AUDIO AND VISUAL SYSTEM(w/o Parking Assist Monitor System) TERMINALS OF ECU

Tech Tips

Check from the rear of the connector while it is connected to the components.


  1. RADIO RECEIVER ASSEMBLY (for 8 Speakers)

    A0021H3N07
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specification
    K135-3 (CNH1) V Local bus communication signal - -
    K135-4 (CNL1) P Local bus communication signal - -
    K135-11 (CA+) - K70-7 (GND1) B - W-B Television camera power supply Power switch on (ACC) 5.5 to 7.05 V
    K135-12 (V+) - K70-7 (GND1) R - W-B Video signal

    Power switch on (IG)

    Shift lever in R

    Camera lens not covered, displaying an image

    Pulse generation

    (Refer to waveform 1)

    Power switch on (IG)

    Shift lever in R

    Camera lens covered, blacking out screen

    Pulse generation

    (Refer to waveform 2)
    K135-18 (TX2+) B AVC-LAN communication signal - -
    K135-19 (TX2-) W AVC-LAN communication signal - -
    K135-23 (CGND) - Body ground Shield - Body ground Shield ground Always Below 1 V
    K135-24 (V-) - K70-7 (GND1) W - W-B Ground Always Below 1 V
    K72-1 (IG) - K70-7 (GND1) P - W-B Power source (IG) Power switch off Below 1 V
    Power switch on (IG) 11 to 14 V
    K72-3 (ADIM) - K70-7 (GND1) LG - W-B Illumination (auto dimmer) signal

    Power switch on (IG)

    Automatic light control sensor covered by hand, and light control switch in tail or head position

    		 9 V or higher

    Power switch on (IG)

    Automatic light control sensor not covered by hand, and light control switch in tail or head position

    		 Below 1 V
    K72-4 (MACC) - K70-7 (GND1) R - W-B Microphone power supply Power switch off Below 1 V
    Power switch on (ACC) 4 to 6 V
    K72-5 (MIN+) - K70-7 (GND1) W - W-B Microphone voice signal

    See "Check Microphone" in Operation Check

    Click here

    		-
    K72-6 (SNS2) - K70-7 (GND1) L - W-B Microphone connection detection signal Always Below 1 V
    K72-7 (TX1+) L AVC-LAN communication signal - -
    K72-8 (TX1-) G AVC-LAN communication signal - -
    K72-9 (CANH) R CAN communication signal - -
    K72-10 (CANL) B CAN communication signal - -
    K72-11 (AGND) - Body ground Shield - Body ground Shield ground Always Below 1 V
    K72-12 (SG) - K70-7 (GND1) Shield - W-B External device connection detection signal External device connected Below 1 V
    K72-13 (VV+) - K70-7 (GND1) P - W-B Video signal

    External device playing

    (When stereo jack used)

    		 A waveform synchronized with video signals is output
    K72-14 (VV-) - K70-7 (GND1) L - W-B Video signal ground Always Below 1 V
    K72-15 (PKB) - K70-7 (GND1) GR - W-B Parking brake signal

    See "Check Vehicle Signal" in Operation Check

    Click here

    		-
    K72-16 (MUT1) - K70-7 (GND1) LG - W-B Mute signal

    Power switch on (ACC)

    Audio system playing

    		 2.0 V or higher
    Audio system changing modes Below 1 V
    K72-17 (SPD) - K70-7 (GND1) L - W-B Vehicle speed signal

    See "Check Vehicle Signal" in Operation Check

    Click here

    		-
    K72-18 (SGND) - Body ground Shield - Body ground Shield ground Always Below 1 V
    K72-19 (MIN-) - K70-7 (GND1) B - W-B Microphone voice signal

    See "Check Microphone" in Operation Check

    Click here

    		-
    K72-21 (SW1) - K72-23 (SWG) L - BR Steering pad switch signal No switch pushed 2.97 to 3.56 V
    Seek+ switch pushed 0.27 to 0.35 V
    Seek- switch pushed 0.86 to 1.03 V
    Volume+ switch pushed 1.51 to 1.79 V
    Volume- switch pushed 2.22 to 2.66 V
    K72-22 (SW2) - K72-23 (SWG) P - BR Steering pad switch signal No switch pushed 2.97 to 3.56 V
    MODE switch pushed 0.27 to 0.35 V
    On hook switch pushed 0.86 to 1.03 V
    Off hook switch pushed 1.51 to 1.79 V
    Voice switch pushed 2.22 to 2.66 V
    K72-23 (SWG) - K70-7 (GND1) BR - W-B Steering pad switch ground Always Below 1 V
    K72-25 (ADPG) - K70-7 (GND1) P - W-B External device connection detection signal External device connected Below 1 V
    External device not connected 2.1 to 3 V
    K72-26 (VAR+) - K72-27 (VA-) W - R Sound signal (Right)

    External device playing

    (When stereo jack used)

    		 A waveform synchronized with sound signals is output
    K72-27 (VA-) - K70-7 (GND1) R - W-B Ground Always Below 1 V
    K72-28 (VAL+) - K72-27 (VA-) B - R Sound signal (Left)

    External device playing

    (When stereo jack used)

    		 A waveform synchronized with sound signals is output
    K74-1 (VMTF) - K70-7 (GND1) W - W-B Visual mute signal

    Power switch on (ACC)

    Screen display changes

    2 V or higher

    → Below 1 V

    → 2 V or higher
    K74-11 (TX4+) G AVC-LAN communication signal - -
    K74-12 (TX4-) V AVC-LAN communication signal - -
    K70-1 (FR+) - K70-7 (GND1) W - W-B Sound signal (Right) Audio system playing A waveform synchronized with sound signals is output
    K70-2 (FL+) - K70-7 (GND1) B - W-B Sound signal (Left) Audio system playing A waveform synchronized with sound signals is output
    K70-3 (ACC1) - K70-7 (GND1) BE - W-B Power source (ACC) Power switch off Below 1 V
    Power switch on (ACC) 11 to 14 V
    K70-4 (+B1) - K70-7 (GND1) V - W-B Power source (+B) Power switch off 11 to 14 V
    K70-5 (FR-) - K70-7 (GND1) G - W-B Sound signal (Right) Audio system playing A waveform synchronized with sound signals is output
    K70-6 (FL-) - K70-7 (GND1) R - W-B Sound signal (Left) Audio system playing A waveform synchronized with sound signals is output
    K70-7 (GND1) - Body ground W-B - Body ground Ground Always Below 1 V
    K70-10 (ILL+) - K70-7 (GND1) G - W-B Illumination signal Light control switch off Below 1 V

    Power switch off

    Light control switch in tail or head position

    		 11 to 14 V
    K71-2 (RL+) - K70-7 (GND1) W - W-B Voice signal Voice guidance sounding A waveform synchronized with voice signals is output
    K71-5 (ILL-) - K70-7 (GND1) BE - W-B Illumination signal Light control switch off Below 1 V
    Light control switch in tail or head position Pulse generation
    K71-6 (RL-) - K70-7 (GND1) B - W-B Voice signal Voice guidance sounding A waveform synchronized with voice signals is output
    K75-3 (ACC2) - K70-7 (GND1) BE - W-B Illumination power source (ACC) Power switch off Below 1 V
    Power switch on (ACC) 11 to 14 V
    K75-4 (+B2) - K70-7 (GND1) G - W-B Illumination power source (+B) Power switch off 11 to 14 V
    K75-8 (GND2) - Body ground SB - Body ground Ground Always Below 1 V
    K118-1 (USV1) - Power source - -
    K118-2 (US1-) - Data signal - -
    K118-3 (US1+) - Data signal - -
    K118-4 (UGD1) - Ground - -
    K118-5 (USG1) - Shield ground - -
    K121-1 (GVIF) B Video signal (Digital) - -
    RA-5 (ANT+) - K70-7 (GND1) - - W-B Power source of antenna

    Power switch on (ACC)

    Radio switch on and FM or AM selected

    		 11 to 14 V

    1. Reference (Oscilloscope waveform):


      1. A00227VC06
        *a Waveform 1 (camera lens not covered, displaying an image)
        *b Synchronization Signal
        *c Video Waveform

        Waveform 1 (camera lens not covered, displaying an image)

        Item Content
        Measurement terminal K135-12 (V+) - K70-7 (GND1)
        Measurement setting 200 mV/DIV., 50 μsec./DIV.
        Condition Power switch on (IG), shift lever in R

        Tech Tips

        The video waveform changes according to the image sent by the television camera assembly.

      2. A0022F2C04
        *a Waveform 2 (camera lens covered, blacking out the screen)
        *b Synchronization Signal
        *c Video Waveform

        Waveform 2 (camera lens covered, blacking out the screen)

        Item Content
        Measurement terminal K135-12 (V+) - K70-7 (GND1)
        Measurement setting 200 mV/DIV., 50 μsec./DIV.
        Condition Power switch on (IG), shift lever in R

        Tech Tips

        The video waveform changes according to the image sent by the rear television camera assembly.

  2. RADIO RECEIVER ASSEMBLY (for 6 Speakers)

    A0021H3N04
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specification
    K135-3 (CNH1) V Local bus communication signal - -
    K135-4 (CNL1) P Local bus communication signal - -
    K135-11 (CA+) - K70-7 (GND1) B - W-B Television camera power supply Power switch on (ACC) 5.5 to 7.05 V
    K135-12 (V+) - K70-7 (GND1) R - W-B Video signal

    Power switch on (IG)

    Shift lever in R

    Camera lens not covered, displaying an image

    Pulse generation

    (Refer to waveform 1)

    Power switch on (IG)

    Shift lever in R

    Camera lens covered, blacking out screen

    Pulse generation

    (Refer to waveform 2)
    K135-18 (TX2+) B AVC-LAN communication signal - -
    K135-19 (TX2-) W AVC-LAN communication signal - -
    K135-23 (CGND) - Body ground Shield - Body ground Shield ground Always Below 1 V
    K135-24 (V-) - K70-7 (GND1) W - W-B Ground Always Below 1 V
    K72-1 (IG) - K70-7 (GND1) P - W-B Power source (IG) Power switch off Below 1 V
    Power switch on (IG) 11 to 14 V
    K72-3 (ADIM) - K70-7 (GND1) LG - W-B Illumination (auto dimmer) signal

    Power switch on (IG)

    Automatic light control sensor covered by hand, and light control switch in tail or head position

    		 9 V or higher

    Power switch on (IG)

    Automatic light control sensor not covered by hand, and light control switch in tail or head position

    		 Below 1 V
    K72-4 (MACC) - K70-7 (GND1) R - W-B Microphone power supply Power switch off Below 1 V
    Power switch on (ACC) 4 to 6 V
    K72-5 (MIN+) - K70-7 (GND1) W - W-B Microphone voice signal

    See "Check Microphone" in Operation Check

    Click here

    		-
    K72-6 (SNS2) - K70-7 (GND1) L - W-B Microphone connection detection signal Always Below 1 V
    K72-9 (CANH) R CAN communication signal - -
    K72-10 (CANL) B CAN communication signal - -
    K72-11 (AGND) - Body ground Shield - Body ground Shield ground Always Below 1 V
    K72-12 (SG) - K70-7 (GND1) Shield - W-B External device connection detection signal External device connected Below 1 V
    K72-13 (VV+) - K70-7 (GND1) P - W-B Video signal

    External device playing

    (When stereo jack used)

    		 A waveform synchronized with video signals is output
    K72-14 (VV-) - K70-7 (GND1) L - W-B Video signal ground Always Below 1 V
    K72-15 (PKB) - K70-7 (GND1) GR - W-B Parking brake signal

    See "Check Vehicle Signal" in Operation Check

    Click here

    		-
    K72-17 (SPD) - K70-7 (GND1) L - W-B Vehicle speed signal

    See "Check Vehicle Signal" in Operation Check

    Click here

    		-
    K72-18 (SGND) - Body ground Shield - Body ground Shield ground Always Below 1 V
    K72-19 (MIN-) - K70-7 (GND1) B - W-B Microphone voice signal

    See "Check Microphone" in Operation Check

    Click here

    		-
    K72-21 (SW1) - K72-23 (SWG) L - BR Steering pad switch signal No switch pushed 2.97 to 3.56 V
    Seek+ switch pushed 0.27 to 0.35 V
    Seek- switch pushed 0.86 to 1.03 V
    Volume+ switch pushed 1.51 to 1.79 V
    Volume- switch pushed 2.22 to 2.66 V
    K72-22 (SW2) - K72-23 (SWG) P - BR Steering pad switch signal No switch pushed 2.97 to 3.56 V
    MODE switch pushed 0.27 to 0.35 V
    On hook switch pushed 0.86 to 1.03 V
    Off hook switch pushed 1.51 to 1.79 V
    Voice switch pushed 2.22 to 2.66 V
    K72-23 (SWG) - K70-7 (GND1) BR - W-B Steering pad switch ground Always Below 1 V
    K72-25 (ADPG) - K70-7 (GND1) P - W-B External device connection detection signal External device connected Below 1 V
    External device not connected 2.1 to 3 V
    K72-26 (VAR+) - K72-27 (VA-) W - R Sound signal (Right)

    External device playing

    (When stereo jack used)

    		 A waveform synchronized with sound signals is output
    K72-27 (VA-) - K70-7 (GND1) R - W-B Ground Always Below 1 V
    K72-28 (VAL+) - K72-27 (VA-) B - R Sound signal (Left)

    External device playing

    (When stereo jack used)

    		 A waveform synchronized with sound signals is output
    K74-1 (VMTF) - K70-7 (GND1) W - W-B Visual mute signal

    Power switch on (ACC)

    Screen display changes

    2 V or higher

    → Below 1 V

    → 2 V or higher
    K74-11 (TX4+) G AVC-LAN communication signal - -
    K74-12 (TX4-) V AVC-LAN communication signal - -
    K70-1 (FR+) - K70-7 (GND1) BE - W-B Sound signal (Front Right) Audio system playing A waveform synchronized with sound signals is output
    K70-2 (FL+) - K70-7 (GND1) W - W-B Sound signal (Front Left) Audio system playing A waveform synchronized with sound signals is output
    K70-3 (ACC1) - K70-7 (GND1) BE - W-B Power source (ACC) Power switch off Below 1 V
    Power switch on (ACC) 11 to 14 V
    K70-4 (+B1) - K70-7 (GND1) SB - W-B Power source (+B) Power switch off 11 to 14 V
    K70-5 (FR-) - K70-7 (GND1) P - W-B Sound signal (Front Right) Audio system playing A waveform synchronized with sound signals is output
    K70-6 (FL-) - K70-7 (GND1) LG - W-B Sound signal (Front Left) Audio system playing A waveform synchronized with sound signals is output
    K70-7 (GND1) - Body ground W-B - Body ground Ground Always Below 1 V
    K70-10 (ILL+) - K70-7 (GND1) G - W-B Illumination signal Light control switch off Below 1 V

    Power switch off

    Light control switch in tail or head position

    		 11 to 14 V
    K71-1 (RR+) - K70-7 (GND1) LG - W-B Sound signal (Rear Right) Audio system playing A waveform synchronized with sound signals is output
    K71-2 (RL+) - K70-7 (GND1) BE - W-B Sound signal (Rear Left) Audio system playing A waveform synchronized with sound signals is output
    K71-3 (RR-) - K70-7 (GND1) W - W-B Sound signal (Rear Right) Audio system playing A waveform synchronized with sound signals is output
    K71-5 (ILL-) - K70-7 (GND1) BE - W-B Illumination signal Light control switch off Below 1 V
    Light control switch in tail or head position Pulse generation
    K71-6 (RL-) - K70-7 (GND1) P - W-B Sound signal (Rear Left) Audio system playing A waveform synchronized with sound signals is output
    K75-3 (ACC2) - K70-7 (GND1) BE - W-B Illumination power source (ACC) Power switch off Below 1 V
    Power switch on (ACC) 11 to 14 V
    K75-4 (+B2) - K70-7 (GND1) G - W-B Illumination power source (+B) Power switch off 11 to 14 V
    K75-8 (GND2) - Body ground SB- Body ground Ground Always Below 1 V
    K118-1 (USV1) - Power source - -
    K118-2 (US1-) - Data signal - -
    K118-3 (US1+) - Data signal - -
    K118-4 (UGD1) - Ground - -
    K118-5 (USG1) - Shield ground - -
    K121-1 (GVIF) B Video signal (Digital) - -
    RA-5 (ANT+) - K70-7 (GND1) - - W-B Power source of antenna

    Power switch on (ACC)

    Radio switch on and FM or AM selected

    		 11 to 14 V

    1. Reference (Oscilloscope waveform):


      1. A00227VC06
        *a Waveform 1 (camera lens not covered, displaying an image)
        *b Synchronization Signal
        *c Video Waveform

        Waveform 1 (camera lens not covered, displaying an image)

        Item Content
        Measurement terminal K135-12 (V+) - K70-7 (GND1)
        Measurement setting 200 mV/DIV., 50 μsec./DIV.
        Condition Power switch on (IG), shift lever in R

        Tech Tips

        The video waveform changes according to the image sent by the television camera assembly.

      2. A0022F2C04
        *a Waveform 2 (camera lens covered, blacking out the screen)
        *b Synchronization Signal
        *c Video Waveform

        Waveform 2 (camera lens covered, blacking out the screen)

        Item Content
        Measurement terminal K135-12 (V+) - K70-7 (GND1)
        Measurement setting 200 mV/DIV., 50 μsec./DIV.
        Condition Power switch on (IG), shift lever in R

        Tech Tips

        The video waveform changes according to the image sent by the rear television camera assembly.

  3. STEREO COMPONENT AMPLIFIER ASSEMBLY (for 8 Speakers)

    A00226YN12
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specification
    P23-1 (+B) - P23-3 (GND) SB - BR Power source (+B) Power switch off 11 to 14 V
    P23-3 (GND) - Body ground BR - Body ground Ground Always Below 1 V
    P23-4 (WFL+) - P23-3 (GND) R - BR Sound signal (Front Left) Audio system playing A waveform synchronized with sound signals is output
    P23-5 (WFR+) - P23-3 (GND) L - BR Sound signal (Front Right) Audio system playing A waveform synchronized with sound signals is output
    P23-6 (WF1+) - P23-3 (GND) GR - BR Sound signal (Woofer) Audio system playing A waveform synchronized with sound signals is output
    P23-7 (CTR+) - P23-3 (GND) GR - BR Sound signal (Front Center) Audio system playing A waveform synchronized with sound signals is output
    P23-12 (FL+) - P23-3 (GND) W - BR Sound signal (Front Left) Audio system playing A waveform synchronized with sound signals is output
    P23-13 (FR+) - P23-3 (GND) BE - BR Sound signal (Front Right) Audio system playing A waveform synchronized with sound signals is output
    P23-14 (RL+) - P23-3 (GND) BE - BR Sound signal (Rear Left) Audio system playing A waveform synchronized with sound signals is output
    P23-15 (RR+) - P23-3 (GND) LG - BR Sound signal (Rear Right) Audio system playing A waveform synchronized with sound signals is output
    P23-16 (+B2) - P23-3 (GND) BE - BR Power source (+B) Power switch off 11 to 14 V
    P23-18 (GND2) - Body ground BR - Body ground Ground Always Below 1 V
    P23-19 (WFL-) - P23-3 (GND) B - BR Sound signal (Front Left) Audio system playing A waveform synchronized with sound signals is output
    P23-20 (WFR-) - P23-3 (GND) B - BR Sound signal (Front Right) Audio system playing A waveform synchronized with sound signals is output
    P23-21 (WF1-) - P23-3 (GND) L - BR Sound signal (Woofer) Audio system playing A waveform synchronized with sound signals is output
    P23-22 (CTR-) - P23-3 (GND) V - BR Sound signal (Front Center) Audio system playing A waveform synchronized with sound signals is output
    P23-27 (FL-) - P23-3 (GND) P - BR Sound signal (Front Left) Audio system playing A waveform synchronized with sound signals is output
    P23-28 (FR-) - P23-3 (GND) P - BR Sound signal (Front Right) Audio system playing A waveform synchronized with sound signals is output
    P23-29 (RL-) - P23-3 (GND) P - BR Sound signal (Rear Left) Audio system playing A waveform synchronized with sound signals is output
    P23-30 (RR-) - P23-3 (GND) W - BR Sound signal (Rear Right) Audio system playing A waveform synchronized with sound signals is output
    P24-1 (MUTE) - P23-3 (GND) LG - BR Mute signal

    Power switch on (ACC)

    Audio system playing

    		 2.0 V or higher
    Audio system changing modes Below 1 V
    P24-2 (L-) - P23-3 (GND) R - BR Sound signal (Left) Audio system playing A waveform synchronized with sound signals is output
    P24-3 (L+) - P23-3 (GND) B - BR Sound signal (Left) Audio system playing A waveform synchronized with sound signals is output
    P24-4 (R-) - P23-3 (GND) G - BR Sound signal (Right) Audio system playing A waveform synchronized with sound signals is output
    P24-5 (R+) - P23-3 (GND) W - BR Sound signal (Right) Audio system playing A waveform synchronized with sound signals is output
    P24-6 (SLD) - Body ground Shield - Body ground Shield ground Always Below 1 V
    P24-7 (TX-) G AVC-LAN communication signal - -
    P24-8 (TX+) L AVC-LAN communication signal - -
    P24-11 (SPD) - P23-3 (GND) L - BR Vehicle speed signal

    Power switch on (IG)

    Wheel being rotated

    		 Pulse generation
    P24-12 (ACC) - P23-3 (GND) BE - BR Power source (ACC) Power switch off Below 1 V
    Power switch on (ACC) 11 to 14 V
    P24-14 (II1-) - P23-3 (GND) B - BR Voice signal Voice guidance sounding A waveform synchronized with voice signals is output
    P24-15 (II1+) - P23-3 (GND) W - BR Voice signal Voice guidance sounding A waveform synchronized with voice signals is output
    P24-18 (SLD1) - Body ground Shield - Body ground Shield ground Always Below 1 V

  4. MULTI-DISPLAY ASSEMBLY

    A0021G5N13
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specification
    K61-2 (ILL) - K61-13 (GND1) G - W-B Illumination signal Light control switch off Below 1 V

    Power switch off

    Light control switch in tail or head position

    		 11 to 14 V
    K61-7 (TX+) G AVC-LAN communication signal - -
    K61-11 (VMTI) - K61-13 (GND1) W - W-B Visual mute signal

    Power switch on (ACC)

    Screen display changes

    2 V or higher

    → Below 1 V

    → 2 V or higher
    K61-12 (B) - K61-13 (GND1) V - W-B Power source (+B) Power switch off 11 to 14 V
    K61-13 (GND1) - Body ground W-B - Body ground Ground Always Below 1 V
    K61-19 (TX-) V AVC-LAN communication signal - -
    K61-24 (ACC) - K61-13 (GND1) BE - W-B Power source (ACC) Power switch off Below 1 V
    Power switch on (ACC) 11 to 14 V
    K124-1 (GVIF) B Video signal (Digital) - -

  5. REMOTE OPERATION BOARD

    A0022YEN04
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specification
    K79-1 (ILL+) - K79-4 (GND) G - W-B Illumination signal Light control switch off Below 1 V

    Power switch off

    Light control switch in tail or head position

    		 11 to 14 V
    K79-4 (GND) - Body ground W-B - Body ground Ground Always Below 1 V
    K79-8 (ILL-) - K79-4 (GND) BE - W-B Illumination signal Light control switch off Below 1 V
    Light control switch in tail or head position Pulse generation
    K79-10 (TX+) B AVC-LAN communication signal - -
    K79-11 (TX-) W AVC-LAN communication signal - -
    K79-14 (ACC) - K79-4 (GND) BE - W-B Power source (ACC) Power switch off Below 1 V
    Power switch on (ACC) 11 to 14 V