Engine Coolant Temperature Sensor

WARNING: This page is about a different car, the 2005 Infiniti FX35. However, it is still accessible from the selected car via links, so may be relevant.

Check resistance between engine coolant temperature sensor terminals 1 and 2 as shown in the figure.

Fig 1: Inspecting Engine Coolant Temperature Sensor

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

< Reference data >

ENGINE COOLANT TEMPERATURE SENSOR REFERENCE DATA

Engine coolant temperature °C (°F)	Resistance kohm
20 (68)	2.1-2.9
50 (122)	0.68-1.00
90 (194)	0.236-0.260

If NG, replace engine coolant temperature sensor.

Fig 2: Resistance Vs Temperature Graph
Courtesy of NISSAN MOTOR CO., U.S.A.