Toyota Sequoia (2005). Manual - part 408

H01454

S17
Side Squib LH

Airbag Sensor Assembly

A19

1

SFL+

Y–B

1

2

Y

A19

2

SFL–

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

DI–1427

1621

WIRING DIAGRAM

DI–1428

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

1622

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 B1825 is output.

A

DTC B1826 is output.

B

DTC B1827 is output.

C

DTC B1828 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 56 is output.

E

HINT:
Codes other than DTC B1825, B1826, B1827, B1828 and DTC 56 may be output at this time, but they are
not related to this check.

B

Go to step 3.

C

Go to step 4.

D

Go to step 5.

E

Go to step 6.

A

H01016

H44043

H24013

Airbag 
Sensor 
Assembly

SFL+

SFL–

Side Squib LH

Floor Wire No. 2

A

B

C

D

S17

H01016

H44043

H24013

Airbag 
Sensor 
Assembly

SFL+

SFL–

Side Squib LH

Floor Wire No. 2

A

B

C

D

S17

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

DI–1429

1623

2

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

S17–1 (SFL+) – 

S17–2 (SFL–)

Always

1 M

Ω

 or higher

NG

Repair or replace floor wire No. 2.

OK

Go to step 8.

3

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

S17–1 (SFL+) – 

S17–2 (SFL–)

Always

Below 1 

Ω

NG

Repair or replace floor wire No. 2.

OK

Go to step 9.

H01016

H44043

H24013

Airbag 
Sensor 
Assembly

SFL+

SFL–

Side Squib LH

Floor Wire No. 2

A

B

C

D

S17

H01016

H44043

H24013

Airbag 
Sensor 
Assembly

SFL+

SFL–

Side Squib LH

Floor Wire No. 2

A

B

C

D

S17

DI–1430

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

1624

4

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

S17–1 (SFL+) – 

Body ground

Always

1 M

Ω

 or higher

S17–2 (SFL–) – 

Body ground

Always

1 M

Ω

 or higher

NG

Repair or replace floor wire No. 2.

OK

Go to step 9.

5

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

S17–1 (SFL+) – 

Body ground

Ignition switch ON

Below 1 V

S17–2 (SFL–) – 

Body ground

Ignition switch ON

Below 1 V

NG

Repair or replace floor wire No. 2.

OK

Go to step 9.