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System Diagram

WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Power Mirror Control System Diagram
G05784616Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Communication Table: 

COMMUNICATION CHART

Sender Receiver Signal Line
Outer mirror switch assembly Front door ECU LH
  • LH mirror master switch signal Mirror control switch signal (RIGHT)
  • Mirror control switch signal (LEFT)
  • Mirror control switch signal (UP)
  • Mirror control switch signal (DOWN)
  • Mirror retract switch signal
CAN
Front door ECU RH
  • RH mirror master switch signal
  • Mirror control switch signal (RIGHT)
  • Mirror control switch signal (LEFT)
  • Mirror control switch signal (UP)
  • Mirror control switch signal (DOWN)
  • Mirror retract switch signal
Air conditioning amplifier Front door ECU LH Mirror heater operation request signal
Front door ECU RH Mirror heater operation request signal
Hybrid vehicle control ECU Front door ECU LH Reverse signal
Front door ECU RH Reverse signal