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Terminals Of Ecu

  1. MULTI-DISPLAY: 
    Fig 1: Identifying Terminals Of ECU (Multi-Display)
    G04380193Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    ECU TERMINALS VOLTAGE SPECIFICATION

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    GND4 (E8-1) - Body ground W-B - Body ground Ground Always Below 1 V
    PKB (E8-2) - GND1 (E25-6) R - W-B Parking Brake signal Turn parking Brake switch ON --> OFF Below 1 V --> 10 to 14 V
    VR (E8-3) - GND1 (E25-6) Y - W-B Video return signal Turn ignition switch off Below 1 V
    R (E8-4) - GND1 (E25-6) G - W-B Display signal (red) Navigation display is on -
    B (E8-5) - GND1 (E25-6) R - W-B Display signal (blue) Navigation display is on -
    TX+ (E8-6) - GND1 (E25-6) Y - W-B AVC-LAN communication signal Turn ignition switch on (ACC) 2 to 3 V
    TX1+ (E8-7) - GND1 (E25-6) V - W-B AVC-LAN communication signal Turn ignition switch on (ACC) 2 to 3 V
    RE1 (E8-8) - GND1 (E25-6) B - W-B Navigation controller communication signal Navigation controller switch is ON -
    TX2+ (E8-9) - GND1 (E25-6) BR - W-B AVC-LAN communication signal Turn ignition switch on (ACC) 2 to 3 V
    TX4+ (E8-10) - GND1 (E25-6) GR - W-B AVC-LAN communication signal Turn ignition switch on (ACC) 2 to 3 V
    GND2 (E8-11) - Body ground W-B - Body ground Ground Always Below 1 V
    SGD1 (E8-12) - Body ground W-B - Body ground Ground Always Below 1 V
    SGND (E8-13) - Body ground W-B - Body ground Ground Always Below 1 V
    TC (E8-14) - GND1 (E25-6) Y - W-B Diagnosis ON signal Turn ignition switch on (IG) 9 to 14 V
    VG (E8-15) - Body ground W-B - Body ground Shielded ground Always Below 1 V
    G (E8-16) - GND1 (E25-6) W - W-B Display signal (green) Navigation display is on -
    SYNC (E8-17) - GND1 (E25-6) B - W-B Display signal (synchronize) Navigation display is on -
    TX- (E8-18) - GND1 (E25-6) B - W-B AVC-LAN communication signal Turn ignition switch on (ACC) 2 to 3 V
    TX1- (E8-19) - GND1 (E25-6) LG - W-B AVC-LAN communication signal Turn ignition switch on (ACC) 2 to 3 V
    SG (E8-20) - Body ground Shielded - Body ground Shielded ground Always Below 1 V
    TX2- (E8-21) - GND1 (E25-6) R - W-B AVC-LAN communication signal Turn ignition switch on (ACC) 2 to 3 V
    TX4- (E8-22) - GND1 (E25-6) B - W-B AVC-LAN communication signal Turn ignition switch on (ACC) 2 to 3 V
    GND3 (E8-23) - Body ground W-B - Body ground Ground Always Below 1 V
    SGD2 (E8-24) - Body ground W-B - Body ground Ground Always Below 1 V
    +B1 (E25-1) - GND1 (E25-6) R - W-B Battery Always 10 to 14 V
    IG (E25-2) - GND1 (E25-6) B - W-B Ignition (ON) Turn ignition switch OFF --> ON (IG) Below 1 V --> 10 to 14 V
    ACC (E25-4) - GND1 (E25-6) GR - W-B Accessory (ON) Turn ignition switch OFF --> ON (ACC or IG) Below 1 V --> 10 to 14 V
    SPD (E25-5) - GND1 (E25-6) L - W-B Speed signal from combination meter See DISPLAY CHECK MODE ) -
    GND1 (E25-6) - Body ground W-B - Body ground Ground Always Below 1 V
    GND5 (E25-7) - Body ground W-B - Body ground Ground Always Below 1 V
    ILL+ (E25-8) - GND1 (E25-6) G - W-B Illumination signal Light control switch OFF --> TAIL or ON Below 1 V --> 10 to 14 V
  2. NAVIGATION ECU: 
    Fig 2: Identifying Navigation ECU Terminals
    G04380194Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NAVIGATION ECU TERMINALS VOLTAGE SPECIFICATION

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    AUI+ (M16-1) - GND1 (M16-17) GR - W-B Sound signal (input) Audio system is playing -
    AUO+ (M16-2) - GND1 (M16-17) P - W-B Sound signal (output) Audio system is playing -
    SPD (M16-5) - GND1 (M16-17) BR - W-B Speed signal from combination meter See NAVIGATION CHECK MODE  -
    +B (M16-9) - GND1 (M16-17) R - W-B Battery Always 10 to 14 V
    AUI- (M16-10) - GND1 (M16-17) Y - W-B Sound signal (input) Audio system is playing -
    AUO- (M16-11) - GND1 (M16-17) V - W-B Sound signal (output) Audio system is playing -
    REV (M16-14) - GND1 (M16-17) B - W-B Reverse signal from combination meter See NAVIGATION CHECK MODE  -
    GND1 (M16-17) - Body ground W-B - Body ground Ground Always Below 1 V
    ACC (M16-18) - GND1 (M16-17) L - W-B Accessory (ON) Turn ignition switch OFF --> ON (ACC or IG) Below 1 V --> 10 to 14 V
    VR (M17-1) - GND1 (M16-17) Y - W-B Video return signal Turn ignition switch off Below 1 V
    R (M17-2) - GND1 (M16-17) G - W-B Display signal (red) Navigation display is on -
    B (M17-3) - GND1 (M16-17) R - W-B Display signal (blue) Navigation display is on -
    TX1+ (M17-5) - GND1 (M16-17) GR - W-B AVC-LAN communication signal Turn ignition switch on (ACC) 2 to 3 V
    VG (M17-6) - Body ground Shielded - Body ground Shielded ground Always Below 1 V
    G (M17-7) - GND1 (M16-17) W - W-B Display signal (green) Navigation display is on -
    SYNC (M17-8) - GND1 (M16-17) B - W-B Display signal (synchronize) Navigation display is on -
    TX1- (M17-10) - GND1 (M16-17) LG - W-B AVC-LAN communication signal Turn ignition switch on (ACC) 2 to 3 V
    MIC+ (M18-3) - GND1 (M16-17) R - W-B Microphone voice signal Steering pad switch RH (VOICE) is pushed -
    MACC (M18-4) - GND1 (M16-3) W - W-B Microphone AMP power supply Turn ignition switch OFF --> ON (IG) Below 1 V --> 5 V
    MIC- (M18-5) - GND1 (M16-17) G - W-B Microphone voice signal Always Below 1 V
    SGND (M18-6) - GND1 (M16-17) G - W-B Microphone voice signal Always Below 1 V
    SNSE (M18-7) - Body ground W-B - Body ground Microphone connection detection signal Always Below 1 V
  3. CLOCK ASSEMBLY: 
    Fig 3: Identifying Clock Assembly ECU Terminals
    G04380195Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    CLOCK TERMINALS VOLTAGE SPECIFICATION

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    TX-1 (E5-5) - E (E5-7) LG - W-B AVC-LAN communication signal Turn ignition switch on (ACC) 2 to 3 V
    TX+1 (E5-6) - E (E5-7) V - W-B AVC-LAN communication signal Turn ignition switch on (ACC) 2 to 3 V
    E (E5-7) - Body ground W-B - Body ground Ground Always Below 1 V
    B (E5-8) - E (E5-7) W - W-B Battery Always 10 to 14 V
    ACC (E5-4) - E (E5-7) B - W-B Accessory (ON) Turn ignition switch OFF --> ON (ACC or IG) Below 1 V --> 10 to 14 V
  4. NAVIGATION CONTROLLER ASSEMBLY: 
    Fig 4: Identifying Navigation Controller Assembly Connector Terminals
    G04380196Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NAVIGATION CONTROLLER ASSEMBLY CONNECTOR TERMINALS VOLTAGE SPECIFICATIONS

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    +B (E18-1) - GND (E18-8) Y - W-B Battery Always 10 to 14 V
    RE (E18-2) - GND (E18-8) B - W-B Navigation controller communication signal Navigation controller switch is pushed -
    ACC (E18-4) - GND (E18-8) GR - W-B Accessory (ON) Turn ignition switch OFF --> ON (ACC or IG) Below 1 V --> 10 to 14 V
    SGND (E18-6) - Body ground Shielded - Body ground Shielded ground Always Below 1 V
    GND (E18-8) - Body ground W-B - Body ground Ground Always Below 1 V
  5. RADIO RECEIVER (See  PROBLEM SYMPTOMS TABLE  ) 
  6. STEREO COMPONENT AMPLIFIER (See  PROBLEM SYMPTOMS TABLE  ) 
  7. GATEWAY ECU (See  PROBLEM SYMPTOMS TABLE  ) 
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