Toyota Sequoia (2005). Manual - part 404

H23635

P2–

P2+

P Squib 
(Dual stage –
2nd step)

A

B

C

D

A22

Cowl Wire

Airbag
Sensor
Assembly

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

DI–1411

1605

6

Check cowl wire (P squib circuit, dual stage – 2nd step).

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

A22–3 (P2+) – 

Body ground

Ignition switch ON

Below 1 V

A22–4 (P2–) – 

Body ground

Ignition switch ON

Below 1 V

PREPARATION:
(a)

Turn the ignition switch to the LOCK position.

(b)

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

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

Tester connection

Condition

Specified Condition

A22–3 (P2+) – 

A22–4 (P2–)

Always

Below 1 

Ω

A22–3 (P2+) – 

Body ground

Always

1 M

Ω

 or higher

A22–4 (P2–) – 

Body ground

Always

1 M

Ω

 or higher

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

A22–3 (P2+) – 

A22–4 (P2–)

Always

1 M

Ω

 or higher

NG

Repair or replace cowl wire.

OK

H10600

H01024

H01078

H23362

Airbag
Sensor
Assembly

DTC 54

DLC3

TC

CG

P Squib 
(Dual stage –
2nd step)

DC

DI–1412

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

1606

7

Replace front passenger airbag assembly (P squib, dual stage – 2nd step).

PREPARATION:
(a)

Replace the front passenger airbag assembly (see page

RS–33

).

HINT:
Perform the inspection using parts from a normal vehicle if pos-
sible.
(b)

Connect the connectors to the airbag sensor assembly.

(c)

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, and wait for at
least 60 seconds.

(b)

Clear the DTCs stored in memory (see page 

DI–1147

).

(c)

Turn the ignition switch to the LOCK position.

(d)

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

(e)

Check the DTCs (see page 

DI–1147

).

OK:

DTC 54 is not output.

HINT:
Codes other than DTC 54 may be output at this time, but they
are not related to this check.

NG

Replace airbag sensor assembly
(see page 

RS–82

).

OK

END

H01023

H23358

Airbag
Sensor
Assembly

P Squib 
(Dual stage –
2nd step)

C

D

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

DI–1413

1607

8

Check airbag sensor assembly.

PREPARATION:
(a)

Connect the connectors to the airbag sensor assembly.

(b)

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, and wait for at
least 60 seconds.

(b)

Clear the DTCs stored in memory (see page 

DI–1147

).

(c)

Turn the ignition switch to the LOCK position.

(d)

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

(e)

Check the DTCs (see page 

DI–1147

).

OK:

DTC B1815 is not output.

HINT:
Codes other than DTC B1815 may be output at this time, but
they are not related to this check.

NG

Replace airbag sensor assembly
(see page 

RS–82

).

OK

Go to step 10.

H23802

H01023

H23991

P2+

P2–

Airbag
Sensor
Assembly

P Squib 
(Dual stage –
2nd step)

D

C

SST

Cowl Wire

DI–1414

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

1608

9

Check airbag sensor assembly.

PREPARATION:
(a)

From the step 5:
Turn the ignition switch to the LOCK position.

(b)

From the step 5:
Disconnect the negative (–) terminal cable from the bat-
tery, and wait for at least 90 seconds.

(c)

Connect the connectors to the airbag sensor assembly.

(d)

Using SST, connect A22–3 (P2+) and A22–4 (P2–) of
connector ”C”.
SST

09843–18040

(e)

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, and wait for at
least 60 seconds.

(b)

Clear the DTCs stored in memory (see page 

DI–1147

).

(c)

Turn the ignition switch to the LOCK position.

(d)

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

(e)

Check the DTCs (see page 

DI–1147

).

OK:

DTC B1816, B1817 or B1818 is not output.

HINT:
Codes other than DTC B1816, B1817 and B1818 may be out-
put at this time, but they are not related to this check.

NG

Replace airbag sensor assembly
(see page 

RS–82

).

OK