Toyota Tundra. Manual — part 2579

Fig. 79: Identifying Side Rear Airbag Sensor Circuit Malfunction - Wiring Diagram (Driver Side)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2009 Toyota Tundra

2009 RESTRAINTS Supplemental Restraint System - Tundra

Fig. 80: Identifying Side Rear Airbag Sensor Circuit Malfunction - Wiring Diagram (Front Passenger
Side)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION PROCEDURE

1. CHECK FOR DTC

a. Turn the ignition switch OFF.

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

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

d. Turn the ignition switch OFF.

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

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

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

Result

RESULT TABLE

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

B: Go to step 12

C: Go to next step

2. 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 side airbag sensor

RH.

OK: The connectors are properly connected.

NG: CONNECT CONNECTORS PROPERLY

OK: Go to next step

3. CHECK CONNECTORS

a. Disconnect the connectors from the center airbag sensor and side airbag sensor RH.

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

damaged.

OK: The connectors are not deformed or damaged.

NG: REPLACE NO. 2 FLOOR WIRE

OK: Go to next step

4. CHECK NO. 2 FLOOR WIRE (CENTER AIRBAG SENSOR - SIDE AIRBAG SENSOR RH)

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.

Result

Proceed to

DTC B1630 and B1635 are not output

A

DTC B1630 is output

B

DTC B1635 is output

C

2009 Toyota Tundra

2009 RESTRAINTS Supplemental Restraint System - Tundra

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 8 (BBP+) and 11 (BBP-) 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 SPECIFIED CONDITION TABLE

Fig. 81: Identifying No. 2 Floor Wire (Center Airbag Sensor - Side Airbag Sensor RH)

Tester Connection

Switch Condition Specified Condition

Q4-3 (BBR-) - Body ground

Ignition switch ON

Below 1 V

Q4-4 (BBR+) - 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

Q4-3 (BBR-) - Q4-4 (BBR+) Always

Below 1 ohms

Tester Connection

Condition Specified Condition

Q4-3 (BBR-) - Q4-4 (BBR+)

Always

1 Mohms or higher

Q4-3 (BBR-) - Body ground

Q4-4 (BBR+) - Body ground

2009 Toyota Tundra

2009 RESTRAINTS Supplemental Restraint System - Tundra