Toyota Tundra Service Manual: Remote Up / Down Function does not Operate

DESCRIPTION

Front passenger side:

When the ignition switch is ON and the window lock switch is OFF, the master switch sends remote UP/DOWN signals to the front passenger side motor via the LIN communication line.

Rear side:

With the ignition switch ON, the master switch transmits remote switch signals to the regulator switches of the rear door power windows. Then, each regulator switch drives its respective power window regulator motor.

HINT:

The front passenger side and rear power windows cannot be operated when the window lock switch of the master switch is pressed.

PROCEDURE

1.

CHECK POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY (WINDOW LOCK SWITCH)

(a) Turn the window lock switch OFF and operate the switches on the master switch. Check that the remote UP/DOWN function operates normally.

OK:

Remote UP/DOWN function operates normally.

Result

Result

Proceed to

OK

A

NG (for Front RH side)

B

NG (for Rear side)

C

A

END

C

REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY

B

2.

CHECK LIN COMMUNICATION SYSTEM

(a) Check for LIN communication system DTCs related to the power window control system (See page ).

OK:

LIN communication system DTCs are not output.

NG

GO TO LIN COMMUNICATION SYSTEM

OK

3.

READ VALUE USING TECHSTREAM (MASTER SWITCH)

(a) Use the Data List to check if the master switch is functioning properly.

Master Switch

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

P Door P/W Auto SW

Front passenger side power window remote auto UP/DOWN switch signal / ON or OFF

ON: Front passenger side switch of master switch operated

OFF: Front passenger side switch of master switch not operated

-

P Door P/W Up SW

Front passenger side power window remote manual UP switch signal / ON or OFF

ON: Front passenger side switch of master switch operated

OFF: Front passenger side switch of master switch not operated

-

P Door P/W Down SW

Front passenger side power window remote manual DOWN switch signal / ON or OFF

ON: Front passenger side switch of master switch operated

OFF: Front passenger side switch of master switch not operated

-

OK:

The Techstream display changes normally when master switch is operated.

OK

REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH

NG

REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY

    Rear Power Window RH does not Operate with Rear Power Window Switch RH

    System Description

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