1. Disconnect the negative battery cable..
2. Remove the following parts:
a. Trunk board.
b. Trunk end trim.
c. Rear scuff plate.
d. Trunk side trim.
e. D-pillar trim.
3. Partially peel back the seaming welt.
4. Remove the fastener A.

5. Take the shaded area shown in the figure, and pull the C-pillar trim in the direction of the arrow (1) while detaching the pin B.
6. Remove the C-pillar trim in the direction of the arrow (2) shown in the figure while detaching guide C, tabs D.
CAUTION:
If the C-pillar trim is pulled in the direction of the arrow (1) forcefully, guide C may be damaged. Carefully pull the C-pillar trim so as not to damage guide C.
7. Install in the reverse order of removal.
B Pillar Upper Trim Removal/Installation
Center Panel Removal/InstallationMain Relay Control [Skyactiv G 2.0]
Outline
Supplies power to each part by switching the main relay on/off at the optimal
timing according to the vehicle conditions.
Block Diagram
Operation
When the ignition is switched ON, the main relay turns on and electrical
power is supplied to each sensor and devic ...
Air Fuel Ratio (A/F) Sensor Heater Control [Skyactiv G 2.0]
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.
...
Heated Oxygen Sensor (HO2 S) Heater Control
Outline
Based on the control of the HO2S 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.
Both ...