TOYOTA SEQUOIA 2001 Service Repair Manual

H01019H24511
Airbag
Sensor
Assembly
ICR+
ICR± Floor Wire
A
B
C
D
Curtain Shield
Airbag RH Squib
C12
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1439
1633 Author: Date:
2005 SEQUOIA (RM1146U)
2 Check connector.
CHECK:
Check that the floor wire connector (on the curtain shield airbag assembly RH side) is not damaged.
OK:
The lock button is not disengaged, or the claw of the lock is not deformed or damaged.
NG Repair or replace floor wire.
OK
3 Check floor wire (short).
PREPARATION:
Release the activation prevention mechanism built into con-
nector ºBº (see page DI±1137).
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
C12±1 (ICR+) ±
C12±2 (ICR±)Always1 MW or higher
NG Repair or replace floor wire.
OK
Go to step 10.

H01019H24511
Airbag
Sensor
Assembly
ICR+
ICR± Floor Wire
A
B
C
D
Curtain Shield
Airbag RH Squib
C12
H01019H24511
Airbag
Sensor
Assembly
ICR+
ICR± Floor Wire
A
B
C
D
Curtain Shield
Airbag RH Squib
C12
DI±1440
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1634 Author: Date:
2005 SEQUOIA (RM1146U)
4 Check floor wire (open).
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
C12±1 (ICR+) ±
C12±2 (ICR±)AlwaysBelow 1 W
NG Repair or replace floor wire.
OK
Go to step 11.
5 Check floor wire (short to ground).
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
C12±1 (ICR+) ±
Body groundAlways1 MW or higher
C12±2 (ICR±) ±
Body groundAlways1 MW or higher
NG Repair or replace floor wire.
OK
Go to step 11.

H01019H24511
Airbag
Sensor
Assembly
ICR+
ICR± Floor Wire
A
B
C
D
Curtain Shield
Airbag RH Squib
C12
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1441
1635 Author: Date:
2005 SEQUOIA (RM1146U)
6 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 ConnectionConditionSpecified Condition
C12±1 (ICR+) ±
Body groundIgnition switch ONBelow 1 V
C12±2 (ICR±) ±
Body groundIgnition switch ONBelow 1 V
NG Repair or replace floor wire.
OK
Go to step 11.
7 Check connector.
CHECK:
Check that the floor wire connector (on the curtain shield airbag assembly RH side) is not damaged.
OK:
The lock button is not disengaged, or the claw of the lock is not deformed or damaged.
NG Repair or replace floor wire.
OK

H01019H24511
Airbag
Sensor
Assembly
ICR+
ICR± Floor Wire
A
B
C
D
Curtain Shield
Airbag RH Squib
C12
DI±1442
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1636 Author: Date:
2005 SEQUOIA (RM1146U)
8 Check floor wire (curtain shield airbag RH 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 ConnectionConditionSpecified Condition
C12±1 (ICR+) ±
Body groundIgnition switch ONBelow 1 V
C12±2 (ICR±) ±
Body groundIgnition switch ONBelow 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 ConnectionConditionSpecified Condition
C12±1 (ICR+) ±
C12±2 (ICR±)AlwaysBelow 1 W
C12±1 (ICR+) ±
Body groundAlways1 MW or higher
C12±2 (ICR±) ±
Body groundAlways1 MW or higher
PREPARATION:
Release the activation prevention mechanism built into con-
nector ºBº (see page DI±1137).
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
C12±1 (ICR+) ±
C12±2 (ICR±)Always1 MW or higher
NG Repair or replace floor wire.
OK

H01021
H10600H16840H24653
Airbag
Sensor
Assembly
CG
TC
C D
DLC3
DTC 57
Curtain Shield
Airbag RH Squib
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1443
1637 Author: Date:
2005 SEQUOIA (RM1146U)
9 Replace curtain shield airbag assembly RH (curtain shield airbag RH squib).
PREPARATION:
(a) Replace the curtain shield airbag assembly RH (see page
RS±71).
HINT:
Perform the inspection using parts from a normal vehicle if pos-
sible.
(b) Connect the connectors to the airbag sensor assembly.
(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 57 is not output.
HINT:
Codes other than DTC 57 may be output at this time, but they
are not related to this check.
NG Replace airbag sensor assembly
(see page RS±82).
OK
END

H01017H23588
Airbag
Sensor
Assembly
C DCurtain Shield
Airbag RH Squib
DI±1444
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1638 Author: Date:
2005 SEQUOIA (RM1146U)
10 Check airbag sensor assembly.
PREPARATION:
(a) Connect the connectors to the airbag sensor assembly.
(b) 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 B1830 is not output.
HINT:
Codes other than DTC B1830 may be output at this time, but
they are not related to this check.
NG Replace airbag sensor assembly
(see page RS±82).
OK
Go to step 12.

H01020H23982H24010
Airbag
Sensor
Assembly
ICR+ICR±
C D
Service Wire Curtain Shield
Airbag RH Squib
C12
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1445
1639 Author: Date:
2005 SEQUOIA (RM1146U)
11 Check airbag sensor assembly.
PREPARATION:
(a) From the step 6:
Turn the ignition switch to the LOCK position.
(b) From the step 6:
Disconnect the negative (±) terminal cable from the bat-
tery, and wait for at least 90 seconds.
(c) Using a service wire, connect C12±1 (ICR+) and C12±2
(ICR±) of the connector ºCº.
NOTICE:

Twist the end of the service wire in order to insert it
into the connector.

Do not forcibly insert the twisted service wire into the
terminals of the connector when connecting.
(d) Connect the connectors to the airbag sensor assembly.
(e) 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 B1831, B1832 or B1833 is not output.
HINT:
Codes other than DTC B1831, B1832 and B1833 may be out-
put at this time, but they are not related to this check.
NG Replace airbag sensor assembly
(see page RS±82).
OK

H23966
Airbag
Sensor
Assembly
C DCurtain Shield
Airbag RH Squib
DI±1446
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1640 Author: Date:
2005 SEQUOIA (RM1146U)
12 Check curtain shield airbag assembly RH (curtain shield airbag RH squib).
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) From the step 11:
Disconnect the service wire from connector ºCº.
(d) Connect the connector to the curtain shield airbag as-
sembly RH.
(e) 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 B1830, B1831, B1832 or B1833 is not output.
HINT:
Codes other than DTC B1830, B1831, B1832 and B1833 may
be output at this time, but they are not related to this check.
NG Replace curtain shield airbag assembly RH
(see page RS±71).
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).

± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1447
1641 Author: Date:
2005 SEQUOIA (RM1146U)
DTC B1835/58 Short in Curtain Shield Airbag (LH) Squib
Circuit
DTC B1836/58 Open in Curtain Shield Airbag (LH) Squib
Circuit
DTC B1837/58 Short in Curtain Shield Airbag (LH) Squib
Circuit (to Ground)
DTC B1838/58 Short in Curtain Shield Airbag (LH) Squib
Circuit (to B+)
CIRCUIT DESCRIPTION
The curtain shield airbag LH squib circuit consists of the airbag sensor assembly and the curtain shield air-
bag assembly LH.
The circuit instructs the SRS to deploy when deployment conditions are met.
These DTCs are recorded when a malfunction is detected in the curtain shield airbag LH squib circuit.
DTC No.DTC Detection ConditionTrouble Area
B1835/58

The airbag sensor assembly receives a line short circuit
signal 5 times in the curtain shield airbag LH squib circuit
during primary check.

Curtain shield airbag LH squib malfunction

Airbag sensor assembly malfunction
Curtain shield airbag assembly LH
(curtain shield airbag LH squib)

Airbag sensor assembly

Floor wire No. 2
B1836/58

The airbag sensor assembly receives an open circuit sig-
nal in the curtain shield airbag LH squib circuit for 2 se-
conds.

Curtain shield airbag LH squib malfunction

Airbag sensor assembly malfunction
Curtain shield airbag assembly LH
(curtain shield airbag LH squib)

Airbag sensor assembly

Floor wire No. 2
B1837/58

The airbag sensor assembly receives a short circuit to
ground signal in the curtain shield airbag LH squib circuit
for 0.5 seconds.

Curtain shield airbag LH squib malfunction

Airbag sensor assembly malfunction
Curtain shield airbag assembly LH
(curtain shield airbag LH squib)

Airbag sensor assembly

Floor wire No. 2
B1838/58

The airbag sensor assembly receives a short to B+ circuit
signal in the curtain shield airbag LH squib circuit for 0.5
seconds.

Curtain shield airbag LH squib malfunction

Airbag sensor assembly malfunction
Curtain shield airbag assembly LH
(curtain shield airbag LH squib)

Airbag sensor assembly

Floor wire No. 2
DIDHP±01

H01454
C11
Curtain Shield Airbag
LH SquibAirbag Sensor Assembly
A194
ICL+ Y±B
1
2Y
A193
ICL± DI±1448
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1642 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM