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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Accessories & Equipment >> Anti-Theft Systems >> Power Back Door System - Diagnostic Codes & Symptom Tests >> Power Back Door System >> Power Back Door cannot be Operated Using Any Switch [10/2022 - 11/2023] >> Procedure

Power Back Door cannot be Operated Using Any Switch [10/2022 - 11/2023]: Procedure

  1. CHECK COMBINATION METER ASSEMBLY 
    1. Check that the shift position indicator operates correctly and the speedometer indicates 0 km/h (0 mph) when the vehicle is stopped with the hybrid control system started.

      OK

      Combination meter operates normally

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    GO TO METER / GAUGE SYSTEM 

    except 12.3 Inch Display: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ]

    for 12.3 Inch Display: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - ]

    Result: 

    OK 

    See step  2

  2. CHECK FOR DTC 
    1. Check for DTCs.

      Body Electrical > Back Door > Trouble Codes 

      OK

      DTC is not output

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [12/2019 - 11/2023] 

    Result: 

    OK 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK DOOR ECU - AUXILIARY BATTERY AND BODY GROUND) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY929382Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (to Multiplex Network Door ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      W19-10 (GND) - Body ground Always Below 1 Ω
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      W18-20 (ECUB) - Body ground Ignition switch off*1
      Always*2      		 11 to 14 V
      W19-1 (B) - Body ground Ignition switch off*1
      Always*2      		 11 to 14 V
      W18-18 (IG) - Body ground Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      1. *1: for HV Model
      2. *2: for Gasoline Model

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  4

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

      Body Electrical > Back Door > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      PBD Main SW Power back door ON/OFF signal OFF or ON Customize setting displayed -

      Body Electrical > Back Door > Data List 

      Tester Display
      PBD Main SW

      OK

      The display is as specified in the normal condition column.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    GO TO METER / GAUGE SYSTEM 

    except 12.3 Inch Display: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ]

    for 12.3 Inch Display: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - ]

    Result: 

    OK 

    See step  5

  5. READ VALUE USING GTS (PBD TOUCH SENSOR) 
    1. Read the Data List according to the display on the GTS.

      Body Electrical > Back Door > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      PBD Touch Sensor (Right) Power back door sensor assembly RH signal OFF, ON or Open OFF: Power back door sensor assembly RH not pressed
      ON: Power back door sensor assembly RH pressed
      Open: Power back door sensor assembly RH circuit open      		 -
      PBD Touch Sensor (Left) Power back door sensor assembly LH signal OFF, ON or Open OFF: Power back door sensor assembly LH not pressed
      ON: Power back door sensor assembly LH pressed
      Open: Power back door sensor assembly LH circuit open      		 -

      Body Electrical > Back Door > Data List 

      Tester Display
      PBD Touch Sensor (Right)
      PBD Touch Sensor (Left)

      Result

      Result Proceed to
      The values of Data List items "PBD Touch Sensor (Right)" and "PBD Touch Sensor (Left)" change to "ON" or "OFF" in accordance with the operation of the sensors. A
      The value of Data List item "PBD Touch Sensor (Right)" does not change to "ON" or "OFF" in accordance with the operation of the power back door sensor assembly RH. B
      The value of Data List item "PBD Touch Sensor (Left)" does not change to "ON" or "OFF" in accordance with the operation of the power back door sensor assembly LH. C

    Result: 

    A 

    REPLACE MULTIPLEX NETWORK DOOR ECU. Refer to  REMOVAL [12/2019 - 11/2023] 

    Result: 

    C 

    See step  8

    Result: 

    B 

    See step  6

  6. INSPECT POWER BACK DOOR SENSOR ASSEMBLY RH 

    Refer to INSPECTION [12/2019 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE POWER BACK DOOR SENSOR ASSEMBLY RH. Refer to  REMOVAL [12/2019 - ] 

    Result: 

    OK 

    See step  7

  7. CHECK HARNESS AND CONNECTOR (POWER BACK DOOR SENSOR ASSEMBLY RH - MULTIPLEX NETWORK DOOR ECU) 
    1. Disconnect the W18 multiplex network door ECU connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      W9-1 (OSR) - W18-6 (OSR) Always Below 1 Ω
      W9-2 (OSRE) - W18-24 (OSE) Always Below 1 Ω
      W9-1 (OSR) or W18-6 (OSR) - Body ground Always 10 kΩ or higher
      W9-2 (OSRE) or W18-24 (OSE) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE MULTIPLEX NETWORK DOOR ECU. Refer to  REMOVAL [12/2019 - 11/2023] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  8. INSPECT POWER BACK DOOR SENSOR ASSEMBLY LH 

    Refer to INSPECTION [12/2019 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE POWER BACK DOOR SENSOR ASSEMBLY LH. Refer to  REMOVAL [12/2019 - ] 

    Result: 

    OK 

    See step  9

  9. CHECK HARNESS AND CONNECTOR (POWER BACK DOOR SENSOR ASSEMBLY LH - MULTIPLEX NETWORK DOOR ECU) 
    1. Disconnect the W18 multiplex network door ECU connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      W10-1 (OSL) - W18-26 (OSL) Always Below 1 Ω
      W10-2 (OSLE) - W18-24 (OSE) Always Below 1 Ω
      W10-1 (OSL) or W18-26 (OSL) - Body ground Always 10 kΩ or higher
      W10-2 (OSLE) or W18-24 (OSE) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE MULTIPLEX NETWORK DOOR ECU. Refer to  REMOVAL [12/2019 - 11/2023] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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