Toyota Tundra. Manual — part 2608

1. CHECK FRONT SEAT SIDE AIRBAG LH (SIDE SQUIB LH)

a. Turn the ignition switch OFF.

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

c. Disconnect the connector from the front seat side airbag LH.

d. Connect the red wire side of SST (resistance: 2.1 ohms) to connector C.

SST 09843-18061

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

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

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

h. Turn the ignition switch OFF.

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

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

Fig. 165: Identifying Front Seat Side Airbag LH

CAUTION: Never connect the tester to the front seat side airbag LH (side

squib LH) for measurement, as this may lead to a serious injury
due to airbag deployment.

NOTE:



Do not forcibly insert SST into the terminals of the connector
when connecting SST.



Insert SST straight into the terminals of the connector.

2009 Toyota Tundra

2009 RESTRAINTS Supplemental Restraint System - Tundra

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Result

RESULT TABLE

HINT:

Codes other than DTC B1820, B1821, B1822, B1823 maybe output at this time, but they are not
related to this check.

B: REPLACE FRONT SEATBACK ASSEMBLY LH (See FRONT SEAT ASSEMBLY (FOR
MANUAL SEAT) )

C: REPLACE FRONT SEATBACK ASSEMBLY LH (See FRONT SEAT ASSEMBLY (FOR
POWER SEAT) )

D: REPLACE FRONT SEATBACK ASSEMBLY LH (See FRONT SEAT ASSEMBLY (FOR
FOLD DOWN SEAT TYPE) )

A: Go to next step

2. CHECK FLOOR WIRE (SIDE SQUIB LH CIRCUIT)

a. Turn the ignition switch OFF.

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

c. Disconnect SST from connector C.

d. Disconnect the connectors from the center airbag sensor.

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

f. Turn the ignition switch ON.

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

Standard voltage

TESTER CONNECTION SPECIFIED CONDITION TABLE

Result

Proceed to

DTC B1820, B1821, B1822 or B1823 is
not output (w/ Manual Seat)

A

DTC B1820, B1821, B1822 or B1823 is
not output (w/ Power Seat)

B

DTC B1820, B1821, B1822 or B1823 is
not output (for Fold Down Seat Type)

C

DTC B1820, B1821, B1822 or B1823 is
output

D

Tester Connection

Switch Condition Specified Condition

2009 Toyota Tundra

2009 RESTRAINTS Supplemental Restraint System - Tundra

h. Turn the ignition switch OFF.

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

j. Measure the resistance according to the value(s) in the table below.

Fig. 166: Identifying Floor Wire (Side Squib LH Circuit)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Standard Resistance

TESTER CONNECTION SPECIFIED CONDITION TABLE

k. Release the activation prevention mechanism built into connector B (see DIAGNOSIS

SYSTEM ).

l. Measure the resistance according to the value(s) in the table below.

Standard Resistance

TESTER CONNECTION SPECIFIED CONDITION TABLE

P12-1 (SFL+) - Body ground

Ignition switch ON

Below 1 V

P12-2 (SFL-) - Body ground

Tester Connection

Condition Specified Condition

P12-1 (SFL+) - P12-2 (SFL-) Always

Below 1 ohms

Tester Connection

Condition Specified Condition

P12-1 (SFL+) - P12-2 (SFL-)

2009 Toyota Tundra

2009 RESTRAINTS Supplemental Restraint System - Tundra

NG: REPLACE FLOOR WIRE

OK: Go to next step

3. CHECK CENTER AIRBAG SENSOR

a. Connect the connectors to the front seat side airbag LH and the center airbag sensor.

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

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

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

e. Turn the ignition switch OFF.

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

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

Fig. 167: Identifying Center Airbag Sensor
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Result

RESULT TABLE

HINT:

Codes other than DTC B1820, B1821, B1822, B1823 maybe output at this time, but they are not
related to this check.

P12-1 (SFL+) - Body ground

Always

1 Mohms or higher

P12-2 (SFL-) - Body ground

Result

Proceed to

DTC B1820, B1821, B1822 or B1823 is
output (for Column Shift Type)

A

DTC B1820, B1821, B1822 or B1823 is
output (for Floor Shift Type)

B

DTC B1820, B1821, B1822 or B1823 is
not output

C

2009 Toyota Tundra

2009 RESTRAINTS Supplemental Restraint System - Tundra