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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 82 (Fuel Lid Opener System (HEV) - Diagnostics & Symptom Tests) >> FUEL LID OPENER SYSTEM (for HV Model) >> Fuel Lid Opener does not Operate [12/2019 - 11/2023] >> Procedure

Fuel Lid Opener does not Operate [12/2019 - 11/2023]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK FOR DTCs (HEALTH CHECK) 
    1. Check DTCs.

      Result

      Result Proceed to
      No DTCs are output. A
      DTCs are output. B

    Result: 

    B 

    GO TO DTC CHART 

    Result: 

    A 

    See step  2

  2. CHECK EVAPORATIVE EMISSION CONTROL SYSTEM 
    1. Perform the Evaporative System Check using the GTS (Automatic Mode). Refer to "CONFIRMATION DRIVING PATTERN" of P0450-11.

      Refer to DTC P0450-11: Evaporative Emission System Pressure Sensor/Switch Circuit Short to Ground; DTC P0450-15: Evaporative Emission System Pressure Sensor/Switch Circuit Short to Battery or Open; DTC P0450-2F: Evaporative Emission System Pressure Sensor/Switch Signal Erratic [12/2019 - 10/2022] , or refer to DTC P0450-11: Evaporative Emission System Pressure Sensor/Switch Circuit Short to Ground; DTC P0450-15: Evaporative Emission System Pressure Sensor/Switch Circuit Short to Battery or Open; DTC P0450-2F: Evaporative Emission System Pressure Sensor/Switch Signal Erratic [10/2022 - 11/2023]

    2. Check for DTCs.

      Powertrain > Engine > Trouble Codes 

      OK

      Evaporative emission control system DTCs are not output.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    GO TO SFI SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ] 

    Result: 

    OK 

    See step  3

  3. PERFORM ACTIVE TEST USING GTS (ACTIVATE THE FUEL FILLER OPENER) 
    1. Perform the Active Test according to the display on the GTS.

      Powertrain > Engine > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Activate the Fuel Filler Opener Fuel lid lock with motor assembly OFF/ON -

      Powertrain > Engine > Active Test 

      Tester Display
      Activate the Fuel Filler Opener

      OK

      The fuel lid lock with motor assembly operates normally.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  10

    Result: 

    OK 

    See step  4

  4. READ VALUE USING GTS (FUEL LID SW) 
    1. Read the Data List according to the display on the GTS.

      Powertrain > Engine > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Fuel Lid SW Fuel lid opener switch status Close or Open Close: Fuel lid opener switch not pushed
      Open: Fuel lid opener switch pushed      		 -

      Powertrain > Engine > Data List 

      Tester Display
      Fuel Lid SW

      OK

      The GTS display changes correctly in response to the operation of the fuel lid opener switch.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  8

    Result: 

    OK 

    See step  5

  5. READ VALUE USING GTS (FUEL LID SENSOR SW) 
    1. Read the Data List according to the display on the GTS.

      Powertrain > Engine > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Fuel Lid Sensor SW Fuel lid courtesy switch status Close or Open Close: Fuel lid closed
      Open: Fuel lid open      		 -

      Powertrain > Engine > Data List 

      Tester Display
      Fuel Lid Sensor SW

      OK

      The GTS display changes correctly in response to the operation of the fuel lid courtesy switch (fuel lid lock with motor assembly).

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE ECM. Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023] 

    Result: 

    NG 

    See step  6

  6. INSPECT FUEL LID LOCK WITH MOTOR ASSEMBLY (FUEL LID COURTESY SWITCH) 

    Refer to INSPECTION [12/2019 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE FUEL LID LOCK WITH MOTOR ASSEMBLY. Refer to  REMOVAL [12/2019 - 09/2020]  , or refer to  REMOVAL [09/2020 - ] 

    Result: 

    OK 

    See step  7

  7. CHECK HARNESS AND CONNECTOR (FUEL LID LOCK WITH MOTOR ASSEMBLY - ECM) 
    1. Disconnect the A27 ECM connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      M46-3 (B) - A27-31 (LIDO) Always Below 1 Ω
      M46-3 (B) or A27-31 (LIDO) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE ECM. Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  8. INSPECT FUEL LID OPENER SWITCH 

    Refer to INSPECTION [12/2019 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE FUEL LID OPENER SWITCH. Refer to  REMOVAL [12/2019 - ] 

    Result: 

    OK 

    See step  9

  9. CHECK HARNESS AND CONNECTOR (FUEL LID OPENER SWITCH - ECM AND BODY GROUND) 
    1. Disconnect the A27 ECM connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H34-5 (IG) - A27-38 (FUEL) Always Below 1 Ω
      H34-2 (E) - Body ground Always Below 1 Ω
      H34-5 (IG) or A27-38 (FUEL) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE ECM. Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  10. INSPECT FUEL LID LOCK WITH MOTOR ASSEMBLY 

    Refer to INSPECTION [12/2019 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE FUEL LID LOCK WITH MOTOR ASSEMBLY. Refer to  REMOVAL [12/2019 - 09/2020]  , or refer to  REMOVAL [09/2020 - ] 

    Result: 

    OK 

    See step  11

  11. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - AUXILIARY BATTERY) 
    1. Disconnect the 4C instrument panel junction block assembly connector.
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      4C-7 - Body ground Ignition switch off 11 to 14 V
      4C-30 - Body ground Ignition switch off 11 to 14 V
      GTY869411Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Instrument Panel Junction Block Assembly)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  12

  12. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - ECM) 
    1. Disconnect the A27 ECM connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      4C-20 - A27-44 (FREL) Always Below 1 Ω
      4C-20 or A27-44 (FREL) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  13

  13. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - FUEL LID LOCK WITH MOTOR ASSEMBLY) 
    1. Disconnect the 4D instrument panel junction block assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      4D-28 - M46-1 (B) Always Below 1 Ω
      4D-28 or M46-1 (B) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  14

  14. REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 
    1. Replace the instrument panel junction block assembly.

      Refer to REMOVAL [12/2019 - 10/2022] , or refer to REMOVAL [10/2022 - 11/2023]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  15

  15. CHECK FUEL LID OPEN OPERATION 
    1. Check that the fuel lid can be opened.

      Refer to OPERATION CHECK [12/2019 - ] 

      OK

      The fuel lid can be opened.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY WAS DEFECTIVE) 

    Result: 

    NG 

    REPLACE ECM. Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023] 

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