PARKING SUPPORT BRAKE SYSTEM TERMINALS OF ECU


  1. CLEARANCE WARNING ECU ASSEMBLY

    B006H1IE37

    1. Disconnect the L18 clearance warning ECU assembly connector.

    2. Measure the voltage and resistance on the wire harness side connector according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L18-1 (IG) - L18-30 (E) R - W-B IG power source signal Engine switch off Below 1 V
      Engine switch on (IG) 10.5 to 16 V
      L18-30 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the L18 clearance warning ECU assembly connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L18-4 (BOF) - L18-30 (E) R - W-B Power source for front sensor circuit

      • Engine switch on (IG)

      • Parking support brake system on

      		 11 to 14 V
      L18-6 (E5) - L18-30 (E) G - W-B Ground for front clearance sonar Always Below 1 Ω
      L18-8 (SOF) - L18-30 (E) W - W-B Front sensor communication signal (Front clearance sonar sensor)

      • Engine running

      • Parking support brake system on

      • Shift position in any position other than P

      • Vehicle speed is less than approximately 10 km/h (6 mph)

      Pulse generation

      (Refer to waveform 1)
      L18-14 (CBZ) - L18-13 (EF) LG - L Clearance warning buzzer No. 1 signal Buzzer sounding

      Pulse generation

      (Refer to waveform 2)
      L18-15 (BBZ) - L18-16 (ER) L - R Clearance warning buzzer No. 2 signal Buzzer sounding (Refer to waveform 2)
      L18-22 (BOR) - L18-30 (E) GR - W-B Power source for rear sensor circuit

      • Engine switch on (IG)

      • Parking support brake system on

      		 11 to 14 V
      L18-23 (E1) - L18-30 (E) W - W-B Ground for rear clearance sonar Always Below 1 Ω
      L18-24 (SOR) - L18-30 (E) P - W-B Rear sensor communication signal (Rear clearance sonar sensor)

      • Engine running

      • Parking support brake system on

      • Shift position in R

      Pulse generation

      (Refer to waveform 3)

    5. Using an oscilloscope, check waveform 1.


      1. B006FVPN08

        Waveform 1 (Reference)

        Item Content
        Measurement terminal L18-8 (SOF) - L18-30 (E)
        Measurement setting 5 V/DIV., 1 ms./DIV.
        Condition

        • Engine running

        • Parking support brake system on

        • Shift position in any position other than P or R

        • Vehicle speed is less than approximately 10 km/h (6 mph)

    6. Using an oscilloscope, check waveform 2.


      1. B006D18N05

        Waveform 2 (Reference)

        Item Content
        Measurement terminal

        L18-14 (CBZ) - L18-13 (EF)

        L18-15 (BBZ) - L18-16 (ER)
        Measurement setting 2 V/DIV., 500 μs./DIV.
        Condition Buzzer sounding

        Tech Tips

        The amplitude of the waveform changes according to the set volume.

    7. Using an oscilloscope, check waveform 3.


      1. B006FVPN08

        Waveform 3 (Reference)

        Item Content
        Measurement terminal L18-24 (SOR) - L18-30 (E)
        Measurement setting 5 V/DIV., 1 ms./DIV.
        Condition

        • Engine running

        • Parking support brake system on

        • Shift position in R

  2. ECM (for 8GR-FKS)

    Click here

  3. ECM (for V35A-FTS)

    Click here

  4. COMBINATION METER ASSEMBLY

    Click here

  5. BLIND SPOT MONITOR SENSOR RH (w/ Blind Spot Monitor System)

    Click here

  6. BLIND SPOT MONITOR SENSOR LH (w/ Blind Spot Monitor System)

    Click here

  7. REAR TELEVISION CAMERA ASSEMBLY (w/ Blind Spot Monitor System and w/ Panoramic View Monitor System)

    Click here