Driver Side Power Window does not Operate with Power Window Master Switch [11/2022 - ]: Procedure

2025 Toyota Corolla Cross L, FWDSECTION Procedure
  1. CHECK POWER WINDOW OPERATION 
    1. Operate the multiplex network master switch assembly and check that the power window operates normally.

      Result

      Result  Proceed to
      OK (Operates normally) A
      NG (Does not operate only for the driver seat.) B
      NG (Does not operate except for the driver seat.) C

    Result: 

    USE SIMULATION METHOD TO CHECK 

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2021 - ]

    Result: 

    GO TO OTHER PROBLEM (Remote Up / Down Function does not Operate) 

    Refer to Remote Up / Down Function does not Operate [11/2022 - ] 

    Result: 

    See step  2

  2. 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
      Communication D-Door Motor Connection status between power window regulator motor assembly (for driver door) and main body ECU (multiplex network body ECU) STOP or OK STOP: Communication stopped
      OK: Normal communication
      -
      Communication Master Switch Connection status between multiplex network master switch assembly and main body ECU (multiplex network body ECU) STOP or OK STOP: Communication stopped
      OK: Normal communication
      -

      Body Electrical > Main Body > Data List 

      Tester Display
      Communication D-Door Motor
      Communication Master Switch

      OK

      OK is displayed for each Data List item above.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  7

    Result: 

    OK 

    See step  3

  3. PERFORM VISUAL INSPECTION TO CHECK INSTALLATION CONDITION 
    1. Check that the power window components of the driver door window are correctly installed (components which may cause the door glass to deviate from the normal fully closed position, such as the door glass runs).

      OK

      The power window components of the driver door window are correctly installed.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    INSTALL PARTS CORRECTLY 

    Result: 

    OK 

    See step  4

  4. CHECK DOOR GLASS SLIDING MOVEMENT 
    1. Remove the bolt of the door glass and check that the door glass slides smoothly without being caught when it is moved up and down by hand.
      NOTE:
      • The door glass fits with the glass run without improper contact or deformation.
      • Foreign matter is not caught in the glass run.
      • The glass run is not misaligned.
      • The door belt moulding or door inner glass weatherstrip is not caught.
      • The glass is not tilted and does not catch.

      OK

      The door glass slides smoothly without being caught when it is moved up and down by hand.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    INSTALL PARTS CORRECTLY (Remove any foreign matter which may cause poor installation, or repair or replace parts that are installed incorrectly.) 

    Result: 

    OK 

    See step  5

  5. CHECK FRONT DOOR WINDOW REGULATOR WITH MOTOR ASSEMBLY (for Driver Door) OPERATION 
    1. Remove the front door glass sub-assembly (for driver door).

      HINT: 

      Refer to DISASSEMBLY [11/2022 - ]

    2. Connect the multiplex network master switch assembly connector.
    3. Turn the ignition switch to ON.
    4. Operate the driver door switch of the multiplex network master switch assembly and check that the front door window regulator with motor assembly (for driver door) operates smoothly.

      OK

      Operates smoothly without being caught.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END (OVERHEATED POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Driver Door) WAS DEFECTIVE) 

    Result: 

    NG 

    See step  6

  6. PERFORM VISUAL INSPECTION OF FRONT DOOR WINDOW REGULATOR SUB-ASSEMBLY (for Driver Door) 
    1. Remove the front door window regulator with motor assembly (for driver door).

      HINT: 

      Refer to DISASSEMBLY [11/2022 - ]

    2. Remove the power window regulator motor assembly (for driver door).

      HINT: 

      Refer to REMOVAL [11/2022 - ]

    3. Check that the front door window regulator sub-assembly (for driver door) is not deformed or distorted.

      OK

      No deformation or distortion.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Driver Door) 

    Refer to REMOVAL [11/2022 - ]

    Result: 

    NG 

    REPLACE FRONT DOOR WINDOW REGULATOR SUB-ASSEMBLY (for Driver Door) 

    Refer to DISASSEMBLY [11/2022 - ]

  7. CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY - POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Driver Door)) 
    1. Disconnect the L7 multiplex network master switch assembly connector.
    2. Disconnect the L2 power window regulator motor assembly (for driver door) connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      L7-20 (UP) - L2-10 (UP) Always Below 1 Ω
      L7-15 (DOWN) - L2-7 (DOWN) Always Below 1 Ω
      L7-20 (UP) or L2-10 (UP) - Body ground Always 10 kΩ or higher
      L7-15 (DOWN) or L2-7 (DOWN) - 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 MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY 
    1. Connect the L7 multiplex network master switch assembly connector.
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      L7-20 (UP) - Body ground Ignition switch ON 11 to 14 V
      L7-15 (DOWN) - Body ground Ignition switch ON 11 to 14 V

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Driver Door) 

    Refer to REMOVAL [11/2022 - ]

    Result: 

    NG 

    REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY 

    Refer to REMOVAL [09/2021 - ]

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.