Cylinder Head Temperature (CHT) Sensor Removal/Installation

NOTE:

Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZI 3.7 V6] .)
Perform the following procedure for easier access.
1. Complete the "BEFORE SERVICE PRECAUTION". (See BEFORE SERVICE PRECAUTION .)
2. Remove the engine cover. (See ENGINE COVER REMOVAL/INSTALLATION .)
3. Remove the ventilation hose. (See QUICK RELEASE CONNECTOR (EMISSION SYSTEM) REMOVAL/INSTALLATION .)
4. Remove the TP sensor connector. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION .)
5. Remove the vacuum hose (to purge solenoid valve). (See QUICK RELEASE CONNECTOR (EMISSION SYSTEM) REMOVAL/INSTALLATION .)
6. Remove the vacuum hose (to master back). (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION .)
7. Remove the dynamic chamber. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION .)
8. Remove the fuel hose. (See QUICK RELEASE CONNECTOR REMOVAL/INSTALLATION .)
9. Remove the fuel distributor. (See FUEL INJECTOR REMOVAL/INSTALLATION .)
10. Remove the intake manifold. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION .)
11. Disconnect the CHT sensor connector.
12. Remove the CHT sensor using the following tools.
  - Socket 3/8", 20mm, 6 point
  - Ratchet handle and torque wrench 3/8" Drive
13. Install in the reverse order of removal.
  Tightening torque
  
  9-12 N.m {92-122 kgf.cm, 80-106 in.lbf}
14. Complete the "AFTER SERVICE PRECAUTION". (See AFTER SERVICE PRECAUTION .)
Fig 1: CHT Sensor
Courtesy of MAZDA MOTORS CORP.