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Terminals Of ECU

  1. CHECK COMBINATION METER ASSEMBLY
    1. Disconnect the D7 combination meter assembly connector.
      Fig 1: Identifying D7 Combination Meter Assembly Connector
      G08557820Courtesy of SUBARU OF AMERICA, INC.
    2. Measure the resistance and voltage according to the value(s) in the table below.
      NOTE: Measure the values on the wire harness side with the connector disconnected.
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      D7-1 (+B)- Body ground R-W - Body ground Combination meter +B line Always 11 to 14 V
      D7-2 (IG+) - Body ground W-G - Body ground Combination meter IG line Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      D7-20 (ES1) - Body ground B-Y - Body ground Ground Always Below 1 Ω
      D7-37 (DBKL) - Body ground R-B - Body ground Driver seat belt signal Driver seat belt fastened 10 kΩ or higher
      Driver seat belt unfastened Below 1 Ω
      D7-40 (ES2) - Body ground B-Y - Body ground Ground Always Below 1 Ω

      If the result is not as specified, there may be a malfunction in the wire harness.

    3. Reconnect the D7 combination meter assembly connector.
    4. Measure the voltage according to the value(s) in the table below.
      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      D7-13 (P/SB) - Body ground BR-R - Body ground Front passenger seat belt warning signal Front passenger seat occupied, seat belt fastened Below 1 V
      Front passenger seat occupied, seat belt unfastened 11 to 14 V

      If the result is not as specified, the combination meter assembly may have a malfunction.

  2. CHECK Airbag control module
    Fig 2: Identifying Airbag Control Module Connector Terminals
    G08557821Courtesy of SUBARU OF AMERICA, INC.
    Terminal No. Terminal Symbol Destination
    G1-12 SVC Occupant detection ECU
    G1-13 SGD Occupant detection ECU
  3. CHECK OCCUPANT DETECTION ECU
    1. Measure the voltage according to the value(s) in the table below.
      Fig 3: Identifying Occupant Detection ECU Terminals
      G08557822Courtesy of SUBARU OF AMERICA, INC.
      Tester Connection Wiring Color Terminal Description Condition Specification
      G2-1 - Body ground G - Body ground Occupant detection ECU IG line Ignition switch ON 11 to 14 V
      G2-2 - G2-3 Y-G - Y Airbag control module communication line Ignition switch ON Pulse generation

      If the result is not as specified, the occupant detection ECU may have a malfunction.

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