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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. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  3. Lift up the vehicle.
  4. Remove the front splash shield (RH). (See FRONT SPLASH SHIELD REMOVAL/INSTALLATION .)
  5. Disconnect the engine oil pressure sensor/engine oil temperature sensor connector. (See 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: Engine Oil Pressure Sensor/Engine Oil Temperature Sensor Connector Terminals
G11436097Courtesy of MAZDA MOTORS CORP.

Specification (Reference) 

Engine oil temperature (°C {°F}) Resistance (Kilohms)
-40 {-40} Approx. 44.9
0 {32} Approx. 5.78
25 {77} Approx. 2.04
140 {284} Approx. 0.0719 am 2zzw00011360
Fig 2: Engine Oil Temperature Resistance Graph
G11436098Courtesy of MAZDA MOTORS CORP.