Toyota Sequoia (2005). Manual - part 398

H41475

H23348

D Squib

(Dual stage – 

2nd step)

D2+

D2–

Spiral
Cable

Airbag

Sensor

Assembly

Color: Black

A

B

D

E

C

F

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

DI–1387

1581

2

Check connector.

CHECK:
Check that the spiral cable connectors (on the steering wheel pad side) are not damaged.
OK:

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

NG

Replace spiral cable (see page 

RS–21

).

OK

3

Check D squib (dual stage – 2nd step) circuit (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

D2+ – D2–

Always

1 M

Ω

 or higher

NG

Go to step 13.

OK

Go to step 10.

H41475

H23348

D Squib

(Dual stage – 

2nd step)

D2+

D2–

Spiral
Cable

Airbag

Sensor

Assembly

Color: Black

A

B

D

E

C

F

H41475

H23348

D Squib

(Dual stage – 

2nd step)

D2+

D2–

Spiral
Cable

Airbag

Sensor

Assembly

Color: Black

A

B

D

E

C

F

DI–1388

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

1582

4

Check D squib (dual stage – 2nd step) circuit (open).

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

Tester Connection

Condition

Specified Condition

D2+ – D2–

Always

Below 1 

Ω

NG

Go to step 15.

OK

Go to step 11.

5

Check D squib (dual stage – 2nd step) circuit (short to ground).

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

Tester Connection

Condition

Specified Condition

D2+ – Body ground

Always

1 M

Ω

 or higher

D2– – Body ground

Always

1 M

Ω

 or higher

NG

Go to step 17.

OK

Go to step 11.

H41475

H23348

D Squib

(Dual stage – 

2nd step)

D2+

D2–

Spiral
Cable

Airbag

Sensor

Assembly

Color: Black

A

B

D

E

C

F

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

DI–1389

1583

6

Check D squib (dual stage – 2nd step) circuit (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

D2+ – Body ground

Ignition switch ON

Below 1 V

D2– – Body ground

Ignition switch ON

Below 1 V

NG

Go to step 19.

OK

Go to step 11.

7

Check connector.

CHECK:
Check that the spiral cable connectors (on the steering wheel pad side) are not damaged.
OK:

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

NG

Replace spiral cable (see page 

RS–21

).

OK

H41475

H23348

D Squib

(Dual stage – 

2nd step)

D2+

D2–

Spiral
Cable

Airbag

Sensor

Assembly

Color: Black

A

B

D

E

C

F

DI–1390

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

1584

8

Check D squib (dual stage – 2nd step) circuit.

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

D2+ – Body ground

Ignition switch ON

Below 1 V

D2– – 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

D2+ – D2–

Always

Below 1 

Ω

D2+ – Body ground

Always

1 M

Ω

 or higher

D2– – 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

D2+ – D2–

Always

1 M

Ω

 or higher

NG

Go to step 21.

OK