FUEL LID OPENER SYSTEM(w/ Canister Pump Module) TERMINALS OF ECU


  1. CHECK ECM

    B004Y15N19

    Tech Tips

    The standard voltage, resistance and waveform between each pair of the ECM terminals is shown in the table below. The appropriate conditions for checking each pair of the terminals is also indicated. The result of checks should be compared with the standard voltage, resistance and waveform for each pair of the terminals as displayed in the Specified Condition column. The illustration above can be used as a reference to identify the ECM terminal locations.

    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    A56-32 (FUEL) - D1-53 (E1) B - W-B Trunk and fuel switch assembly (fuel lid opener switch) signal Trunk and fuel switch assembly (fuel lid opener switch) pressed Below 1 V
    Trunk and fuel switch assembly (fuel lid opener switch) not pressed 11 to 14 V
    A56-37 (LIDO) - D1-53 (E1) B - W-B Fuel lid with motor lock assembly (fuel lid courtesy switch) signal Fuel lid closed Below 1 V
    Fuel lid open 11 to 14 V
    A56-59 (LSTM) - D1-53 (E1) GR - W-B Fuel lid operation signal for combination meter assembly Multi-information display displaying "Please Wait Now Opening"

    Pulse generation

    (see waveform 1)
    Multi-information display displaying "Close Fuel Lid"

    Pulse generation

    (see waveform 2)
    Multi-information display displaying "Refuel Ready"

    Pulse generation

    (see waveform 3)
    Power switch on (IG) 11 to 14 V
    D1-32 (FREL) - D1-53 (E1) B - W-B Fuel lid with motor lock assembly operation signal Fuel lid with motor lock assembly operating Below 1 V
    Fuel lid with motor lock assembly not operating 11 to 14 V

    1. B004RQWE03

      Using an oscilloscope, check waveform 1.

      Waveform 1 (Reference)
      Item Content
      Terminal No. (Symbol) A56-59 (LSTM) - D1-53 (E1)
      Tool Setting 5 V/DIV., 20 ms./DIV.
      Condition Multi-information display displaying "Please Wait Now Opening"
    2. B004S01E02

      Using an oscilloscope, check waveform 2.

      Waveform 2 (Reference)
      Item Content
      Terminal No. (Symbol) A56-59 (LSTM) - D1-53 (E1)
      Tool Setting 5 V/DIV., 20 ms./DIV.
      Condition Multi-information display displaying "Close Fuel Lid"
    3. B004W62E02

      Using an oscilloscope, check waveform 3.

      Waveform 3 (Reference)
      Item Content
      Terminal No. (Symbol) A56-59 (LSTM) - D1-53 (E1)
      Tool Setting 5 V/DIV., 20 ms./DIV.
      Condition Multi-information display displaying "Refuel Ready"

  2. CHECK COMBINATION METER ASSEMBLY


    1. Disconnect the G34 and G35 combination meter assembly connectors.

      B004U38N10

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

      Terminal No. Wiring Color Terminal Description Condition Specified Condition
      G34-21 (IG+) - Body ground LA-G - Body ground Power switch signal Power switch off Below 1 V
      Power switch on (IG) 11 to 14 V
      G34-22 (B) - Body ground LA-B - Body ground Auxiliary battery Power switch off 11 to 14 V
      G35-1 (B) - Body ground LA-P - Body ground Auxiliary battery Power switch off 11 to 14 V
      G34-40 (EP) - Body ground LA - Body ground Ground Always Below 1 Ω

    3. Reconnect the G34 and G35 combination meter assembly connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      G34-11 (LST1) - Body ground GR - Body ground Fuel lid operation signal for combination meter assembly Multi-information display displaying "Please Wait Now Opening"

      Pulse generation

      (see waveform 1)
      Multi-information display displaying "Close Fuel Lid"

      Pulse generation

      (see waveform 2)
      Multi-information display displaying "Refuel Ready"

      Pulse generation

      (see waveform 3)
      Power switch on (IG) 11 to 14 V

      1. B004RQWE03

        Using an oscilloscope, check waveform 1.

        Waveform 1 (Reference)
        Item Content
        Terminal No. (Symbol) G34-11 (LST1) - Body ground
        Tool Setting 5 V/DIV., 20 ms./DIV.
        Condition Multi-information display displaying "Please Wait Now Opening"
      2. B004S01E02

        Using an oscilloscope, check waveform 2.

        Waveform 2 (Reference)
        Item Content
        Terminal No. (Symbol) G34-11 (LST1) - Body ground
        Tool Setting 5 V/DIV., 20 ms./DIV.
        Condition Multi-information display displaying "Close Fuel Lid"
      3. B004W62E02

        Using an oscilloscope, check waveform 3.

        Waveform 3 (Reference)
        Item Content
        Terminal No. (Symbol) G34-11 (LST1) - Body ground
        Tool Setting 5 V/DIV., 20 ms./DIV.
        Condition Multi-information display displaying "Refuel Ready"