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 SystemIon Sensor
Purpose/Function
Detects ion generation in the combustion chamber for detecting pre-ignition.
Detects ions which occur due to fuel combustion as current by applying bias
voltage to the spark plug, which is amplified in the ignition coil internal
circuit and input to the PCM.
...
Bsm Indicator Light Does Not Flash While Under Bsm Indicator Light Flashing
Conditions (With Combination Switch Operation (Turn Signal Switch)) [Blind Spot
Monitoring (Bsm)]
Description
BSM indicator light does not flash while under BSM indicator light-flashing
conditions (with combination switch operation (turn signal switch))
The BSM indicator light does not flash or illuminate continuously,
but the cond ...
Rear Stabilizer Control Link Inspection
1. Remove the rear stabilizer control link..
2. Inspect for bending or damage. If there is any malfunction, replace the rear
stabilizer control link.
3. Rotate the ball joint stud 10 times and shake it side to side 10
times.
4. Measure the ball-joint rotational torque using an Allen wrench ...