2007 Lexus GS 450hFACTORY OEM SERVICE PROCEDURE

System Diagram

Fig 1: Power Window Control System Diagram
G05314958Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Communication table 

COMMUNICATION CHART

Sender Receiver Signal Line
Multiplex Network Master Switch Front Multiplex Network Door ECU RH (Front Passenger Side Door ECU)
  • Remote control signal
  • Key-off operation signal
 BEAN
Multiplex Network Master Switch Rear Multiplex Network Door ECU RH (Rear Door RH ECU)
  • Remote control signal
  • Key-off operation signal
 BEAN
Multiplex Network Master Switch Rear Multiplex Network Door ECU LH (Rear Door LH ECU)
  • Remote control signal
  • Key-off operation signal
 BEAN
Multiplex Network Master Switch Multiplex Network Switch (for Front Passenger Side) Window lock switch signal BEAN
Multiplex Network Master Switch Multiplex Network Switch (for Rear LH) Window lock switch signal BEAN
Multiplex Network Master Switch Multiplex Network Switch (for Rear RH) Window lock switch signal BEAN
Front Multiplex Network Door ECU LH (Driver Side Door ECU) Multiplex Network Master Switch Door key-linked power window control signal BEAN
Main Body ECU RH Multiplex Network Master Switch
  • Front door courtesy light switch signal
  • Power switch status signal
 BEAN
Power Source Control ECU Multiplex Network Master Switch Power switch status signal BEAN
Certification ECU Multiplex Network Master Switch Wireless transmitter-linked power window control signal BEAN
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.