VEHICLE PROXIMITY NOTIFICATION SYSTEM TERMINALS OF ECU


  1. CHECK VEHICLE APPROACHING SPEAKER CONTROLLER

    A005C03E03

    1. Disconnect the L130 vehicle approaching speaker controller connector.

    2. Measure the voltage according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L130-1 (IG) - Body ground BE - Body ground IG power supply Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V

      If the result is not as specified, there may be a malfunction in the wire harness.

    3. Measure the resistance according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L130-7 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

      If the result is not as specified, there may be a malfunction in the wire harness.

    4. Reconnect the L130 vehicle approaching speaker controller connector.

    5. Measure the voltage and check for pulses according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L130-2 (STP) - L130-7 (GND) L - W-B Stop light signal input Power switch off, brake pedal depressed 8 V or higher
      Power switch off, brake pedal released Below 1 V
      L130-3 (SP+) - L130-8 (SP-) R - W Vehicle approaching speaker output Vehicle approaching speaker operating

      A waveform synchronized with the sound is output.

      (See Waveform 1)
      L130-4 (TAIL) - L130-7 (GND) R - W-B TAIL signal input Power switch on (IG), light control switch in tail or head position 6.5 V or higher
      Power switch on (IG), light control switch in neither tail nor head position Below 1 V
      L130-5 (SW) - L130-7 (GND) L - W-B Vehicle approaching speaker switch signal input Power switch on (IG), vehicle approaching speaker switch ON 6 V or higher
      Power switch on (IG), vehicle approaching speaker switch off Below 1 V
      L130-6 (SPD) - L130-7 (GND) L - W-B Speed signal input Power switch on (IG), Wheel being rotated

      Pulse generation

      (See Waveform 2)
      L130-9 (PRST) - L130-7 (GND) V - W-B SIL communication system Power switch on (IG), during transmission Pulse generation
      L130-10 (IND) - L130-7 (GND) L - W-B Vehicle approaching speaker switch signal input Power switch on (IG), vehicle approaching speaker switch ON Below 1.8 V
      Power switch on (IG), vehicle approaching speaker switch off 11 to 14 V
      L130-11 (SFTP) - L130-7 (GND) W - W-B Transmission shift main switch signal input Power switch on (IG), park (P) selected Below 2.5 V
      Power switch on (IG), park (P) not selected 8 V or higher
      L130-12 (OPSW) - L130-7 (GND) LG - W-B Engine oil pressure switch signal input Power switch on (READY), engine not started Below 2 V
      Power switch on (READY), engine started 8 V or higher

      If the result is not as specified, there is a problem in the vehicle approaching speaker controller or wire harness.


      1. A005E1UE01

        Waveform 1

        Item Condition
        Tool setting 1 V/DIV., 200 ms./DIV.
        Vehicle condition Vehicle approaching speaker operating
      2. A005DTME14

        Waveform 2

        Item Condition
        Tool setting 5 V/DIV., 20 ms./DIV.
        Vehicle condition Power switch on (IG), Wheel being rotated

        Tech Tips

        When the system is functioning normally, one wheel revolution generates 4 pulses. As the vehicle speed increases, the width indicated by (A) in the illustration narrows.