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Power Window Control System - Diagnosis: Pre-Check

  1. CHECK WINDOW LOCK SWITCH 
    1. Check that operation of the door glasses except the driver side door glass and the roof glass is disabled when the window lock switch of the power window master switch is pressed.
    2. Check that the door glasses and the roof glass can be operated when the window lock switch is pressed again.
    Fig 1: Checking Window Lock Switch
    G03476758Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. CHECK MANUAL UP/DOWN FUNCTION 
    1. Check that the driver side power window operates as follows.

      Standard: 

      CONDITION OF MASTER SWITCH, SWITCH OPERATION AND DOOR GLASS DESCRIPTION

      Condition Master Switch Switch Operation Door Glass
      Ignition switch ON Driver side Halfway pushed DOWN DOWN (Open)
      Halfway pulled UP UP (Closed)
    2. Check that the power windows except the driver side power window operate as follows.

    Standard: 

    CONDITION OF SWITCH, SWITCH OPERATION AND DOOR GLASS DESCRIPTION

    Condition Switch Switch Operation Door Glass
    • Ignition switch ON
    • Window lock switch OFF
    		 Passenger side Halfway pushed DOWN DOWN (Open)
    Halfway pulled UP UP (Closed)
    Rear LH Halfway pushed DOWN DOWN (Open) A
    Halfway pulled UP UP (Closed)
    Rear RH Halfway pushed DOWN DOWN (Open)
    Halfway pulled UP UP (Closed)
  3. CHECK AUTO UP/DOWN FUNCTION 
    1. Check that the driver side power window operates as follows.

      Standard: 

      CONDITION OF MASTER SWITCH, SWITCH OPERATION AND DOOR GLASS DESCRIPTION

      Condition Master Switch Switch Operation Door Glass
      Ignition switch ON Driver side Fully pushed DOWN AUTO DOWN (Fully open)
      Fully pulled UP AUTO UP (Fully closed)
    2. Check that the power windows except the driver side power window operate as follows.

    Standard: 

    CONDITION OF SWITCH, SWITCH OPERATION AND DOOR GLASS DESCRIPTION

    Condition Switch Switch Operation Door Glass
    • Ignition switch ON
    • Window lock switch OFF
    		 Passenger side Fully pushed DOWN AUTO DOWN (Fully open)
    Fully pulled UP AUTO UP (Fully closed)
    Rear LH Fully pushed DOWN AUTO DOWN (Fully open)
    Fully pulled UP AUTO UP (Fully closed)
    Rear RH Fully pushed DOWN AUTO DOWN (Fully open)
    Fully pulled UP AUTO UP (Fully closed)
  4. CHECK REMOTE MANUAL UP/DOWN FUNCTION 
    1. Check that the power windows except the driver side power window operate as follows.

    Standard: 

    CONDITION OF MASTER SWITCH, SWITCH OPERATION AND DOOR GLASS DESCRIPTION

    Condition Master Switch Switch Operation Door Glass
    • Ignition switch ON
    • Window lock switch OFF
    		 Passenger side Halfway pushed DOWN DOWN (Open)
    Halfway pulled UP UP (Closed)
    Rear LH Halfway pushed DOWN DOWN (Open)
    Halfway pulled UP UP (Closed)
    Rear RH Halfway pushed DOWN DOWN (Open)
    Halfway pulled UP UP (Closed)
  5. CHECK REMOTE AUTO UP/DOWN FUNCTION 
    1. Check that the power windows except the driver side power window operate as follows.

      Standard: 

      CONDITION OF MASTER SWITCH, SWITCH OPERATION AND DOOR GLASS DESCRIPTION

      Condition Master Switch Switch Operation Door Glass
      • Ignition switch ON
      • Window lock switch OFF
      		 Passenger side Fully pushed DOWN AUTO DOWN (Fully open)
      Fully pulled UP AUTO UP (Fully closed)
      Rear LH Fully pushed DOWN AUTO DOWN (Fully open)
      Fully pulled UP AUTO UP (Fully closed)
      Rear RH Fully pushed DOWN AUTO DOWN (Fully open)
      Fully pulled UP AUTO UP (Fully closed)
    2. CHECK MANUAL UP/DOWN FUNCTION VIA DRIVER SIDE DOOR LOCK KEY CYLINDER 
      1. Check that all door glasses and sliding roof operate as follows, when the key is inserted into the key cylinder.

      Standard: 

      KEY, POSITION/OPERATION AND CONDITION

      Condition Key Position/Operation
      Ignition switch OFF Turned right (LOCK) for more than 1.5 sec. Driver and passenger side door glasses/UP
      Turned left (UNLOCK) for more than 1.5 sec. Driver and passenger side door glasses/DOWN
      Turned right (LOCK) for more than 2.0 sec. Rear LH and RH door glasses/UP
      Turned left (UNLOCK) for more than 2.0 sec. Rear LH and RH door glasses/DOWN
      Turned right (LOCK) for more than 2.5 sec. Sliding roof/Closed
      Turned left (UNLOCK) for more than 2.5 sec. Sliding roof/Open
    3. CHECK MANUAL DOWN FUNCTION VIA TRANSMITTER 
      1. Check that all door glasses and sliding roof operate as follows, when operating the transmitter.

      Standard: 

      TRANSMITTER, POSITION/OPERATION AND CONDITION

      Condition Transmitter Position/Operation
      Ignition switch OFF Press UNLOCK for more than 1.5 sec. Driver and passenger side door glass/DOWN
      Press UNLOCK for more than 2.0 sec. Rear LH and RH door glass/DOWN
      Press UNLOCK for more than 2.5 sec. Sliding roof/Open
    4. CHECK POWER WINDOW OPERATION FUNCTION AFTER IGNITION OFF 
    1. When both of the following conditions are fulfilled, check that the door glasses, the back door glass and the sliding roof can be operated even after the ignition switch is turned OFF:
    1. Within 45 seconds after the ignition switch is turned OFF.
    2. All the doors are closed.
  6. CHECK JAM PROTECTION 

    HINT:

    The jam protection function prevents any part of your body from getting caught by accident between the door frame and the door glass during power window operation.

    1. Check that the door glass goes down by approximately 50 mm (2.0 in.) right when something gets caught between the door frame and the door glass during power window operation. However, when the opening between the door frame and the door glass is less than 200 mm (7.9 in.), the door glass keeps going down until the opening reaches 200 mm (7.9 in.) and stops there.

    Operative condition: 

    • AUTO UP
    • AUTO UP function after the ignition switch is turned OFF
    • MANUAL UP function after the ignition switch is turned OFF
    • MANUAL UP function via the driver side door lock key cylinder
    Fig 2: Checking JAM Protection
    G03476759Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. CHECK POWER WINDOW FAIL-SAFE FUNCTION 

    HINT:

    If there is a malfunction in the power window system, some of the power window functions will be disabled.

    Driver side power window: 

    MALFUNCTIONING PART, DISABLED FUNCTION AND OPERATIVE FUNCTION

    Malfunctioning Part Disabled Function Operative Function
    Pulse sensor circuit in power window motor
    • AUTO UP/DOWN function
    • Power window operation function after ignition OFF
    • Manual UP (fully pulled UP position)
    • Manual DOWN
    • Remote (AUTO and manual)
    • Remote function after ignition OFF (AUTO and manual)
    • MANUAL UP/DOWN function via driver side door lock key cylinder
    • MANUAL DOWN function via transmitter
    CPU in power window master switch
    • AUTO UP/DOWN function
    • Remote function (AUTO and manual)
    • MANUAL UP/DOWN function via driver side door lock key cylinder
    • MANUAL DOWN function via transmitter
    • Manual UP (fully pulled UP position)
    • Manual DOWN

    Power windows except driver side power window: 

    MALFUNCTIONING PART, DISABLED FUNCTION AND OPERATIVE FUNCTION

    Malfunctioning Part Disabled Function Operative Function
    • Pulse sensor circuit in power window motor
    • CPU in power window master switch
    • Communication between master switch and each power window switch
    • AUTO UP/DOWN function
    • Power window operation function after ignition OFF
    • MANUAL UP/DOWN function via driver side door lock key cylinder
    • MANUAL DOWN function via transmitter
    • Manual UP function (fully pulled UP position)
    • Manual DOWN function
  8. CHECK SWITCH CONDITION WITH HAND-HELD TESTER 

    HINT:

    DTC B1221 is output when switches of the power window master switch are on. When these switches are off, DTC B1221 is not output. Using this DTC, you can check whether these switches are normal or not.

  9. CHECK DATA LIST WITH HAND-HELD TESTER 

    HINT:

    According to the DATA LIST displayed by the hand-held tester, you can read the value of the switch, sensor, actuator, etc. without parts removal. Reading the DATA LIST as the first step of troubleshooting is one way to shorten the labor time.

    DATA LIST in D-DOOR ECU: 

    DATA LIST IN D-DOOR ECU

    Measurement Item Label Parameter
    Driver switch on master switch P/W AUTO SW ON/OFF
    Passenger switch on master switch P P/W AUTO SW ON/OFF
    Rear RH switch on master switch RR P/W AUTO SW ON/OFF
    Rear LH switch on master switch RL P/W AUTO SW ON/OFF
    Door glass position (Fully closed - 1/4 open) GLASS POS-1/4 CAUTION/OK(1)
    Door glass position (1/4 open - 2/4 open) GLASS POS-2/4 CAUTION/OK(1)
    Door glass position (2/4 open - 3/4 open) GLASS POS-3/4 CAUTION/OK(1)
    Door glass position (3/4 open - Fully opened) GLASS POS-OPEN CAUTION/OK(1)
    (1) CAUTION is displayed even when no resistance is applied in each position. In this case there must be something caught somewhere in that position.
  10. CHECK ACTIVE TEST WITH HAND-HELD TESTER 

    HINT:

    Performing the ACTIVE TEST using the hand-held tester allows you to operate the relay, VSV, actuator, etc. without parts removal. Performing the ACTIVE TEST as the first step of trouble shooting is one way to shorten the labor time. It is possible to display the DATA LIST during the ACTIVE TEST.

    ACTIVE TEST in D-DOOR ECU: 

ACTIVE TEST REFERENCE

Operation Item Label Operation
Driver side power window UP/DOWN P/W UP/DOWN UP/DOWN

ACTIVE TEST in BODY ECU: 

OPERATION ITEM, LABEL AND OPERATION

Operation Item Label Operation
Passenger side power window UP/DOWN P P/W UP/DOWN UP/DOWN
Rear LH power window UP/DOWN RL P/W UP/DOWN UP/DOWN
Rear RH power window UP/DOWN RR P/W UP/DOWN UP/DOWN
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