Toyota Sequoia (2005). Manual - part 419

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

DI–1471

1665

INSPECTION PROCEDURE

CAUTION:
Be sure to perform the following procedures before troubleshooting to avoid unexpected airbag de-
ployment.
(a)

Turn the ignition switch to the LOCK position.

(b)

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

(c)

Disconnect the connectors from the airbag sensor assembly.

(d)

Disconnect the connectors from the steering wheel pad.

(e)

Disconnect the connectors from the front passenger airbag assembly.

(f)

w/ Side and curtain shield airbag:
Disconnect the connectors from the side airbag assembly LH and RH.

(g)

w/ Side and curtain shield airbag:
Disconnect the connectors from the curtain shield airbag assembly LH and RH.

(h)

Disconnect the connectors from the front seat outer belt LH and RH.

1

Check DTC.

CHECK:
(a)

Proceed to each step according to how to read DTC.
(1)

If using the hand–held tester (read the 5–digit of DTC):
Using the hand–held tester, check the DTCs (see page 

DI–1147

).

RESULT:

DTC B1905 is output.

A

DTC B1906 is output.

B

DTC B1907 is output.

C

DTC B1908 is output.

D

(2)

If not using the hand–held tester (read the 2–digit of DTC):
Check the DTCs (see page 

DI–1147

).

RESULT:

DTC 74 is output.

E

HINT:
Codes other than DTC B1905, B1906, B1907, B1908 and DTC 74 may be output at this time, but they are
not related to this check.

B

Go to step 4.

C

Go to step 5.

D

Go to step 6.

E

Go to step 7.

A

H01016

H43108

H23601

P/T Squib LH

PL–

PL+

Airbag
Sensor
Assembly

Floor Wire No. 2

A

B

C

D

P10

DI–1472

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

1666

2

Check connector.

CHECK:
Check that the floor wire No. 2 connector (on the front seat outer belt LH side) is not damaged.
OK:

The lock button is not disengaged, or the claw of the lock is not deformed or damaged.

NG

Repair or replace floor wire No. 2.

OK

3

Check floor wire No. 2 (short).

PREPARATION:
Release the activation prevention mechanism built into con-
nector ”B” (see page 

DI–1137

).

CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:

Tester Connection

Condition

Specified Condition

P10–1 (PL+) – 

P10–2 (PL–)

Always

1 M

Ω

 or Higher

NG

Repair or replace floor wire No. 2.

OK

Go to step 10.

H01016

H43108

H23601

P/T Squib LH

PL–

PL+

Airbag
Sensor
Assembly

Floor Wire No. 2

A

B

C

D

P10

H01016

H43108

H23601

P/T Squib LH

PL–

PL+

Airbag
Sensor
Assembly

Floor Wire No. 2

A

B

C

D

P10

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

DI–1473

1667

4

Check floor wire No. 2 (open).

CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:

Tester Connection

Condition

Specified Condition

P10–1 (PL+) – 

P10–2 (PL–)

Always

Below 1 

Ω

NG

Repair or replace floor wire No. 2.

OK

Go to step 11.

5

Check floor wire No. 2 (short to ground).

CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:

Tester Connection

Condition

Specified Condition

P10–1 (PL+) – 

Body ground

Always

1 M

Ω

 or higher

P10–2 (PL–) – 

Body ground

Always

1 M

Ω

 or higher

NG

Repair or replace floor wire No. 2.

OK

Go to step 11.

H01016

H43108

H23601

P/T Squib LH

PL–

PL+

Airbag
Sensor
Assembly

Floor Wire No. 2

A

B

C

D

P10

DI–1474

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

1668

6

Check floor wire No. 2 (short to B+).

PREPARATION:
Connect the negative (–) terminal cable to the battery, and wait
for at least 2 seconds.
CHECK:
(a)

Turn the ignition switch to the ON position.

(b)

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

OK:

Tester Connection

Condition

Specified Condition

P10–1 (PL+) – 

Body ground

Ignition switch ON

Below 1 V

P10–2 (PL–) – 

Body ground

Ignition switch ON

Below 1 V

NG

Repair or replace floor wire No. 2.

OK

Go to step 11.

7

Check connector.

CHECK:
Check that the floor wire No. 2 connector (on the front seat outer belt LH side) is not damaged.
OK:

The lock button is not disengaged, or the claw of the lock is not deformed or damaged.

NG

Repair or replace floor wire No. 2.

OK