2001 TOYOTA SEQUOIA Page 18

C84205G27650H24003
Occupant
Classification ECUAirbag
Sensor
Assembly
D
A21
FSR±FSR+CBA
E F
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1209
1403 Author: Date:
2005 SEQUOIA (RM1146U)
8 Check occupant classification system circuit (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 ConnectionConditionSpecified Condition
A21±16 (FSR+) ±
Body groundAlways1 MW or higher
A21±24 (FSR±) ±
Body groundAlways1 MW or higher
NG Go to step 12.
OK
Replace airbag sensor assembly (see page RS±82).
HINT:
Check for DTCs of the airbag sensor assembly. If the DTC B1650/32 is detected, replace the occupant clas-
sification ECU (see page RS±111) and perform a ºZero point calibrationº and ºSensitivity checkº of the occu-
pant classification system (see page DI±1128).

H10600H01007H43920H23364
DLC3
CG TCDTC B1653/35
Seat
Position
Airbag
Sensor
AssemblyAirbag
Sensor
Assembly
DI±1214
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1408 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.
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 B1653/35 is not output.
HINT:
Codes other than DTC B1653/35 may be output at this time, but
they are not related to this check.
NG Go to step 2.
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).

H10600H01007H43920H23364
DLC3
CG TCDTC B1653/35
Seat
Position
Airbag
Sensor
AssemblyAirbag
Sensor
Assembly
DI±1218
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1412 Author: Date:
2005 SEQUOIA (RM1146U)
7 Check seat position airbag sensor assembly.
PREPARATION:
(a) Connect the connectors of the seat position airbag sensor
assembly and 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 B1653/35 is not output.
HINT:
Codes other than DTC B1653/35 may be output at this time, but
they are not related to this check.
NG Go to step 8.
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).
8 Replace seat position airbag sensor assembly.
(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) Replace the seat position airbag sensor assembly (see page RS±104).
HINT:
Perform the inspection using parts from a normal vehicle if possible.
NEXT

H10600H01007H43920H23364
DLC3
CG TCDTC B1653/35
Seat
Position
Airbag
Sensor
AssemblyAirbag
Sensor
Assembly
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1219
1413 Author: Date:
2005 SEQUOIA (RM1146U)
9 Check airbag sensor assembly.
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, 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 for 60 seconds.
(e) Check the DTCs (see page DI±1147).
OK:
DTC B1653/35 is not output.
HINT:
Codes other than DTC B1653/35 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

C84216
H10600C92968H24657
CG
TCDTC B1656/38
DLC3Airbag
Sensor
Assembly Front Seat
Inner Belt LH
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1221
1415 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.
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 B1656/38 is not output.
HINT:
Codes other than DTC B1656/38 may be output at this time, but
they are not related to this check.
NG Go to step 2.
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).

C84216
H10600C92968H24657
CG
TCDTC B1656/38 DLC3Airbag
Sensor
Assembly
Front Seat
Inner Belt LH
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1225
1419 Author: Date:
2005 SEQUOIA (RM1146U)
7 Check front seat inner belt LH.
PREPARATION:
(a) Connect the connectors to the airbag sensor assembly
and the front seat inner belt LH.
(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 B1656/38 is not output.
HINT:
Codes other than DTC B1656/38 may be output at this time, but
they are not related to this check.
NG Go to step 8.
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).
8 Replace front seat inner belt LH.
(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) Replace the front seat inner belt LH (see page BO±112, BO±126).
HINT:
Perform inspection using parts from a normal vehicle if possible.
NEXT

C84216
H10600C92968H24657
CG
TCDTC B1656/38 DLC3Airbag
Sensor
Assembly
Front Seat
Inner Belt LH
DI±1226
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1420 Author: Date:
2005 SEQUOIA (RM1146U)
9 Check airbag sensor assembly.
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, 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 B1656/38 is not output.
HINT:
Codes other than DTC B1656/38 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

H22552
Ignition Switch
Passenger Airbag
ON/OFF Indicator
(ºONº)
Passenger Airbag
ON/OFF Indicator
(ºOFFº)ON
OFF
ABC
4 sec. 2 sec.
4 sec. 2 sec.
ON/OFF condition depends on the
front passenger detection results. ON
OFF
ON
OFF
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1229
1423 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check passenger airbag ON/OFF indicator.
CHECK:
(a) Turn the ignition switch to the ON position.
(b) Check the passenger airbag ON/OFF indicator operation.
HINT:
Refer to the normal condition of the passenger airbag ON/OFF indicator (see page DI±1137).
RESULT:
A:
During period ºAº in the illustration, even if both the ºONº and ºOFFº passenger airbag ON/OFF
indicators normally come on, both of them do not go off during period ºBº.
During periods ºAº and ºBº in the illustration, even if both the ºONº and ºOFFº passenger air-
bag ON/OFF indicators normally come on, both of them come on during period ºCº.
B:
During period ºAº, neither the ºONº nor ºOFFº passenger airbag ON/OFF indicators come on,
or either of them does not come on.
During period ºCº, even if the front passenger seat is occupied, neither the ºONº nor ºOFFº
passenger airbag ON/OFF indicators come on.
B Go to step 7.
A