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Home › Mazda › 2004 › 3 i, Standard › Repair and Diagnosis › Engine Performance › System › Engine Control System › Middle Heated Oxygen Sensor (Ho2S) Inspection [CALIFORNIA Emission Regulation Applicable Model] › Middle HO2S Circuit Open/Short Inspection (Sensor) › Notes

Middle HO2S Circuit Open/Short Inspection (Sensor): Notes

  1. Disconnect the PCM connector.
  2. Inspect the following wiring harnesses for an open or short circuit. (Continuity inspection)
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