Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSINFINITI2008EX35 BASE, AWDREPAIR AND DIAGNOSISENGINE PERFORMANCEENGINE CONTROL SYSTEMSENGINE CONTROL SYSTEM - DTCS U1000 TO P0153P0128 THERMOSTAT FUNCTIONCOMPONENT INSPECTION

2008 Infiniti EX35 Base, AWD

Component Inspection

2008 Infiniti EX35 Base, AWDSECTION Component Inspection

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.

RESISTANCE SPECIFICATIONS

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 Engine Coolant Temperature Sensor

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

Is the inspection result normal?

YES: INSPECTION END

NO: Replace engine coolant temperature sensor.

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.