Toyota Sequoia (2005). Manual - part 350

H01015

G27650

H23122

Airbag 

Sensor 

Assembly

Curtain Shield
Airbag Sensor 
Assembly RH

Floor Wire

VUCR

ESCR

A21

A

B

C

D

H01015

G27650

H23122

Airbag 

Sensor 

Assembly

Curtain Shield
Airbag Sensor 
Assembly RH

Floor Wire

VUCR

ESCR

A21

A

B

C

D

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

DI–1195

1389

4

Check floor wire (short).

PREPARATION:
Disconnect the SST from connector ”C”.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:

Tester Connection

Condition

Specified Condition

A21–21 (VUCR) – 

A21–19 (ESCR)

Always

1 M

Ω

 or higher

NG 

Repair or replace floor wire.

OK

5

Check floor wire (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

A21–21 (VUCR) – 

Body ground

Ignition switch ON

Below 1 V

A21–19 (ESCR) – 

Body ground

Ignition switch ON

Below 1 V

NG 

Repair or replace floor wire.

OK

H01015

G27650

H23122

Airbag 

Sensor 

Assembly

Curtain Shield
Airbag Sensor 
Assembly RH

Floor Wire

VUCR

ESCR

A21

A

B

C

D

DI–1196

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

1390

6

Check floor wire (short to ground).

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

A21–21 (VUCR) – 

Body ground

Always

1 M

Ω

 or higher

A21–19 (ESCR) – 

Body ground

Always

1 M

Ω

 or higher

NG

Repair or replace floor wire.

OK

H01007

H10600

H42066

H40997

H24664

Airbag 
Sensor 
Assembly

CG

TC

DTC B1630/23

DLC3

Curtain Shield
Airbag Sensor
Assembly LH

DTC B1635/24

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

DI–1197

1391

7

Check curtain shield airbag sensor assembly RH.

PREPARATION:
(a)

Connect the connectors to the airbag sensor assembly.

(b)

Interchange the curtain shield airbag sensor assembly
RH with LH and connect the connectors to them.

(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 B1630/23 is output.

A

DTC B1635/24 is output.

B

DTC B1630/23 and B1635/24 are not

output.

C

HINT:
Codes other than DTC B1630/23 and B1635/24 may be output
at this time, but they are not relevant to this check.

A

Replace airbag sensor assembly
(see page 

RS–82

).

B

Replace curtain shield airbag sensor assembly
RH (see page 

RS–97

).

C

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

).

H02751

Airbag Sensor Assembly

S26
Curtain Shield Airbag 
Sensor Assembly LH

A19

20

W

2

A19

22

B

1

VUCL

ESCL

VUCL

ESCL

DI–1198

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

1392

DTC

B1635/24 Curtain Shield Airbag Sensor (LH) 

Malfunction

CIRCUIT DESCRIPTION

The curtain shield airbag sensor assembly LH consists of the safing sensor, the diagnosis circuit, the lateral
deceleration sensor, etc. 
If the airbag sensor assembly receives signals from the lateral deceleration sensor, it determines whether
or not the SRS should be activated.
DTC B1635/24 is recorded when a malfunction is detected in the curtain shield airbag sensor LH circuit.

DTC No.

DTC Detecting Condition

Trouble Area

B1635/24

The airbag sensor assembly receives a short circuit sig-

nal, an open circuit signal, a short circuit to ground or a

short circuit to B+ signal in the curtain shield airbag sensor

LH circuit for 2 seconds.

Curtain shield airbag sensor assembly LH malfunction

Airbag sensor assembly malfunction

Curtain shield airbag sensor assembly LH

Airbag sensor assembly

Floor wire No. 2

WIRING DIAGRAM

DIDGX–01