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HO2S On-Vehicle Inspection

HO2S On-vehicle Inspection

HO2S Heater
1. Disconnect HO2S connector with ignition mode of keyless push start system in "OFF".
2. Using ohmmeter, measure resistance of HO2S connector (sensor side) between terminals "3" and "4" at sensor connector.
If faulty condition is found, replace HO2S.

NOTE: Sensor temperature affects resistance value largely. Make sure that sensor heater is at specified temperature.

HO2S heater resistance
5.0 - 6.4 Ohms at 20 °C (68 °F)




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