Diagnosis Procedure

WARNING: This page is about a different car, the 2011 Nissan Xterra. However, it is still accessible from the selected car via links, so may be relevant.

CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten three ground screws on the body. Refer to "GROUND INSPECTION ".
  
  Fig 1: Checking Ground Connections
  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 "EXPLODED VIEW ".
CHECK THERMOSTAT OPERATION
When the engine is cold [lower than 70°C (158°F)] condition, grasp lower radiator hose and confirm that 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 "INTERMITTENT INCIDENT ".

INSPECTION END