Tacoma Regular Cab 4WD L4-2.7L (3RZ-FE) (1999)
/Page-451001.png)
Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection
1. DRAIN ENGINE COOLANT
2. REMOVE ECT SENSOR
a. Disconnect the engine wire protector from the 3 brackets.
b. Disconnect the ECT sensor connector.
c. Using a 19 mm deep socket wrench, remove the ECT sensor and gasket.
3. INSPECT ECT SENSOR
Using an ohmmeter, measure the resistance between the terminals.