Toyota Tundra. Manual — part 2648

A: Go to next step

21. READ VALUE USING TECHSTREAM (SEAT BELT TENSION SENSOR)

a. Fasten the passenger side seat belt.

b. Turn the ignition switch ON, and wait for at least 60 seconds.

c. Using the Techstream, read the "Data List" (see DTC CHECK/CLEAR ).

Occupant Detection:

OCCUPANT DETECTION CONDITION TABLE

Result

RESULT TABLE

Tester Display

Test Part

Control Range

Diagnostic

Note

FL Sensor Voltage

Front left sensor voltage/ Min.: 0 V
Max.: 19.8 V

0 to 4.7 V

-

FR Sensor Voltage

Front right sensor voltage/ Min.: 0 V
Max.: 19.8 V

0 to 4.7 V

-

RL Sensor Voltage

Rear left sensor voltage/ Min.: 0 V
Max.: 19.8 V

0 to 4.7 V

-

RR Sensor Voltage

Rear right sensor voltage/ Min.: 0 V
Max.: 19.8 V

0 to 4.7 V

-

FL Sensor Weight
Info

Front left sensor weight information/
Min.: -17 kg (-37.48 lb)
Max.: 27 kg (59.52 lb)

-17 to 27 kg (-37.48 to

59.52 lb)

-

FR Sensor Weight
Info

Front right sensor weight information/
Min.: -17 kg (-37.48 lb)
Max.: 27 kg (59.52 lb)

-17 to 27 kg (-37.48 to

59.52 lb)

-

RL Sensor Weight
Info

Rear left sensor weight information/
Min.: -17 kg (-37.48 lb)
Max.: 37 kg (81.57 lb)

-17 to 37 kg (-37.48 to

81.57 lb)

-

RR Sensor Weight
Info

Rear right sensor weight information/
Min.: -17 kg (-37.48 lb)
Max.: 37 kg (81.57 lb)

-17 to 37 kg (-37.48 to

81.57 lb)

-

Total Weight
Information

Total weight information/ Min.: -68 kg
(-149.91 lb)
Max.: 128 kg (282.19 lb)

-68 to 128 kg (-149.91

to 282.19 lb)

-

Result

Proceed to

Display is as specified in normal condition

A

Display is not as specified in normal condition (for Manual Seat)

B

Display is not as specified in normal condition (for Power Seat)

C

2009 Toyota Tundra

2009 RESTRAINTS Supplemental Restraint System - Tundra

B: REPLACE OCCUPANT DETECTION ECU (See FRONT SEAT ASSEMBLY (FOR FOLD
DOWN SEAT TYPE) )

C: REPLACE OCCUPANT DETECTION ECU (See FRONT SEAT ASSEMBLY (FOR POWER
SEAT) )

A: Go to next step

22. REPLACE FRONT SEAT FRAME WITH ADJUSTER ASSEMBLY RH

a. Turn the ignition switch OFF.

b. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.

c. Replace the front seat from with adjuster RH (see FRONT POWER SEAT MOTOR

ASSEMBLY (FOR POWER SEAT) ).

23. PERFORM ZERO POINT CALIBRATION

a. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.

b. Connect the Techstream to the DLC3.

c. Turn the ignition switch ON, and wait for at least 60 seconds.

d. Using the Techstream, perform the zero point calibration (see INITIALIZATION ).

24. PERFORM SENSITIVITY CHECK

a. Using the Techstream, perform the sensitivity check (see INITIALIZATION ).

Standard range:

27 to 33 kg (59.5 to 72.8 lb)

NEXT: END

25. CHECK CONNECTOR

a. Disconnect the connectors from the occupant classification ECU and front seat inner belt RH.

b. Check that the connectors (on the occupant classification ECU side and front seat inner belt RH

side) are not damaged.

OK: Connectors are not deformed or damaged.

NG: REPLACE NO. 2 FLOOR WIRE

OK: Go to next step

26. REPLACE FRONT SEAT INNER BELT ASSEMBLY RH

a. Turn the ignition switch OFF.

b. Replace front seat inner belt RH (see FRONT SEAT INNER BELT ASSEMBLY ).

27. PERFORM ZERO POINT CALIBRATION

a. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.

2009 Toyota Tundra

2009 RESTRAINTS Supplemental Restraint System - Tundra

b. Connect the Techstream to the DLC3.

c. Turn the ignition switch ON, and wait for at least 60 seconds.

d. Using the Techstream, perform zero point calibration (see INITIALIZATION ).

28. PERFORM SENSITIVITY CHECK

a. Using the Techstream, perform the sensitivity check (see INITIALIZATION ).

Standard range:

27 to 33 kg (59.5 to 72.8 lb)

NEXT: END

STEERING PAD

COMPONENTS

Fig. 230: Identifying Steering Pad Replacement Components With Torque Specifications (1 Of 2)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 231: Identifying Steering Pad Replacement Components With Torque Specifications (2 Of 2)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2009 Toyota Tundra

2009 RESTRAINTS Supplemental Restraint System - Tundra

ON-VEHICLE INSPECTION

1. CHECK STEERING PAD (VEHICLE NOT INVOLVED IN COLLISION)

a. Perform a diagnostic system check (see DIAGNOSIS SYSTEM ).

b. With the steering pad installed on the vehicle, perform a visual check. If there are any defects as

mentioned below, replace the steering pad with a new one:

Cuts, minute cracks or marked discoloration on the steering pad top surface or in the grooved
portion.

Fig. 232: Identifying Steering Pad
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2. CHECK STEERING PAD (VEHICLE INVOLVED IN COLLISION AND AIRBAG HAS NOT

DEPLOYED)

a. Perform a diagnostic system check (see DIAGNOSIS SYSTEM ).

b. With the steering pad removed from the vehicle, perform a visual check. If there are any defects as

mentioned below, replace the steering pad or steering wheel assembly with a new one:



Cuts, minute cracks or marked discoloration on the steering pad top surface or in the grooved
portion.



Cracks or other damage to the connectors.



Deformation of the steering pad contact plate of the steering pad.



Deformation of the steering wheel.



There should be no interference between the steering pad and steering wheel assembly, and
the clearance should be uniform all the way around when the new steering pad is installed on
the steering wheel assembly.

REMOVAL

1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

CAUTION: For removal and installation procedures of the steering pad, be

sure to follow the correct procedure.

2009 Toyota Tundra

2009 RESTRAINTS Supplemental Restraint System - Tundra