2001 TOYOTA SEQUOIA Page 18

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±1449
1643 Author: Date:
2005 SEQUOIA (RM1146U)
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 B1835 is output.A
DTC B1836 is output.B
DTC B1837 is output.C
DTC B1838 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 58 is output.E
HINT:
Codes other than DTC B1835, B1836, B1837, B1838 and DTC 58 may be output at this time, but they are
not related to this check.
B Go to step 4.
C Go to step 5.
D Go to step 6.
E Go to step 7.
A

H01019
H16275H23590
Airbag
Sensor
Assembly
ICL+
ICL± Floor Wire No. 2
A
B C D
Curtain Shield
Airbag LH Squib
C11
DI±1450
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1644 Author: Date:
2005 SEQUOIA (RM1146U)
2 Check connector.
CHECK:
Check that the floor wire No. 2 connector (on the curtain shield airbag assembly LH 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 No. 2.
OK
3 Check floor wire No. 2 (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
C11±1 (ICL+) ±
C11±2 (ICL±)Always1 MW or higher
NG Repair or replace floor wire No. 2.
OK
Go to step 10.

H01019
H16275H23590
Airbag
Sensor
Assembly
ICL+
ICL± Floor Wire No. 2
A
B C D
Curtain Shield
Airbag LH Squib
C11
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1453
1647 Author: Date:
2005 SEQUOIA (RM1146U)
8 Check floor wire No. 2 (curtain shield airbag LH 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
C11±1 (ICL+) ±
Body groundIgnition switch ONBelow 1 V
C11±2 (ICL±) ±
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 for 90 seconds.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
C11±1 (ICL+) ±
C11±2 (ICL±)AlwaysBelow 1 W
C11±1 (ICL+) ±
Body groundAlways1 MW or higher
C11±2 (ICL±) ±
Body groundAlways1 MW or higher
PREPARATION:
Release the activation prevention mechanism built into the con-
nector ºBº (see page DI±1137).
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
C11±1 (ICL+) ±
C11±2 (ICL±)Always1 MW or higher
NG Repair or replace floor wire No. 2.
OK