLATION .

4. CHECK INTERMITTENT INCIDENT

   Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT .

   Refer to "WIRING DIAGRAM ".

   INSPECTION END 

1. CHECK GROUND CONNECTIONS
   1. Turn ignition switch OFF.
   2. Loosen and retighten ground screws on the body.

   Refer to "GROUND INSPECTION ".

   Fig 1: Location Of Washer Tank, Fuse And Fusible Link Box And Body Ground E15

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

   OK or NG 

   OK: GO TO 2.

   NG: Repair or replace ground connections.

2. CHECK INTAKE AIR TEMPERATURE SENSOR

   Refer to "COMPONENT INSPECTION ".

   OK or NG 

   OK: GO TO 3.

   NG: Replace mass air flow sensor (with intake air temperature sensor). Refer to "REMOVAL AND INSTALLATION ".

3. CHECK INTERMITTENT INCIDENT

Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT .

Refer to "WIRING DIAGRAM ".

INSPECTION END