Toyota Tundra. Manual — part 2569

assembly

B1833/57

Short to B+ in Driver Side Curtain
Shield Squib Circuit



Floor wire



Curtain shield airbag
assembly LH (Curtain
shield squib LH)



Center airbag sensor
assembly

B1835/58

Short in Front Passenger Side
Curtain Shield Squib Circuit



No. 2 floor wire



Curtain shield airbag
assembly RH (Curtain
shield squib RH)



Center airbag sensor
assembly

B1836/58

Open in Front Passenger Side
Curtain Shield Squib Circuit



No. 2 floor wire



Curtain shield airbag
assembly RH (Curtain
shield squib RH)



Center airbag sensor
assembly

B1837/58

Short to GND in Front Passenger
Side Curtain Shield Squib Circuit



No. 2 floor wire



Curtain shield airbag
assembly RH (Curtain
shield squib RH)



Center airbag sensor
assembly

B1838/58

Short to B+ in Front Passenger
Side Curtain Shield Squib Circuit



No. 2 floor wire



Curtain shield airbag
assembly RH (Curtain
shield squib RH)



Center airbag sensor
assembly

B1900/73

Short in Front Driver Side
Pretensioner Squib Circuit



Floor wire



Front seat outer belt
assembly LH (Front
pretensioner squib LH)



Center airbag sensor
assembly

B1901/73

Open in Front Driver Side
Pretensioner Squib Circuit



Floor wire



Front seat outer belt
assembly LH (Front
pretensioner squib LH)

2009 Toyota Tundra

2009 RESTRAINTS Supplemental Restraint System - Tundra

HINT:



Center airbag sensor
assembly

B1902/73

Short to GND in Front Driver Side
Pretensioner Squib Circuit



Floor wire



Front seat outer belt
assembly LH (Front
pretensioner squib LH)



Center airbag sensor
assembly

B1903/73

Short to B+ in Front Driver Side
Pretensioner Squib Circuit



Floor wire



Front seat outer belt
assembly LH (Front
pretensioner squib LH)



Center airbag sensor
assembly

B1905/74

Short in Front Passenger Side
Pretensioner Squib Circuit



No. 2 floor wire



Front seat outer belt
assembly RH (Front
pretensioner squib RH)



Center airbag sensor
assembly

B1906/74

Open in Front Passenger Side
Pretensioner Squib Circuit



No. 2 floor wire



Front seat outer belt
assembly RH (Front
pretensioner squib RH)



Center airbag sensor
assembly

B1907/74

Short to GND in Front Passenger
Side Pretensioner Squib Circuit



No. 2 floor wire



Front seat outer belt
assembly RH (Front
pretensioner squib RH)



Center airbag sensor
assembly

B1908/74

Short to B+ in Front Passenger
Side Pretensioner Squib Circuit



No. 2 floor wire



Front seat outer belt
assembly RH (Front
pretensioner squib RH)



Center airbag sensor
assembly

2009 Toyota Tundra

2009 RESTRAINTS Supplemental Restraint System - Tundra

*1: for Regular Cab

*2: for Double Cab and CrewMax

DTC B1000/31: CENTER AIRBAG SENSOR ASSEMBLY MALFUNCTION

DESCRIPTION

The center airbag sensor consists of the airbag sensor, the safing sensor, the drive circuit, the diagnosis circuit,
the ignition control, etc.

If the center airbag sensor receives signals from the airbag sensor, it determines whether the SRS should be
activated.

DTC B1000/31 is recorded when a malfunction is detected in the center airbag sensor.

DTC TROUBLE DETECTION CONDITION TABLE

HINT:

When a trouble code is displayed simultaneously with B1000/31, repair the malfunction indicated by this code
(except B1000/31) first.

INSPECTION PROCEDURE

1. CHECK CENTER AIRBAG SENSOR

a. Turn the ignition switch OFF.

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

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

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

e. Clear the DTCs (see DTC CHECK/CLEAR ).

f. Turn the ignition switch OFF.

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

DTC Code

Detection Condition

Trouble Area

B1000/31

Center airbag sensor malfunction

Center airbag sensor assembly

NOTE:



When disconnecting the cable from the negative (-) battery terminal while
performing repairs, some systems need to be initialized after the cable is
reconnected (see INITIALIZATION ).



After the ignition switch is turned OFF, the navigation system requires
approximately 90 seconds to record various types of memory and
settings. As a result, after turning the ignition switch OFF, wait 90 seconds
or more before disconnecting the cable from the negative (-) battery
terminal.

2009 Toyota Tundra

2009 RESTRAINTS Supplemental Restraint System - Tundra

h. Check for DTCs (see DTC CHECK/CLEAR ).

Result

RESULT TABLE

A: REPLACE CENTER AIRBAG SENSOR ASSEMBLY (See CENTER AIRBAG SENSOR
ASSEMBLY (for Column Shift Type) )

B: REPLACE CENTER AIRBAG SENSOR ASSEMBLY (See CENTER AIRBAG SENSOR
ASSEMBLY (for Floor Shift Type) )

C: USE SIMULATION METHOD TO CHECK (See DIAGNOSIS SYSTEM )

DTC B1610/13, B1615/14: FRONT AIRBAG SENSOR RH MALFUNCTION; FRONT AIRBAG
SENSOR LH MALFUNCTION

DESCRIPTION

The front airbag sensor LH and RH consists of the diagnostic circuit and the frontal deceleration sensor, etc.

If the center airbag sensor receives signals from the frontal deceleration sensor, it determines whether the SRS
should be activated.

DTC B1610/13 or B1615/14 is recorded when a malfunction is detected in the front airbag sensor LH and RH
circuit.

DTC TROUBLE DETECTION CONDITION TABLE

WIRING DIAGRAM

Result

Proceed to

DTC B1000 is not output

A

DTC B1000 is output (for Column Shift
Type)

B

DTC B1000 is output (for Floor Shift Type)

C

DTC Code

Detection Condition

Trouble Area

B1610/13

When both conditions below are met:



Front airbag sensor RH malfunction



Center airbag sensor malfunction



Front airbag sensor RH



Center airbag sensor assembly

B1615/14

When both conditions below are met:



Front airbag sensor LH malfunction



Center airbag sensor malfunction



Front airbag sensor LH



Center airbag sensor assembly

2009 Toyota Tundra

2009 RESTRAINTS Supplemental Restraint System - Tundra