Toyota Tundra. Manual — part 714

Fig. 6: Power Window Control System Diagram (2 Of 2)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

SYSTEM DESCRIPTION

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Windshield/WindowGlass - Tundra

1. POWER WINDOW CONTROL SYSTEM DESCRIPTION



The power window control system controls the power window UP/DOWN function using the
power window regulator motors.

The main controls of this system are the power window regulator master switch, which is built into
the driver side door, and the power window regulator switches, which are built into the front
passenger side door and rear doors* 1, *2.

HINT:



*1: for Double Cab



*2: for CrewMax



Pressing either of the power window switches on the power window regulator switches or either of
the power window switches on the power window regulator master switch transmits an UP/DOWN
signal to the corresponding power window regulator motor.

2. FUNCTION OF MAIN COMPONENT

The power window control system consists of the following components:

FUNCTION OF MAIN COMPONENT

3. SYSTEM FUNCTION

The power window control system has the following functions:

SYSTEM FUNCTION REFERENCE CHART

Component

Outline

Power Window Regulator
Master Switch



Controls power window operation for all windows



When window lock switch is set to lock position, window operation
will only be possible with driver side power window switch.

Power Window Regulator
Switch



Located on front passenger side door and rear doors* 1, *2



Each power window regulator switch controls power window
operations for its respective window.

Power Window Regulator
Motor

Receives power window regulator switch signals and activates motor to
change window position.

HINT:



*1: for Double Cab



*2: for CrewMax

Function

Outline

Manual UP function

Function that raises window while power window regulator switch or power
window regulator master switch is pulled up (window stops as soon as power
window regulator switch is released)

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Windshield/WindowGlass - Tundra

HOW TO PROCEED WITH TROUBLESHOOTING

HINT:



Use these procedures to troubleshoot the power window control system.



*: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP

2. INSPECT BATTERY VOLTAGE

Standard voltage:

11 to 14 V

If the voltage is below 11V, recharge or replace the battery before proceeding.

3. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

Manual DOWN
function

for Driver Seat:
Function that lowers window while power window regulator master switch is
pushed halfway down (window stops as soon as power window regulator master
switch is released)
for Other Seats:
Function that lowers window while power window regulator switch is pushed
down (window stops as soon as power window regulator switch is released)

AUTO DOWN
function (for Driver
Seat)

Function that enables window to be fully opened by one full push of power
window regulator master switch

Remote UP/DOWN
function

Function that allows power window regulator master switch to control manual
UP/DOWN function of front passenger side power window and rear power
windows*1, *2

Window lock
function



Function where front passenger side power window switch and rear power
window switch*1, *2 operations are disabled when window lock switch of
power window regulator master switch is pressed



Front passenger side power window switch and rear power window
switch*1, *2 can be operated when window lock switch is pressed again

Key-off operation
function



Function that makes it possible to operate all power windows for
approximately 43 +/-1.5 seconds after ignition switch is turned OFF when
front side door has not been opened



If 43 +/-1.5 seconds have passed or front side door is opened while AUTO
DOWN function is operating, window operation stops

HINT:



*1: for Double Cab



*2: for CrewMax

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Windshield/WindowGlass - Tundra

a. Use the Techstream to check if the CAN communication system is functioning normally.

Result:

COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM RESULT
REFERENCE CHART

B: Go TO CAN COMMUNICATION SYSTEM (See HOW TO PROCEED WITH
TROUBLESHOOTING )

A: Go to Next Step

4. PROBLEM SYMPTOMS TABLE

a. Refer to the PROBLEM SYMPTOMS TABLE .

Result:

COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM RESULT
REFERENCE CHART

B: Go TO STEP 6

A: Go to Next Step

5. OVERALL ANALYSIS AND TROUBLESHOOTING*

a. See OPERATION CHECK .

b. See TERMINALS OF ECU .

c. See DATA LIST / ACTIVE TEST .

6. REPAIR OR REPLACEMENT

7. CONFIRMATION TEST

NEXT: END

OPERATION CHECK

1. CHECK WINDOW LOCK SWITCH

a. Check that the front passenger side power window and rear power windows*1, *2 cannot be

operated when the window lock switch of the power window regulator master switch is pressed.

Result

Proceed to

CAN DTC is not output

A

CAN DTC is output

B

Result

Proceed to

Fault not listed in problem symptoms table

A

Fault listed in problem symptoms table

B

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Windshield/WindowGlass - Tundra