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Inspection steps

  1. SSM3 data reading
    1. Using SSM3, display the [Current Data Display & Save] screen. Check the computer data. (Refer to CURRENT DATA DISPLAY & SAVE / SYSTEM OPERATION CHECK MODE  )
      SSM3 DISPLAY: [EACH SYSTEM CHECK] →[COMBINATION METER] →[CURRENT DATA DISPLAY & SAVE]

      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: 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 FUEL SENDER GAUGE ASSY (FA20) )
    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 FUEL SENDER GAUGE ASSY (FA20) )

      OK: Go to Next Step

  3. Unit inspection of the fuel suction tube ASSY (with pump and gauge)
    1. Resistance check
      1. Remove the fuel suction tube ASSY (with pump and gauge).
      2. Measure the resistance between the terminals.
      RESISTANCE

      Inspection terminals Inspection conditions Standard value
      G7-2 - 2 Always Less than 1 Ω
      G7-1 - 1 Always Less than 1 Ω
      Fig 1: Identifying Fuel Suction Tube Assembly Connectors
      G08557616Courtesy of SUBARU OF AMERICA, INC.

      NG: Replacement of the fuel suction tube ASSY (with pump and gauge) (Refer to FUEL SENDER GAUGE ASSY (FA20) )

      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 FUEL SENDER GAUGE ASSY (FA20) )
    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 FUEL SENDER GAUGE ASSY (FA20) )

      OK: Go to Next Step

  5. Unit inspection of the fuel return vent tube
    1. Resistance check
      1. Remove the fuel return vent tube.
      2. Measure the resistance between the terminals.
      RESISTANCE

      Inspection terminals Inspection conditions Standard value
      G6-1 - 3 Always Less than 1 Ω
      G6-2 - 2 Always Less than 1 Ω
      Fig 2: Identifying Fuel Return Vent Tube Connectors
      G08557617Courtesy of SUBARU OF AMERICA, INC.

      NG: Replacement of the fuel return vent tube (refer to FUEL SENDER GAUGE ASSY (FA20) )

      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.
      RESISTANCE (OPEN CIRCUIT CHECK)

      Inspection terminals (Terminal symbol) Inspection conditions Standard value
      D7-28 (FS-) - G7-2 Always Less than 1 Ω
      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.
      RESISTANCE (OPEN CIRCUIT CHECK)

      Inspection terminals Inspection conditions Standard value
      G7-1 - G6-2 Always Less than 1 Ω
      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.
      RESISTANCE (OPEN CIRCUIT CHECK)

      Inspection terminals (Terminal symbol) Inspection conditions Standard value
      D7-27 (L) - G6-1 Always Less than 1 Ω
      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: Replacement of the combination meter ASSY (refer to REMOVAL  )

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