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Home >> Toyota >> 2021 >> Mirai XLE >> Repair and Diagnosis >> Body & Frame >> Exterior Body Panels >> Luggage Compartment Door Opener System - Diagnostics & Symptom Tests >> Luggage Compartment Door Opener System >> Luggage Compartment Door Opener does not Operate Using Any Operation [12/2023 - ] >> Procedure

Luggage Compartment Door Opener does not Operate Using Any Operation [12/2023 - ]: Procedure

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

      w/ Front LiDAR Sensor:

      Refer to OPERATION CHECK [12/2023 - ]

      w/o Front LiDAR Sensor:

      Refer to OPERATION CHECK [12/2023 - ]

      OK

      Power door lock control system is normal.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    GO TO POWER DOOR LOCK CONTROL SYSTEM 

    w/ Front LiDAR Sensor:

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2023 - ]

    w/o Front LiDAR Sensor:

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2023 - ]

    Result: 

    OK 

    See step  2

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

      w/ Front LiDAR Sensor:

      Refer to OPERATION CHECK [12/2023 - ]

      w/o Front LiDAR Sensor:

      Refer to OPERATION CHECK [12/2023 - ]

      OK

      Wireless door lock control system is normal.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    GO TO WIRELESS DOOR LOCK CONTROL SYSTEM 

    w/ Front LiDAR Sensor:

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2023 - ]

    w/o Front LiDAR Sensor:

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2023 - ]

    Result: 

    OK 

    See step  3

  3. CHECK VEHICLE TYPE 
    1. Check vehicle condition.

      Result

      Result  Proceed to 
      w/ Front LiDAR Sensor A
      w/o Front LiDAR Sensor B

    Result: 

    B 

    See step  14

    Result: 

    A 

    See step  4

  4. PERFORM ACTIVE TEST USING GTS 
    1. Perform the Active Test according to the display on the GTS.

      Body Electrical > Main Body > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Trunk and Back-Door Open Luggage door condition signal OFF or ON -

      Body Electrical > Main Body > Active Test 

      Tester Display
      Trunk and Back-Door Open

      OK

      The luggage door operates normally according to the GTS operation.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  8

    Result: 

    OK 

    See step  5

  5. READ VALUE USING GTS 
    1. Read the Data List according to the display on the GTS.

      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 door courtesy light switch signal OFF or ON OFF: Luggage door closed
      ON: Luggage door open      		 -

      Body Electrical > Main Body > Data List 

      Tester Display
      Trunk Main SW
      Luggage Courtesy SW

      OK

      The Data List item changes according to the operation of the luggage door opening cancel switch assembly.

      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 door opening or closing C

    Result: 

    A 

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [12/2023 - ] 

    Result: 

    C 

    GO TO LIGHTING SYSTEM. Refer to  Luggage Compartment Door Courtesy Switch Circuit [12/2023 - ] 

    Result: 

    B 

    See step  6

  6. INSPECT LUGGAGE DOOR OPENING CANCEL SWITCH ASSEMBLY 

    Refer to INSPECTION [11/2020 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE LUGGAGE DOOR OPENING CANCEL SWITCH ASSEMBLY. Refer to  REMOVAL [11/2020 - ] 

    Result: 

    OK 

    See step  7

  7. CHECK HARNESS AND CONNECTOR (LUGGAGE DOOR OPENING CANCEL SWITCH ASSEMBLY - MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU] AND BODY GROUND) 
    1. Disconnect the D87 luggage door opening cancel switch assembly connector.
    2. Disconnect the D11 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
      D87-2 (B) - D11-27 (TMSW) Always Below 1 Ω
      D87-1 (L) - Body ground Always Below 1 Ω
      D87-2 (B) or D11-27 (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 [12/2023 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  8. INSPECT LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY 

    Refer to INSPECTION [11/2020 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY. Refer to  REMOVAL [11/2020 - ] 

    Result: 

    OK 

    See step  9

  9. INSPECT TRUNK OPEN RELAY (TRUNK OPN) 

    Refer to INSPECTION [11/2020 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE TRUNK OPEN RELAY (TRUNK OPN) 

    Result: 

    OK 

    See step  10

  10. CHECK HARNESS AND CONNECTOR (LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY - TRUNK OPEN RELAY [TRUNK OPN] AND BODY GROUND) 
    1. Disconnect the K1 luggage compartment door lock assembly connector.
    2. Remove the trunk open relay (TRUNK OPN) from the Luggage room relay block assembly.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K1-1 (B) - Trunk open relay (TRUNK OPN) terminal 3 Always Below 1 Ω
      K1-2 (E) - Body ground Always Below 1 Ω
      K1-1 (B) or Trunk open 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  11

  11. CHECK HARNESS AND CONNECTOR (TRUNK OPEN RELAY [TRUNK OPN] - BATTERY AND BODY GROUND) 
    1. Remove the trunk open relay (TRUNK OPN) from the Luggage room relay block assembly.
      GTY1005298Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Trunk Open Relay [TRUNK OPN])
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      Trunk open 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 Switch Condition Specified Condition
      Trunk open relay (TRUNK OPN) terminal 1 - Body ground Ignition switch off 11 to 14 V
      Trunk open relay (TRUNK OPN) terminal 5 - Body ground Ignition switch off 11 to 14 V

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  12

  12. CHECK HARNESS AND CONNECTOR (TRUNK OPEN RELAY [TRUNK OPN] - DRIVER SIDE JUNCTION BLOCK ASSEMBLY) 
    1. Remove the trunk open relay (TRUNK OPN) from the Luggage room relay block assembly.
    2. Disconnect the 4F 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
      Trunk open relay (TRUNK OPN) terminal 2 - 4F-32 Always Below 1 Ω
      Trunk open relay (TRUNK OPN) terminal 2 or 4F-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  13

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

      Refer to REMOVAL [12/2023 - ]

      GTY982214Courtesy 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 [12/2023 - ]

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      4F-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 [12/2023 - ] 

    Result: 

    NG 

    REPLACE DRIVER SIDE JUNCTION BLOCK ASSEMBLY. Refer to  REMOVAL [12/2023 - ] 

  14. PERFORM ACTIVE TEST USING GTS 
    1. Perform the Active Test according to the display on the GTS.

      Body Electrical > Main Body > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Trunk Lid / Back Door Open Luggage door condition signal OFF or ON -

      Body Electrical > Main Body > Active Test 

      Tester Display
      Trunk Lid / Back Door Open

      OK

      The luggage door operates normally according to the GTS operation.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  18

    Result: 

    OK 

    See step  15

  15. READ VALUE USING GTS 
    1. Read the Data List according to the display on the GTS.

      Body Electrical > Main Body > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Luggage Courtesy Switch Status Luggage door courtesy light switch signal Close or Open Close: Luggage door closed
      Open: Luggage door open      		 -
      Trunk Lid Opener Main Switch Luggage door opening cancel switch assembly signal ON or OFF OFF: Luggage door opening cancel switch assembly off
      ON: Luggage door opening cancel switch assembly on      		 -

      Body Electrical > Main Body > Data List 

      Tester Display
      Luggage Courtesy Switch Status
      Trunk Lid Opener Main Switch

      OK

      The Data List item changes according to the operation of the luggage compartment door opening switch assembly.

      Result

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

    Result: 

    A 

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [12/2023 - ] 

    Result: 

    C 

    GO TO LIGHTING SYSTEM. Refer to  Luggage Compartment Door Courtesy Switch Circuit [12/2023 - ] 

    Result: 

    B 

    See step  16

  16. INSPECT LUGGAGE DOOR OPENING CANCEL SWITCH ASSEMBLY 

    Refer to INSPECTION [11/2020 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE LUGGAGE DOOR OPENING CANCEL SWITCH ASSEMBLY. Refer to  REMOVAL [11/2020 - ] 

    Result: 

    OK 

    See step  17

  17. CHECK HARNESS AND CONNECTOR (LUGGAGE DOOR OPENING CANCEL SWITCH ASSEMBLY - MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU] AND BODY GROUND) 
    1. Disconnect the D87 luggage door opening cancel switch assembly connector.
    2. Disconnect the D196 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
      D87-2 (B) - D196-9 (TMSW) Always Below 1 Ω
      D87-1 (L) - Body ground Always Below 1 Ω
      D87-2 (B) or D196-9 (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 [12/2023 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  18. INSPECT LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY 

    Refer to INSPECTION [11/2020 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY. Refer to  REMOVAL [11/2020 - ] 

    Result: 

    OK 

    See step  19

  19. CHECK HARNESS AND CONNECTOR (LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY - POWER DISTRIBUTION BOX ASSEMBLY AND BODY GROUND) 
    1. Disconnect the K1 luggage compartment door lock assembly connector.
    2. Disconnect the 8G power distribution box assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K1-1 (B) - 8G-42 Always Below 1 Ω
      K1-3 (D+) - 8G-2 Always Below 1 Ω
      K1-2 (E) - Body ground Always Below 1 Ω
      K1-1 (B) or 8G-42 - Body ground Always 10 kΩ or higher
      K1-3 (D+) or 8G-2 - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  20

  20. CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - BATTERY AND BODY GROUND) 
    1. Disconnect the 8C, 8B and 8H power distribution box assembly connectors.
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      8H-1 - Body ground Ignition switch off 11 to 14 V
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      8B-36 - Body ground Always Below 1 Ω
      8C-41 - Body ground Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  21

  21. INSPECT POWER DISTRIBUTION BOX ASSEMBLY 
    GTY1209292Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Component without harness connected
    (Power Distribution Box Assembly)    		 - -
    1. Remove the power distribution box assembly.

      Refer to REMOVAL [12/2023 - ]

    2. Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      8C-41- A-13 (GND1) Always Below 1 Ω
      8B-36- A-14 (GND2) Always Below 1 Ω
      8G-2- A-19 (LGCY) Always Below 1 Ω
      8H-1- 8G-42 Auxiliary battery voltage not applied between terminals 8H-1 and A-5 (TR+) 10 kΩ or higher
      8H-1- 8G-42 Auxiliary battery voltage applied between terminals 8H-1 and A-5 (TR+) Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [12/2023 - ] 

    Result: 

    NG 

    REPLACE POWER DISTRIBUTION BOX ASSEMBLY. Refer to  REMOVAL [12/2023 - ] 

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