The Blind Spot Monitor is a system that has 2 functions;
These functions use same sensors.
RCTA function: When a vehicle approaching from the right or left at the rear of the vehicle is detected, both outside rear view mirror indicators will flash.
Toyota CH-R Service Manual > Power Door Lock Control System: System Diagram
SYSTEM DIAGRAM
Power Door Lock Control System
Communication Table
Sender
Receiver
Signal
Line
Multiplex Network Master Switch Assembly
Main Body ECU (Multiplex Network Body ECU)
Door control switch signal
...
Toyota CH-R Service Manual > Air Conditioning System(for Automatic Air Conditioning System With Top-mounted
Air Conditioner Pressure Sensor): Lost Communication with ECM (U0100-U0142,U0155)
DESCRIPTION
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
Memory
U0100
Lost Communication with ECM
No communication with ECM
CAN communication system
ECM
...