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Home >> Mazda >> 2016 >> CX-9 Signature >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Oil Temperature Sensor Inspection >> Resistance Inspection
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Resistance Inspection

NOTE:
  • The engine oil pressure sensor and engine oil temperature sensor cannot be removed as a single unit. When replacing the engine oil temperature sensor, replace the engine oil pressure sensor/engine oil temperature sensor.
  1. Turn the steering wheel to full right lock.
  2. Disconnect the negative battery terminal. (Refer to NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  3. Lift up the vehicle.
  4. Remove the front splash shield (RH). (Refer to FRONT SPLASH SHIELD REMOVAL/INSTALLATION .)
  5. Disconnect the engine oil pressure sensor/engine oil temperature sensor connector. (Refer to ENGINE OIL PRESSURE SENSOR/ENGINE OIL TEMPERATURE SENSOR REMOVAL/INSTALLATION .)
  6. Measure the resistance between engine oil pressure sensor/engine oil temperature sensor terminals E and C.
    Fig 1: Identifying Engine Oil Pressure Sensor/Engine Oil Temperature Sensor Connector Terminals
    G10947177Courtesy of MAZDA MOTORS CORP.
    RESISTANCE SPECIFICATION

    Engine oil temperature (°C {°F}) Resistance (Kilohms)
    -40 {-40} Approx. 44.9
    0 Approx. 5.78
    25 Approx. 2.04
    140 Approx. 0.0719
    Fig 2: Engine Oil Temperature Resistance Graph
    G10947178Courtesy of MAZDA MOTORS CORP.