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Home >> Lexus >> 2021 >> LC 500 2D Coupe >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Luggage Compartment Door Opener System - Diagnostics & Symptom Tests (Coupe) >> Luggage Compartment Door Opener System >> Luggage Compartment Door Opener does not Operate Using Any Operation [03/2017 - 05/2023] >> Procedure

Luggage Compartment Door Opener does not Operate Using Any Operation [03/2017 - 05/2023]: Procedure

  1. CHECK POWER DOOR LOCK CONTROL SYSTEM 
    1. Check power door lock control system operation.

      Refer to OPERATION CHECK [03/2017 - ]

      OK

      Power door lock control system is normal.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    GO TO POWER DOOR LOCK CONTROL SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [03/2017 - ] 

    Result: 

    OK 

    See step  2

  2. CHECK WIRELESS DOOR LOCK CONTROL SYSTEM 
    1. Check wireless door lock control system operation.

      Refer to OPERATION CHECK [03/2017 - ]

      OK

      Wireless door lock control system is normal.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    GO TO WIRELESS DOOR LOCK CONTROL SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [03/2017 - ] 

    Result: 

    OK 

    See step  3

  3. PERFORM ACTIVE TEST USING TECHSTREAM 
    1. Perform the Active Test according to the display on the Techstream.

      Refer to DATA LIST / ACTIVE TEST [03/2017 - ] 

      Body Electrical > Main Body > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Trunk and Back-Door Open Operate luggage compartment door lock assembly latch release OFF or ON -

      Body Electrical > Main Body > Active Test 

      Tester Display
      Trunk and Back-Door Open

      OK

      Luggage compartment door lock assembly latch release motor operates normally.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  5

    Result: 

    OK 

    See step  4

  4. READ VALUE USING TECHSTREAM 
    1. Read the Data List according to the display on the Techstream.

      Refer to DATA LIST / ACTIVE TEST [03/2017 - ] 

      Body Electrical > Main Body > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Trunk Main SW Luggage door opening cancel switch assembly signal OFF or ON OFF: Luggage door opening cancel switch assembly off
      ON: Luggage door opening cancel switch assembly on      		 -
      Luggage Courtesy SW Luggage compartment door lock courtesy switch signal OFF or ON OFF: Luggage compartment door courtesy switch off
      ON: Luggage compartment door courtesy switch on      		 -

      Body Electrical > Main Body > Data List 

      Tester Display
      Trunk Main SW
      Luggage Courtesy SW

      Result

      Result Proceed to
      The Data List changes according to each operation A
      The Data List "Trunk Main SW" does not change according to the luggage door opening cancel switch assembly being operated. B
      The Data List "Luggage Courtesy SW" does not change according to the luggage compartment door opening or closing. C

    Result: 

    A 

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [03/2017 - 05/2023] 

    Result: 

    B 

    See step  11

    Result: 

    C 

    See step  13

  5. INSPECT LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY 
    1. Remove the luggage compartment door lock assembly.

      Refer to REMOVAL [03/2017 - ]

    2. Inspect the luggage compartment door lock assembly.

      Refer to INSPECTION [03/2017 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY. Refer to  REMOVAL [03/2017 - ] 

    Result: 

    OK 

    See step  6

  6. INSPECT LUGGAGE OPENER RELAY (TRUNK OPN) 
    1. Remove the luggage opener relay (TRUNK OPN) from the No. 2 luggage room relay block.
    2. Inspect the luggage opener relay (TRUNK OPN).

      Refer to INSPECTION [03/2017 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE LUGGAGE OPENER RELAY (TRUNK OPN) 

    Result: 

    OK 

    See step  7

  7. CHECK HARNESS AND CONNECTOR (LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY - LUGGAGE OPENER RELAY [TRUNK OPN] AND BODY GROUND) 
    1. Disconnect the X72 luggage compartment door lock assembly connector.
    2. Remove the luggage opener relay (TRUNK OPN) from the No. 2 luggage room relay block.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      X72-3 (B) - Luggage opener relay (TRUNK OPN) terminal 3 Always Below 1 Ω
      X72-1 (E) - Body ground Always Below 1 Ω
      X72-3 (B) or Luggage opener relay (TRUNK OPN) terminal 3 - 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. CHECK HARNESS AND CONNECTOR (LUGGAGE OPENER RELAY [TRUNK OPN] - BATTERY AND BODY GROUND) 
    1. Remove the luggage opener relay (TRUNK OPN) from the No. 2 luggage room relay block.
      GTY805703Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Luggage Opener Relay [TRUNK OPN])
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      Luggage opener relay (TRUNK OPN) terminal 4 - Body ground Always Below 1 Ω
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      Luggage opener relay (TRUNK OPN) terminal 2 - Body ground Always 11 to 14 V
      Luggage opener relay (TRUNK OPN) terminal 5 - Body ground Always 11 to 14 V

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  9

  9. CHECK HARNESS AND CONNECTOR (LUGGAGE OPENER RELAY [TRUNK OPN] - DRIVER SIDE JUNCTION BLOCK ASSEMBLY) 
    1. Remove the luggage opener relay (TRUNK OPN) from the No. 2 luggage room relay block.
    2. Disconnect the 3C driver side junction block assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      Luggage opener relay (TRUNK OPN) terminal 1 - 3C-32 Always Below 1 Ω
      Luggage opener relay (TRUNK OPN) terminal 1 or 3C-32 - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  10

  10. INSPECT DRIVER SIDE JUNCTION BLOCK ASSEMBLY 
    1. Remove the driver side junction block assembly.
      GTY808341Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Refer to REMOVAL [03/2017 - 05/2023]

    2. Remove the main body ECU (multiplex network body ECU) from driver side junction block assembly.

      Refer to REMOVAL [03/2017 - 05/2023]

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      3C-32 - A-6(TR+) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [03/2017 - 05/2023] 

    Result: 

    NG 

    REPLACE DRIVER SIDE JUNCTION BLOCK ASSEMBLY. Refer to  REMOVAL [03/2017 - 05/2023] 

  11. INSPECT LUGGAGE DOOR OPENING CANCEL SWITCH ASSEMBLY 
    1. Remove the luggage door opening cancel switch assembly.

      Refer to REMOVAL [03/2017 - 05/2023]

    2. Inspect the luggage door opening cancel switch assembly.

      Refer to INSPECTION [03/2017 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE LUGGAGE DOOR OPENING CANCEL SWITCH ASSEMBLY. Refer to  REMOVAL [03/2017 - 05/2023] 

    Result: 

    OK 

    See step  12

  12. CHECK HARNESS AND CONNECTOR (LUGGAGE DOOR OPENING CANCEL SWITCH ASSEMBLY - MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU] AND BODY GROUND) 
    1. Disconnect the P67 luggage door opening cancel switch assembly connector.
    2. Disconnect the P7 main body ECU (multiplex network body ECU) connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      P67-2 (B) - P7-27 (TMSW) Always Below 1 Ω
      P67-1 (L) - Body ground Always Below 1 Ω
      P67-2 (B) or P7-27 (TMSW) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [03/2017 - 05/2023] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  13. INSPECT LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY 
    1. Remove the luggage compartment door lock assembly.

      Refer to REMOVAL [03/2017 - ]

    2. Inspect the luggage compartment door lock assembly.

      Refer to INSPECTION [03/2017 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY. Refer to  REMOVAL [03/2017 - ] 

    Result: 

    OK 

    See step  14

  14. CHECK HARNESS AND CONNECTOR (LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY - DRIVER SIDE JUNCTION BLOCK ASSEMBLY) 
    1. Disconnect the X72 luggage compartment door lock assembly connector.
    2. Disconnect the 3D driver side junction block assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      X72-4 (D+) - 3D-27 Always Below 1 Ω
      X72-4 (D+) or 3D-27 - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  15

  15. INSPECT DRIVER SIDE JUNCTION BLOCK ASSEMBLY 
    1. Remove the driver side junction block assembly.

      Refer to REMOVAL [03/2017 - 05/2023]

      GTY831576Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the main body ECU (multiplex network body ECU) from the driver side junction block assembly.

      Refer to REMOVAL [03/2017 - 05/2023]

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      3D-27 - A-4 (LGCY) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [03/2017 - 05/2023] 

    Result: 

    NG 

    REPLACE DRIVER SIDE JUNCTION BLOCK ASSEMBLY. Refer to  REMOVAL [03/2017 - 05/2023] 

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