Page 3401 of 4323
RS0UU±05
H23937
Front Seat Assembly RH
Occupant Classification ECU
RS±110
± SUPPLEMENTAL RESTRAINT SYSTEMOCCUPANT CLASSIFICATION ECU
3393 Author: Date:
2005 SEQUOIA (RM1146U)
OCCUPANT CLASSIFICATION ECU
COMPONENTS
Page 3402 of 4323
RS0UV±06
H23938
± SUPPLEMENTAL RESTRAINT SYSTEMOCCUPANT CLASSIFICATION ECU
RS±111
3394 Author: Date:
2005 SEQUOIA (RM1146U)
REMOVAL
NOTICE:
If the wiring connector of the SRS is disconnected
with the ignition switch in the ON position, DTCs will
be recorded.
Never use SRS parts from another vehicle. When re-
placing the parts, replace them with new ones.
Never reuse an occupant classification ECU if the air-
bag has previously deployed in a collision.
1. PRECAUTION (SEE PAGE RS±1 and RS±3)
2. DISCONNECT CABLE FROM NEGATIVE BATTERY
TERMINAL
Wait for 90 seconds after disconnecting the cable to prevent the
airbag working.
3. REMOVE FRONT SEAT ASSEMBLY RH
(SEE PAGE BO±111)
4. REMOVE OCCUPANT CLASSIFICATION ECU
(a) Disconnect the 2 connectors from the occupant classifi-
cation ECU.
(b) Using a screwdriver, remove the occupant classification
ECU.
Page 3403 of 4323
RS0UW±06
RS±112
± SUPPLEMENTAL RESTRAINT SYSTEMOCCUPANT CLASSIFICATION ECU
3395 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION
1. VEHICLE NOT INVOLVED IN COLLISION
Perform a diagnostic system check (see page DI±1147).
2. VEHICLE INVOLVED IN COLLISION
(a) Perform a diagnostic system check (see page DI±1147).
(b) Even if the airbag was not deployed, perform a visual check for damage to the occupant classification
ECU. If there are any defects mentioned below, replace the occupant classification ECU with a new
one:
Cracks, dents or chips in the case.
Cracks or other damage to the connector.
CAUTION:
For removal and installation procedures of the occupant classification ECU, see page RS±111 and
RS±114. Be sure to follow the correct procedure.
Page 3404 of 4323
RS0UX±05
± SUPPLEMENTAL RESTRAINT SYSTEMOCCUPANT CLASSIFICATION ECU
RS±113
3396 Author: Date:
2005 SEQUOIA (RM1146U)
REPLACEMENT
REPLACEMENT REQUIREMENTS
In the following cases, replace the occupant classification ECU with a new one.
The occupant classification ECU has been found to be faulty in troubleshooting.
The occupant classification ECU has been dropped.
CAUTION:
For removal and installation procedures of the occupant classification ECU, see page RS±111 and
RS±114. Be sure to follow the correct procedure.
Page 3405 of 4323

RS0UY±06
H23939
RS±114
± SUPPLEMENTAL RESTRAINT SYSTEMOCCUPANT CLASSIFICATION ECU
3397 Author: Date:
2005 SEQUOIA (RM1146U)
INSTALLATION
NOTICE:
Never use SRS parts from another vehicle. When re-
placing parts, replace them with new ones.
Never reuse the occupant classification ECU in-
volved in a collision when the airbag has deployed.
If the occupant classification ECU center has been
dropped, or there are any cracks, dents or other de-
fects in the case, bracket or connector, replace it with
a new one.
When installing the seat position sensor assembly
center, be careful that the SRS wiring does not inter-
fere with other parts and that it is not pinched be-
tween other parts.
1. INSTALL OCCUPANT CLASSIFICATION ECU
(a) Install the occupant classification ECU.
(b) Connect the 2 connectors to the occupant classification
ECU.
2. INSTALL FRONT SEAT ASSEMBLY RH
(SEE PAGE BO±123)
3. CONNECT CABLE TO NEGATIVE BATTERY TERMI-
NAL
4. PERFORM INITIALIZATION (SEE PAGE BE±77)
Some system need initialization when disconnecting the cable
from the negative battery terminal.
5. INITIALIZE OCCUPANT CLASSIFICATION ECU
(SEE PAGE DI±1137)
6. INSPECT SRS WARNING LIGHT (SEE PAGE DI±1137)
Page 3406 of 4323
RS11U±01
H24669
Switch Base
Lower Finish Panel
RSCA OFF Switch
± SUPPLEMENTAL RESTRAINT SYSTEMRSCA OFF SWITCH
RS±115
3398 Author: Date:
2005 SEQUOIA (RM1146U)
RSCA OFF SWITCH
COMPONENTS
Page 3407 of 4323
H23940Claw
RS11V±01
RS±116
± SUPPLEMENTAL RESTRAINT SYSTEMRSCA OFF SWITCH
3399 Author: Date:
2005 SEQUOIA (RM1146U)
REMOVAL
1. PRECAUTION (SEE PAGE RS±1 and RS±3)
2. DISCONNECT CABLE FROM NEGATIVE BATTERY
TERMINAL
Wait for 90 seconds after disconnecting the cable to prevent the
airbag working.
3. REMOVE LOWER FINISH PANEL (SEE PAGE
BO±89)
4. REMOVE SWITCH BASE
(a) Using a screwdriver, release the 3 claws and remover the
switch base.
HINT:
Tape up the screwdriver tip before use.
(b) Disconnect the connectors.
Page 3408 of 4323
H23941
RS11X±01
H24932
E
SW
RSCA OFF switch
± SUPPLEMENTAL RESTRAINT SYSTEMRSCA OFF SWITCH
RS±117
3400 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION
1. INSPECT RSCA OFF INDICATOR LIGHT
(a) Turn the ignition switch ON.
(b) Check that the RSCA OFF indicator light goes off after it
comes on for 3 seconds.
(c) Check that the RSCA OFF indicator light comes on after
pressing the RSCA OFF switch for approx. 2 seconds.
2. INSPECT RSCA OFF SWITCH CONTINUITY
(a) Inspect the continuity between each terminal.
Switch PositionTester ConnectionSpecified Condition
OFFSW (3) e E (4)No continuity
Hold ONSW (3) e E (4)Continuity
If continuity is not as specified, replace the RSCA OFF switch.