Diagnosis Procedure

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

Fig 1: Identifying Body Ground (E9 And E15) And Washer Tank With Fuse And Fusible Link Box
Courtesy of NISSAN NORTH AMERICA, INC.

OK or NG

OK: GO TO 2.

NG: Repair or replace ground connections.
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 ".
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 .
CHECK INTERMITTENT INCIDENT
Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT .

Refer to "WIRING DIAGRAM ".

INSPECTION END