TELEMATICS SYSTEM TERMINALS OF ECU

Tech Tips

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


  1. TELEMATICS TRANSCEIVER

    A0021S3C36
    *a Connector Color: Gray (to GNSS Antenna) *b Connector Color: Blue (to Telephone Antenna)
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    K158-1 (+B) - K158-4 (E) P - BR Power source (+B) Power switch off 11 to 14 V
    K158-2 (SPI+) - K158-4 (E) BE - BR Sound signal Audio system playing A waveform synchronized with sound signals is output
    K158-3 (SPI-) - K158-4 (E) P - BR Sound signal Audio system playing A waveform synchronized with sound signals is output
    K158-4 (E) - Body ground BR - Body ground Ground Always Below 1 V
    K158-5 (SPO+) - K158-4 (E) BE - BR Sound signal Audio system playing, or emergency call mode A waveform synchronized with sound signals is output
    K158-6 (SPO-) - K158-4 (E) P - BR Sound signal Audio system playing, or emergency call mode A waveform synchronized with sound signals is output
    K158-7 (IG2) - K158-4 (E) L - BR Power source (IG) Power switch on (IG) 11 to 14 V
    Power switch off Below 1 V
    K158-8 (ACC) - K158-4 (E) BE - BR Power source (ACC) Power switch on (ACC) 11 to 14 V
    Power switch off Below 1 V
    K158-9 (SLED) - K158-4 (E) SB - BR Manual (SOS) switch illumination power supply Power switch on (ACC) 11 to 14 V
    Power switch off Below 1 V
    K158-10 (SPDP) - K158-4 (E) L - BR Vehicle speed signal

    See "Vehicle Signal Check Mode" in Operation Check

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    		-
    K158-11 (IND1) - K158-4 (E) G - BR Manual (SOS) switch indicator (red) illumination signal For 10 seconds after Power switch turned on (IG) 1 to 8.5 V
    Power switch off Below 1 V
    K158-12 (IND2) - K158-4 (E) P - BR Manual (SOS) switch indicator (green) illumination signal For 2 seconds after Power switch turned on (IG) 1 to 8.5 V
    Power switch off Below 1 V
    K158-15 (CANP) LG CAN communication signal - -
    K158-16 (CANN) B CAN communication signal - -
    K158-17 (MUTE) - K158-4 (E) B - BR Mute signal Audio system playing 5.0 V or less
    Emergency call mode Below 1 V
    K158-18 (MCO+) - K158-4 (E) W - BR Sent microphone voice signal

    See "Microphone Check" in Operation Check

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    		-
    K158-19 (MCO-) - K158-4 (E) B - BR Sent microphone voice signal

    See "Microphone Check" in Operation Check

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    		-
    K158-23 (ILL+) - K158-4 (E) LG - BR Illumination signal Light control switch off Below 1 V
    Light control switch in tail or head position 6.8 V or higher
    K158-24 (GSW) - K158-4 (E) W - BR Collision detection signal Power switch on (IG)

    Pulse generation

    (Refer to waveform 1)
    K158-26 (SIG-) - K158-4 (E) V - BR Ground Always Below 1 Ω
    K158-27 (SIG1) - K158-4 (E) Y - BR Manual (SOS) switch condition signal Manual (SOS) switch not pressed 2.0 to 2.3 V
    Manual (SOS) switch pressed Below 1 V
    K158-32 (SGND) - K158-4 (E) Shield - BR Shield ground Always Below 1 Ω
    K158-33 (MCVD) - K158-4 (E) R - BR Microphone power supply Power switch off Below 1 V
    Power switch on (ACC) 4 to 6 V
    K158-34 (MCI+) - K158-4 (E) W - BR Receive microphone voice signal

    See "Microphone Check" in Operation Check

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    		-
    K158-35 (MCI-) - K158-4 (E) B - BR Receive microphone voice signal

    See "Microphone Check" in Operation Check

    Click here

    		-

    1. A0021LGN08

      Oscilloscope waveform:


      1. Waveform 1

        Item Condition
        Tester connection K158-24 (GSW) - K158-4 (E)
        Tool setting 5.0 V/DIV., 20 ms/DIV.
        Vehicle condition Power switch on (IG)

  2. RADIO RECEIVER ASSEMBLY

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