Component Inspection

Measure resistance between power terminal and control terminal of the sensor connector. (Component side)

Specification

SPECIFICATIONS

Temp.(°C)	Temp.(°F)	Heater Resistance (Ω)
18 ~ 20	64 ~ 82	3.3 ~ 4.1

Fig 1: Measuring Resistance Between Power Terminal And Control Terminal Of Sensor Connector (Component Side)

Courtesy of HYUNDAI MOTOR CO.

Is resistance within specification?
YES
- Check for poor connection between PCM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to VERIFICATION OF VEHICLE REPAIR .
NO
- Check HO2S for contamination, deterioration, or damage. Substitute with a known-good HO2S and check for proper operation. If the problem is corrected, replace HO2S and then go to VERIFICATION OF VEHICLE REPAIR .