Toyota Sequoia (2005). Manual - part 851

RS0UU–05

H23937

Front Seat Assembly RH

Occupant Classification ECU

RS–110

–

SUPPLEMENTAL RESTRAINT SYSTEM

OCCUPANT CLASSIFICATION ECU

3393

OCCUPANT CLASSIFICATION ECU

COMPONENTS

RS0UV–06

H23938

–

SUPPLEMENTAL RESTRAINT SYSTEM

OCCUPANT CLASSIFICATION ECU

RS–111

3394

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.

RS0UW–06

RS–112

–

SUPPLEMENTAL RESTRAINT SYSTEM

OCCUPANT CLASSIFICATION ECU

3395

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.

RS0UX–05

–

SUPPLEMENTAL RESTRAINT SYSTEM

OCCUPANT CLASSIFICATION ECU

RS–113

3396

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.