FixVault

System Diagram

Fig 1: Seat Heater System Diagram
G05856184Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Communication table 

COMMUNICATION CHART

Sender Receiver Signal Line
Rear power seat module switch Climate control ECU Seat heater signal LIN line
Seat heater switch Rear power seat module switch Seat heater signal Serial line
Outer mirror switch Rear power seat module switch Seat heater signal CAN line
Rear power seat module switch A/C amplifier Voltage signal CAN line