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Home >> Mazda >> 2006 >> 6 s, 4D Wagon, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Engine Control System (L3)) >> Heated Oxygen Sensor (Ho2S) Inspection >> Front HO2S circuit open/short inspection (sensor) >> Middle/rear HO2S heater resistance inspection

Middle/rear HO2S heater resistance inspection

WARNING: This page is about a different variant/trim than selected.
  1. Disconnect the middle/rear HO2S connector.
  2. Measure the middle/rear HO2S resistance between terminals C and D.
    • If not within the specification, replace the HO2S.

    Middle/rear HO2S heater resistance 

    2-50 ohms 

    Fig 1: Identifying Middle And Rear HO2S Harness Side Connector Terminals
    G04325175Courtesy of MAZDA MOTORS CORP.
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