Repair Procedure: Inspection

Resistance 

1. Turn the ignition switch OFF.
2. Disconnect the HO2S connector.
3. Measure resistance between the HO2S terminals 3 and 4.
4. Check that the resistance is within the specification.

   Specification:  3.3 ~ 4.1 Ω [20°C (68°F)]

Wave Form 

1. Check the signal waveform of the HO2S using the GDS.

   Specification:  Refer to Wave Form  below. "Wave Form"