Cylinder Head Temperature (CHT) Sensor Removal/Installation [MZI-3.7]

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Do not reuse the CHT sensor, install a new sensor.

Disconnect the negative battery cable.
Remove the following part for easier access.
1. Complete the "BEFORE SERVICE PRECAUTION". See BEFORE SERVICE PRECAUTION [MZI-3.7] .
2. Remove the engine cover. See ENGINE COVER REMOVAL/INSTALLATION [MZI-3.7] .
3. Remove the ventilation hose. See QUICK RELEASE CONNECTOR (EMISSION SYSTEM) REMOVAL/INSTALLATION [MZI-3.7] .
4. Remove the TP sensor connector. See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [MZI-3.7] .
5. Remove the vacuum hose (to purge solenoid valve). See QUICK RELEASE CONNECTOR (EMISSION SYSTEM) REMOVAL/INSTALLATION [MZI-3.7] .
6. Remove the vacuum hose (to master back). See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [MZI-3.7] .
7. Remove the dynamic chamber. See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [MZI-3.7] .
8. Remove the fuel hose. See QUICK RELEASE CONNECTOR REMOVAL/INSTALLATION [MZI-3.7] .
9. Remove the fuel distributor. See FUEL INJECTOR REMOVAL/INSTALLATION [MZI-3.7] .
10. Remove the intake manifold. See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [MZI-3.7] .
Disconnect the CHT sensor connector.
Remove the CHT sensor using the following tools.
- Socket
  3/8", 20 mm, 6 point
- Ratchet handle and torque wrench
  3/8" Drive
Install in the reverse order of removal.
Tightening torque

8.9-12.1 N.m {91-123 kgf.cm, 79-107 in.lbf}

Fig 1: Identifying CHT Sensor
Courtesy of MAZDA MOTORS CORP.
Complete the "AFTER SERVICE PRECAUTION". See AFTER SERVICE PRECAUTION [MZI-3.7] .