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Terminals Of Ecu

  1. TELEVISION DISPLAY ASSEMBLY 
    Fig 1: ECU Connector Terminal Identification - Television Display Assembly
    GTY295425Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    U1-1 (NTSC) - U1-2 (SGN1) B - W Display signal (Output) RSE system is playing Pulse generation
    (Refer to Fig 2)
    U1-3 (SLD) - U1-27 (GND) Shield - BR Shield ground Always Below 1 V
    U1-4 (MUT1) - U1-27 (GND) L - BR Mute signal Disc player assembly is playing → Change modes 4 V or higher → Below 1 V
    U1-5 (R1+) - U1-27 (GND) B - BR Sound signal (Input) Disc player assembly is playing A waveform synchronized with sound signals is output
    U1-6 (R1-) - U1-27 (GND) W - BR Sound signal (Input) Disc player assembly is playing A waveform synchronized with sound signals is output
    U1-7 (TX1+) - U1-27 (GND) P - BR AVC-LAN communication signal Ignition switch ACC 2 to 3 V
    U1-8 (TX+) - U1-27 (GND) B - BR AVC-LAN communication signal Ignition switch ACC 2 to 3 V
    U1-9 (R+) - U1-27 (GND) B - BR Sound signal (Output) RSE system is playing A waveform synchronized with sound signals is output
    U1-10 (R-) - U1-27 (GND) W - BR Sound signal (Output) RSE system is playing A waveform synchronized with sound signals is output
    U1-11 (MUTE) - U1-27 (GND) R - BR Mute signal RSE system is playing → Change modes 4 V or higher → Below 1 V
    U1-12 (GND2) - Body ground BR - Body ground Ground Always Below 1 V
    U1-13 (ACC) - U1-27 (GND) GR - BR ACC power source Ignition switch ACC 11 to 14 V
    U1-14 (+B2) - U1-27 (GND) V - BR Battery power source Always 11 to 14 V
    U1-15 (VD) - U1-16 (SGN2) Y - BR Video signal (Input) Disc player assembly is playing Pulse generation
    (Refer to Fig 2)
    U1-16 (SGN2) - U1-27 (GND) BR - BR Ground Always Below 1 V
    U1-19 (L1+) - U1-27 (GND) R - BR Sound signal (Input) Disc player assembly is playing A waveform synchronized with sound signals is output
    U1-20 (L1-) - U1-27 (GND) G - BR Sound signal (Input) Disc player assembly is playing A waveform synchronized with sound signals is output
    U1-21 (TX1-) - U1-27 (GND) V - BR AVC-LAN communication signal Ignition switch ACC 2 to 3 V
    U1-22 (TX-) - U1-27 (GND) W - BR AVC-LAN communication signal Ignition switch ACC 2 to 3 V
    U1-23 (L+) - U1-27 (GND) R - BR Sound signal (Output) RSE system is playing A waveform synchronized with sound signals is output
    U1-24 (L-) - U1-27 (GND) G - BR Sound signal (Output) RSE system is playing A waveform synchronized with sound signals is output
    U1-25 (SLD9) - U1-27 (GND) Shield - BR Shield ground Always Below 1 V
    U1-27 (GND) - Body ground BR - Body ground Ground Always Below 1 V
    U1-28 (+B) - U1-27 (GND) V - BR Battery power source Always 11 to 14 V
    U2-1 (AGND) - U1-27 (GND) Shield - BR Shield ground Always Below 1 V
    U2-2 (VV+) - U2-10 (VV-) BR - Y Display signal (Input) VTR is displayed Pulse generation
    (Refer to Fig 3)
    U2-3 (VAR+) - U2-11 (VA-) B - W Sound signal (Input) External device playing (When video terminal used) A waveform synchronized with sound signals is output
    U2-4 (VAL+) - U2-11 (VA-) R - W Sound signal (Input) External device playing (When video terminal used) A waveform synchronized with sound signals is output
    U2-6 (HP2L) - U1-27 (GND) G - BR Sound signal (Output) RSE system is playing A waveform synchronized with sound signals is output
    U2-7 (SLD2) - U1-27 (GND) Shield - BR Shield ground Always Below 1 V
    U2-8 (HP2R) - U1-27 (GND) R - BR Sound signal (Output) RSE system is playing A waveform synchronized with sound signals is output
    U2-9 (KLK) - U1-27 (GND) Shield - BR Shield ground Always Below 1 V
    U2-12 (ADPG) - U1-27 (GND) LG - BR Ground Always Below 1 V
    U2-14 (HP1L) - U1-27 (GND) W - BR Sound signal (Output) RSE system is playing A waveform synchronized with sound signals is output
    U2-15 (SLD1) - U1-27 (GND) Shield - BR Shield ground Always Below 1 V
    U2-16 (HP1R) - U1-27 (GND) B - BR Sound signal (Output) RSE system is playing A waveform synchronized with sound signals is output
    1. Using an oscilloscope, check the waveform.
      Fig 2: Identifying Waveform 1
      GTY298222Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 1 (REFERENCE)

      Item Content
      Terminal No. (Symbols) U1-1 (NTSC) - U1-2 (SGN1)
      U1-15 (VD) - U1-16 (SGN2)
      Tool Setting 200 mV/DIV., 100 μsec./DIV.
      Condition Disc player assembly is playing
      TEXT IN ILLUSTRATION

      *a Video Waveform
      *b Synchronization Signal
    2. Using an oscilloscope, check the waveform.
      Fig 3: Identifying Waveform 2
      GTY298222Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 2 (REFERENCE)

      Item Content
      Terminal No. (Symbols) U2-2 (VV+) - U2-10 (VV-)
      Tool Setting 200 mV/DIV., 100 μsec./DIV.
      Condition External device playing (When VTR terminal used)
      TEXT IN ILLUSTRATION

      *a Video Waveform
      *b Synchronization Signal
  2. DISC PLAYER ASSEMBLY 
    Fig 4: ECU Connector Terminal Identification - Disc Player Assembly
    GTY303742Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    D70-1 (L-) - D70-13 (GND) G - BR Sound signal (Output) Disc player assembly is playing A waveform synchronized with sound signals is output
    D70-2 (L+) - D70-13 (GND) R - BR Sound signal (Output) Disc player assembly is playing A waveform synchronized with sound signals is output
    D70-3 (R-) - D70-13 (GND) W - BR Sound signal (Output) Disc player assembly is playing A waveform synchronized with sound signals is output
    D70-4 (R+) - D70-13 (GND) B - BR Sound signal (Output) Disc player assembly is playing A waveform synchronized with sound signals is output
    D70-5 (SLD1) - D70-13 (GND) Shield - BR Shield ground Always Below 1 V
    D70-6 (MUT2) - D70-13 (GND) L - BR Mute signal Disc player assembly is playing → Change modes 4 V or higher → Below 1 V
    D70-7 (ACC) - D70-13 (GND) GR - BR ACC power source Ignition switch ACC 11 to 14 V
    D70-8 (+B) - D70-13 (GND) V - BR Battery power source Always 11 to 14 V
    D70-9 (TX+) - D70-13 (GND) P - BR AVC-LAN communication signal Ignition switch ACC 2 to 3 V
    D70-10 (TX-) - D70-13 (GND) V - BR AVC-LAN communication signal Ignition switch ACC 2 to 3 V
    D70-13 (GND) - Body ground BR - Body ground Ground Always Below 1 V
    D70-14 (SLD2) - D70-13 (GND) Shield - BR Shield ground Always Below 1 V
    D70-15 (SGND) - Body ground BR - Body ground Ground Always Below 1 V
    D70-16 (NTSC) - D70-15 (SGND) Y - BR Video signal (Output) Disc player assembly is playing Pulse generation
    (Refer to Fig 5)
    1. Using an oscilloscope, check the waveform.
      Fig 5: Identifying Waveform 1
      GTY298222Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 1 (REFERENCE)

      Item Content
      Terminal No. (Symbols) D70-16 (NTSC) - D70-15 (SGND)
      Tool Setting 200 mV/DIV., 100 μsec./DIV.
      Condition Disc player assembly is playing
      TEXT IN ILLUSTRATION

      *a Video Waveform
      *b Synchronization Signal
  3. HEADPHONE TERMINAL 
    Fig 6: ECU Connector Terminal Identification - Headphone Terminal
    GTY299948Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TEXT IN ILLUSTRATION

    *a for RH Side *b for LH Side
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    S1-1 (HP2R) - Body ground R - Body ground Sound signal (Input) RSE system is playing A waveform synchronized with sound signals is output
    S1-2 (HP2L) - Body ground G - Body ground Sound signal (Input) RSE system is playing A waveform synchronized with sound signals is output
    S1-3 (SGN2) - Body ground Shield - Body ground Shield ground Always Below 1 V
    O1-1 (HP1R) - Body ground B - Body ground Sound signal (Input) RSE system is playing A waveform synchronized with sound signals is output
    O1-2 (HP1L) - Body ground W - Body ground Sound signal (Input) RSE system is playing A waveform synchronized with sound signals is output
    O1-3 (SGN1) - Body ground Shield - Body ground Shield ground Always Below 1 V
  4. VIDEO TERMINAL 
    Fig 7: ECU Connector Terminal Identification - Video Terminal
    GTY299331Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    P3-1 (VAR+) - Body ground B - Body ground Sound signal (Output) External device playing (When video terminal used) A waveform synchronized with sound signals is output
    P3-2 (VAL+) - Body ground R - Body ground Sound signal (Output) External device playing (When video terminal used) A waveform synchronized with sound signals is output
    P3-3 (VA-) - Body ground W - Body ground Ground Always Below 1 V
    P3-5 (VV+) - P3-6 (VV-) BR - Y Display signal VTR is displayed Pulse generation
    (Refer to Fig 8)
    P3-7 (SG) - Body ground Shield - Body ground Shield ground Always Below 1 V
    P3-8 (ADPG) - Body ground LG - Body ground Ground Always Below 1 V
    1. Using an oscilloscope, check the waveform.
      Fig 8: Identifying Waveform 2
      GTY298222Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 2 (REFERENCE)

      Item Content
      Terminal No. (Symbols) P3-5 (VV+) - P3-6 (VV-)
      Tool Setting 200 mV/DIV., 100 μsec./DIV.
      Condition External device playing (When VTR terminal used)
      TEXT IN ILLUSTRATION

      *a Video Waveform
      *b Synchronization Signal
  5. RADIO RECEIVER ASSEMBLY (w/o Navigation System) 
  6. NAVIGATION RECEIVER ASSEMBLY (w/ Navigation System for DVD) 
  7. NAVIGATION RECEIVER ASSEMBLY (w/ Navigation System for SD) 
  8. STEREO COMPONENT TUNER ASSEMBLY (w/ Navigation System) 
  9. MULTI-MEDIA INTERFACE ECU (w/o Navigation System) 
  10. MULTI-MEDIA INTERFACE ECU (w/ Navigation System for DVD) 
  11. STEREO COMPONENT AMPLIFIER ASSEMBLY (w/o Navigation System) 
  12. STEREO COMPONENT AMPLIFIER ASSEMBLY (w/ Navigation System for DVD) 
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