AUDIO AND VISUAL SYSTEM TERMINALS OF ECU

Tech Tips

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


  1. RADIO AND DISPLAY RECEIVER ASSEMBLY

    A0029Q0N01
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specification
    F69-1 (FR+) - F69-7 (GND1) W - BR Sound signal (Front right) Audio system playing A waveform synchronized with sounds is output
    F69-2 (FL+) - F69-7 (GND1) LA-B - BR Sound signal (Front left) Audio system playing A waveform synchronized with sounds is output
    F69-3 (ACC1) - F69-7 (GND1) GR - BR Power source (ACC) Ignition switch off Below 1 V
    Ignition switch ACC 11 to 14 V
    F69-4 (+B1) - F69-7 (GND1) LA-SB - BR Power source (+B) Always 11 to 14 V
    F69-5 (FR-) - F69-7 (GND1) B - BR Sound signal (Front right) Audio system playing A waveform synchronized with sounds is output
    F69-6 (FL-) - F69-7 (GND1) LA-GR - BR Sound signal (Front left) Audio system playing A waveform synchronized with sounds is output
    F69-7 (GND1) - Body ground BR - Body ground Ground Always Below 1 V
    F69-8 (TMUT) - F69-7 (GND1)*1 Y - BR Mute Signal

    Ignition switch ACC

    Audio system playing

    		 2.0 V or higher
    Emergency call mode Below 1 V
    F69-10 (ILL+) - F69-7 (GND1) G - BR Illumination signal Light control switch off Below 1 V
    Light control switch in tail or head position 11 to 14 V
    F70-1 (RR+) - F69-7 (GND1) P - BR Sound signal (Rear right) Audio system playing A waveform synchronized with sounds is output
    F70-2 (RL+) - F69-7 (GND1) L - BR Sound signal (Rear left) Audio system playing A waveform synchronized with sounds is output
    F70-3 (RR-) - F69-7 (GND1) GR - BR Sound signal (Rear right) Audio system playing A waveform synchronized with sounds is output
    F70-5 (ILL-) - F69-7 (GND1) W - BR Illumination signal Light control switch off Below 1 V
    Light control switch in tail or head position Pulse generation
    F70-6 (RL-) - F69-7 (GND1) R - BR Sound signal (Rear left) Audio system playing A waveform synchronized with sounds is output
    F71-1 (IG) - F69-7 (GND1) R - BR Power source (IG) Ignition switch off Below 1 V
    Ignition switch ON 11 to 14 V
    F71-2 (REV) - F69-7 (GND1) R - BR Reverse signal

    See "Check Vehicle Signal" in Operation Check

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    		-
    F71-4 (MACC) - F69-7 (GND1)*2 G - BR Microphone power supply Ignition switch off Below 1 V
    Ignition switch ACC 4 to 6 V
    F71-5 (MIN+) - F69-7 (GND1) L - BR Microphone voice signal

    See "Check Microphone" in Operation Check

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    		-
    F71-6 (SNS2) - F69-7 (GND1) V - BR Microphone connection detection signal Always Below 1 V
    F71-9 (CANH) B CAN communication signal - -
    F71-10 (CANL) W CAN communication signal - -
    F71-11 (AGND) - Body ground Shield - Body ground Shield ground Always Below 1 V
    F71-12 (SG) - Body ground Shield - Body ground Shield ground Always Below 1 V
    F71-15 (PKB) - F69-7 (GND1) B - BR Parking brake signal

    See "Check Vehicle Signal" in Operation Check

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    		-
    F71-17 (SPD) - F69-7 (GND1) GR - BR Vehicle speed signal

    See "Check Vehicle Signal" in Operation Check

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    		-
    F71-18 (SGND) - Body ground Shield - Body ground Shield ground Always Below 1 V
    F71-19 (MIN-) - F69-7 (GND1) P - BR Microphone voice signal

    See "Check Microphone" in Operation Check

    Click here

    		-
    F71-21 (SW1) - F71-23 (SWG) P - R 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
    F71-22 (SW2) - F71-23 (SWG) L - R Steering pad switch signal No switch pushed 2.97 to 3.56 V
    MODE/HOLD 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
    F71-23 (SWG) - F69-7 (GND1) R - BR Steering pad switch ground Always Below 1 V
    F71-25 (ADPG) - F69-7 (GND1) BE - BR External device connection detection signal External device connected Below 1 V
    External device not connected

    2.1 to 3 V*3

    2.7 to 3.4 V*4
    F71-26 (VAR+) - F71-27 (VA-) R - B Sound signal (Right) External device playing (When stereo jack used) A waveform synchronized with sounds is output
    F71-27 (VA-) - F69-7 (GND1) B - BR Ground Always Below 1 V
    F71-28 (VAL+) - F71-27 (VA-) W - B Sound signal (Left) External device playing (When stereo jack used) A waveform synchronized with sounds is output
    F72-3 (CNH1) GR Local bus communication signal - -
    F72-4 (CNL1) SB Local bus communication signal - -
    F72-11 (CA+) - F69-7 (GND1) B - BR Television camera power supply Ignition switch ACC

    5.5 to 7.05 V*3

    5.8 to 7.5 V*4
    F72-12 (V+) - F69-7 (GND1) R - BR Video signal

    Ignition switch ON

    Shift lever in R

    Camera lens not covered, displaying an image

    Pulse generation

    (Refer to waveform 1)

    Ignition switch ON

    Shift lever in R

    Camera lens covered, blacking out screen

    Pulse generation

    (Refer to waveform 2)
    F72-23 (CGND) - Body ground Shield - Body ground Shield ground Always Below 1 V
    F72-24 (V-) - F69-7 (GND1) W - BR Ground Always Below 1 V
    F113-1 (USV1) - Power source - -
    F113-2 (US1-) - Data signal - -
    F113-3 (US1+) - Data signal - -
    F113-4 (UGD1) - Ground - -
    F113-5 (USG1) - Shield ground - -
    RA-5 (ANT+) - F69-7 (GND1) - - BR Power source of antenna

    Ignition switch ACC

    Radio switch on and FM or AM selected

    11 to 14 V*3

    7 V or higher*4

    • *1: w/ Manual (SOS) Switch

    • *2: w/o Manual (SOS) Switch

    • *3: w/ Toyota Link Function

    • *4: w/o Toyota Link Function


    1. Reference (Oscilloscope waveform):


      1. A002AKYC06
        *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 F72-12 (V+) - F69-7 (GND1)
        Measurement setting 200 mV/DIV., 50 μsec./DIV.
        Condition Ignition switch ON, shift lever in R

        Tech Tips


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

        • The video waveform is constantly output when the ignition switch is ACC.

      2. A00274UC04
        *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 F72-12 (V+) - F69-7 (GND1)
        Measurement setting 200 mV/DIV., 50 μsec./DIV.
        Condition Ignition switch ON, shift lever in R

        Tech Tips


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

        • The video waveform is constantly output when the ignition switch is ACC.

  2. COMBINATION METER ASSEMBLY

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  3. TELEMATICS TRANSCEIVER (w/ Manual (SOS) Switch)

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