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Home >> Mazda >> 2009 >> 5 Touring, 2.3 L >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (L3) >> Air Fuel Ratio (A/F) Sensor Inspection [L3] >> A/F Sensor Heater Circuit Open/Short Inspection (Heater) >> Notes

A/F Sensor Heater Circuit Open/Short Inspection (Heater): Notes

Fig 1: Identifying PCM And A/F Sensor Connector Terminals
G05543253Courtesy of MAZDA MOTORS CORP.
  1. Disconnect the PCM connector.
  2. Disconnect the A/F sensor connector.
  3. Inspect the following wiring harnesses for an open or short circuit. (Continuity inspection)
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