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Home >> Mazda >> 2012 >> 6 i Touring >> Repair and Diagnosis >> External Pages >> Different car >> Section 571 (Engine Control System (MZI-3.7)) >> Cylinder Head Temperature (CHT) Sensor Inspection [MZI-3.7] >> Resistance Inspection

Resistance Inspection

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the CHT sensor connector.
  2. Measure the resistance between the CHT sensor terminals.
    • If it is not within the specification, replace the CHT sensor.

      Measure the cylinder head temperature sensor resistance (approx.. 

      CYLINDER HEAD TEMPERATURE SENSOR RESISTANCE CHART

      Cylinder head temperature (°C {°F}) Resistance (kilohm)
      20 {68} 37.387
      80 {176} 3.775
      Fig 1: Identifying CHT Sensor Connector
      G06205293Courtesy of MAZDA MOTORS CORP.

      Cylinder head temperature sensor characteristics graph (reference) 

      Fig 2: Cylinder Head Temperature Sensor Characteristics Graph (Reference)
      G04969716Courtesy of MAZDA MOTORS CORP.
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