Toyota Sequoia (2005). Manual - part 401

H41440

H23351

Spiral 
Cable

Airbag 

Sensor 

Assembly

D2+

D2–

D Squib

(Dual stage – 

2nd step)

B

C

E

D

F

A

Cowl Wire

A23

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

DI–1399

1593

17

Check cowl wire (short to ground).

PREPARATION:
Disconnect the cowl wire connector from the spiral cable.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:

Tester Connection

Condition

Specified Condition

A23–4 (D2+) – 

Body ground

Always

1 M

Ω

 or higher

A23–3 (D2–) – 

Body ground

Always

1 M

Ω

 or higher

NG

Repair or replace cowl wire.

OK

H41479

H23350

Spiral
Cable

Airbag

Sensor

Assembly

D2+

D2–

D Squib

(Dual stage – 

2nd step)

Color: Black

A

B

D

E

C

F

DI–1400

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

1594

18

Check spiral cable (short to ground).

CHECK:
(a)

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

Replace spiral cable (see page 

RS–21

).

OK

From the results of the above inspection, the malfunctioning part can now be considered normal.
To make sure of this, use the simulation method to check (see page 

DI–1137

).

HINT:

Perform the simulation method by selecting the check mode with the hand–held tester (see page 

DI–1151

).

After selecting the check mode, perform the simulation method by wiggling each connector of the air-
bag system or driving the vehicle on a city or rough road (see page 

DI–1151

).

H41440

H23351

Spiral 
Cable

Airbag 

Sensor 

Assembly

D2+

D2–

D Squib

(Dual stage – 

2nd step)

B

C

E

D

F

A

Cowl Wire

A23

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

DI–1401

1595

19

Check cowl wire (short to B+).

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.

(c)

Disconnect the cowl wire connector from the spiral cable.

(d)

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

A23–4 (D2+) – 

Body ground

Ignition switch ON

Below 1 V

A23–3 (D2–) – 

Body ground

Ignition switch ON

Below 1 V

NG

Repair or replace cowl wire.

OK

H41479

H23350

Spiral
Cable

Airbag

Sensor

Assembly

D2+

D2–

D Squib

(Dual stage – 

2nd step)

Color: Black

A

B

D

E

C

F

DI–1402

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

1596

20

Check spiral cable (short to B+).

CHECK:
Measure the voltage according to the value(s) in the table be-
low when the ignition switch is in the ON position.
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

Replace spiral cable (see page 

RS–21

).

OK

From the results of the above inspection, the malfunctioning part can now be considered normal.
To make sure of this, use the simulation method to check (see page 

DI–1137

).

HINT:

Perform the simulation method by selecting the check mode with the hand–held tester (see page 

DI–1151

).

After selecting the check mode, perform the simulation method by wiggling each connector of the air-
bag system or driving the vehicle on a city or rough road (see page 

DI–1151

).