TOYOTA SEQUOIA 2001 Service Repair Manual

H01454
P11
P/T Squib RHAirbag Sensor Assembly
A214
PR+ Y±B
1
2Y
A213
PR±
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1459
1653 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM

DI±1460
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1654 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.
(g) w/ Side and curtain shield airbag:
Disconnect the connectors from the curtain shield airbag assembly LH.
(h) Disconnect the connectors from the front seat outer belt LH.
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 B1900 is output.A
DTC B1901 is output.B
DTC B1902 is output.C
DTC B1903 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 73 is output.E
HINT:
Codes other than DTC B1900, B1901, B1902, B1903 and DTC 73 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

H01019H43108H23604
P/T Squib RH
PR±
PR+Airbag
Sensor
Assembly
Floor Wire
B C
DA
P11
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1461
1655 Author: Date:
2005 SEQUOIA (RM1146U)
2 Check connector.
CHECK:
Check that the floor wire connector (on the front seat outer belt 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
P11±1 (PR+) ±
P11±2 (PR±)Always1 MW or higher
NG Repair or replace floor wire.
OK
Go to step 10.

H01019H43108H23604
P/T Squib RH
PR±
PR+Airbag
Sensor
Assembly
Floor Wire
B C
DA
P11
H01019H43108H23604
P/T Squib RH
PR±
PR+Airbag
Sensor
Assembly
Floor Wire
B C
DA
P11
DI±1462
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1656 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
P11±1 (PR+) ±
P11±2 (PR±)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
P11±1 (PR+) ±
Body groundAlways1 MW or higher
P11±2 (PR±) ±
Body groundAlways1 MW or higher
NG Repair or replace floor wire.
OK
Go to step 11.

H01019H43108H23604
P/T Squib RH
PR±
PR+Airbag
Sensor
Assembly
Floor Wire
B C
DA
P11
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1463
1657 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
P11±1 (PR+) ±
Body groundIgnition switch ONBelow 1 V
P11±2 (PR±) ±
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 front seat outer belt 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

H01019H43108H23604
P/T Squib RH
PR±
PR+Airbag
Sensor
Assembly
Floor Wire
B C
DA
P11
DI±1464
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1658 Author: Date:
2005 SEQUOIA (RM1146U)
8 Check floor wire (P/T squib RH 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
P11±1 (PR+) ±
Body groundIgnition switch ONBelow 1 V
P11±2 (PR±) ±
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
P11±1 (PR+) ±
P11±2 (PR±)AlwaysBelow 1 W
P11±1 (PR+) ±
Body groundAlways1 MW or higher
P11±2 (PR±) ±
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
P11±1 (PR+) ±
P11±2 (PR±)Always1 MW or higher
NG Repair or replace floor wire.
OK

H10600H01021H01086H24655
DLC3
CG
TC
P/T Squib RH
C DAirbag
Sensor
Assembly
DTC 73
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1465
1659 Author: Date:
2005 SEQUOIA (RM1146U)
9 Replace front seat outer belt RH (P/T squib RH).
PREPARATION:
(a) Replace the front seat outer belt RH (see page BO±163).
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 73 is not output.
HINT:
Codes other than DTC 73 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 D P/T Squib RH
DI±1466
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1660 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 B1900 is not output.
HINT:
Codes other than DTC B1900 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.

H01020H43107H23605
P/T Squib RH
PR± PR+
Floor Wire
Service Wire
C DAirbag
Sensor
Assembly
P11
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1467
1661 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) Connect the connectors to the airbag sensor assembly.
(d) Using a service wire, connect P11±1 (PR+) and P11±2
(PR±) of 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.
(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 B1901, B1902 or B1903 is not output.
HINT:
Codes other than DTC B1901, B1902 and B1903 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 D P/T Squib RH
DI±1468
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1662 Author: Date:
2005 SEQUOIA (RM1146U)
12 Check front seat outer belt RH (P/T squib RH).
PREPARATION:
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (±) terminal cable from the bat-
tery, and wait at least for 90 seconds.
(c) From the step 11:
Disconnect the service wire from connector ºCº.
(d) Connect the connector to the front seat outer belt 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 B1900, B1901, B1902 or B1903 is not output.
HINT:
Codes other than DTC B1900, B1901, B1902 and B1903 may
be output at this time, but they are not related to this check.
NG Replace front seat outer belt RH
(see page BO±163).
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).