TELEMATICS SYSTEM TERMINALS OF ECU

Tech Tips

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


  1. TELEMATICS TRANSCEIVER

    A01V8MMC05
    *a Connector Color: Gray (to GNSS Antenna) *b Connector Color: Blue (to Telephone Antenna)
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    M38-1 (+B) - M38-4 (E) B - W-B Power source (+B) Always 11 to 14 V
    M38-2 (SPI+) - M38-4 (E) P - W-B Sound signal Audio system playing A waveform synchronized with sound signals is output
    M38-3 (SPI-) - M38-4 (E) V - W-B Sound signal Audio system playing A waveform synchronized with sound signals is output
    M38-4 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
    M38-5 (SPO+) - M38-4 (E) LG - W-B Sound signal Audio system playing, or emergency call mode A waveform synchronized with sound signals is output
    M38-6 (SPO-) - M38-4 (E) L - W-B Sound signal Audio system playing, or emergency call mode A waveform synchronized with sound signals is output
    M38-7 (IG2) - M38-4 (E) SB - W-B Power source (IG) Ignition switch ON 11 to 14 V
    Ignition switch off Below 1 V
    M38-8 (ACC) - M38-4 (E) W - W-B Power source (ACC) Ignition switch ACC 11 to 14 V
    Ignition switch off Below 1 V
    M38-9 (SLED) - M38-4 (E) L - W-B Manual (SOS) switch illumination power supply Ignition switch ACC 11 to 14 V
    Ignition switch off Below 1 V
    M38-10 (SPDP) - M38-4 (E) L - W-B Vehicle speed signal

    See "Vehicle Signal Check Mode" in Operation Check

    w/o Navigation System: Click here

    w/ Navigation System: Click here

    		-
    M38-11 (IND1) - M38-4 (E) P - W-B Manual (SOS) switch indicator (red) illumination signal For 10 seconds after ignition switch turned to ON 1 to 8.5 V
    Ignition switch off Below 1 V
    M38-12 (IND2) - M38-4 (E) SB - W-B Manual (SOS) switch indicator (green) illumination signal For 2 seconds after ignition switch turned to ON and the manual (SOS) switch indicator (red) has illuminated for 10 seconds 1 to 8.5 V
    Ignition switch off Below 1 V
    M38-15 (CANP)

    R*1

    L*2

    		 CAN communication signal - -
    M38-16 (CANN) W CAN communication signal - -
    M38-17 (MUTE) - M38-4 (E) V - W-B Mute signal Audio system playing 3.5 to 5 V
    Emergency call mode Below 1 V
    M38-18 (MCO+) - M38-4 (E) W - W-B Sent microphone voice signal

    See "Microphone Check" in Operation Check

    w/o Navigation System: Click here

    w/ Navigation System: Click here

    		-
    M38-19 (MCO-) - M38-4 (E) R - W-B Sent microphone voice signal

    See "Microphone Check" in Operation Check

    w/o Navigation System: Click here

    w/ Navigation System: Click here

    		-
    M38-23 (ILL+) - M38-4 (E) G - W-B Illumination signal Light control switch off Below 1 V
    Light control switch in tail or head position 11 to 14 V
    M38-24 (GSW) - M38-4 (E) V - W-B Collision detection signal Ignition switch ON

    Pulse generation

    (Refer to waveform 1)
    M38-26 (SIG-) - M38-4 (E) BE - W-B Ground Always Below 1 Ω
    M38-27 (SIG1) - M38-4 (E) G - W-B Manual (SOS) switch condition signal Manual (SOS) switch not pressed 2.0 to 2.3 V
    Manual (SOS) switch pressed Below 1 V
    M38-32 (SGND) - M38-4 (E) Shielded - W-B Shield ground Always Below 1 Ω
    M38-33 (MCVD) - M38-4 (E) B - W-B Microphone power supply Ignition switch off Below 1 V
    Ignition switch ACC 4 to 6 V
    M38-34 (MCI+) - M38-4 (E) W - W-B Receive microphone voice signal

    See "Microphone Check" in Operation Check

    w/o Navigation System: Click here

    w/ Navigation System: Click here

    		-
    M38-35 (MCI-) - M38-4 (E) R - W-B Receive microphone voice signal

    See "Microphone Check" in Operation Check

    w/o Navigation System: Click here

    w/ Navigation System: Click here

    		-

    • *1: w/ Central Gateway ECU

    • *2: w/o Central Gateway ECU


    1. A01V8D3N08

      Oscilloscope waveform:


      1. Waveform 1

        Item Condition
        Tester connection M38-24 (GSW) - M38-4 (E)
        Tool setting 5.0 V/DIV., 20 ms/DIV.
        Vehicle condition Ignition switch ON

  2. RADIO RECEIVER ASSEMBLY (for Radio Receiver Type)

    Click here

  3. RADIO AND DISPLAY RECEIVER ASSEMBLY (for Radio and Display Type)

    w/o Navigation System: Click here

    w/ Navigation System: Click here