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Terminals Of Ecu

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  1. MULTI-DISPLAY: 
    Fig 1: Identifying ECM Terminals
    G03009291Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    ECM TERMINALS VOLTAGE SPECIFICATION

    Symbols (Terminals No.) Wiring Color Terminal Description Condition Specification
    NTSC (M3-1) - GND1 (M5-3) G - W-B Display signal DVD is played on multi-display -
    SGD1 (M3-4) - Body ground R - Body ground Ground Always Below 1 V
    SG (M3-5) - Body ground Shielded - Body ground Shielded ground Always Below 1 V
    SGND (M4-3) - Body ground W-B - Body ground Ground Always Below 1 V
    MIN+ (M4-4) - GND1 (M5-3) G - W-B Microphone voice signal See "microphone check" (see NAVIGATION CHECK MODE (MICROPHONE CHECK)  ) -
    MIN- (M4-5) - Body ground R - Body ground Microphone voice signal See "microphone check" (see NAVIGATION CHECK MODE (MICROPHONE CHECK)  ) -
    MACC (M4-6) - GND1 (M5-3) Y - W-B Microphone AMP power supply Turn ignition switch OFF --> ON Below 1 V --> 5 V
    TX+ (M4-13) - GND1 (M5-3) P - W-B AVC-LAN communication signal Turn ignition switch to ACC 2 to 3 V
    TX- (M4-14) - GND1 (M5-3) L - W-B AVC-LAN communication signal Turn ignition switch to ACC 2 to 3 V
    SGND (M4-17) - Body ground Shielded - Body ground Shielded ground Always Below 1 V
    MCO+ (M4-18) - GND1 (M5-3) BR - W-B Microphone voice signal See "microphone check" (see NAVIGATION CHECK MODE (MICROPHONE CHECK)  ) -
    MCO- (M4-19) - GND1 (M5-3) Y - W-B Microphone voice signal See "microphone check" (see NAVIGATION CHECK MODE (MICROPHONE CHECK)  ) -
    SLD (M4-20) - Body ground Shielded - Body ground Shielded ground Always Below 1 V
    IVO+ (M4-21) - GND1 (M5-3) R - W-B Telephone voice signal (bluetooth) See "microphone check" (see NAVIGATION CHECK MODE (MICROPHONE CHECK)  ) -
    IVO- (M4-22) - GND1 (M5-3) G - W-B Telephone voice signal (bluetooth) See "microphone check" (see NAVIGATION CHECK MODE (MICROPHONE CHECK)  ) -
    VR (M4-23) - GND1 (M5-3) Y - W-B Video return signal Turn ignition switch OFF Below 1 V
    R (M4-24) - GND1 (M5-3) G - W-B Display signal (red) Navigation display is on -
    G (M4-25) - GND1 (M5-3) W - W-B Display signal (green) Navigation display is on -
    B (M4-26) - GND1 (M5-3) R - W-B Display signal (blue) Navigation display is on -
    SYNC (M4-27) - GND1 (M5-3) B - W-B Display signal (synchronize) Navigation display is on -
    VG (M4-28) - Body ground Shielded - Body ground Shielded ground Always Below 1 V
    ILL+ (M5-1) - GND1 (M5-3) G - W-B Illumination signal Turn ignition switch OFF --> ON Below 1 V --> 10 to 14 V
    ILL- (M5-2) - Body ground W - Body ground Illumination signal Turn ignition switch OFF --> ON Below 1 V --> 10 to 14 V
    GND1 (M5-3) - Body ground W-B - Body ground Ground Always Below 1 V
    TX+ (M5-4) - GND1 (M5-3) Y - W-B AVC-LAN communication signal Turn ignition switch to ACC 2 to 3 V
    TX- (M5-5) - GND1 (M5-3) BR - W-B AVC-LAN communication signal Turn ignition switch to ACC 2 to 3 V
    TC (M5-7) - GND1 (M5-3) P - W-B Diagnosis ON signal Turn ignition switch to ON 9 to 14 V
    HAZ (M5-8) - GND1 (M5-3) V - W-B Hazard signal Turn hazard switch OFF --> ON Below 1 V --> 10 to 14 V or below 1 V
    PAON (M5-9) - GND1 (M5-3) SB - W-B Passenger airbag ON indicator Go to supplemental restraint system (see TERMINALS OF ECU ) -
    IG (M5-10) - GND1 (M5-3) LG - W-B Ignition (ON) Turn ignition switch OFF --> ON Below 1 V --> 10 to 14 V
    ACC (M5-11) - GND1 (M5-3) GR - W-B Accessory (ON) Turn ignition switch OFF --> ACC or ON Below 1 V --> 10 to 14 V
    +B (M5-12) - GND1 (M5-3) G - W-B Battery Always 10 to 14 V
    PKB (M5-16) - GND1 (M5-3) W - W-B Parking brake signal Turn parking brake switch ON --> OFF Below 1 V --> 10 to 14 V
    DR (M5-17) - GND1 (M5-3) SB - W-B Illumination (auto dimmer) signal Ignition switch ON, light control switch TAIL or ON and automatic light control sensor covered by hand Above 9 V
    TX3+ (M5-18) - GND1 (M5-3) R - W-B AVC-LAN communication signal Turn ignition switch to ON 2 to 3 V
    TX3- (M5-19) - GND1 (M5-3) B - W-B AVC-LAN communication signal Turn ignition switch to ON 2 to 3 V
    P-AB (M5-20) - GND1 (M5-3) BR - W-B Passenger airbag OFF indicator Go to supplemental restraint system (see TERMINALS OF ECU ) -
    PBEW (M5-21) -GND1 (M5-3) O - W-B Passenger (front) seat belt warning signal Turn ignition switch to ON, front passenger seat and front seat buckle switch ON (Belt unfastened) --> OFF (Belt fastened) 10 to 14 V --> Below 1 V
    SPD (M5-25) - GND1 (M5-3) SB - W-B Speed signal from combination meter See "Vehicle Signal Check Mode" (see DISPLAY CHECK MODE (VEHICLE SIGNAL CHECK)  ) -
    HSY (M7-1) - GND1 (M5-3) P - W-B Theft deterrent indicator signal Insert ignition key --> Remove from ignition key cylinder Below 1 V --> Pulse generation
    ILL- (M7-5) - Body ground W-Body ground Illumination signal Turn ignition switch OFF --> ON Below 1 V --> 10 to 14 V
  2. NAVIGATION ECU: 
    Fig 2: Identifying Navigation ECU TERMINALS
    G03009292Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NAVIGATION ECU TERMINALS VOLTAGE SPECIFICATION

    Symbols (Terminals No.) Wiring Color Terminal Description Condition Specification
    VR (N2-1) - GND1 (N3-17) Y - W-B Video return signal Turn ignition switch OFF Below 1 V
    R (N2-2) - GND1 (N3-17) G - W-B Display signal (red) Navigation display is on -
    B (N2-3) - GND1 (N3-17) R - W-B Display signal (blue) Navigation display is on -
    TX+ (N2-5) - GND1 (N3-17) R - W-B AVC-LAN communication signal Turn ignition switch to ACC 2 to 3 V
    VG (N2-6) - Body ground Shielded - Body ground Shielded ground Always Below 1 V
    G (N2-7) - GND1 (N3-17) W - W-B Display signal (green) Navigation display is on -
    SYNC (N2-8) - GND1 (N3-17) B - W-B Display signal (synchronize) Navigation display is on -
    TX- (N2-10) - GND1 (N3-17) Y - W-B AVC-LAN communication signal Turn ignition switch to ACC 2 to 3 V
    AUI+ (N3-1) - GND1 (N3-17) Y - W-B Sound signal (input) Audio system is playing -
    AUO+ (N3-2) - GND1 (N3-17) BR - W-B Sound signal (output) Audio system is playing -
    SPD (N3-5) - GND1 (N3-17) SB - W-B Speed signal from combination meter See "Vehicle Signal Check Mode" (see NAVIGATION CHECK MODE (VEHICLE SENSORS)  ) -
    +B (N3-9) - GND1 (N3-17) L - W-B Battery Always 10 to 14 V
    AUI- (N3-10) - GND1 (N3-17) LG - W-B Sound signal (input) Audio system is playing -
    AUO- (N3-11) -GND1 (N3-17) B - W-B Sound signal (output) Audio system is playing -
    VOI+ (N3-12) - GND1 (N3-17) R - W-B Telephone voice signal (bluetooth) See "microphone check" (see NAVIGATION CHECK MODE (MICROPHONE CHECK)  ) -
    VOI- (N3-13) - GND1 (N3-17) G - W-B Telephone voice signal (bluetooth) See "microphone check" (see NAVIGATION CHECK MODE (MICROPHONE CHECK)  ) -
    REV (N3-14) - GND1 (N3-17) R - W-B Reverse signal from combination meter See "Vehicle Signal Check Mode" (see NAVIGATION CHECK MODE (VEHICLE SENSORS)  ) -
    MUT2 (N3-15) -GND1 (N3-17) V - W-B Mute signal Audio system is playing --> Changing Above 3.5 V --> Below 1 V
    GND1 (N3-17) - Body ground W-B - Body ground Ground Always Below 1 V
    ACC (N3-18) - GND1 (N3-17) P - W-B Accessory (ON) Turn ignition switch OFF --> ACC or ON Below 1 V --> 10 to 14 V
    MIC+ (N6-3) - GND1 (N3-17) BR - W-B Microphone voice signal See "microphone check" (see NAVIGATION CHECK MODE (MICROPHONE CHECK)  ) -
    MIC- (N6-5) - GND1 (N3-17) Y - W-B Microphone voice signal See "microphone check" (see NAVIGATION CHECK MODE (MICROPHONE CHECK)  ) -
    SNSE (N6-7) - Body ground W-B - Body ground Microphone connection detection signal Always Below 1 V
  3. NETWORK GATEWAY ECU: 
    Fig 3: Identifying Network Gateway ECU Terminals
    G03009293Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NETWORK GATEWAY ECU TERMINALS VOLTAGE SPECIFICATION

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specification
    IG (G3-2) - GND (G3-14) Y - W-B Ignition (ON) Turn ignition switch OFF --> ON Below 1 V --> 10 to 14 V
    MPD1 (G3-4) L BEAN signal See "Diagnosis Check of Multiplex Communication System" (see TERMINALS OF ECU ) -
    GTX+ (G3-5) - GND (G3-14) R - W-B AVC-LAN communication signal Turn ignition switch to ACC 2 to 3 V
    CG (G3-7) - Body ground W-B - Body ground Ground Always Below 1 V
    BATT (G3-8) - GND (G3-14) O - W-B Battery Always 10 to 14 V
    ACC (G3-9) - GND (G3-14) V - W-B Accessory (ON) Turn ignition switch OFF --> ACC or ON Below 1 V --> 10 to 14 V
    MPD2 (G3-11) GR BEAN signal See "Diagnosis Check of Multiplex Communication System" (see TERMINALS OF ECU ) -
    GTX- (G3-12) - GND (G3-14) B - W-B AVC-LAN communication signal Turn ignition switch to ACC 2 to 3 V
    GND (G3-14) - Body ground W-B - Body ground Ground Always Below 1 V

    HINT:

    When trouble occurs in the network gateway ECU, the following symptoms are also confirmed simultaneously.

    • "Outside temperature" is not indicated on the multi-display.
    • "Vehicle information" is not indicated on the multi-display.
    • Unable to operate the air conditioner system.
  4. RADIO RECEIVER ASSY (SEE  TERMINALS OF ECU  ) 
  5. STEREO COMPONENT AMPLIFIER ASSY (SEE  TERMINALS OF ECU  ) 
  6. TELEVISION CAMERA ECU (SEE  TERMINALS OF ECU  ) 
  7. MULTI-DISPLAY CONTROLLER SUB-ASSY (SEE  TERMINALS OF ECU  ) 
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