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ECM Terminal Arrangement

  1. Instrument panel junction block ASSY, main body ECM (Network gateway computer)
    G12594957Courtesy of SUBARU OF AMERICA, INC.
    1. Inspection of the instrument panel junction block ASSY and the main body ECM (network gateway computer)
      1. Measure the voltage between the terminals.

        Standard value

        STANDARD VALUE SPECIFICATION

        Terminal No. (Terminal symbol) Inspection conditions Standard value
        A73-24 ←→chassis ground IG ON 11 to 14 V
        D5-22 (ACC) ←→chassis ground(1) ACC ON 11 to 14 V
        NOTE:
        (1) When there is a smart entry & start system
        NOTE: If it is outside the standard values, the vehicle is defective.
  2. Heater control SUB-ASSY (Rear window defogger switch) (except for automatic air conditioning system)
    1. Disconnect the connector D22 of the heater control SUB-ASSY (Rear window defogger switch).
    2. Measure the voltage and resistance between terminals.
      G12594958Courtesy of SUBARU OF AMERICA, INC.

      Standard value

      STANDARD VALUE SPECIFICATION

      Terminal No. (Terminal symbol) Inspection conditions Standard value
      D22-2 (IND+) ←→D22-4 (RDEF-) Always 11 to 14 V
      D22-4 (RDEF-) ←→chassis ground Always Less than 1 Ω
    3. Connect the connector D22 of the heater control SUB-ASSY (Rear window defogger switch).
    4. Measure the voltage between the terminals.

      Standard value

      STANDARD VALUE SPECIFICATION

      Terminal No. (Terminal symbol) Inspection conditions Standard value
      D22-6 (IND+) ←→D22-4 (RDEF-) IG ON
      Defogger switch OFF →ON      		 11 to 14 V →1 V or less
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