Component Inspection

WARNING: This page is about a different car, the 2010 Infiniti G37. However, it is still accessible from the selected car via links, so may be relevant.

CHECK ENGINE COOLANT TEMPERATURE SENSOR

Turn ignition switch OFF.
Disconnect engine coolant temperature sensor harness connector.
Remove engine coolant temperature sensor.

Check resistance between engine coolant temperature sensor terminals by heating with hot water as shown in the figure.

TERMINAL RESISTANCE REFERENCE CHART

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

Fig 1: Checking Resistance Between Engine Coolant Temperature Sensor Terminals By Heating With Hot Water

Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES: INSPECTION END

NO: Replace engine coolant temperature sensor.