LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2017 >> Mirai >> Repair and Diagnosis (Single Page) >> Body & Frame >> Windows >> Power Window Control System - Diagnostic Codes & Symptom Tests >> Power Window Control System >> Key-off Operation Function Operates even if Operating Conditions are not Satisfied [06/2015 - ] >> Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Key-off Operation Function Operates even if Operating Conditions are not Satisfied [06/2015 - ]: Procedure

  1. CHECK KEY-OFF OPERATION FUNCTION 
    1. Check the key-off operation function.

      Refer to OPERATION CHECK [06/2015 - ]

      Result

      Result Proceed to
      Power window can still be operated even after opening driver door or passenger door within approximately 43 seconds of power switch being turned off A
      Power window can still be operated even after approximately 43 seconds have elapsed after power switch is turned off (All Doors) B
      Power window can still be operated even after approximately 43 seconds have elapsed after power switch is turned off (Driver door power window) C
      Power window can still be operated even after approximately 43 seconds have elapsed after power switch is turned off (Front passenger door power window) D
      Power window can still be operated even after approximately 43 seconds have elapsed after power switch is turned off (Rear LH door) E
      Power window can still be operated even after approximately 43 seconds have elapsed after power switch is turned off (Rear RH door) F

    Result: 

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [06/2015 - 11/2018]  , or refer to  REMOVAL [11/2018 - ] 

    Result: 

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH. Refer to  REMOVAL [06/2015 - 11/2018]  , or refer to  REMOVAL [11/2018 - ] 

    Result: 

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH. Refer to  REMOVAL [06/2015 - 11/2018]  , or refer to  REMOVAL [11/2018 - ] 

    Result: 

    REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH. Refer to  REMOVAL [06/2015 - 11/2018]  , or refer to  REMOVAL [11/2018 - ] 

    Result: 

    REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH. Refer to  REMOVAL [06/2015 - 11/2018]  , or refer to  REMOVAL [11/2018 - ] 

    Result: 

    See step  2

  2. READ VALUE USING TECHSTREAM (MAIN BODY) 
    1. Read the Data List according to the display on the Techstream.

      Refer to DATA LIST / ACTIVE TEST [06/2015 - ]

      Body Electrical > Main Body > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      FR Door Courtesy SW Front door courtesy light switch assembly signal OFF or ON OFF: Front door RH closed
      ON: Front door RH open
      -
      FL Door Courtesy SW Front door courtesy light switch assembly signal OFF or ON OFF: Front door LH closed
      ON: Front door LH open
      -

      Body Electrical > Main Body > Data List 

      Tester Display
      FR Door Courtesy SW
      FL Door Courtesy SW

      OK

      On the Techstream screen, ON or OFF is displayed accordingly.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [06/2015 - 11/2018]  , or refer to  REMOVAL [11/2018 - ] 

    Result: 

    NG 

    GO TO LIGHTING SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2015 - ]