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60-12
SUPPLEMENTAL RESTRAINT SYSTEM - SUPPLEMENTAL RESTRAINT SYSTEM
6010C-01
ON-VEHICLE INSPECTION
CAUTION:
Be sure to perform the initialization of the occupant classification ECU if any of the following condi-
tions occur (see page 05-767 ). If the initialization is not performed, the SRS may not operate properly.
S The occupant classification ECU is replaced.
S Accessories (seatback tray, seat cover, etc.) are installed to the vehicle.
S The passenger seat is removed from the vehicle, and then reinstalled or replaced.
S The passenger airbag ON/OFF indicator light ("OFF") comes on when the passenger seat is not
occupied.
S The vehicle is brought to the workshop for repair due to an accident or collision.
1. HORN BUTTON ASSY (VEHICLE NOT INVOLVED IN
COLLISION)
(a) Perform a diagnostic system check (see page 05-777 ).
(b) With the horn button assy installed on the vehicle, per-
form a visual check. If there are any defects as mentioned
below, replace the horn button assy with a new one:
Cuts, minute cracks or marked discoloration on the horn
button assy top surface or in the grooved portion.
H42649
2. HORN BUTTON ASSY (VEHICLE INVOLVED IN COLLI-
SION AND AIRBAG IS NOT DEPLOYED)
(a) Perform a diagnostic system check (see page 05-777 ).
(b) With the horn button assy removed from the vehicle, per-
form a visual check. If there are any defects as mentioned
below, replace the horn button assy or steering wheel
assy with a new one:
S Cuts, minute cracks or marked discoloration on the
H42355 horn button assy top surface or in the grooved por-
tion.
S Cracks or other damage to the connectors.
S Deformation of the steering wheel assy.
Horn Button Contact Plate S Deformation of the horn button contact plate of the
horn button assy.
H42356
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 3007
60-13
SUPPLEMENTAL RESTRAINT SYSTEM - SUPPLEMENTAL RESTRAINT SYSTEM
S There should be no interference between the horn
button assy and steering wheel assy, and the clear-
ance should be uniform all the way around when the
new horn button assy is installed on the steering
wheel assy.
CAUTION:
For removal and installation procedures of the horn button
assy, see page 60-19 . Be sure to follow the correct proce-
H42650 dure.
3. INSTR PNL PASS L/DOOR AIRBAG ASSY (VEHICLE
NOT INVOLVED IN COLLISION)
(a) Perform a diagnostic system check (see page 05-777 ).
(b) With the instr pnl pass l/door airbag assy installed on the
vehicle, perform a visual check. If there are any defects
as mentioned below, replace the instrument panel with a
new one:
Cuts, minute cracks or marked discoloration on the instru-
H42651 ment panel around the instr pnl pass l/door airbag assy.
4. INSTR PNL PASS L/DOOR AIRBAG ASSY (VEHICLE
INVOLVED IN COLLISION AND AIRBAG IS NOT
DEPLOYED)
(a) Perform a diagnostic system check (see page 05-777 ).
(b) With the instr pnl pass l/door airbag assy removed from
the vehicle, perform a visual check. If there are any de-
fects as mentioned below, replace the instr pnl pass l/door
airbag assy, instrument panel or instrument panel rein-
H42652 forcement with a new one:
S Cuts, minute cracks or marked discoloration on the
instr pnl pass l/door airbag assy.
S Cracks or other damage to the wire harness or con-
nector.
S Deformation or cracks on the instrument panel or
instrument panel reinforcement.
CAUTION:
For removal and installation procedures of the instr pnl
pass l/door airbag assy, see page 60-31 . Be sure to follow
the correct procedure.
H42653
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 3008
60-14
SUPPLEMENTAL RESTRAINT SYSTEM - SUPPLEMENTAL RESTRAINT SYSTEM
5. FRONT SEAT AIRBAG ASSY (VEHICLE NOT IN-
VOLVED IN COLLISION)
(a) Perform a diagnostic system check (see page 05-777 ).
(b) With the front seat airbag assy installed on the vehicle,
perform a visual check. If there are any defects as men-
tioned below, replace the front seatback assy with a new
one:
Cuts, minute cracks or marked discoloration on the front
H42672 seatback assy around the front seat airbag assy.
6. FRONT SEAT AIRBAG ASSY (VEHICLE INVOLVED IN
COLLISION AND AIRBAG IS NOT DEPLOYED)
(a) Perform a diagnostic system check (see page 05-777 ).
(b) With the front seat airbag assy removed from the vehicle,
perform a visual check. If there are any defects as men-
tioned below, replace the front seat airbag assy with a
new one:
S Cuts, minute cracks or marked discoloration on the
H42168 front seat airbag assy.
S Cracks or other damage to the wire harness or con-
nector.
CAUTION:
For removal and installation procedures of the front seat
airbag assy, see page 72-12 (power seat) or 72-22 (manual
seat). Be sure to follow the correct procedure.
Front Side: 7. CURTAIN SHIELD AIRBAG ASSY (VEHICLE NOT IN-
VOLVED IN COLLISION)
(a) Perform a diagnostic system check (see page 05-777 ).
(b) With the curtain shield airbag assy installed on the ve-
hicle, perform a visual check. If there are any defects as
mentioned below, replace the front pillar garnish, RR win-
dow side garnish assy No.2 or roof headlining assy with
a new one:
Cuts, minute cracks or marked discoloration on the front
pillar garnish, RR window side garnish assy No.2 or roof
Rear Side: headlining assy around the curtain shield airbag assy.
H42799
H42800 H42993
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 3009
60-15
SUPPLEMENTAL RESTRAINT SYSTEM - SUPPLEMENTAL RESTRAINT SYSTEM
8. CURTAIN SHIELD AIRBAG ASSY (VEHICLE IN-
Front Side:
VOLVED IN COLLISION AND AIRBAG IS NOT
DEPLOYED)
(a) Perform a diagnostic system check (see page 05-777 ).
(b) With the curtain shield airbag assy removed from the ve-
hicle, perform a visual check. If there are any defects as
mentioned below, replace the curtain shield airbag assy
with a new one:
S Cuts, minute cracks or marked discoloration on the
curtain shield airbag assy.
S Cracks or other damage to the connectors.
Rear Side:
CAUTION:
For removal and installation procedures of the curtain
shield airbag assy, see page 60-40 . Be sure to follow the
correct procedure.
H42673
9. AIRBAG SENSOR ASSY CENTER (VEHICLE NOT INVOLVED IN COLLISION)
(a) Perform a diagnostic system check (see page 05-777 ).
10. AIRBAG SENSOR ASSY CENTER (VEHICLE INVOLVED IN COLLISION AND AIRBAG IS NOT
DEPLOYED)
(a) Perform a diagnostic system check (see page 05-777 ).
11. AIRBAG SENSOR ASSY CENTER (VEHICLE INVOLVED IN COLLISION AND AIRBAG IS
DEPLOYED)
(a) Replace the airbag sensor assy center (see page 60-56 ).
CAUTION:
For removal and installation procedures of the airbag sensor assy center, see page 60-56 . Be sure
to follow the correct procedure.
HINT:
The airbag sensor assy center should be replaced after any of the airbags has deployed, as it has been sub-
jected to the impact.
12. AIRBAG SENSOR FRONT (VEHICLE NOT INVOLVED IN COLLISION)
(a) Perform a diagnostic system check (see page 05-777 ).
13. AIRBAG SENSOR FRONT (VEHICLE INVOLVED IN COLLISION AND AIRBAG IS NOT
DEPLOYED)
(a) Perform a diagnostic system check (see page 05-777 ).
(b) When the front bumper of the vehicle or its periphery is damaged, check if there is any damage to the
airbag sensor front. If any of the airbag sensor front have defects as mentioned below, replace it with
a new one:
S Cracks, dents or chips in the case.
S Cracks or other damage to the connector.
S Peeling off of the label or damage to the serial number.
CAUTION:
For removal and installation procedures of the airbag sensor front, see page 60-58 . Be sure to follow
the correct procedure.
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 3010
60-16
SUPPLEMENTAL RESTRAINT SYSTEM - SUPPLEMENTAL RESTRAINT SYSTEM
14. AIRBAG SENSOR FRONT (VEHICLE INVOLVED IN COLLISION AND AIRBAG IS DEPLOYED)
(a) Replace the airbag sensor front (see page 60-58 ).
CAUTION:
For removal and installation procedures of the airbag sensor front, see page 60-58 . Be sure to follow
the correct procedure.
HINT:
The airbag sensor front on the impacted side should be replaced after the horn button assy or instr pnl pass
l/door airbag assy has deployed.
15. SIDE AIRBAG SENSOR ASSY (VEHICLE NOT INVOLVED IN COLLISION)
(a) Perform a diagnostic system check (see page 05-777 ).
16. SIDE AIRBAG SENSOR ASSY (VEHICLE INVOLVED IN COLLISION AND AIRBAG IS NOT
DEPLOYED)
(a) Perform a diagnostic system check (see page 05-777 ).
(b) When the center pillar of the vehicle or its periphery is damaged, check if there is any damage to the
side airbag sensor assy. If there are any defects as mentioned below, replace the side airbag sensor
assy with a new one:
S Cracks, dents or chips in the case.
S Cracks or other damage to the connector.
S Peeling off of the label or damage to the serial number.
CAUTION:
For removal and installation procedures of the side airbag sensor assy, see page 60-60 . Be sure to
follow the correct procedure.
17. SIDE AIRBAG SENSOR ASSY (VEHICLE INVOLVED IN COLLISION AND AIRBAG IS DEPLOYED)
(a) Replace the side airbag sensor assy (see page 60-60 ).
CAUTION:
For removal and installation procedures of the side airbag sensor assy, see page 60-60 . Be sure to
follow the correct procedure.
HINT:
The side airbag sensor assy on the impacted side should be replaced after the front seat airbag assy and
curtain shield airbag assy have deployed.
18. AIRBAG SENSOR REAR (VEHICLE NOT INVOLVED IN COLLISION)
(a) Perform a diagnostic system check (see page 05-777 ).
19. AIRBAG SENSOR REAR (VEHICLE INVOLVED IN COLLISION AND AIRBAG IS NOT DEPLOYED)
(a) Perform a diagnostic system check (see page 05-777 ).
(b) When the quarter panel of the vehicle or its periphery is damaged, check if there is any damage to the
airbag sensor rear. If there are any defects as mentioned below, replace the airbag sensor rear with
a new one:
S Cracks, dents or chips in the case.
S Cracks or other damage to the connector.
S Peeling off of the label or damage to the serial number.
CAUTION:
For removal and installation procedures of the airbag sensor rear, see page 60-62 . Be sure to follow
the correct procedure.
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 3011
60-17
SUPPLEMENTAL RESTRAINT SYSTEM - SUPPLEMENTAL RESTRAINT SYSTEM
20. AIRBAG SENSOR REAR (VEHICLE INVOLVED IN COLLISION AND AIRBAG IS DEPLOYED)
(a) Replace the airbag sensor rear (see page 60-62 ).
CAUTION:
For removal and installation procedures of the airbag sensor rear, see page 60-62 . Be sure to follow
the correct procedure.
HINT:
The airbag sensor rear on the impacted side should be replaced after the curtain shield airbag assy has
deployed.
21. SEAT POSITION AIRBAG SENSOR (VEHICLE NOT INVOLVED IN COLLISION)
(a) Perform a diagnostic system check (see page 05-777 ).
22. SEAT POSITION AIRBAG SENSOR (VEHICLE INVOLVED IN COLLISION)
(a) Perform a diagnostic system check (see page 05-777 ).
(b) Even if the airbag was not deployed, perform a visual check for damage to the seat position airbag
sensor including the following:
S Cracks, dents or chips in the case.
S Cracks or other damage to the connector.
CAUTION:
For removal and installation procedures of the seat position airbag sensor, see page 60-64 . Be sure
to follow the correct procedure.
23. OCCUPANT CLASSIFICATION ECU (VEHICLE NOT INVOLVED IN COLLISION)
(a) Perform a diagnostic system check (see page 05-777 ).
24. OCCUPANT CLASSIFICATION ECU (VEHICLE INVOLVED IN COLLISION)
(a) Perform a diagnostic system check (see page 05-777 ).
(b) Even if the airbag was not deployed, perform a visual check for damage to the occupant classification
ECU including the following:
S Cracks, dents or chips in the case.
S Cracks or other damage to the connectors.
CAUTION:
For removal and installation procedures of the occupant classification ECU, see page 60-67 . Be sure
to follow the correct procedure.
25. WIRE HARNESS AND CONNECTOR (VEHICLE NOT INVOLVED IN COLLISION)
(a) Perform a diagnostic system check (see page 05-777 ).
26. WIRE HARNESS AND CONNECTOR (VEHICLE INVOLVED IN COLLISION)
(a) Perform a diagnostic system check (see page 05-777 ).
(b) Check for breaks in all wires of the SRS wire harness and exposed conductors.
(c) Check to see if the SRS wire harness connectors are cracked or chipped.
HINT:
The SRS wire harness is integrated with the engine room main wire, instrument panel wire, instrument panel
wire No.2, seat wire No.1, floor wire, floor wire No.2 and roof wire No.2.
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 3012
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