Toyota Tundra Service Manual: Key-off Operation Function Operates even if Operating Conditions are not Satisfied

Toyota Tundra Service Manual / Vehicle Interior / Window / Glass / Power Window Control System(w/o Jam Protection Function) / Key-off Operation Function Operates even if Operating Conditions are not Satisfied

DESCRIPTION

  • When the front doors are closed and the ignition switch is turned from ON to OFF, each power window regulator motor can control its power window operation for approximately 43 +/-1.5 seconds by receiving operation permission signals from the main body ECU (multiplex network body ECU). However, when approximately 43 +/-1.5 seconds have elapsed, or the driver side door or front passenger side door is opened within approximately 43 +/-1.5 seconds after turning the ignition switch off, the power window regulator motor stops operating.
  • During the AUTO DOWN function operation, when 43 +/-1.5 seconds have passed and the key-off operation is prohibited, the window operation stops immediately.
  • The front passenger side power window and rear power windows cannot be operated when the window lock switch is pressed.

WIRING DIAGRAM

PROCEDURE

1.

CHECK POWER WINDOW OPERATION FUNCTION AFTER IGNITION SWITCH OFF

(a) Check the power window operation function after the ignition switch is turned OFF.

Result:

Result

Proceed to

Front side door is opened within 43 +/-1.5 seconds but power window can still operate

A

43 +/-1.5 seconds pass and power windows can still operate

B

B

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

A

2.

READ VALUE USING TECHSTREAM (DOOR COURTESY SWITCH)

(a) Use the Data List to check if the main body ECU (multiplex network body ECU) is functioning properly.

Main Body:

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

D Door Courtesy SW

Driver side door courtesy switch signal / ON or OFF

ON: Driver door open

OFF: Driver door closed

-

P Door Courtesy SW

Front passenger side door courtesy switch signal / ON or OFF

ON: Front passenger door open

OFF: Front passenger door closed

-

OK:

Tester display changes normally when door courtesy switch is operated.

OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

NG

GO TO LIGHTING SYSTEM

    How To Proceed With Troubleshooting

    Operation Check

    See More:

    Toyota Tundra Service Manual > Air Conditioning: Solar Sensor(for Automatic Air Conditioning System)
    Components COMPONENTS ILLUSTRATION Inspection INSPECTION PROCEDURE 1. INSPECT AUTOMATIC LIGHT CONTROL SENSOR (SOLAR SENSOR) (a) Connect the positive (+) lead from the battery to terminal 6 and the negative (-) lead to terminal 3, and then measure the voltage according to the value(s) in the table be ...

    Toyota Tundra Owners Manual

    Toyota Tundra Service Manual

    © 2024 Copyright www.ttundra.com
    0.019