HO2S Inspection
- Warm up the engine to normal operating temperature.
- Using the M-MDS, monitor the following:
- Vehicle speed (PID: VSS)
- Engine speed (PID: RPM)
- HO2S voltage (PID: O2S12)
- Drive the vehicle and decelerate the engine speed by releasing the accelerator pedal fully when the engine speed is 3,000 RPM or more .
- Verify that the HO2S outputs a voltage of 0.6 V or more
, one time or more, then verify that the HO2S voltage (PID: O2S12) is 0.3 V or less
while decelerating as shown in the illustration.
- If not as specified, replace the HO2S.