Toyota 4Runner manuals

Toyota 4Runner: Auto Up Operation does not Fully Close Power Window (Jam Protection Function is Activated)

Toyota 4Runner Service Manual / Vehicle Exterior / Window / Glass / Power Window Control System / Auto Up Operation does not Fully Close Power Window (Jam Protection Function is Activated)

DESCRIPTION

If any door glass or a power window regulator motor does not operate smoothly, the jam protection function may be triggered automatically, resulting in the auto up function being unable to fully close the window.

HINT:

This symptom may occur for any of the windows.

CAUTION / NOTICE / HINT

NOTICE:

  • When a power window regulator motor is reinstalled or replaced, the power window control system must be initialized.
  • After any door glass or a door glass run has been replaced, the jam protection function may operate unexpectedly when the auto up function is used. In such cases, the auto up function can be resumed by repeating the following operations at least 5 times:
    1. Close the power window by fully pulling up the multiplex network master switch or power window regulator switch and holding it at the auto up position.
    2. Open the power window by fully pushing down the multiplex network master switch or power window regulator switch.

HINT:

Since the power window control system has functions that use LIN communication, first confirm that there is no malfunction in the communication system by inspecting the LIN communication functions in accordance with the "How to Proceed with Troubleshooting" procedures (See page ). Then, conduct the following
inspection procedure.

PROCEDURE

1.

PERFORM INITIALIZATION (APPLICABLE LOCATION)

(a) Initialize the power window regulator motor (applicable location) (See page ).


NEXT

2.

CHECK POWER WINDOW CONTROL SYSTEM (AUTO UP/DOWN FUNCTION (APPLICABLE LOCATION))

(a) Check that all door power windows move when the auto up/down function of the multiplex network master switch assembly and power window regulator switch assembly is operated (See page ).


OK:

Auto up/down function is normal (applicable location).


OK

END (PROBLEM DUE TO INITIALIZATION FAILURE)

NG

3.

CHECK WINDOW GLASS SLIDING MOVEMENT (APPLICABLE LOCATION)

(a) Remove the power window regulator motor.

(b) Install the window glass to the door glass run.

(c) Check if the power window regulator operates smoothly.

(d) Check that the window glass slides smoothly when sliding it up by hand.

OK:

Window glass slides smoothly.

NOTICE:

Perform initialization again ( ).


HINT:

Make sure that the following conditions are met:

  • The window glass fits with the glass run without improper contact or deformation.
  • Foreign objects are not caught in the glass run.

OK

INSTALL WINDOW GLASS CORRECTLY (REMOVE FOREIGN OBJECTS CAUSING IMPROPER FIT OR REPLACE PARTS)


NG

REPLACE POWER WINDOW REGULATOR MOTOR (APPLICABLE MOTOR)

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