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Home >> Subaru >> 2017 >> Outback 2.5i Premium >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System (Diagnostics - Introduction) (H4DO) >> Engine Control Module (ECM) I/O Signal >> Electrical Specification >> Waveform 4
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Waveform 4

Fig 1: Waveform 4
G11583261Courtesy of SUBARU OF AMERICA, INC.
Measured terminal Front oxygen (A/F) sensor heater signal (E158) No. 5 (+) - Engine ground 3 (E158) No. 63 (-):
Rear oxygen sensor heater signal (E158) No. 10 (+) - Engine ground 3 (E158) No. 63 (-):
Measuring condition While engine idling
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