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Sensor Inspection

Remove the engine coolant temperature sensor from the intake manifold.

With the temperature sensing portion of the engine coolant temperature sensor immersed in hot water, check resistance.

COOLANT TEMPERATURE SENSOR RESISTANCE SPECIFICATIONS

Temperature °C (°F)	Resistance (kΩ)
-30 (-22)	22.22~31.78
-10 (14)	8.16~10.74
0 (32)	5.18~6.60
20 (68)	2.27~2.73
40 (104)	1.059~1.281
60 (140)	0.538~0.650
80 (176)	0.298~0.322
90 (194)	0.219~0.243

Fig 1: Check Engine Coolant Temperature Sensor Resistance

G03851588

Courtesy of HYUNDAI MOTOR CO.

If the resistance greatly deviates from the standard value, replace the sensor.