Toyota Tundra. Manual — part 2571

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

Result

RESULT TABLE

HINT:

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

A: Go to step 12

B: REPLACE FRONT AIRBAG SENSOR RH (See FRONT AIRBAG SENSOR )

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

6. 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.

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

Result

Proceed to

DTC B1610 is output

A

DTC B1615 is output

B

DTC B1610 and B1615 are not output

C

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.

2009 Toyota Tundra

2009 RESTRAINTS Supplemental Restraint System - Tundra

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

Fig. 56: Identifying Instrument Panel Wire
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPLACE INSTRUMENT PANEL WIRE

OK: REPLACE ENGINE ROOM MAIN WIRE

7. CHECK CONNECTION OF CONNECTORS

a. Turn the ignition switch OFF.

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

c. Check that the connectors are properly connected to the center airbag sensor and the front airbag

sensor LH.

OK: The connectors are properly connected.

NG: CONNECT CONNECTORS PROPERLY

Tester connection

Condition Specified Condition

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

OK: Go to next step

8. CHECK CONNECTORS

a. Disconnect the connectors from the center airbag sensor and front airbag sensor LH.

b. Check that the connectors (on the center airbag sensor side and front airbag sensor LH side) are not

damaged.

OK: The connectors are not deformed or damaged.

NG: REPLACE HARNESS AND CONNECTOR

OK: Go to next step

9. 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

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

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

TESTER CONNECTION SPECIFIED CONDITION TABLE

Fig. 57: Identifying Front Airbag Sensor LH Circuit
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: Go to step 11

OK: Go to next step

10. CHECK FRONT AIRBAG SENSOR LH

a. Connect the connectors to the center airbag sensor.

b. Interchange the front airbag sensor LH with RH and connect the connectors to them.

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

f. Turn the ignition switch OFF.

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

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

Result

RESULT TABLE

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

Result

Proceed to

DTC B1610 is output

A

DTC B1615 is output (for Floor Shift
Type)

B

DTC B1610 and B1615 are not output

C

2009 Toyota Tundra

2009 RESTRAINTS Supplemental Restraint System - Tundra