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2004
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RX-8 1.3 3
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Repair and Diagnosis
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Engine Performance
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Engine Control Systems
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Rear Heated Oxygen Sensor (Ho2S) Inspection
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Circuit Open/Short Inspection
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Notes
Circuit Open/Short Inspection: Notes
Disconnect the PCM connector.
Disconnect the rear HO2S connector.
Inspect the following wiring harnesses for open or short circuit. (Continuity inspection)
Fig 1: Disconnecting Rear HO2S Connector
Courtesy of MAZDA MOTORS CORP.