2001 TOYOTA SEQUOIA terminal TC

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).

± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1471
1665 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 B1905 is output.A
DTC B1906 is output.B
DTC B1907 is output.C
DTC B1908 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 74 is output.E
HINT:
Codes other than DTC B1905, B1906, B1907, B1908 and DTC 74 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

H01016H43108H23601
P/T Squib LH
PL±
PL+Airbag
Sensor
Assembly
Floor Wire No. 2
A
B C D
P10
DI±1474
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1668 Author: Date:
2005 SEQUOIA (RM1146U)
6 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 ConnectionConditionSpecified Condition
P10±1 (PL+) ±
Body groundIgnition switch ONBelow 1 V
P10±2 (PL±) ±
Body groundIgnition switch ONBelow 1 V
NG Repair or replace floor wire No. 2.
OK
Go to step 11.
7 Check connector.
CHECK:
Check that the floor wire No. 2 connector (on the front seat outer belt 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

H01016H43108H23601
P/T Squib LH
PL±
PL+Airbag
Sensor
Assembly
Floor Wire No. 2
A
B C D
P10
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1475
1669 Author: Date:
2005 SEQUOIA (RM1146U)
8 Check floor wire No. 2 (P/T squib LH 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
P10±1 (PL+) ±
Body groundIgnition switch ONBelow 1 V
P10±2 (PL±) ±
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
P10±1 (PL+) ±
P10±2 (PL±)AlwaysBelow 1 W
P10±1 (PL+) ±
Body groundAlways1 MW or higher
P10±2 (PL±) ±
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
P10±1 (PL+) ±
P10±2 (PL±)Always1 MW or higher
NG Repair or replace floor wire No. 2.
OK

H10600H01018H01087H24656
Airbag
Sensor
Assembly P/T Squib LH
DLC3
TC CG
DTC 74 C D
DI±1476
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1670 Author: Date:
2005 SEQUOIA (RM1146U)
9 Replace front seat outer belt LH (P/T squib LH).
PREPARATION:
(a) Replace the front seat outer belt LH (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 74 is not output.
HINT:
Codes other than DTC 74 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

H01018H23609
Airbag
Sensor
Assembly DC P/T Squib LH
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1477
1671 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 B1905 is not output.
HINT:
Codes other than DTC B1905 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.

H01017H43107H23603
Airbag
Sensor
Assembly P/T Squib LH
C D
PL± PL+
Service Wire
P10
DI±1478
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1672 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 P10±1 (PL+) and P10±2
(PL±) 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 B1906, B1907 or B1908 is not output.
HINT:
Codes other than DTC B1906, B1907 and B1908 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

H01018H23474
Airbag
Sensor
Assembly DC P/T Squib LH
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1479
1673 Author: Date:
2005 SEQUOIA (RM1146U)
12 Check front seat outer belt LH (P/T squib LH).
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 10:
Disconnect the service wire from connector ºCº.
(d) Connect the connector to the front seat outer belt LH.
(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 B1905, B1906, B1907 or B1908 is not output.
HINT:
Codes other than DTC B1905, B1906, B1907 and B1908 may
be output at this time, but they are not related to this check.
NG Replace front seat outer belt LH
(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).