Toyota 4Runner: Auto Down Operation does not Fully Open Power Window (Catch Protection Function is Activated)

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

DESCRIPTION

If any door glass or a power window regulator motor assembly does not operate smoothly, the catch protection function may be triggered automatically, resulting in the auto down operation being unable to fully open the power window.

CAUTION / NOTICE / HINT

NOTICE:

When a power window regulator motor is reinstalled or replaced, the power window control system must be initialized.

HINT:

This symptom may occur for any of the windows.
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

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

2.	CHECK POWER WINDOW CONTROL SYSTEM

(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).

END (PROBLEM DUE TO INITIALIZATION FAILURE)

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.

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

OK:

Window glass slides smoothly.

NOTICE:

Perform initialization again (See page ).

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.

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

REPLACE POWER WINDOW REGULATOR MOTOR (APPLICABLE)

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