Repair Procedures: Inspection

Blow warm air into the in-car sensor air inlet. Measure sensor resistance between 2 and 4 terminals.

Fig 1: In-Car Sensor Connector Terminals

Courtesy of HYUNDAI MOTOR AMERICA

Temperature [°C (°F)]	Resistance between terminals 2 and 4 (kΩ)
60 (140)	7.463 ± 2.6%
50 (122)	10.810 ± 2.2%
35 (95)	19.59 ± 1.6%
25 (77)	30.00 ± 1.2%
15 (59)	47.130 ± 1.7%
0 (32)	97.710 ± 2.4%
-15 (5)	216.1 ± 3.2%
-30 (-22)	509.6 ± 4.1%

NOTE: In car sensor is negative type thermistor that resistance will rise with lower temperature, and reduce with higher temperature.