Outline
Side impact bars built into the front and rear doors have been adopted.
Door modules have been adopted on the front and rear doors.
Structural view

Door Trim
Front Door Checker Removal/InstallationFront Under Cover No.1 Removal/Installation
1. Remove bolts A.
2. Remove screws B.
3. Remove fasteners C.
4. Remove the front under cover No.1 in the direction of the arrow in the order
of (1), (2) shown in the figure while detaching the guide D.
5. Install in the reverse order of removal. ...
Negative Battery Cable Disconnection/Connection [Skyactiv G 2.0]
WARNING:
Before removing the SRS air bag system-related parts, always disconnect the
negative battery cable and wait for 1 min. or more to allow the back-up power
supply to deplete its stored power..
Required procedure after negative battery cable disconnection/connection
...
Air Fuel Ratio (A/F) Sensor Heater Control
Outline
Based on the control of the A/F sensor heater, a stabilized oxygen concentration
is detected even at low exhaust temperatures, and feedback control of fuel injection
even at cold engine start is made possible for improved cold temperature exhaust
emission performance.
...