HO2S Heater
- Disconnect HO2S connector with ignition mode of keyless push start system in "OFF".
- Using ohmmeter, measure resistance of HO2S connector (sensor side) between terminals "3" and "4" at sensor connector.
If faulty condition is found, replace HO2S, see A/F SENSOR AND HO2S REMOVAL AND INSTALLATION .
NOTE: Sensor temperature affects resistance value largely. Make sure that sensor heater is at specified temperature.HO2S heater resistance
5.0 - 6.4 Ω at 20°C (68°F)