Toyota Tundra. Manual — part 717

Fig. 9: Identifying Main Body ECU (Driver Side Junction Block) Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

a. Disconnect the J3, J4, DA and DD ECU connectors.

b. Measure the voltage and resistance according to the value(s) in the table below.

MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK)

Terminal No.

Wiring

Terminal Description

Condition

Specified

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Windshield/WindowGlass - Tundra

If the result is not as specified, there may be a malfunction on the wire harness side.

DATA LIST / ACTIVE TEST

1. READ DATA LIST

HINT:

Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and
other items to be read without removing any parts. This non-intrusive inspection can be very useful
because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading
the Data List information early in troubleshooting is one way to save diagnostic time.

a. Connect the Techstream to the DLC3.

b. Turn the ignition switch ON.

c. Turn the Techstream on.

d. Enter the following menus: Body Electrical / Main Body / Data List.

e. According to the display on Techstream, read the "Data List".

(Symbols)

Color

Condition

DA-1 (ACC) - Body

ground

B - Body

ground

ACC power supply

Ignition switch

OFF

Below 1 ohms

Ignition switch

ACC

11 to 14 V

DA-1 (IG) - Body

ground

B - Body

ground

IG power supply

Ignition switch

OFF

Below 1 ohms

Ignition switch

ON

11 to 14 V

DD-62 (GND1) -

Body ground

W-B - Body

ground

Body ground

Always

Below 1 ohms

DD-62 (GND2) -

Body ground

W-B - Body

ground

Body ground

Always

Below 1 ohms

J4-24 (DCTY) -

Body ground

BR - Body

ground

Front door courtesy light

switch LH signal

Front door LH

open

Below 1 ohms

Front door LH

closed

10 kohms or

higher

J3-21 (PCTY) -

Body ground

O - Body

ground

Front door courtesy light

switch RH signal

Front door RH

open

Below 1 ohms

Front door RH

closed

10 kohms or

higher

NOTE:

In the table below, the values listed under "Normal Condition" are
reference values. Do not depend solely on these reference values when
deciding whether a part is faulty or not.

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Windshield/WindowGlass - Tundra

Main Body:

MAIN BODY - TECHSTREAM TESTER DISPLAY REFERENCE CHART

2. PERFORM ACTIVE TEST

HINT:

Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be
operated without removing any parts. This non-intrusive functional inspection can be very useful because
intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests
early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while
performing Active Tests.

a. Turn the ignition switch ON.

b. Turn the Techstream on.

c. Enter the following menus: Body Electrical / Main Body / Active Test.

d. According to the display on Techstream, perform the "Active Test".

Main Body:

MAIN BODY - TECHSTREAM TESTER DISPLAY REFERENCE CHART

REMOTE UP / DOWN FUNCTION DOES NOT OPERATE

DESCRIPTION

With the ignition switch ON, the power window regulator master switch transmits remote switch signals to the
regulator switches of the front passenger door power window and rear door power windows* 1, *2.

Then, each regulator switch drives its respective power window regulator motor.

HINT:

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

-

Tester Display

Test Part

Control

Range

Diagnostic

Note

IG OFF P/W Control Permission

Output

Power window control
permission output

ON or OFF

-

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Windshield/WindowGlass - Tundra

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.

HINT:



*1: for Double Cab



*2: for CrewMax

INSPECTION 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 power window regulator master

switch. Check that the remote UP/DOWN function operates normally.

Fig. 10: Identifying Window Lock Switch
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

OK: Remote UP/DOWN function operates normally.

NG: REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY (see
REMOVAL )

OK: END

DRIVER SIDE POWER WINDOW DOES NOT OPERATE WITH POWER WINDOW MASTER
SWITCH

DESCRIPTION

If the driver side manual UP/DOWN function does not operate, there may be a malfunction in the power
window regulator master switch, front power window regulator motor LH or harness and connector.

WIRING DIAGRAM

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Windshield/WindowGlass - Tundra