Toyota Tundra. Manual — part 2573

Fig. 60: Identifying Front Airbag Sensor RH Circuit
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: Go to step 18

OK: Go to next step

16. CHECK FRONT AIRBAG SENSOR LH CIRCUIT

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

b. Turn the ignition switch ON.

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

Standard voltage

TESTER CONNECTION SPECIFIED CONDITION TABLE

d. Turn the ignition switch OFF.

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

f. Using a service wire, connect terminals 30 (+SL) and 28 (-SL) of connector B.

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

Standard Resistance

TESTER CONNECTION SPECIFIED CONDITION TABLE

Tester Connection

Switch Condition Specified Condition

A2-1 (-SL) - Body ground

Ignition switch ON

Below 1 V

A2-2 (+SL) - Body ground

NOTE:

Do not forcibly insert a service wire into the terminals of the
connector when connecting the wire.

Tester Connection

Condition Specified Condition

A2-1 (-SL) - A2-2 (+SL) Always

Below 1 ohms

2009 Toyota Tundra

2009 RESTRAINTS Supplemental Restraint System - Tundra

h. Disconnect the service wire from connector B.

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

Standard Resistance

TESTER CONNECTION SPECIFIED CONDITION TABLE

Fig. 61: Identifying Front Airbag Sensor LH Circuit
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: Go to step 19

OK: Go to next step

17. REPLACE FRONT AIRBAG SENSOR RH AND LH

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 airbag sensor RH and LH (see FRONT AIRBAG SENSOR ).

HINT:

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

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

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

f. Clear the DTCs stored in the memory (see DTC CHECK/CLEAR ).

g. Turn the ignition switch OFF.

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

Tester Connection

Condition Specified Condition

A2-1 (-SL) - A2-2 (+SL)

Always

1 Mohms or higher

A2-1 (-SL) - Body ground

A2-2 (+SL) - Body ground

2009 Toyota Tundra

2009 RESTRAINTS Supplemental Restraint System - Tundra

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

OK: DTC B1610 and B1615 are not output.

HINT:

Codes other than B1610 and B1615 maybe output at this time, but they are not related to this check.

Result

RESULT TABLE

Fig. 62: Identifying Connectors To Center Airbag Sensor Connector Terminal
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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

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

C: END

18. CHECK INSTRUMENT PANEL WIRE

a. Disconnect the instrument panel wire connector from the engine room main wire.

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

c. Turn the ignition switch ON.

Result

Proceed to

NG (for Floor Shift Type)

A

NG (for Column Shift Type)

B

OK

C

2009 Toyota Tundra

2009 RESTRAINTS Supplemental Restraint System - Tundra

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

Standard voltage

TESTER CONNECTION SPECIFIED CONDITION TABLE

e. Turn the ignition switch OFF.

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

g. Using a service wire, connect terminal 27 (-SR) and 29 (+SR) of connector B.

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

Standard Resistance

TESTER CONNECTION SPECIFIED CONDITION TABLE

i. Disconnect the service wire from connector B.

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

Standard Resistance

TESTER CONNECTION SPECIFIED CONDITION TABLE

Tester Connection

Switch Condition Specified Condition

AJ1-1 (-SR) - Body ground

Ignition switch ON

Below 1 V

AJ1-2 (+SR) - Body ground

NOTE:

Do not forcibly insert a service wire into the terminals of the
connector when connecting the wire.

Tester connection

Condition Specified Condition

AJ1-1 (-SR) - AJ8-2 (+SR) Always

Below 1 ohms

Tester Connection

Condition Specified Condition

AJ1-1 (-SR) - AJ1-2 (+SR)

Always

1 Mohms or higher

AJ1-1 (-SR) - Body ground

AJ1-2 (+SR) - Body ground

2009 Toyota Tundra

2009 RESTRAINTS Supplemental Restraint System - Tundra