LUGGAGE COMPARTMENT DOOR OPENER SYSTEM TERMINALS OF ECU


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

    B0077UON26

    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 Engine switch on (ACC) 11 to 14 V
      MB-30 (ACC) - Body ground - ACC power supply Engine switch off Below 1 V
      MB-32 (IG) - Body ground - IG power supply Engine switch on (IG) 11 to 14 V
      MB-32 (IG) - Body ground - IG power supply Engine 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
      O1-5 (TSW) - Body ground P - Body ground Luggage door opening switch signal Luggage door opening switch on Below 1 V
      Engine switch off, all doors closed and luggage door opening switch off Pulse generation
      O2-17 (TMSW) - Body ground LG - Body ground Luggage door opening cancel switch signal Luggage door opening cancel switch on Below 1 V
      Engine switch off, all doors closed and luggage door opening cancel switch off Pulse generation
      4D-16 (LGCY) - Body ground G - 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
      4D-1 (TR+) - Body ground B - Body ground Luggage compartment door lock relay output signal Luggage door opening switch on Below 1 V
      Luggage door opening switch off 11 to 14 V

  2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

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