Toyota Tundra. Manual — part 716

TERMINALS OF ECU

1. CHECK POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY

Fig. 8: Identifying ECU Power Window Regulator Master Switch Assembly Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

a. Disconnect the N2 master switch connector.

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

for Regular Cab:

AUTO DOWN FUNCTION DOES

NOT OPERATE

Power windows do not operate
at all

Power window regulator master
switch assembly

POWER WINDOWS DO NOT

OPERATE AT ALL

Harness or connector

POWER WINDOWS DO NOT

OPERATE AT ALL

Key-off operation function
operates even if operating
conditions are not satisfied

Main body ECU

KEY-OFF OPERATION

FUNCTION OPERATES EVEN IF

OPERATING CONDITIONS ARE

NOT SATISFIED

Lighting system

HOW TO PROCEED WITH

TROUBLESHOOTING

Power back window does not
operate*2

BACK P/W No. 1 relay

BACK WINDOW GLASS (FOR

CREWMAX)

BACK P/W No. 2 relay

BACK WINDOW GLASS (FOR

CREWMAX)

Power window regulator switch
assembly (for back window)

BACK POWER WINDOW SWITCH

Back door power window
regulator motor assembly

BACK WINDOW GLASS (FOR

CREWMAX)

HINT:



*1: for Double Cab



*2: for CrewMax

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Windshield/WindowGlass - Tundra

REGULAR CAB ECU CONNECTOR TERMINALS AND SPECIFIED CONDITION

for Double Cab:

DOUBLE CAB ECU CONNECTOR TERMINALS AND SPECIFIED CONDITION

for CrewMax:

CREWMAX ECU CONNECTOR TERMINALS AND SPECIFIED CONDITION

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

c. Reconnect the N2 master switch connector.

d. Measure the voltage according to the value(s) in the table below.

for Regular Cab:

REGULAR CAB ECU CONNECTOR TERMINALS AND SPECIFIED CONDITION

Terminal No.

(Symbols)

Wiring Color

Terminal

Description

Condition

Specified

Condition

N2-15 (B) - Body

ground

P - Body ground

Ignition power

supply

Ignition switch

OFF

Below 1 V

N2-15 (B) - Body

ground

P - Body ground

Ignition power

supply

Ignition switch

ON

11 to 14 V

N2-7 (E) - Body

ground

W-B - Body

ground

Ground

Always

Below 1 ohms

Terminal No.

(Symbols)

Wiring Color

Terminal

Description

Condition

Specified

Condition

N2-6 (B) - Body

ground

P - Body ground

Ignition power

supply

Ignition switch

OFF

Below 1 V

N2-6 (B) - Body

ground

P - Body ground

Ignition power

supply

Ignition switch

ON

11 to 14 V

N2-1 (E) - Body

ground

W-B - Body

ground

Ground

Always

Below 1 ohms

Terminal No.

(Symbols)

Wiring Color

Terminal

Description

Condition

Specified

Condition

N2-6 (B) - Body

ground

P - Body ground

Ignition power

supply

Ignition switch

OFF

Below 1 V

N2-6 (B) - Body

ground

P - Body ground

Ignition power

supply

Ignition switch

ON

11 to 14 V

N2-1 (E) - Body

ground

W-B - Body

ground

Ground

Always

Below 1 ohms

Terminal

No.

(Symbols)

Wiring

Color

Terminal

Description

Condition

Specified

Condition

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Windshield/WindowGlass - Tundra

for Double Cab:

DOUBLE CAB ECU CONNECTOR TERMINALS AND SPECIFIED CONDITION

N2-10 (U) -

N2-7 (E)

LG - W-

B

Driver side door

power window UP

operation

Ignition switch ON, driver side

door power window regulator

switch OFF --> UP

Below 1 V -->

11 to 14 V

N2-12 (D) -

N2-7 (E)

SB - W-

B

Driver side door

power window

DOWN operation

Ignition switch ON, driver side

door power window regulator

switch OFF --> DOWN

Below 1 V -->

11 to 14 V

N2-12 (D) -

N2-7 (E)

SB - W-

B

Driver side door

power window

AUTO DOWN

operation

Ignition switch ON, driver side

door glass fully closed --> power

window AUTO DOWN operation -

-> driver side door glass fully open

Below 1 V -->

11 to 14 V -->

Below 1 V

N2-16 (U) -

N2-7 (E)

Y - W-B

Front passenger side

door power window

UP operation

Ignition switch ON, front passenger

side door power window regulator

switch OFF --> UP

Below 1 V -->

11 to 14 V

N2-18 (D) -

N2-7 (E)

G - W-B

Front passenger side

door power window

DOWN operation

Ignition switch ON, front passenger

side door power window regulator

switch OFF --> DOWN

Below 1 V -->

11 to 14 V

Terminal

No.

(Symbols)

Wiring

Color

Terminal

Description

Condition

Specified

Condition

N2-3 (U) -

N2-1 (E)

LG - W-

B

Driver side door

power window UP

operation

Ignition switch ON, driver side

door power window regulator

switch OFF --> UP

Below 1 V -->

11 to 14 V

N2-4 (D) -

N2-1 (E)

SB - W-

B

Driver side door

power window

DOWN operation

Ignition switch ON, driver side

door power window regulator

switch OFF --> DOWN

Below 1 V -->

11 to 14 V

N2-4 (D) -

N2-1 (E)

SB - W-

B

Driver side door

power window

AUTO DOWN

operation

Ignition switch ON, driver side

door glass fully closed --> power

window AUTO DOWN operation -

-> driver side door glass fully open

Below 1 V -->

11 to 14 V -->

Below 1 V

N2-16 (U) -

N2-1 (E)

Y - W-B

Front passenger side

door power window

UP operation

Ignition switch ON, front passenger

side door power window regulator

switch OFF --> UP

Below 1 V -->

11 to 14 V

N2-15 (D) -

N2-1 (E)

G - W-B

Front passenger side

door power window

DOWN operation

Ignition switch ON, front passenger

side door power window regulator

switch OFF --> DOWN

Below 1 V -->

11 to 14 V

N2-12 (U) -

N2-1 (E)

V - W-B

Rear LH side door

power window UP

operation

Ignition switch ON, rear LH side

door power window regulator

switch OFF --> UP

Below 1 V -->

11 to 14 V

N2-13 (D) -

N2-1 (E)

B - W-B

Rear LH side door

power window

DOWN operation

Ignition switch ON, rear LH side

door power window regulator

switch OFF --> DOWN

Below 1 V -->

11 to 14 V

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Windshield/WindowGlass - Tundra

for CrewMax:

CREWMAX ECU CONNECTOR TERMINALS AND SPECIFIED CONDITION

If the result is not as specified, the master switch may be malfunctioning.

2. CHECK MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK)

N2-10 (U) -

N2-1 (E)

O - W-B

Rear RH side door
power window UP

operation

Ignition switch ON, rear RH side

door power window regulator

switch OFF --> UP

Below 1 V -->

11 to 14 V

N2-18 (D) -

N2-1 (E)

LG - W-

B

Rear RH side door

power window

DOWN operation

Ignition switch ON, rear RH side

door power window regulator

switch OFF --> DOWN

Below 1 V -->

11 to 14 V

Terminal

No.

(Symbols)

Wiring

Color

Terminal

Description

Condition

Specified

Condition

N2-3 (U) -

N2-1 (E)

LG - W-

B

Driver side door

power window UP

operation

Ignition switch ON, driver side

door power window regulator

switch OFF --> UP

Below 1 V -->

11 to 14 V

N2-4 (D) -

N2-1 (E)

SB - W-

B

Driver side door

power window

DOWN operation

Ignition switch ON, driver side

door power window regulator

switch OFF --> DOWN

Below 1 V -->

11 to 14 V

N2-4 (D) -

N2-1 (E)

SB - W-

B

Driver side door

power Window
AUTO DOWN

operation

Ignition switch ON, driver side

door glass fully closed --> power

window AUTO DOWN operation -

-> driver side door glass fully open

Below 1 V -->

11 to 14 V -->

Below 1 V

N2-16 (U) -

N2-1 (E)

Y - W-B

Front passenger side

door power window

UP operation

Ignition switch ON, front passenger

side door power window regulator

switch OFF --> UP

Below 1 V -->

11 to 14 V

N2-15 (D) -

N2-1 (E)

G - W-B

Front passenger side

door power window

DOWN operation

Ignition switch ON, front passenger

side door power window regulator

switch OFF --> DOWN

Below 1 V -->

11 to 14 V

N2-12 (U) -

N2-1 (E)

V - W-B

Rear LH side door

power window UP

operation

Ignition switch ON, rear LH side

door power window regulator

switch OFF --> UP

Below 1 V -->

11 to 14 V

N2-13 (D) -

N2-1 (E)

B-W-B

Rear LH side door

power window

DOWN operation

Ignition switch ON, rear LH side

door power window regulator

switch OFF --> DOWN

Below 1 V -->

11 to 14 V

N2-10 (U) -

N2-1 (E)

O - W-B

Rear RH side door
power window UP

operation

Ignition switch ON, rear RH side

door power window regulator

switch OFF --> UP

Below 1 V -->

11 to 14 V

N2-18 (D) -

N2-1 (E)

LG - W-

B

Rear RH side door

power window

DOWN operation

Ignition switch ON, rear RH side

door power window regulator

switch OFF --> DOWN

Below 1 V -->

11 to 14 V

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Windshield/WindowGlass - Tundra