Toyota Tundra. Manual — part 2525

Techstream - Select: Body Electrical / (desired system) / Data List.

e. According to the display on tester, read the "DATA LIST" or "Data List".

Techstream

Combination Meter:

COMBINATION METER TECHSTREAM REFERENCE

SRS AIRBAG:

SRS AIRBAG TECHSTREAM REFERENCE

2. PERFORM ACTIVE TEST

HINT:

Using 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. Connect Techstream to the DLC3.

b. Turn the ignition switch ON.

c. Turn the tester on.

d. Enter the following menus:

Tester Display

Test Part

Control Range

Diagnostic

Note

P-Seatbelt

Warning

Buzzer

Front passenger side seat belt
warning buzzer setting/ON or
OFF

ON: Front passenger side seat
belt warning buzzer ON
setting
OFF: Front passenger side
seat belt warning buzzer OFF
setting

-

Tester Display

Measurement Item/Range

Normal

Condition

Diagnostic

Note

Driver Buckle

SW

Driver Buckle SW/ UNSET: The seat belt
is not fastened
SET: The seat belt is fastened NG: Data is
not determined

UNSET/SET

-

Passenger

Buckle SW

Passenger Buckle SW/ UNSET: The seat
belt is not fastened
SET: The seat belt is fastened NG: Data is
not determined

UNSET/SET

-

2009 Toyota Tundra

2009 RESTRAINTS Seat Belt - Tundra

Techstream - Select: Body Electrical / Combination Meter / Active Test.

e. According to the display on tester, perform the "ACTIVE TEST" or "Active Test".

Techstream

Combination Meter:

COMBINATION METER TECHSTREAM REFERENCE

DRIVER SIDE SEAT BELT WARNING LIGHT DOES NOT OPERATE

DESCRIPTION

When the ignition switch is ON, the center airbag sensor transmits front seat inner belt state signals to the meter
ECU through CAN. If the driver seat belt is not fastened, the meter ECU blinks the driver side seat belt warning
light. If the seat belt is fastened, the warning light goes off.

WIRING DIAGRAM

Fig. 8: Driver Side Seat Belt Warning Light Does Not Operate - Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION PROCEDURE

Tester Display

Test Part

Control

Range

Diagnostic

Note

Indicat. Lamp D-seat

Belt

Driver side seat belt warning light

ON or OFF

-

Indicat. Lamp P-seat

Belt

Front passenger side seat belt
warning tight

ON or OFF

-

2009 Toyota Tundra

2009 RESTRAINTS Seat Belt - Tundra

1. CHECK FOR DTC

a. Check for DTCs.

1. for CAN communication system (See CAN COMMUNICATION SYSTEM ).

2. for Airbag system (see DIAGNOSTIC TROUBLE CODE TABLE ).

Result:

DTC RESULT CHART

B: Go TO CAN COMMUNICATION SYSTEM

C: Go TO AIRBAG SYSTEM (See DIAGNOSTIC TROUBLE CODE TABLE )

A: Go to next step.

2. PERFORM ACTIVE TEST BY TECHSTREAM (DRIVER SEAT BELT WARNING LIGHT)

a. Operate Techstream according to the steps on the display and select "ACTIVE TEST" or "Active

Test" (see DATA LIST / ACTIVE TEST ). Driver side seat belt warn

Techstream

Combination Meter:

COMBINATION METER TECHSTREAM REFERENCE

OK: Driver side seat belt warning light condition can be switched by "ACTIVE TEST"
or "Active Test".

NG: REPLACE COMBINATION METER (See REMOVAL )

OK: Go to next step.

3. REPLACE FRONT SEAT INNER BELT ASSEMBLY LH

a. Temporarily replace the front seat inner belt LH with a new or normally functioning one (see

REMOVAL ).

4. CHECK DRIVER SIDE SEAT BELT WARNING LIGHT

a. Check the driver side seat belt warning light function (see OPERATION CHECK ).

Result

Proceed to

DTC is not output

A

CAN system DTC is output

B

Airbag system DTC is output

C

Item

Test Part

Control

Range

Diagnostic

Note

Indicat. Lamp D-seat

Belt

Driver side seat belt warning
light

ON or OFF

-

2009 Toyota Tundra

2009 RESTRAINTS Seat Belt - Tundra

OK: Driver side seat belt warning light operates normally.

NG: REPLACE COMBINATION METER (See REMOVAL )

OK: END (FRONT SEAT INNER BELT LH IS DEFECTIVE)

FRONT PASSENGER SIDE SEAT BELT WARNING LIGHT MALFUNCTION

DESCRIPTION

The meter ECU detects the state of the front seat inner belt RH when the front passenger side seat is occupied
with the ignition switch ON. If the front passenger side seat belt is not fastened, the front passenger side seat
belt warning light on the integration control and panel blinks. If the seat belt is fastened, the warning light goes
off.

WIRING DIAGRAM

2009 Toyota Tundra

2009 RESTRAINTS Seat Belt - Tundra