Toyota Sequoia (2005). Manual - part 390

H23795

H23974

H01001

H23987

D+

D–

Color: Orange

D Squib

Spiral
Cable

A

B

C

D

E

F

Airbag
Sensor 
Assembly

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

DI–1355

1549

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 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

D+ – D–

Always

1 M

Ω

 or higher

NG

Go to step 13.

OK

Go to step 10.

H23795

H23974

H01001

H23987

D+

D–

Color: Orange

D Squib

Spiral
Cable

A

B

C

D

E

F

Airbag
Sensor 
Assembly

H23795

H23974

H01001

H23987

D+

D–

Color: Orange

D Squib

Spiral
Cable

A

B

C

D

E

F

Airbag
Sensor 
Assembly

DI–1356

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

1550

4

Check D squib circuit (open).

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

Tester Connection

Condition

Specified Condition

D+ – D–

Always

Below 1 

Ω

NG

Go to step 15.

OK

Go to step 11.

5

Check D squib circuit (short to ground).

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

Tester Connection

Condition

Specified Condition

D+ – Body ground

Always

1 M

Ω

 or higher

D– – Body ground

Always

1 M

Ω

 or higher

NG

Go to step 17.

OK

Go to step 11.

H23795

H23974

H01001

H23987

D+

D–

Color: Orange

D Squib

Spiral
Cable

A

B

C

D

E

F

Airbag
Sensor 
Assembly

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

DI–1357

1551

6

Check D squib (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

D+ – Body ground

Ignition switch ON

Below 1 V

D– – 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

H23795

H23974

H01001

H23987

D+

D–

Color: Orange

D Squib

Spiral
Cable

A

B

C

D

E

F

Airbag
Sensor 
Assembly

DI–1358

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

1552

8

Check D squib 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

D+ – Body ground

Ignition switch ON

Below 1 V

D– – 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

D+ – D–

Always

Below 1 

Ω

D+ – Body ground

Always

1 M

Ω

 or higher

D– – Body ground

Always

1 M

Ω

 or higher

PREPARATION:
Release the activation prevention mechanism built into the 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

D+ – D–

Always

1 M

Ω

 or higher

NG

Go to step 21.

OK