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Inspection steps

  1. Reading of SSM4 data
    1. On the SSM4, navigate to the [Data monitor] display, and check the computer data. (Refer to DATA MONITOR/ACTIVE TEST )

    SSM4 screen: [Each System] →[Combination Meter] →[Data monitor]

    Item name [Symbol] Description/display range Normal value Remarks
    [Fuel Input]
    [Fuel Input]    		 Input value of fuel sender Display range: 0 to 127.5 [L] Fuel level is displayed If it is abnormal, the fuel sender gauge may be faulty

    Criteria: Data monitor value is almost equal to the value on the fuel receiver gauge.

    NG: Go to Step 2.

    OK: Go to next step

    Replacement of the combination meter ASSY (Refer to REMOVAL )

  2. Unit inspection of the fuel sender gauge ASSY
    1. Remove the fuel sender gauge ASSY. (Refer to REMOVAL )
    2. Perform the unit inspection of the fuel sender gauge ASSY. (Refer to UNIT INSPECTION )

    NG: Replacement of the fuel sender gauge ASSY (Refer to REMOVAL )

    OK: Go to next step

  3. Unit inspection of the fuel suction tube ASSY (with pump and gauge)
    G12589541Courtesy of SUBARU OF AMERICA, INC.
    1. Resistance check
      1. Remove the fuel suction tube ASSY (with pump and gauge).
      2. Measure the resistance between the terminals.
    STANDARD VALUE SPECIFICATION - RESISTANCE

    Inspection terminals Inspection conditions Standard value
    G7-2 - 2 Always Less than 1 Ω
    G7-1 - 1 Always Less than 1 Ω

    NG: Replacement of the fuel suction tube ASSY (with pump and gauge) (Refer to REMOVAL )

    OK: Go to next step

  4. Unit inspection of the fuel sender gauge ASSY NO. 2
    1. Remove the fuel sender gauge ASSY NO. 2.(Refer to REMOVAL )
    2. Perform the unit inspection of the fuel sender gauge ASSY NO. 2.(Refer to UNIT INSPECTION )

    NG: Replacement of the fuel sender gauge ASSY NO. 2 (Refer to REMOVAL )

    OK: Go to next step

  5. Unit inspection of the fuel return vent tube
    G12589542Courtesy of SUBARU OF AMERICA, INC.
    1. Resistance check
      1. Remove the fuel return vent tube.
      2. Measure the resistance between the terminals.
    STANDARD VALUE SPECIFICATION - RESISTANCE

    Inspection terminals Inspection conditions Standard value
    G6-1 - 3 Always Less than 1 Ω
    G6-2 - 2 Always Less than 1 Ω

    NG: Replacement of the fuel return vent tube (Refer to REMOVAL )

    OK: Go to next step

  6. Inspection of the wiring harness and connector (Combination meter ASSY - Fuel suction tube ASSY (with pump and gauge))
    1. Disconnect the connector D7 of the combination meter ASSY and the connector G7 of the fuel suction tube ASSY (with pump and gauge).
    2. Measure the resistance between the terminals.
    STANDARD VALUE SPECIFICATION - RESISTANCE (OPEN CIRCUIT CHECK)

    Inspection terminals (Terminal symbol) Inspection conditions Standard value
    D7-28 (FS-) - G7-2 Always Less than 1 Ω
    STANDARD VALUE SPECIFICATION - RESISTANCE (SHORT CIRCUIT CHECK)

    Inspection terminals (Terminal symbol) Inspection conditions Standard value
    D7-28 (FS-) - Chassis ground Always 10 kΩ or more
    G7-2 - Chassis ground Always 10 kΩ or more

    NG: Repair or replacement of wiring harness or connector

    OK: Go to next step

  7. Inspection of the wiring harness and connector (Fuel suction tube ASSY (with pump and gauge) - Fuel return vent tube)
    1. Disconnect the connector G7 of the fuel suction tube ASSY (with pump and gauge) and the connector G6 of the fuel return vent tube.
    2. Measure the resistance between the terminals.
    STANDARD VALUE SPECIFICATION - RESISTANCE (OPEN CIRCUIT CHECK)

    Inspection terminals Inspection conditions Standard value
    G7-1 - G6-2 Always Less than 1 Ω
    STANDARD VALUE SPECIFICATION - RESISTANCE (SHORT CIRCUIT CHECK)

    Inspection terminals Inspection conditions Standard value
    G7-1 - Chassis ground Always 10 kΩ or more
    G6-2 - Chassis ground Always 10 kΩ or more

    NG: Repair or replacement of wiring harness or connector

    OK: Go to next step

  8. Inspection of the wiring harness and connector (Combination meter ASSY - Fuel return vent tube)
    1. Disconnect the connector D7 of the combination meter ASSY and the connector G6 of the fuel return vent tube.
    2. Measure the resistance between the terminals.
    STANDARD VALUE SPECIFICATION - RESISTANCE (OPEN CIRCUIT CHECK)

    Inspection terminals (Terminal symbol) Inspection conditions Standard value
    D7-27 (L) - G6-1 Always Less than 1 Ω
    STANDARD VALUE SPECIFICATION - RESISTANCE (SHORT CIRCUIT CHECK)

    Inspection terminals (Terminal symbol) Inspection conditions Standard value
    D7-27 (L) - Chassis ground Always 10 kΩ or more
    G6-1 - Chassis ground Always 10 kΩ or more

    NG: Repair or replacement of wiring harness or connector

    OK: Go to next step

    Replacement of the combination meter ASSY (Refer to REMOVAL )

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