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Terminals Of Ecu

WARNING: This page is about a different car, the 2006 Lexus GS 430 and 2006 Lexus GS 300. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK MULTI-DISPLAY ASSEMBLY 
    Fig 1: Identifying Multi-Display Connector Terminals
    G04022708Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    SYMBOLS AND SPECIFIED CONDITION CHART

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    +B1 (K46-1) - GND1 (K46-10) O - W-B Battery Always 10 to 14 V
    ACC (K46-2) - GND1 (K46-10) GR - W-B Accessory (ON) Engine switch off Below 1 V
    Engine switch on (ACC) or on (IG) 10 to 14 V
    IG (K46-3) - GND1 (K46-10) B - W-B Ignition (ON) Engine switch off Below 1 V
    Engine switch on (IG) 10 to 14 V
    TC (K46-7) - GND1 (K46-10) BR - W-B Diagnosis ON signal Engine switch on (IG) 9 to 14 V
    GND1 (K46-10) - Body ground W-B - Body ground Ground Always Below 1 Ω
    ILL- (K46-11) - Body ground L - Body ground Illumination (rheostat) signal Light control switch off Below 1 V
    Light control switch on 10 to 14 V
    ILL+ (K46-12) - GND1 (K46-10) G - W-B Illumination (rheostat) signal Light control switch off Below 1 V
    Light control switch on 10 to 14 V
    REV (K46-13) - GND1 (K46-10) R - W-B Reverse signal Shift lever position R 10 to 14 V
    Shift lever position not on R Below 1 V
    SPD (K46-14) - GND1 (K46-10) V - W-B Vehicle speed signal Turn wheel Alternating between 9 to 14 V and below 2 V
    SLD (K46-17) - Body ground Shielded - Body ground Shielded ground Always Below 1 Ω
    TX2+ (K46-18) - GND1 (K46-10) P - W-B AVC-LAN communication signal Engine switch on (IG) 2 to 3 V
    TX2- (K46-19) - GND1 (K46-10) V - W-B AVC-LAN communication signal Engine switch on (IG) 2 to 3 V
    PKB (K46-23) - GND1 (K46-10) Y - W-B Parking brake signal Parking brake switch ON Below 1 V
    Parking brake switch OFF 10 to 14 V
    TX- (K47-1) - GND1 (K46-10) LG - W-B AVC-LAN communication signal Engine switch on (IG) 2 to 3 V
    TX+ (K47-2) - GND1 (K46-10) L - W-B AVC-LAN communication signal Engine switch on (IG) 2 to 3 V
    MACC (K47-9) - GND1 (K46-10) O - W-B Microphone accessory Engine switch off Below 1 V
    Engine switch on (IG) 5 V
    MIN- (K47-10) - GND1 (K46-10) R - W-B Telephone voice signal (Bluetooth) Always Below 1 Ω
    MIN+ (K47-11) - GND1 (K46-10) G - W-B Telephone voice signal (Bluetooth) Engine switch on (ACC) 5 V
    SGND (K47-12) - Body ground W-B - Body ground Ground Always Below 1 Ω
    VG (K47-15) - Body ground Shielded - Body ground Shielded ground Always Below 1 Ω
    SYNC (K47-16) - GND1 (K46-10) G - W-B Display signal (synchronize) Navigation display ON -
    B (K47-17) - GND1 (K46-10) Y - W-B Display signal (blue) Navigation display ON -
    G (K47-18) - GND1 (K46-10) W - W-B Display signal (green) Navigation display ON -
    R (K47-19) - GND1 (K46-10) B - W-B Display signal (red) Navigation display ON -
    VR (K47-20) - GND1 (K46-10) R - W-B Video return signal Always Below 1 Ω
    IVO- (K47-21) - Body ground BR - Body ground Microphone voice signal Always Below 1 Ω
    IVO+ (K47-22) -GND1 (K46-10) Y - W-B Microphone voice signal Sound received by microphone -
    SLD (K47-23) - Body ground Shielded - Body ground Shielded ground Always Below 1 Ω
    SNSE (K47-26) - Body ground W-B - Body ground Ground Always Below 1 Ω
    GND (h1-2) - Body ground G - Body ground Ground Always Below 1 Ω
    IVI- (h1-5) - GND (h1-2) W - G Navigation voice signal Voice guidance ON Waveform synchronized with voice is output
    IVI+ (h1-6) - GND (h1-2) B - G Navigation voice signal Voice guidance ON Waveform synchronized with voice is output
    ISLD (h1-7) - Body ground Shielded - Body ground Shield ground Always Below 1 Ω
    SNSE (h1-8) - Body ground Y - Body ground Ground Always Below 1 Ω
    CSLD (h1-9) - Body ground Shielded - Body ground Shield ground Always Below 1 Ω
    REV (h1-12) - GND (h1-2) L - G Reverse signal Shift lever position R 10 to 14 V
    Shift lever position not on R Below 1 V
    SPD (h1-13) - GND (h1-2) P - G Vehicle speed signal Turn wheel Alternating between 9 to 14 V and below 2 V
    ADET (h1-14) - GND (h1-2) GR - G Accessory (ON) Engine switch off Below 1 V
    Engine switch on (ACC) or on (IG) 10 to 14 V
    VG (h1-19) - Body ground Shielded - Body ground Shield ground Always Below 1 Ω
    B (h1-20) - GND (h1-2) Y - G Display signal (blue) Navigation display ON -
    G (h1-21) - GND (h1-2) G - G Display signal (green) Navigation display ON -
    R (h1-22) - GND (h1-2) R - G Display signal (red) Navigation display ON -
    VR (h1-23) - GND (h1-2) B - G Video return signal Always Below 1 Ω
    SYNC (h1-24) - GND (h1-2) W - G Display signal (synchronize) Navigation display ON -
    MIC- (h1-26) - GND (h1-2) W - G Microphone voice signal Sounds received by microphone -
    MIC+ (h1-27) - GND (h1-2) B - W Microphone voice signal Sounds received by microphone -
    TX- (h1-29) - GND (h1-2) W - B AVC-LAN communication signal Engine switch on (ACC) 2 to 3 V
    TX+ (h1-30) - GND (h1-2) B - G AVC-LAN communication signal Engine switch on (ACC) 2 to 3 V
    +B (h1-31) - GND (h1-2) L - G Battery Always 10 to 14 V
  2. CHECK NAVIGATION ECU 
    Fig 2: Identifying Navigation ECU Connector Terminals
    G04022709Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    SYMBOLS AND SPECIFIED CONDITION CHART

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    GND (h1-2) - Body ground G - Body ground Ground Always Below 1 Ω
    IVI- (h1-5) - GND (h1-2) W - G Navigation voice signal Voice guidance ON Waveform synchronized with voice is output
    IVI+ (h1-6) - GND (h1-2) B - G Navigation voice signal Voice guidance ON Waveform synchronized with voice is output
    ISLD (h1-7) - Body ground Shielded - Body ground Shield ground Always Below 1 Ω
    SNSE (h1-8) - Body ground Y - Body ground Ground Always Below 1 Ω
    CSLD (h1-9) - Body ground Shielded - Body ground Shield ground Always Below 1 Ω
    REV (h1-12) - GND (h1-2) L - G Reverse signal Shift lever position R 10 to 14 V
    Shift lever position not on R Below 1 V
    SPD (h1-13) - GND (h1-2) P - G Vehicle speed signal Turn wheel Alternating between 9 to 14 V and below 2 V
    ADET (h1-14) - GND (h1-2) GR - G ACC detect Engine switch off 4 to 6 V
    Engine switch on (ACC) or on (IG) Below 1 V
    VG (h1-19) - Body ground Shielded - Body ground Shield ground Always Below 1 Ω
    B (h1-20) - GND (h1-2) Y - G Display signal (blue) Navigation display ON -
    G (h1-21) - GND (h1-2) G - G Display signal (green) Navigation display ON -
    R (h1-22) - GND (h1-2) R - G Display signal (red) Navigation display ON -
    VR (h1-23) - GND (h1-2) B - G Video return signal Always Below 1 Ω
    SYNC (h1-24) - GND (h1-2) W - G Display signal (synchronize) Navigation display ON -
    MIC- (h1-26) - GND (h1-2) W - G Microphone voice signal Sounds received by microphone -
    MIC+ (h1-27) - GND (h1-2) B - W Microphone voice signal Sounds received by microphone -
    TX- (h1-29) - GND (h1-2) W - B AVC-LAN communication signal Engine switch on (ACC) 2 to 3 V
    TX+ (h1-30) - GND (h1-2) B - G AVC-LAN communication signal Engine switch on (ACC) 2 to 3 V
    +B (h1-31) - GND (h1-2) L - G Battery Always 10 to 14 V
  3. CHECK RADIO RECEIVER ASSEMBLY 
    Fig 3: Identifying Radio Receiver Connector Terminals
    G04022710Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    SYMBOLS AND SPECIFIED CONDITION CHART

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    TXM+ (K53-9) - GND (K54-20) L - BR AVC-LAN communication signal Engine switch on (ACC) 2 to 3 V
    TXM- (K53-10) - GND (K54-20) LG - BR AVC-LAN communication signal Engine switch on (ACC) 2 to 3 V
    ATX+ (K54-5) - GND (K54-20) L - BR AVC-LAN communication signal Engine switch on (ACC) 2 to 3 V
    ATX- (K54-15) - GND (K54-20) LG - BR AVC-LAN communication signal Engine switch on (ACC) 2 to 3 V
    TX+ (K56-9) - GND (K54-20) L - BR AVC-LAN communication signal Engine switch on (ACC) 2 to 3 V
    TX- (K56-10) - GND ( K54-20) LG - BR AVC-LAN communication signal Engine switch on (ACC) 2 to 3 V
    GND (K54-20) - Body ground BR - Body ground Ground Always Below 1 Ω
  4. CHECK STEREO COMPONENT AMPLIFIER 
    Fig 4: Identifying Stereo Component Amplifier Connector Terminals
    G04022711Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    SYMBOLS AND SPECIFIED CONDITION CHART

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    TX- (U29-7) - GND (U31-16) L - W-B AVC-LAN communication signal Engine switch on (ACC) 2 to 3 V
    TX+ (U29-8) - GND (U31-16) LG - W-B AVC-LAN communication signal Engine switch on (ACC) 2 to 3 V
    GND (U31-16) - Body ground W-B - Body ground Ground Always Below 1 Ω
  5. CHECK TELEVISION CAMERA ECU 
    Fig 5: Identifying Television Camera ECU Connector Terminals
    G04022712Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    SYMBOLS AND SPECIFIED CONDITION CHART

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    TX+ (K64-29) - GND1 (K65-8) P - W-B AVC-LAN communication signal Engine switch on (ACC) 2 to 3 V
    TX- (K64-30) - GND1 (K65-8) V - W-B AVC-LAN communication signal Engine switch on (ACC) 2 to 3 V
    GND1 (K65-8) - Body ground W-B - Body ground Ground Always Below 1 Ω
  6. CHECK GATEWAY ECU 
    Fig 6: Identifying Gateway ECU Connector Terminals
    G04022713Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    SYMBOLS AND SPECIFIED CONDITION CHART

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    GTX+ (K66-6) - GND (K66-24) L - W-B AVC-LAN communication signal Engine switch on (ACC) 2 to 3 V
    GTX- (K66-21) - GND (K66-24) LG - W-B AVC-LAN communication signal Engine switch on (ACC) 2 to 3 V
    GND (K66-24) - Body ground W-B - Body ground Ground Always Below 1 Ω
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