Component Inspection

Component Inspection

1. Check the Signal waveform of HO2S
(1) IG "OFF" and connect HO2S connector.
(2) Engine start.
(3) After warming-up, monitor signal waveform of HO2S with scantool.




Fig. 1) Signal waveforms of front HO2S (the upper) and rear HO2S (the lower)
(4) Is the sensor switching properly ?