2001 TOYOTA SEQUOIA O2 sensor

C84216H10600
H43425C91342H23582
Side Airbag
Sensor Assembly LH
Airbag
Sensor
Assembly
DTC B1625/22DTC B1620/21
CG
TC DLC3
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1185
1379 Author: Date:
2005 SEQUOIA (RM1146U)
7 Check side airbag sensor assembly RH.
PREPARATION:
(a) Connect the connectors to the airbag sensor assembly.
(b) Interchange the side airbag sensor assembly RH with LH
and connect the connectors to them.
(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 B1620/21 is output.A
DTC B1625/22 is output.B
DTC B1620/21 and B1625/22 are not
output.C
HINT:
Codes other than DTC B1620/21 and B1625/22 may be output
at this time, but they are not related to this check.
A Replace airbag sensor assembly
(see page RS±82).
B Replace side airbag sensor assembly RH
(see page RS±92).
C
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).

H02751
Airbag Sensor Assembly S15
Side Airbag Sensor Assembly LH
A1919
VUPL W
2
ESL A1921
B
1 VUPL
ESL DI±1186
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1380 Author: Date:
2005 SEQUOIA (RM1146U)
DTC B1625/22 Side Airbag Sensor Assembly (LH)
Malfunction
CIRCUIT DESCRIPTION
The side airbag sensor assembly LH consists of the safing sensor, the diagnosis circuit, the lateral decelera-
tion sensor, etc.
If the airbag sensor assembly receives signals from the lateral deceleration sensor, it determine whether or
not the SRS should be activated.
DTC B1625/22 is recorded when a malfunction is detected in the side airbag sensor assembly LH circuit.
DTC No.DTC Detection ConditionTrouble Area
B1625/22

The airbag sensor assembly receives a line short circuit
signal, an open circuit signal, a short circuit to ground sig-
nal or a short circuit to B+ signal in the side airbag sensor
assembly LH circuit for 2 seconds.

Side airbag sensor assembly LH malfunction

Airbag sensor assembly malfunction

Side airbag sensor assembly LH

Airbag sensor assembly

Floor wire No. 2
WIRING DIAGRAM
DIDGV±01

C91342C84216H10600H24647
CG
TCDTC B1625/22
DLC3 Side Airbag Sensor
Assembly LHAirbag
Sensor
Assembly
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1187
1381 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 B1625/22 is not output.
HINT:
Codes other than DTC B1625/22 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).

C91384H01010G27652H23571
Side Airbag Sensor
Assembly LH
Airbag
Sensor
Assembly Floor Wire No. 2
ESL
VUPLSST
A
B
C D
A19S15
ESL
VUPL
DI±1188
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1382 Author: Date:
2005 SEQUOIA (RM1146U)
2 Check connection of connectors.
PREPARATION:
(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.
CHECK:
Check that the connectors are properly connected to the airbag sensor assembly and the side airbag sensor
assembly LH.
OK:
The connectors are connected securely.
NG Connect connectors, then go to step 1.
OK
3 Check floor wire No. 2 (open).
PREPARATION:
(a) Disconnect the connectors from the airbag sensor as-
sembly and the side airbag sensor assembly LH.
(b) Using SST, connect S15±2 (VUPL) and S15±1 (ESL) of
connector ºC.º
SST 09843±18040
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
A19±19 (VUPL) ±
A19±21 (ESL)AlwaysBelow 1 W
NG Repair or replace floor wire No. 2.
OK

C91384H01010G27652H23572
Side Airbag Sensor
Assembly LH
Airbag
Sensor
Assembly Floor Wire No. 2
VUPL ESLA
B C D
A19
C91384H01010G27652H23572
Side Airbag Sensor
Assembly LH
Airbag
Sensor
Assembly Floor Wire No. 2
VUPL ESLA
B C D
A19
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1189
1383 Author: Date:
2005 SEQUOIA (RM1146U)
4 Check floor wire No. 2 (short).
PREPARATION:
Disconnect the SST from connector ºCº.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
A19±19 (VUPL) ±
A19±21 (ESL)Always1 MW or higher
NG Repair or replace floor wire No. 2.
OK
5 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
A19±19 (VUPL) ±
Body groundIgnition switch ONBelow 1 V
A19±21 (ESL) ±
Body groundIgnition switch ONBelow 1 V
NG Repair or replace floor wire No. 2.
OK

C91384H01010G27652H23572
Side Airbag Sensor
Assembly LH
Airbag
Sensor
Assembly Floor Wire No. 2
VUPL ESLA
B C D
A19
DI±1190
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1384 Author: Date:
2005 SEQUOIA (RM1146U)
6 Check floor wire No. 2 (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
A19±19 (VUPL) ±
Body groundAlways1 MW or higher
A19±21 (ESL) ±
Body groundAlways1 MW or higher
NG Repair or replace floor wire No. 2.
OK

C84216H10600
H43425C91342H23573
Side Airbag
Sensor Assembly RH
Airbag
Sensor
Assembly
DTC B1620/21
DTC B1625/22
CG
TC DLC3
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1191
1385 Author: Date:
2005 SEQUOIA (RM1146U)
7 Check side airbag sensor assembly LH.
PREPARATION:
(a) Connect the connectors to the airbag sensor assembly.
(b) Interchange the side airbag sensor assembly RH with LH
and connect the connectors to them.
(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 B1625/22 is output.A
DTC B1620/21 is output.B
DTC B1620/21 and B1625/22 are not
output.C
HINT:
Codes other than DTC B1620/21 and B1625/22 may be output
at this time, but they are not related to this check.
A Replace airbag sensor assembly
(see page RS±82).
B Replace side airbag sensor assembly LH
(see page RS±92).
C
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).

H02751
Airbag Sensor Assembly S27
Curtain Shield Airbag
Sensor Assembly RH
A2121
W
2
A2119
B
1 VUCR
ESCRVUCR
ESCR DI±1192
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1386 Author: Date:
2005 SEQUOIA (RM1146U)
DTC B1630/23 Curtain Shield Airbag Sensor (RH)
Malfunction
CIRCUIT DESCRIPTION
The curtain shield airbag sensor assembly RH consists of the safing sensor the diagnostic circuit, the lateral
deceleration sensor, etc.
If the airbag sensor assembly receives signals from the lateral deceleration sensor, it determines whether
or not the SRS should be activated.
DTC B1630/23 is recorded when a malfunction is detected in the curtain shield airbag sensor RH circuit.
DTC No.DTC Detection ConditionTrouble Area
B1630/23

The airbag sensor assembly receives a short circuit sig-
nal, an open circuit signal, a short circuit to ground signal
or a short circuit to B+ signal in the curtain shield airbag
sensor RH circuit for 2 seconds.

Curtain shield airbag sensor assembly RH malfunction

Airbag sensor assembly malfunction

Curtain shield airbag sensor assembly RH

Airbag sensor assembly

Floor wire
WIRING DIAGRAM
DIDGW±01