ECT Sensor No. 2

WARNING: This page is about a different car, the 2018 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
Drain the engine coolant. (See Engine Coolant Replacement .)
Remove the coolant control valve. (See Coolant Control Valve Removal/Installation .)
Remove the short cord.

Fig 1: Coolant Control Valve And Short Cord
Courtesy of MAZDA MOTORS CORP.
Remove the ECT sensor No. 2 using the SST.

Fig 2: Removing ECT Sensor No. 2 Using SST With Torque Specifications
Courtesy of MAZDA MOTORS CORP.
Install in the reverse order of removal.
Refill the engine coolant. (See Engine Coolant Replacement .)