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Home >> Lexus >> 2021 >> LC 500 2D Convertible >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter / Gauge System - Diagnostic Codes, Symptom Tests & Circuit Tests (Convertible) >> Meter / Gauge System >> Fuel Receiver Gauge Display Malfunction [07/2020 - 05/2023] >> Procedure

Fuel Receiver Gauge Display Malfunction [07/2020 - 05/2023]: 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

    Result: 

    B 

    See step  10

    Result: 

    C 

    See step  14

    Result: 

    A 

    See step  2

  2. CHECK FOR DTC (SFI SYSTEM) 
    1. Check if SFI system DTCs are output.

      Refer to DTC CHECK / CLEAR [07/2020 - 05/2023]

      Powertrain > Engine > Trouble Codes 

      Result

      Result Proceed to
      SFI system DTCs are not output. A
      SFI system DTCs are output. B

    Result: 

    B 

    GO TO SFI SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [07/2020 - ] 

    Result: 

    A 

    See step  3

  3. CHECK FOR DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM) 
    1. Check if electronically controlled brake system DTCs are output.

      Refer to DTC CHECK / CLEAR [07/2020 - ]

      Chassis > ABS/VSC/TRC > Trouble Codes 

      Result

      Result Proceed to
      Electronically controlled brake system DTCs are not output. A
      Electronically controlled brake system DTCs are output. B

    Result: 

    B 

    GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [07/2020 - ] 

    Result: 

    A 

    See step  4

  4. CHECK FUEL RECEIVER GAUGE OPERATION BY ADDING FUEL 
    1. Record the fuel receiver gauge reading.
    2. If the fuel tank assembly is almost full, drain 20 liters or more of fuel. (This is not necessary when the fuel tank assembly is sufficiently below full.)
    3. Disconnect the cable from the negative (-) battery terminal to reset the fuel receiver gauge.

      HINT: 

      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

    Result: 

    B 

    See step  6

    Result: 

    A 

    See step  5

  5. INSPECT FUEL TANK ASSEMBLY 

    HINT: 

    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. B
      There is an excessive amount of foreign matter in the fuel tank assembly. C
      The fuel tank assembly, fuel sender gauge assembly is not installed correctly. D

    Result: 

    B 

    REPLACE FUEL TANK ASSEMBLY. Refer to  REMOVAL [07/2020 - 05/2023] 

    Result: 

    C 

    CLEAN INSIDE OF FUEL TANK ASSEMBLY 

    Result: 

    D 

    INSTALL FUEL TANK ASSEMBLY, FUEL SENDER GAUGE ASSEMBLY CORRECTLY 

    Result: 

    A 

    See step  6

  6. READ VALUE USING TECHSTREAM (FUEL INPUT, SUB FUEL INPUT) 
    1. Using the Techstream, read the Data List.

      Refer to DATA LIST / ACTIVE TEST [07/2020 - ]

      Body Electrical > Combination Meter > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Fuel Input Fuel input Min.: 0, Max.: 127.5
      • Fuel receiver gauge indicates

        F: 80.8 L

      • Fuel receiver gauge indicates

        3/4: 51.6 L

      • Fuel receiver gauge indicates

        1/4: 28.8 L

      • Fuel receiver gauge indicates

        E: 4.6 L

      		 Unit :Liter
      Sub Fuel Input Sub fuel input Min.: 0, Max.: 127.5
      • Fuel receiver gauge indicates

        F: 80.8 L

      • Fuel receiver gauge indicates

        3/4: 51.6 L

      • Fuel receiver gauge indicates

        1/4: 28.8 L

      • Fuel receiver gauge indicates

        E: 4.6 L

      		 Unit :Liter

      Body Electrical > Combination Meter > Data List 

      Tester Display
      Fuel Input
      Sub Fuel Input

      OK

      Fuel level data displayed on the Techstream is almost the same as the fuel receiver gauge indication.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [07/2020 - ] 

    Result: 

    OK 

    See step  7

  7. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - FUEL SUCTION TUBE WITH PUMP AND GAUGE ASSEMBLY, NO. 2 FUEL SENDER GAUGE ASSEMBLY) 
    1. Disconnect the P25 combination meter assembly connector.
    2. Disconnect the X17 fuel suction tube with pump and gauge assembly connector.
    3. Disconnect the X32 No. 2 fuel sender gauge assembly connector.
    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      X17-3 (FR) - P25-12 (FR) Always Below 1 Ω
      X17-2 (FE) - P25-13 (FE&B) Always Below 1 Ω
      X17-1 (FV) - P25-14 (FV) Always Below 1 Ω
      P25-12 (FR) - Other terminals and body ground Always 10 kΩ or higher
      P25-13 (FE&B) - Other terminals and body ground Always 10 kΩ or higher
      P25-14 (FV) - Other terminals and body ground Always 10 kΩ or higher
      X32-3 (FR2) - P25-27 (FR) Always Below 1 Ω
      X32-2 (FE2) - P25-28 (FE) Always Below 1 Ω
      X32-1 (FV2) - P25-18 (FV) Always Below 1 Ω
      P25-27 (FR) - Other terminals and body ground Always 10 kΩ or higher
      P25-28 (FE) - Other terminals and body ground Always 10 kΩ or higher
      P25-18 (FV) - Other terminals and body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  8

  8. INSPECT FUEL SUCTION PLATE 
    1. Remove the fuel suction plate sub-assembly.

      Refer to REMOVAL [07/2020 - 05/2023]

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      X17-1 (FV) - A-3 Always Below 1 Ω
      X17-2 (FE) - A-2 Always Below 1 Ω
      X17-3 (FR) - A-1 Always Below 1 Ω
      GTY779040Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Fuel Suction Tube with Pump and Gauge Assembly)

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE FUEL SUCTION PLATE. Refer to  REMOVAL [07/2020 - 05/2023] 

    Result: 

    OK 

    See step  9

  9. INSPECT FUEL SENDER GAUGE ASSEMBLY 
    1. Remove the fuel sender gauge assembly.

      Refer to REMOVAL [07/2020 - 05/2023]

    2. Inspect the fuel sender gauge assembly.

      Refer to INSPECTION [07/2020 - ]

      Result

      Result Proceed to
      OK A
      NG (for Fuel suction tube with pump and gauge assembly) B
      NG (for No. 2 fuel sender gauge assembly) C

    Result: 

    A 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [07/2020 - ] 

    Result: 

    B 

    REPLACE FUEL SENDER GAUGE ASSEMBLY. Refer to  REMOVAL [07/2020 - 05/2023] 

    Result: 

    C 

    REPLACE NO. 2 FUEL SENDER GAUGE ASSEMBLY. Refer to  REMOVAL [07/2020 - 05/2023] 

  10. CHECK FOR DTC (SFI SYSTEM) 
    1. Check if SFI system DTCs are output.

      Refer to DTC CHECK / CLEAR [07/2020 - 05/2023]

      Powertrain > Engine > Trouble Codes 

      Result

      Result Proceed to
      SFI system DTCs are not output. A
      SFI system DTCs are output. B

    Result: 

    B 

    GO TO SFI SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [07/2020 - ] 

    Result: 

    A 

    See step  11

  11. CHECK FOR DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM) 
    1. Check if electronically controlled brake system DTCs are output.

      Refer to DTC CHECK / CLEAR [07/2020 - ]

      Chassis > ABS/VSC/TRC > Trouble Codes 

      Result

      Result Proceed to
      Electronically controlled brake system DTCs are not output. A
      Electronically controlled brake system DTCs are output. B

    Result: 

    B 

    GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [07/2020 - ] 

    Result: 

    A 

    See step  12

  12. CHECK FOR DTC 
    1. Check for DTCs.

      Refer to DTC CHECK / CLEAR [07/2020 - ]

      Body Electrical > Combination Meter > Trouble Codes 

      Result

      Result Proceed to
      OK A
      NG (B1500 are output.) B
      NG (B1501 are output.) C

    Result: 

    B 

    GO TO DTC B1500. Refer to  DTC B1500: Fuel Sender Open Detected [07/2020 - 05/2023]  

    Result: 

    C 

    GO TO DTC B1501. Refer to  DTC B1501: Sub Fuel Sender Open Detected [07/2020 - ]  

    Result: 

    A 

    See step  13

  13. INSPECT FUEL RECEIVER GAUGE 
    1. Disconnect the cable from the negative (-) battery terminal to reset the fuel receiver gauge.

      HINT: 

      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 assembly.

      Result

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

    Result: 

    A 

    END 

    Result: 

    B 

    See step  14

  14. CHECK FOR DTC (SFI SYSTEM) 
    1. Check if SFI system DTCs are output.

      Refer to DTC CHECK / CLEAR [07/2020 - 05/2023]

      Powertrain > Engine > Trouble Codes 

      Result

      Result Proceed to
      SFI system DTCs are not output. A
      SFI system DTCs are output. B

    Result: 

    B 

    GO TO SFI SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [07/2020 - ] 

    Result: 

    A 

    See step  15

  15. CHECK FOR DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM) 
    1. Check if electronically controlled brake system DTCs are output.

      Refer to DTC CHECK / CLEAR [07/2020 - ]

      Chassis > ABS/VSC/TRC > Trouble Codes 

      Result

      Result Proceed to
      Electronically controlled brake system DTCs are not output. A
      Electronically controlled brake system DTCs are output. B

    Result: 

    B 

    GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [07/2020 - ] 

    Result: 

    A 

    See step  16

  16. INSPECT FUEL TANK ASSEMBLY 

    HINT: 

    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 and No. 2 fuel sender gauge assembly.

      Result

      Result Proceed to
      Normal A
      Appearance of the fuel tank assembly is abnormal. B
      There is an excessive amount of foreign matter in the fuel tank assembly. C
      The fuel tank assembly, fuel sender gauge assembly is not installed correctly. D

    Result: 

    A 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [07/2020 - ] 

    Result: 

    B 

    REPLACE FUEL TANK ASSEMBLY. Refer to  REMOVAL [07/2020 - 05/2023] 

    Result: 

    C 

    CLEAN INSIDE OF FUEL TANK ASSEMBLY 

    Result: 

    D 

    INSTALL FUEL TANK ASSEMBLY, FUEL SENDER GAUGE ASSEMBLY CORRECTLY 

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