Engine Coolant Temperature Sensor

WARNING: This page is about a different car, the 2006 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.

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

Fig 1: Identifying Sensor Resistance While Monitoring Temperature

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

< Reference data >

CHECKING CONDITION

Temperature °C (°F)	Resistance kΩ
20 (68)	2.1 - 2.9
50 (122)	0.68 - 1.0
90 (194)	0.236 - 0.260

If NG, replace engine coolant temperature sensor.

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