METER / GAUGE SYSTEM Fuel Receiver Gauge Display Malfunction

DESCRIPTION


  1. OPERATION

    The combination meter assembly uses the fuel sender gauge assembly to detect the amount of fuel remaining in the fuel tank sub-assembly. The fuel sender gauge assembly has a variable resistor whose resistance changes according to the amount of fuel remaining. The gauge assemblies receive voltage from the combination meter assembly and change the voltage based on the resistance that changes according to the amount of fuel remaining in the fuel tank sub-assembly. The combination meter assembly detects the voltage between each variable resistor and each resistor in the combination meter assembly, and operates the fuel receiver gauge.

  2. FUEL RECEIVER GAUGE READING


    1. During normal driving:

      As the fuel level in the fuel tank sub-assembly rises and falls when driving on a hill or applying brakes, if the fuel sender gauge assembly output value were displayed as-is, the displayed value would fluctuate. For this reason, the averaged output value of the fuel sender gauge assembly is displayed.

    2. During refueling:

      The fuel level in the fuel tank sub-assembly rises rapidly when fuel is added. If the averaging process that is used during normal driving is used in this case, the fuel receiver gauge reading cannot be updated promptly. Therefore, when it is judged that fuel is being added to the vehicle based on the shift lever position and changes in the fuel level, output values from the fuel sender gauge assembly are immediately reflected in the fuel receiver gauge reading. This control is called refueling judgment.

  3. REFUELING JUDGEMENT CONDITIONS

    Note

    Add fuel with the engine switch off to ensure safety and to enable refueling judgment so that an appropriate fuel receiver gauge reading is obtained. If it is necessary to add fuel with the engine switch on (IG), first move the shift lever to P or N. Before driving the vehicle, wait until the fuel level indicated by the fuel receiver gauge stops rising (Approximately 1 minute from E to F).


    1. Normal judgment condition (When normal refueling method is used)

      With the engine switch off, the fuel sender gauge assembly detects a change of 5.0 liters (5.3 US qts, 4.4 Imp. qts) or more in the fuel level.

    2. Other judgment conditions (When other refueling method is used)

      Any of the following conditions is met:


      • With the vehicle and engine stopped and the engine switch on (IG), the fuel sender gauge assembly detects a change of 5.0 liters (5.3 US qts, 4.4 Imp. qts) or more in the fuel level.

      • With the vehicle stopped, the engine running, the engine switch on (IG) and the shift lever in P or N, the fuel sender gauge assembly detects a change of 5.0 liters (5.3 US qts, 4.4 Imp. qts) or more in the fuel level.

      • With the vehicle stopped, the engine running, the engine switch on (IG) and the shift lever in any driving position, the fuel sender gauge assembly detects a change of 15.0 liters (15.9 US qts, 13.2 Imp. qts) or more in the fuel level.

  4. PRECAUTION FOR REFUELING


    1. The fuel sender gauge assembly cannot detect changes in fuel level within certain ranges (around points E and F). Therefore, even though 5.0 liters (5.3 US qts, 4.4 Imp. qts) or more of fuel is added, refueling judgment may not be performed and the fuel receiver gauge reading may not change when fuel level is within such ranges.

    2. It takes approximately 1 minute for the fuel sender gauge assembly to change from E to F. If the vehicle is driven while the displayed fuel level is still rising, the fuel sender gauge assembly will be stopped at that point. The system will then return to normal operation mode, and the displayed fuel level will rise at a rate of approximately 1 minute/L (0.946 minutes/US qt, 1.14 minutes/Imp. qt) when the vehicle is being driven, or approximately 6 minutes/L (5.68 minutes/US qt, 6.82 minutes/Imp. qt) when the vehicle is stopped.

  5. FORCED RESET OF FUEL RECEIVER GAUGE

    When driving at 20 km/h (12 mph) or more, if the output values from the fuel sender gauge assembly are different from the fuel receiver gauge reading by 15.0 liters (15.9 US qts, 13.2 Imp. qts) or more for approximately 5 minutes, output values from both gauge assemblies are immediately reflected in the fuel receiver gauge reading to compensate for a situation when refueling judgment cannot be made.

WIRING DIAGRAM

B006L9NE05
*a Fuel Sender Gauge Assembly
*b Combination Meter Assembly

PROCEDURE


  1. CHECK SYMPTOMS


    1. Ask the customer about the problem symptoms.

      Result
      Result Proceed to
      Malfunction occurs when adding fuel (Even after adding fuel, reading does not increase at all or increases very slowly, etc.) A
      Malfunction occurs during normal driving (The reading does not change, decreases quickly or decreases when the vehicle is not being driven, etc.) (The problem symptom recurs) B
      Malfunction occurs during normal driving (The reading does not change, decreases quickly or decreases when the vehicle is not being driven, etc.) (The problem symptom does not recur) C

    B
    C
    A
  2. PERFORM ACTIVE TEST USING GTS (FUEL METER OPERATION)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter following menus: Body Electrical / Combination Meter / Active Test.

    5. Check the operation by referring to the table below.


      Body Electrical > Combination Meter > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Fuel Meter Operation Fuel receiver gauge OFF, Sender E, Empty, Warning, 1/4, 1/2, 3/4, Full, Sender F -

      Body Electrical > Combination Meter > Active Test
      Tester Display
      Fuel Meter Operation
      OK
      Fuel receiver gauge indication is normal.
      Result
      Proceed to
      OK
      NG

    NG
    OK
  3. CHECK FOR DTCs


    1. Check if SFI system DTCs are output.

      for 2GR-FE: Click here

      for 2AR-FE: Click here


      Powertrain > Engine > Trouble Codes
      Result
      Result Proceed to
      SFI system DTCs are not output. A
      SFI system DTCs are output. (for 2GR-FE) B
      SFI system DTCs are output. (for 2AR-FE) C

    B
    C
    A
  4. CHECK FOR DTCs


    1. Check if vehicle stability control system DTCs are output.

      Click here


      Chassis > ABS/VSC/TRC > Trouble Codes
      Result
      Result Proceed to
      Vehicle stability control system DTCs are not output. A
      Vehicle stability control system DTCs are output. B

    B
    A
  5. CHECK FUEL RECEIVER GAUGE OPERATION BY ADDING FUEL


    1. Record the fuel receiver gauge reading.

    2. If the fuel tank sub-assembly is almost full, drain 20 liters or more of fuel. (This is not necessary when the fuel tank sub-assembly is sufficiently below full.)

    3. Disconnect the cable from the negative (-) battery terminal to reset the fuel receiver gauge.

      Tech Tips

      Check that the engine switch is turned off before disconnecting the cable from the negative (-) battery terminal.

    4. Connect the cable to the negative (-) battery terminal and turn the engine switch on (IG).

    5. Check that the fuel receiver gauge has been reset.

    6. Drive the vehicle at 1.75 km/h or more, then move the shift lever to P and turn the engine switch off.

    7. Add 5.0 liters or more of fuel, turn the engine switch on (IG), and check that the fuel receiver gauge reading increases in proportion to the amount of fuel added.

      Result
      Result Proceed to
      Fuel receiver gauge reading increases in proportion to the amount of fuel added. A
      Fuel receiver gauge reading does not change even when fuel is added. B

    B
    A
  6. INSPECT FUEL TANK ASSEMBLY

    Tech Tips

    Inspect the fuel tank assembly for deformation, foreign matter or an improperly installed fuel receiver gauge, as this may be the cause of the fuel receiver gauge malfunction.


    1. Visually check the fuel tank assembly for any abnormalities.

    2. Check if there is an excessive amount of foreign matter in the fuel tank assembly.

    3. Check the installation condition of the fuel tank assembly, fuel sender gauge assembly.

      Result
      Result Proceed to
      Normal A
      Appearance of the fuel tank assembly is abnormal.(for 2AR-FE) B
      Appearance of the fuel tank assembly is abnormal.(for 2GR-FE) C
      There is an excessive amount of foreign matter in the fuel tank assembly. D
      The fuel tank assembly, fuel sender gauge assembly is not installed correctly. E

    B
    C
    D
    E
    A
  7. READ VALUE USING GTS (FUEL INPUT)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter following menus: Body Electrical / Combination Meter / Data List.

    5. Check the values by referring to the table below.


      Body Electrical > Combination Meter > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Fuel Input Fuel input Min.: 0 L, Max.: 127.5 L Fuel sender input value Unit :Liter

      Body Electrical > Combination Meter > Data List
      Tester Display
      Fuel Input
      Result
      Result Proceed to
      Fuel level data displayed on the GTS is almost the same as the fuel receiver gauge indication. A
      Fuel level data displayed on the GTS differs from the fuel receiver gauge indication. B

    B
    A
  8. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - FUEL SENDER GAUGE ASSEMBLY)


    1. Disconnect the G16 combination meter assembly connector.

    2. Disconnect the K25 fuel sender gauge assembly connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      G16-33 (FR) - K25-1 (FS) Always Below 1 Ω
      G16-34 (FE) - K25-2 (FE) Always Below 1 Ω
      G16-33 (FR) or K25-1 (FS) - Body ground Always 10 kΩ or higher
      G16-34 (FE) or K25-2 (FE) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK
    NG
  9. PERFORM ACTIVE TEST USING GTS (FUEL METER OPERATION)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter following menus: Body Electrical / Combination Meter / Active Test.

    5. Check the operation by referring to the table below.


      Body Electrical > Combination Meter > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Fuel Meter Operation Fuel receiver gauge OFF, Sender E, Empty, Warning, 1/4, 1/2, 3/4, Full, Sender F -

      Body Electrical > Combination Meter > Active Test
      Tester Display
      Fuel Meter Operation
      OK
      Fuel receiver gauge indication is normal.
      Result
      Proceed to
      OK
      NG

    NG
    OK
  10. CHECK FOR DTCs


    1. Check if SFI system DTCs are output.

      for 2GR-FE: Click here

      for 2AR-FE: Click here


      Powertrain > Engine > Trouble Codes
      Result
      Result Proceed to
      SFI system DTCs are not output. A
      SFI system DTCs are output. (for 2GR-FE) B
      SFI system DTCs are output. (for 2AR-FE) C

    B
    C
    A
  11. CHECK FOR DTCs


    1. Check if vehicle stability control system DTCs are output.

      Click here


      Chassis > ABS/VSC/TRC > Trouble Codes
      Result
      Result Proceed to
      Vehicle stability control system DTCs are not output. A
      Vehicle stability control system DTCs are output. B

    B
    A
  12. CHECK FOR DTCs


    1. Check for DTCs.

      Click here


      Body Electrical > Combination Meter > Trouble Codes
      Result
      Result Proceed to
      DTCs are not output. A
      DTCs are output. B

    B
    A
  13. INSPECT FUEL RECEIVER GAUGE


    1. Disconnect the cable from the negative (-) battery terminal to reset the fuel receiver gauge.

      Tech Tips

      Check that the engine switch is turned off before disconnecting the cable from the negative (-) battery terminal.

    2. Connect the cable to the negative (-) battery terminal and turn the engine switch on (IG).

    3. Check if the fuel receiver gauge reading corresponds with the amount of fuel remaining in the fuel tank sub-assembly.

      Result
      Result Proceed to
      Fuel receiver gauge reading corresponds with the amount of fuel remaining in the fuel tank sub-assembly. A
      Fuel receiver gauge reading does not correspond with the amount of fuel remaining in the fuel tank sub-assembly. B

    A
    B
  14. CHECK FOR DTCs


    1. Check if SFI system DTCs are output.

      for 2GR-FE: Click here

      for 2AR-FE: Click here


      Powertrain > Engine > Trouble Codes
      Result
      Result Proceed to
      SFI system DTCs are not output. A
      SFI system DTCs are output. (for 2GR-FE) B
      SFI system DTCs are output. (for 2AR-FE) C

    B
    C
    A
  15. CHECK FOR DTCs


    1. Check if vehicle stability control system DTCs are output.

      Click here


      Chassis > ABS/VSC/TRC > Trouble Codes
      Result
      Result Proceed to
      Vehicle stability control system DTCs are not output. A
      Vehicle stability control system DTCs are output. B

    B
    A
  16. INSPECT FUEL TANK ASSEMBLY

    Tech Tips

    Inspect the fuel tank assembly for deformation, foreign matter or an improperly installed fuel receiver gauge, as this may be the cause of the fuel receiver gauge malfunction.


    1. Visually check the fuel tank assembly for any abnormalities.

    2. Check if there is an excessive amount of foreign matter in the fuel tank assembly.

    3. Check the installation condition of the fuel tank assembly, fuel sender gauge assembly.

      Result
      Result Proceed to
      Normal A
      Appearance of the fuel tank assembly is abnormal.(for 2AR-FE) B
      Appearance of the fuel tank assembly is abnormal.(for 2GR-FE) C
      There is an excessive amount of foreign matter in the fuel tank assembly. D
      The fuel tank assembly, fuel sender gauge assembly is not installed correctly. E

    A
    B
    C
    D
    E