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Mazda
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2007
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CX-9 Touring, 3.5 C, FWD
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Repair and Diagnosis
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Engine Performance
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Engine Control Systems
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Engine Control System (MZI-3.5)
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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. (See
PCM REMOVAL/INSTALLATION
.)
Inspect the following wiring harness for open or short (continuity check).
Fig 1: Identifying PCM, HO2S And Main Relay 2 Connector Terminals
Courtesy of MAZDA MOTORS CORP.