ECT Sensor No. 2

Disconnect the negative battery cable. (Refer to NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
Lift up the vehicle.
Remove the front under cover No. 1. (Refer to FRONT UNDER COVER No. 1 REMOVAL/INSTALLATION .)
Drain the engine coolant. (Refer to ENGINE COOLANT REPLACEMENT .)
Disconnect the ECT sensor No. 2 connector.
Remove the ECT sensor No. 2 using the SST .

Fig 1: Removing ECT Sensor No. 2 Using SST
Courtesy of MAZDA
Install in the reverse order of removal.
Refill the engine coolant. (Refer to ENGINE COOLANT REPLACEMENT .)