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Check HO2S(B1S2) Performance

Warm up the engine to normal operating temperature.
Connect VMI to GDS and select "Oscilloscope".
Connect Channel A positive probe to Pin No. 1 (high) and Channel A negative probe to Pin No. 2 (low).
Specification: Refer to Fig 1

Fig 1: Screen Display - Signal Waveform Of HO2S 2 At Normal Condition
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