LUGGAGE COMPARTMENT DOOR OPENER SYSTEM TERMINALS OF ECU


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

    B0086F2C09
    *A for LHD *B for RHD

    1. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

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    2. Reconnect the instrument panel junction block assembly connectors.

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

      Tech Tips

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      MB-11 (GND1) - Body ground - Ground Always Below 1 Ω
      MB-31 (BECU) - Body ground - Battery power supply Always 11 to 14 V
      MB-30 (ACC) - Body ground - ACC power supply Ignition switch ACC 11 to 14 V
      MB-30 (ACC) - Body ground - ACC power supply Ignition switch off Below 1 V
      MB-32 (IG) - Body ground - IG power supply Ignition switch ON 11 to 14 V
      MB-32 (IG) - Body ground - IG power supply Ignition 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
      K53-4 (TSW) - Body ground LG - Body ground Luggage compartment door opening switch signal Luggage compartment door opening switch on Below 1 V
      Ignition switch off, all doors closed and luggage compartment door opening switch off Pulse generation
      3D-34 (LGCY) - Body ground LA-GR - Body ground Luggage compartment door courtesy light switch assembly input signal Luggage compartment door open Below 1 V
      Luggage compartment door closed 11 to 14 V
      3D-20 (TR+) - Body ground LA-G - Body ground Luggage compartment door open relay output signal Luggage compartment door opening switch on 11 to 14 V
      Luggage compartment door opening switch off Below 1 V

  2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (w/ Smart Entry and Start System)

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