Engine Coolant Temperature Sensor Removal / Installation

Fig 1: Removing /Installing Engine Coolant Temperature Sensor

Courtesy of MAZDA MOTORS CORP.

Disconnect negative battery cable. See BATTERY DISCONNECT .
Partially drain the cooling system. See ENGINE COOLANT REPLACEMENT -- 3.0L for 3.0L or ENGINE COOLANT REPLACEMENT - 4.0L , for 4.0L
Disconnect engine coolant temperature (ECT) sensor connector.
NOTE:
- The 2.3L engine has a CHT sensor. See CYLINDER HEAD TEMPERATURE (CHT) SENSOR REMOVAL / INSTALLATION - 2.3L .
Remove the ECT sensor.

Fig 2: Removing ECT Sensor (3.0L/4.0L Engine)
Courtesy of MAZDA MOTORS CORP.
To install, reverse the removal procedure.
Tightening torque

16-24 N.m { 1.6-2.4 kgf.m, 12-17 ft.lbf }