VEHICLE PROXIMITY NOTIFICATION SYSTEM TERMINALS OF ECU


  1. CHECK VEHICLE APPROACHING SPEAKER CONTROLLER


    1. A000O75E02

      Disconnect the T55 vehicle approaching speaker controller connector.

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

      Terminal No. Wiring Color Terminal Description Condition Specified Condition
      T55-1 (IG) - Body ground L - Body ground IG power supply Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      T55-7 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the T55 vehicle approaching speaker controller connector.

    4. Measure the voltage and waveform according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      T55-2 (STP) - T55-7 (GND) R - W-B Stop light switch signal input Brake pedal depressed 8 V or higher
      Brake pedal released Below 1 V
      T55-3 (SP+) - T55-8 (SP-) V - Y Vehicle approaching speaker signal output

      Driving in EV drive mode at approximately 20 km/h (12 mph) or less

      (Vehicle approaching speaker operating)

      		 A waveform synchronized with the sound is output.
      T55-5 (SW) - T55-7 (GND) P - W-B Integration control and panel assembly (vehicle approaching speaker switch) signal Power switch on (IG), integration control and panel assembly (vehicle approaching speaker switch) on 6 V or higher
      Power switch on (IG), integration control and panel assembly (vehicle approaching speaker switch) off Below 1 V
      T55-6 (SPD) - T55-7 (GND) SB - W-B Speed signal input Driving at approximately 20 km/h (12 mph)

      Pulse generation

      (See Waveform 1)
      T55-9 (PRST) - T55-7 (GND) L - W-B SIL communication signal Power switch on (IG), during transmission

      Pulse generation

      (See Waveform 2)
      T55-10 (IND) - T55-7 (GND) B - W-B Integration control and panel assembly (vehicle approaching speaker switch) indicator signal Power switch on (IG), integration control and panel assembly (vehicle approaching speaker switch) on Below 2.8 V
      Power switch on (IG), integration control and panel assembly (vehicle approaching speaker switch) off 11 to 14 V
      T55-11 (SFTP) - T55-7 (GND) Y - W-B Shift lever position sensor signal input Power switch on (IG), Shift lever in P Below 2.5 V
      Power switch on (IG), Shift lever not in P 8 V or higher
      T55-12 (OPSW) - T55-7 (GND) L - W-B Engine oil pressure switch signal input Power switch on (Ready), engine stopped Below 2.0 V
      Power switch on (Ready), engine running 8 V or higher

      1. A000NFEE01

        Waveform 1 (Reference):

        Item Condition
        Tester Connection T55-6 (SPD) - T55-7 (GND)
        Tool Setting 5 V/DIV., 20 ms./DIV.
        Vehicle Condition Driving at approximately 20 km/h (12 mph)

        Tech Tips

        If the vehicle speed increases, width (A) becomes narrower.

      2. A000PQIE01

        Waveform 2 (Reference):

        Item Condition
        Tester Connection T55-9 (PRST) - T55-7 (GND)
        Tool Setting 5 V/DIV., 10 ms./DIV.
        Vehicle Condition Power switch on (IG), during transmission

  2. CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND COWL SIDE JUNCTION BLOCK LH

    B002BJJE27
    Text in Illustration
    *1 Main Body ECU (Multiplex Network Body ECU) - -

    1. Remove the main body ECU from the cowl side junction block LH Click here.

    2. Connect the cowl side junction block LH connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A-32 (IG) - Body ground - Ignition power supply Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      A-30 (BECU) - Body ground - Battery power supply Always 11 to 14 V
      A-29 (ACC) - Body ground - ACC power supply Power switch on (ACC) 11 to 14 V
      Power switch off Below 1 V
      A-11 (GND1) - Body ground - Ground Always Below 1 Ω

    4. Install the main body ECU Click here.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      N12-3 (SFTP) - Body ground B - Body ground Shift position P signal Power switch on (IG), Shift lever in P Below 2.5 V
      Power switch on (IG), Shift lever not in P 8 V or higher