Tacoma, T100 & 4Runner
- Note location of ECT sensor. See ENGINE COOLANT TEMPERATURE (ECT) SENSOR LOCATION table. Manufacturer recommends removing upper timing belt cover and fuel crossover pipe for access to ECT sensor. Remove ECT sensor. See appropriate REMOVE/INSTALL/OVERHAUL article.
- 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 Fig 1. Replace ECT sensor if resistance is not within specification.
- Using NEW gasket, install ECT sensor. Tighten ECT sensor to 15 ft. lbs. (20 N.m). Fill cooling system.
ENGINE COOLANT TEMPERATURE (ECT) SENSOR LOCATION
| Model | Location |
|---|---|
| Avalon, Camry & Sienna | On Coolant Housing In Front Of Intake Manifold, At Timing Belt End Of Engine & Contains Dark Gray 2-Pin Electrical Connector With Green/Black & Brown Wires |
| Land Cruiser & LX470 | Passenger's Side Of Coolant Pipe At Front Of Engine, In Front Of Intake Manifold & Contains Gray 2-Pin Electrical Connector With Green/Black & Brown/White Wires |
| Tacoma, T100 & 4Runner | Behind Upper Timing Belt Cover, On Top Of Intake Manifold & Contains Dark Gray 2-Pin Electrical Connector With Green/Yellow & Brown/Black Wires |