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Circuit Open/Short Inspection: Notes

  1. Disconnect the PCM connector.
  2. Disconnect the rear HO2S connector.
  3. Inspect the following wiring harnesses for open or short circuit. (Continuity inspection)
    Fig 1: Identifying Main Relay, Rear HO2S & PCM Wiring Harness Side Connector Terminals
    G04563023Courtesy of MAZDA MOTORS CORP.
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