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Terminals Of Ecu

  1. CHECK MULTI-DISPLAY 
    Fig 1: Identifying Terminals Of ECU
    G04065323Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TERMINAL SPECIFICATION CHART

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    GND1 (M5-3) - Body ground W-B - Body ground Ground Always Below 1 V
    TX1+ (M5-4) - GND1 (M5-3) P - W-B AVC-LAN communication signal Turn ignition switch ON 2 to 3 V
    TX1- (M5-5) - GND1 (M5-3) L-B - W-B AVC-LAN communication signal Turn ignition switch ON 2 to 3 V
    TC (M5-7) - GND1 (M5-3) P-B - W-B Diagnosis ON signal Turn ignition switch ON 9 to 14 V
    IG (M5-10) - GND1 (M5-3) B-W - W-B Ignition (ON) Turn ignition switch OFF Below 1 V
    IG (M5-10) - GND1 (M5-3) B-W - W-B Ignition (ON) Turn ignition switch ON 10 to 14 V
    ACC (M5-11) - GND1 (M5-3) GR - W-B Accessory (ON) Turn ignition switch OFF Below 1 V
    ACC (M5-11) - GND1 (M5-3) GR - W-B Accessory (ON) Turn ignition switch ACC or ON 10 to 14 V
    B1 (M5-12) - GND1 (M5-3) L-W - W-B Battery Always 10 to 14 V
    PKB (M5-16) - GND1 (M5-3) R-W - W-B Parking brake signal Turn parking brake switch ON Below 1 V
    PKB (M5-16) - GND1 (M5-3) V - W-B Parking brake signal Turn parking brake switch OFF 10 to 14 V
    SPD (M5-25) - GND1 (M5-3) V - W-B Speed signal from combination meter See "vehicle signal check mode"  
    SGND (M6-3) - GND1 (M5-3) W-B - W-B Screen noise or other types of noise occur Ignition switch OFF Below 1 V
    MIN+ (M6-4) - GND1 (M5-3) B - W-B Microphone voice signal See "microphone check" -
    MIN- (M6-5) - Body ground W - Body ground Microphone voice signal See "microphone check" -
    MACC (M6-6) - GND1 (M5-3) Y-G - W-B Microphone Accessory Turn ignition switch OFF Below 1 V
    MACC (M6-6) - GND1 (M5-3) Y-G - W-B Microphone Accessory Turn ignition switch ON 10 to 14 V
    TX3+ (M6-11) - GND1 (M5-3) P-L - W-B AVC-LAN communication signal Turn ignition switch ON 2 to 3 V
    TX3- (M6-12) - GND1 (M5-3) P-B - W-B AVC-LAN communication signal Turn ignition switch ON 2 to 3 V
    TX+ (M6-13) - GND1 (M5-3) P - W-B AVC-LAN communication signal Turn ignition switch ON 2 to 3 V
    TX- (M6-14) - GND1 (M5-3) L - W-B AVC-LAN communication signal Turn ignition switch ON 2 to 3 V
    SGND (M6-17) - GND1 (M5-3) Shielded - W-B Screen noise or other types of noise occur Ignition switch OFF Below 1 V
    MCO+ (M6-18) - GND1 (M5-3) B - W-B Microphone voice signal See "microphone check" -
    MCO- (M6-19) - GND1 (M5-3) W - W-B Microphone voice signal See "microphone check" -
    IVO+ (M6-21) - GND1 (M5-3) O - W-B Telephone voice signal (bluetooth) See "microphone check" -
    IVO- (M6-22) - GND1 (M5-3) W - W-B Telephone voice signal (bluetooth) See "microphone check" -
    VR - (M6-23) - GND1 (M5-3) B - W-B Video return signal Turn ignition switch OFF Below 1 V
    R - (M6-24) - GND1 (M5-3) Y - W-B Display signal (red) Navigation display is on Pulse generation *2
    G - (M6-25) - GND1 (M5-3) W - W-B Display signal (green) Navigation display is on Pulse generation *2
    B - (M6-26) - GND1 (M5-3) R - W-B Display signal (blue) Navigation display is on Pulse generation *2
    SYNC (M6-27) - GND1 (M5-3) G - W-B Display signal (synchronize) Navigation display is on Pulse generation *1
    VG (M6-28) - Body ground Shielded - Body ground Shielded ground Always Below 1 V
    NTSC (M7-1) - GND1 (M5-3) W - W-B DVD screen is in disorder Ignition switch ON and DVD displayed Pulse generation *3
    SGD1 (M7-4) - GND1 (M5-3) B - W-B Screen noise or other types of noise occur Ignition switch OFF Below 1 V
    SGND (M7-5) - GND1 (M5-3) Shielded - W-B Screen noise or other types of noise occur Ignition switch OFF Below 1 V
    1. *1: Oscilloscope wave

      Terminal to be measured: SYNC - GND1

      Setting for measurement: 500 mV/DIV., 10 - μsec./DIV.,

      Condition: Navigation map is displayed.

      Fig 2: Identifying Oscilloscope Wave Graph 1
      G04065324Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. *2: Oscilloscope wave

      Terminal to be measured: R, G, B - GND1

      Setting for measurement: 200 mV/DIV., 10 - μsec./DIV.,

      Condition: Navigation map is switched.

      Fig 3: Identifying Oscilloscope Wave Graph 2
      G04065325Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. *3: Oscilloscope wave

      Terminal to be measured: NTSC - SGD1

      Setting for measurement: 0.2 mV/DIV., 0.2 μsec./DIV.,

      Condition: Ignition switch ON and DVD displayed.

      Fig 4: Identifying Oscilloscope Wave Graph 3
      G04065326Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. CHECK NAVIGATION ECU 
    Fig 5: Identifying Navigation ECU Connector Terminals
    G04065327Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TERMINAL SPECIFICATION CHART

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    AUI+ (N2-1) - GND (N2-17) P - W-B Sound signal (input) Audio system is playing -
    AUO+ (N2-2) - GND (N2-17) P - W-B Sound signal (output) Audio system is playing -
    SLD1 (N2-3) - Body ground Shielded - Body ground Shielded ground Always Below 1.0 V
    SPD (N2-5) - GND1 (N2-17) V - W-B Speed signal from combination meter See "vehicle signal check mode" -
    +B (N2-9) - GND (N2-17) L-Y - W-B Battery Always 10 to 14 V
    AUI- (N2-10) - GND (N2-17) V - W-B Sound signal (input) Audio system is playing -
    AUO- (N2-10) - GND (N2-17) V - W-B Sound signal (output) Audio system is playing -
    VOI+ (N2-12) - Body ground O - Body ground Telephone voice signal (bluetooth) See "microphone check" -
    VOI- (N2-13) - Body ground W - Body ground Telephone voice signal (bluetooth) See "microphone check" -
    REV (N2-10) - GND (N2-17) R-B - W-B Reverse signal from combination meter See "vehicle signal check mode" -
    GND (N2-17) - Body ground W-B - Body ground Ground Always Below 1 V
    ACC (N2-18) - GND (N2-17) GR - W-B Accessory (ON) Turn ignition switch OFF Below 1 V
    ACC (N2-18) - GND (N2-17) GR - W-B Accessory (ON) Turn ignition switch ACC or ON 10 to 14 V
    VR - (N3-1) - GND (N2-17) B - W-B Video return signal Turn ignition switch OFF Below 1 V
    R - (N3-2) - GND (N2-17) Y - W-B Display signal (red) Navigation display is on Pulse generation *2
    B - (N3-3) - GND (N2-17) R - W-B Display signal (blue) Navigation display is on Pulse generation *2
    TX+ (N3-5) - GND (N2-17) P - W-B AVC-LAN communication signal Turn ignition switch to ACC 2 to 3 V
    VG (N3-6) - Body ground Shielded - Body ground Shielded ground Always Below 1 V
    G - (N3-7) - GND (N2-17) W - W-B Display signal (green) Navigation display is on Pulse generation *2
    SYNC (N3-8) - GND (N2-17) G - W-B Display signal (synchronize) Navigation display is on Pulse generation *1
    TX- (N3-10) - GND (N2-17) L-B - W-B AVC-LAN communication signal Turn ignition switch to ACC 2 to 3 V
    MIC+ (N8-3) - GND (N2-17) B - W-B Microphone voice signal See "microphone check" -
    MIC- (N8-5) - GND (N2-17) W - W-B Microphone voice signal See "microphone check" -
    SNSE (N8-7) - Body ground W-B - Body ground Ground Always Below 1 V
    1. *1: Oscilloscope wave

      Terminal to be measured: SYNC - GND1

      Setting for measurement: 500 mV/DIV., 10 μsec./DIV.,

      Condition: Navigation map is displayed.

      Fig 6: Identifying Oscilloscope Wave Graph 1
      G04065328Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. *2: Oscilloscope wave

    Terminal to be measured: R, G, B - GND1

    Setting for measurement: 200 mV/DIV., 10 - μsec./DIV.,

    Condition: Navigation map is switched.

  3. CHECK RADIO RECEIVER ASSEMBLY 
    Fig 7: Identifying Oscilloscope Wave Graph 2
    G04065329Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 8: Identifying Radio Receiver Assembly Connector Terminals
    G04065330Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TERMINAL SPECIFICATION CHART

    Symbols (Terminals No.) Condition Specified Condition Problem symptoms when short circuit is detected.
    B - GND (R37-1 - R37-20) Always 10 to 14 V Audio system does not operate.
    AMP - GND (R37-3 - R37-20) - - -
    MUTE - GND (R37-7 - R37-20) - - "Pop" sound, etc.
    Audio system does not operate.
    R+ - GND (R37-8 - R37-20) Always 10 to 14 V Sound from front right speaker is low.
    L+ - GND (R37-9 - R37-20) Always 10 to 14 V Sound from front left speaker is low.
    ACC - GND (R37-11 - R37-20) Ignition switch ACC 10 to 14 V Audio system does not operate.
    ANT+ - GND (R37-13 - R37-20) Radio switch ON 10 to 14 V Antenna does not extend.
    RR - GND (R37-18 - R37-20) Always 10 to 14 V Sound from rear right speaker is low.
    RL - GND (R37-19 - R37-20) Always 10 to 14 V Sound from rear left speaker is small.
    GND - Body ground (R37-20 - Body ground) Always Below 1 V Audio system is normal.
    CDR+ (R38-2) - - Sound from right side speaker is low.
    CDR- (R38-3) - - Sound from right side speaker is low.
    CDL+ (R38-4) - - Sound from left side speaker is low.
    CDL- (R38-5) - - Sound from left side speaker is low.
    MUTE - GND (R37-7 - R37-20) - - "Pop" sound, etc.
    Audio system does not operate.
    TX+ - GND (R38-9 - R37-20) AVC-LAN communication circuit - Audio system does not operate.
    TX- (R38-10) AVC-LAN communication circuit - Audio system does not operate.
    TX+ (R36-9) AVC-LAN communication circuit - Audio system does not operate.
    TX- (R36-10) AVC-LAN communication circuit - Audio system does not operate.
  4. CHECK STEREO COMPONENT AMPLIFIER 
    Fig 9: Identifying Stereo Component Amplifier Connector Terminals
    G04065331Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TERMINAL SPECIFICATION CHART

    Symbols (Terminals No.) Condition Specified Condition Problem symptoms when short circuit is detected.
    FR+ - E (S18-1 - S18-12) Radio switch ON 5 to 7 V RH side speaker does not sound.
    FL+ - E (S18-2 - S18-12) Radio switch ON 5 to 7 V LH side speaker does not sound.
    RR+ - E (S18-3 - S18-12) Radio switch ON 5 to 7 V Rear RH side speaker does not sound.
    RL+ - E (S18-4 - S18-12) Radio switch ON 5 to 7 V Rear LH side speaker does not sound.
    WFR+ - E (S18-5 - S18-12) Radio switch ON 5 to 7 V Rear RH side speaker does not sound.
    WFL+ - E (S18-6 - S18-12) Radio switch ON 5 to 7 V Rear LH side speakers do not sound.
    +B - E (S18-7 - S18-12) Always 10 to 14 V All speakers do not sound.
    FR- - E (S18-8 - S18-12) Radio switch ON 5 to 7 V RH side speaker does not sound.
    FL- - E (S18-9 - S18-12) Radio switch ON 5 to 7 V LH side speaker does not sound.
    RR- - E (S18-10 - S18-12) Radio switch ON 5 to 7 V Rear RH side speaker does not sound.
    RL- - E (S18-11 - S18-12) Radio switch ON 5 to 7 V Rear LH side speaker does not sound.
    E - Body ground (S18-12 - Body ground) Always Below 1 V -
    GND2 - Body ground (S18-13 - Body ground) Always Below 1 V -
    WFR- - E (S18-14 - S18-12) Radio switch ON 5 to 7 V Rear RH side speaker does not sound.
    WFL- - E (S18-15 - S18-12) Radio switch ON 5 to 7 V Rear LH side speaker does not sound.
    +B2 - GND2 (S18-16 - S18-13) Always 10 to 14 V All speakers do not sound.
    AMP (S19-1) - - -
    ACC - GND2 (S19-2 - S18-13) Ignition switch ACC 10 to 14 V Audio system does not operate.
    BEEP (S19-4) - - LH side speaker does not sound.
    FL - GND2 (S19-5 - S18-13) Always 10 to 14 V Sound from front LH speaker is low.
    FR - GND2 (S19-6 - S18-13) Always 10 to 14 V Sound from front RH speaker is low.
    SGND - GND2 (S19-11 - S18-13) - 5 to 7 V -
    MUTE - GND2 (S19-12 - S18-13) Radio switch ON 5 to 7 V Audio system does not operate.
    RL - GND2 (S19-13 - S18-13) Always 10 to 14 V Sound from rear LH speaker is low.
    RR - GND2 (S19-2 - S18-13) Always 10 to 14 V Sound from rear LH speaker is low.
  5. CHECK DISC PLAYER CHANGER 
    Fig 10: Identifying Disc Player Changer Connector Terminals
    G04065332Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TERMINAL SPECIFICATION CHART

    Symbols (Terminals No.) Condition Specified Condition Problem symptoms when short circuit is detected.
    ACC - GND (D32-1 - D32-20) Ignition switch ACC 10 to 14 V Disc player changer does not operate.
    TXM+ - GND (D32-3 - D32-20) AVC-LAN communication circuit - Audio system does not operate.
    CDR+ (D32-5) - - Sound from right side speaker is low.
    CDL+ (D32-6) - - Sound from left side speaker is low.
    NTSC (D32-9) - - -
    +B - GND (D32-10 - D32-20) Always 10 to 14 V Disc player changer does not operate.
    MUTE - GND (D32-11 - D32-20) DISC switch ON 5 to 7 V Audio system does not operate.
    TXM- - GND (D32-13 - D32-20) AVC-LAN communication circuit - Audio system does not operate.
    CDR- (D32-15) - - Sound from right side speaker is low.
    CDL- (D32-16) - - Sound from left side speaker is low.
  6. CHECK NETWORK GATEWAY ECU 
    Fig 11: Identifying Network Gateway ECU Connector Terminals
    G04065333Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TERMINAL SPECIFICATION CHART

    Symbols (Terminal No.) Wiring Color Condition Specified Condition
    IG - GND (G5-2 - G5-14) B-W - W-B Ignition switch ON 10 to 14 V
    MPD1 (G5-4) B Communication circuit (Gateway ECU and Center ECU) -
    GTX+ (G5-5) P - L AVC-LAN communication circuit -
    CG - Body ground (G5-7 - Body ground) BR - Body ground Always Below 1 V
    BATT - GND (G5-8 - G5-14) L-W - W-B Always 10 to 14 V
    MPD2 (G5-11) P - B Communication circuit (Gateway ECU and Center ECU) -
    GTX- (G5-12) P - B AVC-LAN communication circuit -
    GND - Body ground (G5-7 - Body ground) BR - Body ground Always Below 1 V
    1. *1: Oscilloscope wave

      Terminal to be measured: SYNC - GND1

      Setting for measurement: 500 mV/DIV., 10 μsec./DIV.,

      Condition: Navigation display is ON.

      Fig 12: Identifying Oscilloscope Wave Graph 1
      G04065334Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. *2: Oscilloscope wave

    Terminal to be measured: R, G, B - GND1

    Setting for measurement: 200 mV/DIV., 10 μsec./DIV.,

    Condition: Navigation map is switched ON.

    Fig 13: Identifying Oscilloscope Wave Graph 2
    G04065335Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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