Engine Coolant Temperature (ECT) Sensor Removal/Installation

WARNING: This page is about a different variant/trim than selected.

WARNING:

A hot engine can cause severe burns. Turn off the engine and wait until it is cool before removing the ECT sensor.

Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
Drain the engine coolant. (See ENGINE COOLANT REPLACEMENT .)
Remove the following parts:
1. Plug hole plate (See PLUG HOLE PLATE REMOVAL/INSTALLATION .)
2. Battery (See BATTERY REMOVAL/INSTALLATION .)
3. Air inlet pipe (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION .)
Disconnect the ECT sensor connector.
Remove the ECT sensor using the SST.

Fig 1: Engine Coolant Temperature Sensor Components With Torque Specification
Courtesy of MAZDA MOTORS CORP.
Install in the reverse order of removal.
Refill the engine coolant. (See ENGINE COOLANT REPLACEMENT .)