ECT Sensor No. 2

Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION (US) .)
Remove the front under cover No. 1 and the front under cover No. 2. (See FRONT UNDER COVER No. 1 REMOVAL/INSTALLATION .) (See FRONT UNDER COVER No. 2 REMOVAL/INSTALLATION .)
Drain the engine coolant. (See ENGINE COOLANT REPLACEMENT .)
Disconnect the ECT sensor No. 2 connector.
Remove the ECT sensor No. 2 using the SST.

Fig 1: Engine Coolant Temperature Sensor No. 2 With Torque Specification
Courtesy of MAZDA MOTORS CORP.
Install in the reverse order of removal.
Refill the engine coolant. (See ENGINE COOLANT REPLACEMENT .)