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 device.
When the ignition is switched off from ON, an on-request signal is received from each control (such as drive-by-wire control, electric variable valve timing control) and the main relay turns on for a specified period.
Front Body Control Module (Fbcm) Removal/Installation
Multiplex Communication SystemClock Spring Inspection [Standard Deployment Control System]
1. Disconnect the negative battery cable and wait for 1 min or more..
2. Remove the driver?side air bag module..
3. Remove the steering wheel..
4. Remove the column cover..
5. Remove the clock spring..
6. Verify that the continuity is as indicated in the table.
If not as indicated ...
Floor Under Cover Removal/Installation
1. Lift up the vehicle.
2. Remove bolts A.
3. Remove fasteners B.
4. Remove the floor under cover No.1.
5. Remove nuts C.
6. Remove fasteners D.
7. Remove bolts E.
8. Remove the floor under cover No.2.
9. Remove bolts F.
10. Remove the fastener G.
11. Remove the floor ...
Bumper Slider Removal/Installation
Front Bumper Slider
1. Disconnect the negative battery cable..
2. Remove the seal board upper..
3. Remove the front bumper..
4. Remove bolts A.
5. Pull the front bumper slider in the direction of the arrow while detaching
pins B and hook C.
6. Install in the reverse order of removal ...