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Cylinder Head Temperature (CHT) Sensor Removal/Installation

NOTE:

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

Disconnect the negative battery cable.
Remove the following part for easier access.
Perform the following procedure to remove the intake manifold.
1. Remove the ventilation hose. (see QUICK RELEASE CONNECTOR (EMISSION SYSTEM) REMOVAL/INSTALLATION )
2. Remove the vacuum hose (to purge solenoid valve). (see QUICK RELEASE CONNECTOR (EMISSION SYSTEM) REMOVAL/INSTALLATION )
3. Remove the fuel hose. (see QUICK RELEASE CONNECTOR (FUEL SYSTEM) REMOVAL/INSTALLATION )
4. Remove the fuel distributor. (see FUEL INJECTOR REMOVAL/INSTALLATION .)
Remove the intake manifold. (see INTAKE-AIR SYSTEM REMOVAL/INSTALLATION .)
Disconnect the CHT sensor connector.
Remove the CHT sensor using the following tools.
- Socket
  3/8", 20mm, 6point
- Ratchet handle and torque wrench
  3/8" Drive
Fig 1: Identifying CHT Sensor Connector
Courtesy of MAZDA MOTORS CORP.
Install in the reverse order of removal.
Tightening torque

10 N.m {102 kgf.cm, 89 in.lbf}

Fig 2: Installing CHT Sensor
Courtesy of MAZDA MOTORS CORP.