Diagnostic Test

1. Turn ignition switch OFF.
2. Disconnect ECT sensor harness connector.
3. Remove ECT sensor. Refer to EXPLODED VIEW .
4. Check resistance between ECT sensor terminals by heating with hot water as shown in the figure.
   Fig 1: Checking Engine Coolant Temperature Sensor

   Courtesy of NISSAN NORTH AMERICA, INC.

   ECT sensor		Condition		Resistance (kΩ)
   +	-
   Terminal
   1	2	Temperature [°C (°F)]	20 (68)	2.37 - 2.63
   			50 (122)	0.68 - 1.00
   			90 (194)	0.236 - 0.260

Is the inspection result normal?

YES 

Check intermittent incident. Refer to INTERMITTENT INCIDENT .

NO 

Proceed to DIAGNOSIS PROCEDURE .