Circuit Description
When the passenger's door ECU receives a reverse signal that is transmitted multiply from the engine ECU, the passenger's door ECU drives the outer rear view mirror assembly, then the mirror turns into the reverse position.
NOTE:
Power mirror control system has a function with a large-scale body multiplex communication. First of all, inspect the communication function according to "how to proceed with troubleshooting", and check that no malfunction exists in the communication system, then proceed with the troubleshooting.