TELEMATICS SYSTEM TERMINALS OF ECU

Tech Tips

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


  1. TELEMATICS TRANSCEIVER

    B001FQYC19
    *a Connector Color: Gray (to GNSS Antenna) *b Connector Color: Blue (to Telephone Antenna)
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    G187-1 (+B) - G187-4 (E) R - W-B Power source (+B) Always 11 to 14 V
    G187-2 (SPI+) - G187-4 (E) R - W-B Sound signal Audio system playing A waveform synchronized with sound signals is output
    G187-3 (SPI-) - G187-4 (E) W - W-B Sound signal Audio system playing A waveform synchronized with sound signals is output
    G187-4 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
    G187-5 (SPO+) - G187-4 (E) P - W-B Sound signal Audio system playing, or emergency call mode A waveform synchronized with sound signals is output
    G187-6 (SPO-) - G187-4 (E) V - W-B Sound signal Audio system playing, or emergency call mode A waveform synchronized with sound signals is output
    G187-7 (IG2) - G187-4 (E) W - W-B Power source (IG) Ignition switch ON 11 to 14 V
    Ignition switch off Below 1 V
    G187-8 (ACC) - G187-4 (E) P - W-B Power source (ACC) Ignition switch ACC 11 to 14 V
    Ignition switch off Below 1 V
    G187-9 (SLED) - G187-4 (E) G - W-B Manual (SOS) switch illumination power supply Ignition switch ACC 11 to 14 V
    Ignition switch off Below 1 V
    G187-10 (SPDP) - G187-4 (E) R - W-B Vehicle speed signal

    See "Vehicle Signal Check Mode" in Operation Check

    w/o Navigation System: Click here

    w/ Navigation System: Click here

    		-
    G187-11 (IND1) - G187-4 (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
    G187-12 (IND2) - G187-4 (E) L - 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
    G187-15 (CANP) B CAN communication signal - -
    G187-16 (CANN) W CAN communication signal - -
    G187-17 (MUTE) - G187-4 (E) P - W-B Mute signal Audio system playing 3.5 to 5 V
    Emergency call mode Below 1 V
    G187-18 (MCO+) - G187-4 (E) B - W-B Sent microphone voice signal

    See "Microphone Check" in Operation Check

    w/o Navigation System: Click here

    w/ Navigation System: Click here

    		-
    G187-19 (MCO-) - G187-4 (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

    		-
    G187-23 (ILL+) - G187-4 (E) V - W-B Illumination signal Light control switch off Below 1 V
    Light control switch in tail or head position 11 to 14 V
    G187-24 (GSW) - G187-4 (E) B - W-B Collision detection signal Ignition switch ON

    Pulse generation

    (Refer to waveform 1)
    G187-26 (SIG-) - G187-4 (E) LG - W-B Ground Always Below 1 Ω
    G187-27 (SIG1) - G187-4 (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
    G187-32 (SGND) - G187-4 (E) Shielded - W-B Shield ground Always Below 1 Ω
    G187-33 (MCVD) - G187-4 (E) R - W-B Microphone power supply Ignition switch off Below 1 V
    Ignition switch ACC 4 to 6 V
    G187-34 (MCI+) - G187-4 (E) B - W-B Receive microphone voice signal

    See "Microphone Check" in Operation Check

    w/o Navigation System: Click here

    w/ Navigation System: Click here

    		-
    G187-35 (MCI-) - G187-4 (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

    		-

    1. B001FJ0N08

      Oscilloscope waveform:


      1. Waveform 1

        Item Condition
        Tester connection G187-24 (GSW) - G187-4 (E)
        Tool setting 5.0 V/DIV., 20 ms/DIV.
        Vehicle condition Ignition switch ON

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

    w/o Navigation System: Click here

    w/ Navigation System: Click here