Diagnostic Procedure

1. Turn ignition switch OFF.
2. Loosen and retighten ground three screws on the body. Refer to "GROUND INSPECTION  ".

Fig 1: Checking Ground Connections

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

OK or NG 

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

Refer to "COMPONENT INSPECTION  ".

OK or NG 

1. OK: GO TO 3.
2. NG: Replace engine coolant temperature sensor.

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 

1. OK: GO TO 4.
2. NG: Repair or replace thermostat. Refer to "WATER INLET AND THERMOSTAT ASSEMBLY "

Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT  ".

Refer to "WIRING DIAGRAM  ".

1. : INSPECTION END