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Home >> Toyota >> 2000 >> 4Runner Base, 4WD >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Engine Controls - System & Component Testing - 4-Cylinder >> Engine Sensors & Switches >> Engine Coolant Temperature (ECT) Sensor >> Camry CNG & Gasoline Models, Camry Solara, RAV4, Tacoma & 4Runner

Camry CNG & Gasoline Models, Camry Solara, RAV4, Tacoma & 4Runner

  1. Ensure ignition is off. Disconnect electrical connector from ECT sensor. See ENGINE COOLANT TEMPERATURE (ECT) SENSOR LOCATION  table. Remove ECT sensor. See ENGINE COOLANT TEMPERATURE (ECT) SENSOR under ENGINE SENSORS & SWITCHES in REMOVAL, OVERHAUL & INSTALLATION - 4-CYLINDER article.
  2. Place probe end of ECT sensor and thermometer in container of water. Attach ohmmeter between electrical terminals on ECT sensor. Heat water and note that resistance is within specification in relation to temperature. See Figure. Replace ECT sensor if resistance is not within specification.
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