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Home >> Lexus >> 2021 >> LC 500 2D Convertible >> Repair and Diagnosis >> Body & Frame >> Seats >> Front Power Seat Control System - Diagnostics - Introduction (Convertible) >> Front Power Seat Control System >> System Diagram [07/2020 - ] >> System Diagram [07/2020 - ]
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System Diagram [07/2020 - ]

  1. for Driver Seat 
    Fig 1: Front Power Seat Control System Diagram - For Driver Seat (1 Of 3)
    GTY963885Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 2: Front Power Seat Control System Diagram - For Driver Seat (2 Of 3)
    GTY963599Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 3: Front Power Seat Control System Diagram - For Driver Seat (3 Of 3)
    GTY959625Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    COMMUNICATION TABLE

    Sender Receiver Signal Line
    ECM Main body ECU (multiplex network body ECU)
    • Transmission information
    • Shift position P signal
    CAN
    Front multiplex network door ECU LH Main body ECU (multiplex network body ECU)
    • M1 switch signal
    • M2 switch signal
    • M3 switch signal
    • SET switch signal
    CAN
    Main body ECU (multiplex network body ECU) Front multiplex network door ECU LH
    • Shift position P signal
    • Vehicle speed signal
    • Transmission information
    • Driving position buzzer request
    • Driver seat position request
    • Driver seat position data
    CAN
    Certification ECU (smart key ECU assembly) Main body ECU (multiplex network body ECU)
    • Engine switch signal
    • Memory call replay request
    • Key identification No. 1 to No. 7 acquisition condition
    CAN
    Position control ECU assembly LH Main body ECU (multiplex network body ECU)
    • State signal of driver seat
    • State signal of driving position buzzer
    CAN
    Multiplex network master switch assembly Main body ECU (multiplex network body ECU) Door control switch signal LIN
  2. for Front Passenger Seat 
    Fig 4: Front Power Seat Control System Wiring Diagram - For Front Passenger Seat (1 Of 2)
    GTY963186Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 5: Front Power Seat Control System Wiring Diagram - For Front Passenger Seat (2 Of 2)
    GTY963278Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    COMMUNICATION TABLE

    Sender Receiver Signal Line
    ECM Main body ECU (multiplex network body ECU)
    • Transmission information
    • Shift position P signal
    CAN
    Main body ECU (multiplex network body ECU) Position control ECU assembly RH
    • Shift position P signal
    • Vehicle speed signal
    • Transmission information
    • Front passenger seat position request
    • Front passenger seat position data
    CAN