Coolant Temperature Sensor/Switch (For Computer): Service and Repair

Engine Coolant Temperature (ECT) Sensor Replacement

Removal Procedure




1. Relieve the pressure in the coolant reservoir by turning the coolant reservoir cap slightly counterclockwise.

Caution: Refer to Battery Disconnect Caution Battery Disconnect Caution in Cautions and Notices.

2. Disconnect the negative battery.




3. Remove the variable intake system (VIS) vacuum tank. Refer to Intake Manifold Tuning (IMT) Valve Vacuum Reservoir Replacement Service and Repair.




4. Disconnect the engine coolant temperature (ECT) sensor connector.
5. Remove the ECT sensor from the cylinder head.

Installation Procedure




1. Coat the threads of the ECT sensor with sealer.

Notice: Refer to Fastener Notice Fastener Notice in Cautions and Notices.

2. Install the ECT sensor.

Tighten the ECT sensor to 17 Nm (13 lb ft).

3. Connect the ECT connector.




4. Install the VIS vacuum tank. Refer to Intake Manifold Tuning (IMT) Valve Vacuum Reservoir Replacement Service and Repair.

Tighten the VIS vacuum tank retaining bolts to 8 Nm (71 lb in).

5. Connect the negative battery cable.
6. Fill the coolant system.