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Home >> Mazda >> 2009 >> RX-8 R3, 1.3 2 >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Coolant Temperature (ECT) Sensor Inspection [13B-MSP] >> Resistance Inspection

Resistance Inspection

  1. Remove the battery cover. (See BATTERY REMOVAL/INSTALLATION [13B-MSP] .)
  2. Disconnect the negative battery cable.
  3. Remove the generator. (See GENERATOR REMOVAL/INSTALLATION [13B-MSP] )
  4. Drain the engine coolant. (See ENGINE COOLANT REPLACEMENT [13B-MSP] )
  5. Disconnect the ECT sensor connector.
  6. Remove the ECT sensor. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [13B-MSP] .)
  7. Place the detection part of the ECT sensor in water and verify that the resistance between ECT sensor terminals A and B is as indicated in the table while gradually increasing water temperature.

ECT sensor resistance 

ECT SENSOR RESISTANCE SPECIFICATION

Water temperature (°C {°F}) Resistance (ohm)
20 {68} 2,205-2,695
80 (176} 287-349
91 {196} 227-240