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Home >> Mazda >> 2007 >> 6 Mazdaspeed >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (L3 With TC) >> Heated Oxygen Sensor (Ho2S) Inspection >> Rear HO2S Circuit Open/Short Inspection (Heater) >> Notes

Rear HO2S Circuit Open/Short Inspection (Heater): Notes

Fig 1: Identifying Fuse HO2S Connector Terminals
G04325279Courtesy of MAZDA MOTORS CORP.
  1. Disconnect the PCM connector.
  2. Disconnect the rear HO2S connector.
  3. Inspect the following wiring harnesses for an open or short circuit. (Continuity inspection)
    Fig 2: Identifying PCM Sensor Connector Terminals
    G04325280Courtesy of MAZDA MOTORS CORP.