Engine Coolant Temperature (ECT) Sensor: Inspection

1. Disconnect the ECT sensor connector.
2. Using SST, remove the ECT sensor and gasket.
   1. SST 09205-76030
   Fig 1: Using SST To Remove ECT Sensor And Gasket
   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Using an ohmmeter, measure the resistance between the terminals.

Resistance: Refer to  Fig 2 

If the resistance is not as specified, replace the ECT sensor.

Fig 2: Measuring Resistance Between ECT Sensor Connector Terminals w/Graph

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Install a new gasket to the ECT sensor.
2. Using SST, install the ECT sensor.
   1. SST 09205-76030
   2. Torque: 19.6 N.m (200 kgf.cm, 14 ft.lbf) 
3. Connect the ECT sensor connector.