Component Inspection

Measure resistance between terminals 3 and 4 of the sensor connector (Component side)

Specification

TEMPERATURE AND RESISTANCE SPECIFICATION

Temp.(°C)	Temp.(°F)	Front HO2S Heater Resistance(Ω)
20	68	9.2
100	212	10.7
200	392	13.1
300	572	14.6
400	752	17.7
500	932	19.2
600	1,112	20.7
700	1,292	22.5

Fig 1: Measuring Resistance Between Terminals 3 And 4 Of Sensor Connector (Component Side)

Courtesy of HYUNDAI MOTOR AMERICA

Is HO2S heater resistance display near the specified value?
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 " procedure.
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 " procedure.