Toyota Tundra. Manual — part 2646

Occupant Detection:

OCCUPANT DETECTION CONDITION TABLE

OK: Display changed correctly according to operation of buckle switch.

NG: Go to step 9

OK: Go to next step

5. READ VALUE USING TECHSTREAM (OCCUPANT DETECTION 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

Tester Display

Measure Item/Range

Normal Condition

Diagnostic

Note

Passenger
Buckle SW

Passenger side buckle
switch/Set, Unset or NG

Set: Passenger side seat belt is
fastened
Unset: Passenger side seat belt is
unfastened
NG: Passenger side seat belt is
malfunctioning

-

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)

-

2009 Toyota Tundra

2009 RESTRAINTS Supplemental Restraint System - Tundra

Result

RESULT TABLE

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

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

A: Go to next step

6. 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 frame with adjuster RH (see INITIALIZATION ).

HINT:

Perform the inspection using parts from a normal vehicle when possible.

7. 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 ).

8. PERFORM SENSITIVITY CHECK

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

Standard range:

RR Sensor Weight
Info

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

-1.7 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

27 to 33 kg (59.5 to 72.8 lb)

NEXT: END

9. 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

10. REPLACE FRONT SEAT INNER BELT 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 inner belt RH (see FRONT SEAT INNER BELT ASSEMBLY ).

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

11. 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 ).

12. 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

13. CHECK INTEGRATION CONTROL AND PANEL ASSEMBLY (PASSENGER AIRBAG

ON/OFF INDICATOR)

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

b. The passenger airbag ON/OFF indicator (ON and OFF) comes on for approximately 4 seconds,

then turns off for approximately 2 seconds.

c. Approximately 6 seconds after the ignition switch is turned ON, check that the passenger airbag

ON/OFF indicator indicates ON/OFF according to the condition listed below.

Result

2009 Toyota Tundra

2009 RESTRAINTS Supplemental Restraint System - Tundra

RESULT TABLE

OK: Passenger airbag ON/OFF indicator illuminates as specified in table above.

OK: Go to step 17

NG: Go to next step

14. RETIGHTEN FRONT SEAT ASSEMBLY RH BOLT

a. Turn the ignition switch OFF.

b. Loosen the 4 installation bolts of the front seat RH.

c. Tighten the 4 installation bolts of the front seat RH to the specified torque.



for Manual Seat (see INSTALLATION )



for Power Seat (see INSTALLATION )

Torque: 37 N*m (377 kgf*cm, 27 ft.*lbf)

15. PERFORM ZERO POINT CALIBRATION

a. Connect the Techstream to the DLC3.

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

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

OK: Zero point calibration is completed using tester.

NG: Go to step 16

OK: END

16. READ VALUE USING TECHSTREAM (PASSENGER SIDE BUCKLE SWITCH)

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

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

Occupant Detection:

Front Seat Passenger

Passenger Airbag Cutoff

Switch Position

ON

Indicator

OFF

Indicator

SRS Warning

Light

Adult seated

ON

ON

OFF

OFF

Adult seated

OFF

OFF

ON

OFF

Child seated/Child
restraint system set

AUTO

OFF

ON

OFF

Child seated/Child
restraint system set

OFF

OFF

ON

OFF

Vacant

ON

OFF

OFF

OFF

Vacant

OFF

OFF

ON

OFF

2009 Toyota Tundra

2009 RESTRAINTS Supplemental Restraint System - Tundra