Component Inspection

Measure resistance between Heater Control terminal and Heater Power terminal of the HO2S connector. (Component side)

Specification: :

Fig 1: Measuring Resistance Between Heater Control Terminal & Heater Power Terminal Of HO2S Connector

Courtesy of HYUNDAI MOTOR CO.

Is HO2S heater resistance display near the specified value?
YES
- Check for poor connection between ECM 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