Engine Coolant Temperature Sender

Using an ohmmeter, measure the resistance between the terminal 2 and ground.

Fig 1: Measuring Resistance Between Terminal 2 And Ground
Courtesy of HYUNDAI MOTOR CO.

If the resistance value is not as shown in the table, replace the temperature sender.

Hi Model

ENGINE COOLANT TEMPERATURE/RESISTANCE REFERENCE CHART - HI MODEL

Temperature [°F (°C)]	140 (60)	185 (85)	230 (110)	257 (125)
Resistance (Ω)	142	62	21.5	16.5

Low model

ENGINE COOLANT TEMPERATURE/RESISTANCE REFERENCE CHART - LOW MODEL

Temperature [°F (°C)]	Resistance (Ω)	Tolerance	Lamp
131 (55)	160	± 3°C	Low temperature lamp (ON)
140 (60)	133	± 3°C	Low temperature lamp (OFF)
248 (120)	18.5	± 3°C	High temperature lamp (OFF)
253 (123)	16.5	± 3°C	High temperature lamp (ON)