Engine Coolant Temperature Sensor

WARNING: This page is about a different car, the 2004 Infiniti M45. However, it is still accessible from the selected car via links, so may be relevant.

Check resistance as shown in the figure.

Fig 1: Checking Resistance Of ECT Sensor

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

< Reference data >

Fig 2: Inspecting Condition Chart

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

Fig 3: Inspecting Condition Reference Graph

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

If NG, replace engine coolant temperature sensor.