POWER BACK DOOR SYSTEM TERMINALS OF ECU


  1. CHECK MULTIPLEX NETWORK DOOR ECU

    Note

    If the replacement, removal and installation of the multiplex network door ECU or disconnection of the connectors of the multiplex network door ECU has been performed, initialize the power back door system.

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    1. Disconnect the V12 and V13 multiplex network door ECU connectors.

      B003OX3N09

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

      Tech Tips

      Measure the values on the wire harness side with the connector disconnected.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      V12-1 (ECUB) - Body ground W - Body ground Battery power supply Always 11 to 14 V
      V12-7 (IG) - Body ground V - Body ground IG power supply Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V
      V13-7 (GND) - Body ground W-B - Body ground Body ground Always Below 1 Ω
      V13-8 (B) - Body ground G - Body ground Battery power supply Always 11 to 14 V

    3. Reconnect the V12 and V13 multiplex network door ECU connectors.

    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
      V12-2 (DSG2) - Body ground P - Body ground Power back door unit assembly set RH (door sensor) ground Always Below 1 V
      V12-3 (DSV2) - Body ground G - Body ground Power back door unit assembly set RH (door sensor) power supply Always 7 V or higher
      V12-4 (BDDN) - Body ground LG - Body ground Back door control switch signal Back door control switch on Below 1 V
      Back door control switch off Pulse generation
      V12-5 (BZR+) - Body ground V - Body ground Wireless door lock buzzer signal Power back door warning buzzer sounding Pulse generation
      Power back door warning buzzer not sounding Below 1 V
      V12-8 (PBDS) - Body ground R - Body ground Door control switch assembly signal Door control switch assembly on Below 1 V
      Door control switch assembly off 11 to 14 V
      V12-11 (DSG) - Body ground P - Body ground Power back door unit assembly set LH (door sensor) ground Always Below 1 V
      V12-12 (DSV) - Body ground G - Body ground Power back door unit assembly set LH (door sensor) power supply Always 7 V or higher
      V12-16 (OSR) - V12-17 (OSE) SB - GR Power back door sensor assembly RH signal Power back door sensor assembly RH not pressed 4 to 6 V
      Power back door sensor assembly RH pressed Below 1 V
      V12-18 (OSL) - V12-17 (OSE) L - GR Power back door sensor assembly LH signal Power back door sensor assembly LH not pressed 4 to 6 V
      Power back door sensor assembly LH pressed Below 1 V
      V12-19 (MSW) - Body ground G - Body ground Power back door main switch signal Power back door main switch on Below 1 V
      Power back door main switch off Pulse generation
      V12-22 (DS2) - Body ground R - Body ground Power back door unit assembly set LH (door sensor) signal Power back door not operating 7 V or higher
      Power back door operating

      Pulse generation

      (See waveform 2)
      V12-23 (DS1) - Body ground L - Body ground Power back door unit assembly set LH (door sensor) signal Power back door not operating 7 V or higher
      Power back door operating

      Pulse generation

      (See waveform 1)
      V12-25 (DS22) - Body ground R - Body ground Power back door unit assembly set RH (door sensor) signal Power back door not operating 7 V or higher
      Power back door operating

      Pulse generation

      (See waveform 2)
      V12-26 (DS12) - Body ground L - Body ground Power back door unit assembly set RH (door sensor) signal Power back door not operating 7 V or higher
      Power back door operating

      Pulse generation

      (See waveform 1)
      V13-10 (DC+) - V13-9 (DC-) B - R Back door lock assembly (back door lock motor) circuit Back door lock motor operating 11 to 14 V

      1. B003S99N01

        Using an oscilloscope, check waveform 1.

        Waveform 1 (Reference)
        Item Condition
        Tester connection

        • V12-23 (DS1) - Body ground

        • V12-26 (DS12) - Body ground
        Tool setting 2 V/DIV., 2 ms./DIV.
        Vehicle condition Power back door operating

        Tech Tips

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

      2. B003SF0N01

        Using an oscilloscope, check waveform 2.

        Waveform 2 (Reference)
        Item Condition
        Tester connection

        • V12-22 (DS2) - Body ground

        • V12-25 (DS22) - Body ground
        Tool setting 2 V/DIV., 2 ms./DIV.
        Vehicle condition Power back door operating

        Tech Tips

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

  2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. Disconnect the G16 certification ECU (smart key ECU assembly) connector.

      B003RONN07

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

      Tech Tips

      Measure the values on the wire harness side with the connector disconnected.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      G16-1 (+B) - Body ground P - Body ground Battery power supply Always 11 to 14 V
      G16-10 (E) - Body ground BR - Body ground Body ground Always Below 1 Ω

    3. Reconnect the G16 certification ECU (smart key ECU assembly) connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      G16-14 (TSW5) - G16-10 (E) V - BR Back door opener switch assembly signal Back door opener switch assembly (open switch) off → on 4.5 V or higher → Below 1.5 V