Repair Procedures: Inspection

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

Fig 1: Identifying In-Car Sensor Air Inlet Connector Terminals

Courtesy of HYUNDAI MOTOR AMERICA

TEMPERATURE SPECIFICATION

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.