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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Body & Frame >> Sun Roof/T-Top/Convertible Top >> Sliding Roof System - Diagnostic Codes & Symptom Tests >> Sliding Roof System >> Sliding Roof does not Move by Operating Sliding Roof Control Switch [12/2019 - 11/2023] >> Procedure

Sliding Roof does not Move by Operating Sliding Roof Control Switch [12/2019 - 11/2023]: Procedure

  1. PERFORM ACTIVE TEST USING GTS (SLIDING ROOF) 
    1. Perform the Active Test according to the display on the GTS.

      Body Electrical > Sliding Roof > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Slide Roof Operate sliding roof motor OFF / Opn/Dwn / Clos/Up -

      Body Electrical > Sliding Roof > Active Test 

      Tester Display
      Slide Roof

      OK

      Slide roof is operated using GTS.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  5

    Result: 

    OK 

    See step  2

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

      Body Electrical > Sliding Roof > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Open Switch OPEN switch signal OFF or ON OFF: OPEN switch not pressed
      ON: OPEN switch pressed      		 -
      Close Switch CLOSE switch signal OFF or ON OFF: CLOSE switch not pressed
      ON: CLOSE switch pressed      		 -
      Up Switch UP switch signal OFF or ON OFF: UP switch not pressed
      ON: UP switch pressed      		 -
      Down Switch DOWN switch signal OFF or ON OFF: DOWN switch not pressed
      ON: DOWN switch pressed      		 -

      Body Electrical > Sliding Roof > Data List 

      Tester Display
      Open Switch
      Close Switch
      Up Switch
      Down Switch

      OK

      The GTS display changes according to the operation of each switch as shown in the table.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY). Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023] 

    Result: 

    NG 

    See step  3

  3. INSPECT SLIDING ROOF SWITCH (MAP LIGHT ASSEMBLY) 

    Refer to INSPECTION [12/2019 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE SLIDING ROOF SWITCH (MAP LIGHT ASSEMBLY). Refer to  REMOVAL [12/2019 - ] 

    Result: 

    OK 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY) - SLIDING ROOF SWITCH (MAP LIGHT ASSEMBLY) AND BODY GROUND) 
    1. Disconnect the R11 sliding roof switch (map light assembly) connector.
    2. Disconnect the R2 sliding roof ECU (sliding roof drive gear assembly) connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      R2-8 (CLS) - R11-19 (CLS) Always Below 1 Ω
      R2-8 (CLS) or R11-19 (CLS) - Body ground Always 10 kΩ or higher
      R2-10 (OPN) - R11-20 (OPN) Always Below 1 Ω
      R2-10 (OPN) or R11-20 (OPN) - Body ground Always 10 kΩ or higher
      R2-9 (CLS) - R11-18 (DOWN) Always Below 1 Ω
      R2-9 (CLS) or R11-18 (DOWN) - Body ground Always 10 kΩ or higher
      R2-5 (OPN) - R11-17 (UP) Always Below 1 Ω
      R2-5 (OPN) or R11-17 (UP) - Body ground Always 10 kΩ or higher
      R11-11 (GND) - Body ground Always Below 1 Ω
      R2-2 (E) - Body ground Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY). Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  5. CHECK HARNESS AND CONNECTOR (SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY) - IG POWER SUPPLY AND BODY GROUND) 
    1. Disconnect the R2 sliding roof ECU (sliding roof drive gear assembly) connector.
      GTY892958Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Sliding Roof ECU (Sliding Roof Drive Gear Assembly))
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      R2-1 (B) - Body ground Ignition switch off 11 to 14 V
      R2-6 (IG) - Body ground Ignition switch ON 11 to 14 V
      R2-6 (IG) - Body ground Ignition switch off Below 1 V
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      R2-2 (E) - Body ground Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY). Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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