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Ecu Connector Terminal Identification

WARNING: This page is about a different car, the 2008 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
  1. MULTI-DISPLAY: 
    Fig 1: Identifying Terminals Of ECU
    G05006376Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

    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 → 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 Shielded - 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 Connectors
    G05006377Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    AUI+ (L16-1) - GND1 (L16-17) GR - W-B Sound signal (input) Audio system is playing -
    AUO+ (L16-2) - GND1 (L16-17) P-W - B Sound signal (output) Audio system is playing -
    SPD (L16-5) - GND1 (L16-17) BR - W-B Speed signal from combination meter See "NAVIGATION CHECK MODE " -
    +B (L16-9) - GND1 (L16-17) R - W-B Battery Always 10 to 14 V
    AUI- (L16-10) - GND1 (L16-17) Y - W-B Sound signal (input) Audio system is playing -
    AUO- (L16-11) - GND1 (L16-17) V - W-B Sound signal (output) Audio system is playing -
    REV (L16-14) - GND1 (L16-17) B - W-B Reverse signal from combination meter See "NAVIGATION CHECK MODE " -
    GND1 (L16-17) - Body ground W-B - Body ground Ground Always Below 1 V
    ACC (L16-18) - GND1 (L16-17) L-W-B Accessory (ON) Turn ignition switch off → on (ACC or IG) Below 1 V → 10 to 14 V
    VR (L17-1) - GND1 (L16-17) Y - W-B Video return signal Turn ignition switch off Below 1 V
    R (L17-2) - GND1 (L16-17) G - W-B Display signal (red) Navigation display is on -
    B (L17-3) - GND1 (L16-17) R - W-B Display signal (blue) Navigation display is on -
    TX1+ (L17-5) - GND1 (L16-17) GR - W-B AVC-LAN communication signal Turn ignition switch on (ACC) 2 to 3 V
    VG(L17-6)- Body ground Shielded - Body ground Shielded ground Always Below 1 V
    G (L17-7) - GND1 (L16-17) W - W-B Display signal (green) Navigation display is on -
    SYNC (L17-8) - GND1 (L16-17) B - W-B Display signal (synchronize) Navigation display is on -
    TX1- (L17-10) - GND1 (L16-17) LG - W-B AVC-LAN communication signal Turn ignition switch on (ACC) 2 to 3 V
    MIC+ (L18-3) - GND1 (L16-17) R - W-B Microphone voice signal Steering pad switch RH (VOICE) is pushed -
    MACC (L18-4) - GND1 (L16-17) W - W-B Microphone AMP power supply Turn ignition switch off → on (IG) Below 1 V → 5 V
    MIC- (L18-5) - GND1 (L16-17) G - W-B Microphone voice signal Always Below 1 V
    SGND (L18-6) - GND1 (L16-17) G - W-B Microphone voice signal Always Below 1 V
    SNSE (L18-7) - Body ground W-B - Body ground Microphone connection detection signal Always Below 1 V
  3. CLOCK ASSEMBLY: 
    Fig 3: Identifying Clock Assembly Connector
    G05006378Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

    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
    G05006379Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

    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 TERMINALS OF ECU )
  6. STEREO COMPONENT AMPLIFIER  (See TERMINALS OF ECU )
  7. GATEWAY ECU  (See TERMINALS OF ECU )
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