Failing to investigate the cause of the following warnings may lead to the system operating abnormally and possibly cause an accident.
Have the vehicle inspected by your Toyota dealer immediately.


Stop the vehicle immediately.
Follow the correction procedures.Lost Communication with ECM / PCM "A" (U0100,U0129)
DESCRIPTION
The power steering ECU receives signals from the ECM and the brake actuator assembly
(skid control ECU) via the CAN communication system.
DTC No.
DTC Detection Condition
Trouble Area
U0100
...
Front Passenger Side Door Entry Unlock Function does not Operate
DESCRIPTION
If the front passenger door entry lock function operates normally, but its entry
unlock function does not, this means that the request code from the front passenger
door is being output normally. In this case, a malfunction in the touch sensor ...
System Diagram
SYSTEM DIAGRAM
Communication Table
Sender
Receiver
Signal
Line
Main Body ECU
(Driver Side Junction Block Assembly)
Clearance Warning ECU Assembly
Destination information
...