2001 TOYOTA SEQUOIA service

H43111H43106H43699H23818
C
B DA
Service
Wire
SVC3SGD3
SIG3
Occupant
Classification
Sensor Rear LHOccupant
Classification
ECU
Service Wire
SGD3SVC3
SIG3O7 Seat Wire No. 1
O1
0
DI±1284
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1478 Author: Date:
2005 SEQUOIA (RM1146U)
4 Check seat wire No. 1 (open).
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) Using a service wire, connect O10±1 (SVC3) and O10±3
(SGD3), O10±2 (SIG3) and O10±3 (SGD3) of connector
ºCº.
NOTICE:
Do not forcibly insert a service wire into the terminals of the
connector when connecting.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
O7±5 (SVC3) ±
O7±3 (SGD3)AlwaysBelow 1 W
O7±9 (SIG3) ±
O7±3 (SGD3)AlwaysBelow 1 W
NG Repair or replace seat wire No. 1.
OK

H43111H43105H23817
SVC3 Occupant
Classification
Sensor Rear LH
CB DASGD3
SIG3
Occupant
Classification
ECU
O7 Seat Wire No. 1
H43111H43105H23817
SVC3 Occupant
Classification
Sensor Rear LH
CB DASGD3
SIG3
Occupant
Classification
ECU
O7 Seat Wire No. 1
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1285
1479 Author: Date:
2005 SEQUOIA (RM1146U)
5 Check seat wire No. 1 (short).
PREPARATION:
Disconnect the service wire from connector ºCº.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
O7±9 (SIG3) ±
O7±3 (SGD3)Always1 MW or higher
O7±5 (SVC3) ±
O7±3 (SGD3)Always1 MW or higher
O7±9 (SIG3) ±
O7±5 (SVC3)Always1 MW or higher
NG Repair or replace seat wire No. 1.
OK
6 Check seat wire No. 1 (short to ground).
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
O7±9 (SIG3) ±
Body groundAlways1 MW or higher
O7±5 (SVC3) ±
Body groundAlways1 MW or higher
O7±3 (SGD3) ±
Body groundAlways1 MW or higher
NG Repair or replace seat wire No. 1.
OK

H43111H43106H43699H23818
CB DA
Service
Wire
Occupant
Classification
Sensor Rear RHOccupant
Classification
ECU
SVC4 SGD4
SIG4
SIG4 SGD4
SVC4
Service Wire
Seat Wire No. 1
O7
O11
DI±1294
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1488 Author: Date:
2005 SEQUOIA (RM1146U)
4 Check seat wire No. 1 (open).
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) Using a service wire, connect O11±1 (SVC4) and O11±3
(SGD4), O11±2 (SIG4) and O11±3 (SGD4) of connector
ºCº.
NOTICE:
Do not forcibly insert a service wire into the terminals of the
connector when connecting.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
O7±6 (SVC4) ±
O7±4 (SGD4)AlwaysBelow 1 W
O7±10 (SIG4) ±
O7±4 (SGD4)AlwaysBelow 1 W
NG Repair or replace seat wire No. 1.
OK

H43111H43105H23817
CB DA
Occupant
Classification
Sensor Rear RH
SVC4 SGD4
SIG4
Occupant
Classification
ECU
Seat Wire No. 1
O7
H43111H43105H23817
CB DA
Occupant
Classification
Sensor Rear RH
SVC4 SGD4
SIG4
Occupant
Classification
ECU
Seat Wire No. 1
O7
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1295
1489 Author: Date:
2005 SEQUOIA (RM1146U)
5 Check seat wire No. 1 (short).
PREPARATION:
Disconnect the service wire from connector ºCº.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
O7±10 (SIG4) ±
O7±4 (SGD4)Always1 MW or higher
O7±6 (SVC4) ±
O7±4 (SGD4)Always1 MW or higher
O7±10 (SIG4) ±
O7±6 (SVC4)Always1 MW or higher
NG Repair or replace seat wire No. 1.
OK
6 Check seat wire No. 1 (short to ground).
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
O7±4 (SGD4) ±
Body groundAlways1 MW or higher
O7±6 (SVC4) ±
Body groundAlways1 MW or higher
O7±10 (SIG4) ±
Body groundAlways1 MW or higher
NG Repair or replace seat wire No. 1.
OK

C84205G27650H24003
Occupant
Classification ECUAirbag
Sensor
Assembly
D
A21
FSR±FSR+CBA
E F
C84207G27650H43694H24002
Occupant
Classification ECUAirbag
Sensor
Assembly
D
FSR±FSR+ CBA
FSR+
FSR± O6
E F
A21
Service Wire
DI±1324
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1518 Author: Date:
2005 SEQUOIA (RM1146U)
4 Check airbag sensor assembly communication circuit (short to B+).
PREPARATION:
(a) Disconnect the connector from the occupant classifica-
tion ECU.
(b) Connect the negative (±) terminal cable to the battery.
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
A21±16 (FSR+) ±
Body groundIgnition switch ONBelow 1 V
A21±24 (FSR±) ±
Body groundIgnition switch ONBelow 1 V
NG Go to step 13.
OK
5 Check airbag sensor assembly communication circuit (open).
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) Using a service wire, connect O6±8 (FSR+) and O6±4
(FSR±) of connector ºEº.
NOTICE:
Do not forcibly insert a service wire into the terminals of the
connector when connecting.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
A21±16 (FSR+) ±
A21±24 (FSR±)AlwaysBelow 1 W
NG Go to step 14.
OK

C84205G27650H24003
Occupant
Classification ECUAirbag
Sensor
Assembly
D
A21
FSR±FSR+CBA
E F
C84205G27650H24003
Occupant
Classification ECUAirbag
Sensor
Assembly
D
A21
FSR±FSR+CBA
E F
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1325
1519 Author: Date:
2005 SEQUOIA (RM1146U)
6 Check airbag sensor assembly communication circuit (short).
PREPARATION:
Disconnect the service wire from connector ºEº.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
A21±16 (FSR+) ±
A21±24 (FSR±)Always1 MW or higher
NG Go to step 15.
OK
7 Check airbag sensor assembly communication circuit (short to ground).
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 16.
OK

C84213
H43694H24024H24004
Occupant
Classification
ECUAirbag
Sensor
Assembly
A
O6
FSR+FSR±B C D E F
Service Wire
BL1
Seat Wire No. 1
Floor Wire
FSR+
FSR±
C84211H24024H24005
Occupant
Classification
ECU
Airbag
Sensor
Assembly
A
FSR+
FSR± B C D E F
BL1Seat Wire No. 1
Floor Wire
DI±1330
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1524 Author: Date:
2005 SEQUOIA (RM1146U)
14 Check seat wire No. 1 (open).
PREPARATION:
Disconnect the seat wire No. 1 connector from the floor wire.
HINT:
The service wire has already been inserted into connector ºEº.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
BL1±3 (FSR+) ±
BL1±5 (FSR±)AlwaysBelow 1 W
NG Repair or replace seat wire No. 1.
OK
Repair or replace floor wire.
15 Check seat wire No. 1 (short).
PREPARATION:
Disconnect the seat wire No. 1 connector from the floor wire.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
BL1±3 (FSR+) ±
BL1±5 (FSR±)Always1 MW or higher
NG Repair or replace seat wire No. 1.
OK
Repair or replace floor wire.

H23975H01002H23988
D Squib
D+ D±
Spiral
Cable
Color: Orange Service Wire
C D
E F
Airbag
Sensor
Assembly
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1361
1555 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 D+ and D± of the connector
ºEº.
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 B1801, B1802 or B1803 is not output.
HINT:
Codes other than DTC B1801, B1802 and B1803 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