POWER TRUNK LID SYSTEM TERMINALS OF ECU


  1. CHECK LUGGAGE CLOSER MOTOR ASSEMBLY


    1. B004WJBN41

      Disconnect the L10 luggage closer motor assembly connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L10-8 (IG) - Body ground B - Body ground IG power supply Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      L10-10 (ECUB) - Body ground LA-L - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
      L10-11 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      L10-12 (B) - Body ground B - Body ground Auxiliary battery power supply Power switch off 11 to 14 V

    3. Reconnect the L10 luggage closer motor assembly connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L10-1 (LCM-) - Body ground G - Body ground Luggage closer motor assembly (door lock motor) circuit Power trunk lid close operating 11 to 14 V
      Power trunk lid not operating Below 1 V
      L10-2 (LCM+) - Body ground B - Body ground Luggage closer motor assembly (door lock motor) circuit Power trunk lid open operating 11 to 14 V
      Power trunk lid not operating Below 1 V
      L10-4 (LDDN) - Body ground BE - Body ground Door control switch signal Door control switch on Below 1 V
      Door control switch off 11 to 14 V
      L10-7 (HAF) - Body ground V - Body ground Luggage closer motor assembly (half latch switch) signal Luggage closer motor assembly detecting a luggage compartment door ajar 11 to 14 V
      Luggage closer motor assembly not detecting a luggage compartment door ajar Below 1 V
      L10-16 (CSG) - Body ground L - Body ground Luggage closer motor assembly (door sensor) ground Always Below 1 Ω
      L10-17 (CS2) - Body ground B - Body ground Luggage closer motor assembly (door sensor) signal Luggage compartment door closer operating

      Pulse generation

      (See waveform 1)
      L10-18 (CS1) - Body ground G - Body ground Luggage closer motor assembly (door sensor) signal Luggage compartment door closer operating

      Pulse generation

      (See waveform 2)
      L10-19 (CSV) - Body ground GR - Body ground Luggage closer motor assembly (door sensor) power supply Always 7 V or higher
      L10-20 (PAWL) - Body ground R - Body ground Luggage closer motor assembly (pawl switch) signal Luggage closer motor assembly detecting a luggage compartment door ajar Below 1 V
      Luggage closer motor assembly not detecting a luggage compartment door ajar Pulse generation
      L10-21 (SWG) - Body ground W - Body ground Luggage closer motor assembly (each switch) ground Always Below 1 Ω
      L10-24 (KSIN) - Body ground* G - Body ground Kick detection signal Kick door control sensor not detecting a foot → detecting a foot

      Pulse generation

      (See waveform 3)

      *: w/ Hands Free Power Trunk Lid


      1. B004TZ7N01

        Using an oscilloscope, check waveform 1.

        Waveform 1 (Reference)
        Item Condition
        Tester connection L10-17 (CS2) - Body ground
        Tool setting 2V/DIV, 10 ms/DIV.
        Vehicle condition Luggage compartment door closer operating

        Tech Tips

        The period changes in accordance to the speed at which the luggage compartment door is opened and closed.

      2. B004XD0N01

        Using an oscilloscope, check waveform 2.

        Waveform 2 (Reference)
        Item Condition
        Tester connection L10-18 (CS1) - Body ground
        Tool setting 2V/DIV, 10 ms/DIV.
        Vehicle condition Luggage compartment door closer operating

        Tech Tips

        The period changes in accordance to the speed at which the luggage compartment door is opened and closed.

      3. B004TIRC01
        *a Kick detection signal

        Using an oscilloscope, check waveform 3.

        Waveform 3 (Reference)
        Item Condition
        Tester connection L10-24 (KSIN) - Body ground
        Tool setting 2V/DIV, 50 ms/DIV.
        Vehicle condition Kick door control sensor not detecting a foot → detecting a foot

  2. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    B004WC0C01
    *1 Main Body ECU (Multiplex Network Body ECU) - -

    1. Remove the main body ECU (multiplex network body ECU).

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    2. Connect the instrument panel junction block assembly 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-11 (GND1) - Body ground None - Body ground Ground Always Below 1 Ω
      A-30 (ACC) - Body ground None - Body ground ACC power supply Power switch on (ACC) 11 to 14 V
      Power switch off Below 1 V
      A-31 (BECU) - Body ground None - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
      A-32 (IG) - Body ground None - Body ground IG power supply Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V

    4. Install the main body ECU (multiplex network body ECU) to the instrument panel junction block assembly.

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    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
      G17-4 (TSW) - Body ground W - Body ground Trunk and fuel switch assembly (luggage door opening switch) signal Trunk and fuel switch assembly (luggage door opening switch) on Below 1 V
      Power switch off, all doors closed and trunk and fuel switch assembly (luggage door opening switch) off Pulse generation
      G12-27 (TMSW) - Body ground B - Body ground Luggage door opening cancel switch assembly signal Luggage door opening cancel switch on Below 1 V
      Power switch off, all doors closed and luggage door opening cancel switch off 11 to 14 V

  3. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

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