Component Inspection

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

Specification

RESISTANCE SPECIFICATION

Temperature		Rear HO2S Heater Resistance (Ω)	Temperature		Rear HO2S Heater Resistance (Ω)
(°C)	(°F)	Rear HO2S Heater Resistance (Ω)	(°C)	(°F)	Rear HO2S Heater Resistance (Ω)
20	68	9.2	400	752	17.7
100	212	10.7	500	932	19.2
200	392	13.1	600	1,112	20.7
300	572	14.6	700	1,272	22.5

Fig 1: Measuring Resistance Between Terminals 3 And 4 Of Sensor Connector

Courtesy of KIA MOTORS AMERICA, INC.

Is resistance within the 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 " 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.