Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Service manual — part 611
AB-11
Airbag Connector
AIRBAG SYSTEM
8. BUCKLE SWITCH RH
1) How to disconnect:
CAUTION:
When pulling the slide lock or disconnecting
connector, be sure to hold the connector, not
the harness.
(1) Move the slide lock (A) in the direction of ar-
row and hold it.
(2) While holding the slide lock (A), pull the con-
nector (B) in the direction of arrow.
2) How to connect:
CAUTION:
Be sure to insert the connector in until it is
locked. Then pull it gently to make sure that it is
locked.
Holding the connector, push it in securely until a
clicking sound is heard.
9. FRONT SUB SENSOR
1) How to disconnect:
CAUTION:
When pulling the slide lock or disconnecting
connector, be sure to hold the connector, not
the harness.
(1) Push the lock arm.
(2) Holding outer part, pull it one step in the di-
rection of arrow.
(3) Push the lock arm again.
(4) Holding outer part, pull it in the direction of
arrow to disconnect the connector.
2) How to connect:
CAUTION:
Be sure to insert the connector in until it is
locked. Then pull it gently to make sure that it is
locked.
Holding the connector, push it in securely until a
clicking sound is heard.
10.OCCUPANT DETECTION SYSTEM (BE-
TWEEN AIRBAG REAR HARNESS AND
SEAT HARNESS) AND BELT TENSION
SENSOR
Refer to the occupant detection system section.
<Ref. to OD(diag)-11, OCCUPANT DETECTION
SYSTEM (BETWEEN AIRBAG REAR HARNESS
AND SEAT HARNESS) AND BELT TENSION
SENSOR, PROCEDURE, Airbag Connector.>
AB-01899
(A)
(B)
AB-01900
AB-02032
(2)
(1)
AB-02033
(3)
(4)
AB-02034
AB-12
Inspection Locations after a Collision
AIRBAG SYSTEM
3. Inspection Locations after a
Collision
A: REPLACEMENT
Replace the following parts if the airbag has been
activated.
1. FRONT COLLISION
1) Driver’s airbag module
2) Passenger’s airbag module
3) Driver’s seat belt (pretensioner)
4) Passenger’s seat belt (pretensioner)
5) Airbag control module
6) Front sub sensor
7) Roll connector
8) Passenger’s side seat cushion pad and frame
assembly
9) Instrument panel (for integrating with passen-
ger’s airbag module)
2. SIDE COLLISION
1) Airbag control module
2) Satellite safing sensor
3) Satellite safing sensor cover
4) Side airbag module (operating side seat back-
rest)
5) Side airbag sensor (operating side)
6) Curtain airbag module (operating side)
7) Curtain airbag sensor (operating side)
3. INSPECTION OF OTHER PARTS
Check for the following parts, and replace the dam-
aged parts with new parts.
1) Steering wheel and steering shaft
Check the steering shaft for mounting conditions
and deflection of front and rear, upward and down-
ward directions, and deflection of front and rear di-
rection with tilt lever released. (After a collision,
absorbing part of steering shaft may have been op-
erated.)
2) Check the direct type connector of driver’s air-
bag module, curtain airbag module, pretensioner,
etc. for damage, and also check each harness for
pinch and connector damage. Replace the main
harness as a unit if damage is found.
3) Check the seat cushion, backrest, seat rail and
headrest for installing condition and play.
4) For the passenger’s seat, replace the seat cush-
ion pad frame assembly with a new part if the seat
cushion frame assembly is deformed or cracked.
5) If there are tears or loosening in the passenger
side seat cushion cover, it may interfere with the
proper operation of the passenger detection sys-
tem. Replace with a new cushion cover.
6) Be sure to perform the system calibration for the
occupant detection system after removing or re-
placing the passenger seat cushion cover. Failure
to do so may cause improper operation of the occu-
pant detection system. <Ref. to OD(diag)-14, SYS-
OPERATION, Subaru Select Monitor.>
7) Use the Subaru Select Monitor to check whether
the front right seat belt buckle switch is operating
normally.
B: INSPECTION
If the vehicle is involved in a collision, even if it is a
slight collision, be sure to check the following sys-
tems.
1. DRIVER’S AIRBAG MODULE
1) Check for the following, and replace the dam-
aged parts with new parts.
• Airbag module is cracked or deformed.
• Harness and/or connector is cracked, deformed
or open.
• Harness wire is exposed.
• The module surface is fouled with grease, oil,
water or cleaning solvent.
2) When installing a new driver’s airbag module,
check for the following, and replace the damaged
parts with new parts.
• The steering wheel is in the way, making it diffi-
cult to install the airbag module.
• The clearance between the driver’s airbag mod-
ule and steering wheel is not constant.
• When steering wheel deformation in axial and
vertical directions exceed limits.
Standard:
Axial deflection A (deflection of steering
wheel)
Less than 6 mm (0.24 in)
Vertical deflection L (runout of steering
wheel)
Less than 17 mm (0.68 in)
AB-00028
L
A
AB-13
Inspection Locations after a Collision
AIRBAG SYSTEM
2. PASSENGER’S AIRBAG MODULE
Check for the following, and replace the damaged
parts with new parts.
• Airbag module is cracked or deformed.
• Harness and/or connector is cracked, deformed
or open.
• Harness wire is exposed.
• Mounting bracket is cracked or deformed.
3. SIDE AIRBAG MODULE
Check for the following, and replace the damaged
parts with new parts.
• Front seat, airbag module and mounting bracket
are damaged or deformed.
• Harness and/or connector is cracked, deformed
or open.
• Harness wire is exposed.
4. CURTAIN AIRBAG MODULE
Check for the following, and replace the damaged
parts with new parts.
• Airbag cover is scratched or torn.
• Harness and/or connector is cracked, deformed
or open.
• Harness wire is exposed.
• Mounting bracket and securing clip are cracked
or deformed.
5. AIRBAG CONTROL MODULE
Check for the following, and replace the damaged
parts with new parts.
• Control module is cracked or deformed.
• Mounting bracket is cracked or deformed.
• Connector is scratched, cracked or deformed.
• Airbag has been activated.
• Side airbag has been activated.
• Curtain airbag has been activated.
6. FRONT SUB SENSOR
If the section of vehicle as shown in the figure is
damaged, check the following items and replace
the damaged parts with new parts.
• Front sub sensor is cracked or deformed.
• Connector is scratched, cracked or deformed.
• Airbag has been activated.
7. SATELLITE SAFING SENSOR, SIDE AIR-
BAG SENSOR AND CURTAIN AIRBAG
SENSOR
If the section of vehicle as shown in the figure is
damaged, check the following items and replace
the damaged parts with new parts.
• Satellite safing sensor, side airbag sensor and
curtain airbag sensor are cracked or deformed.
• Mounting bracket is cracked or deformed.
• Satellite safing sensor cover is cracked or de-
formed.
• Connector is scratched, cracked or deformed.
• Side airbag or curtain airbag has been activated.
(operating side)
8. ROLL CONNECTOR
Check for the following, and replace the damaged
parts such as cracks, deformation, etc. with new
parts.
• Combination switch
• Steering roll connector
9. STEERING SHAFT
Measure the overall length of steering column.
If the length is not within the specification, the
steering column may be damaged. Replace it with
a new part.
Standard: Overall length L
Tilt and telescopic column (measure while min-
imized)
818.6
+1.5
–1.5
mm (32.23
+0.059
–0.059
in)
AB-00029
AB-01869
AB-00728
L
AB-14
Inspection Locations after a Collision
AIRBAG SYSTEM
10.PASSENGER’S SEAT
1) Check for the following, and replace the dam-
aged parts with new parts.
• Seat belt buckle body or bracket is scratched,
cracked or deformed.
• Backrest frame for crack or deformation
• Headrest for deformation or play
• If the seat cushion cover and seat backrest cover
is scratched or coming loose, replace with a new
cover and readjust the system. <Ref. to OD(diag)-
14, SYSTEM CALIBRATION (REZEROING), OP-
ERATION, Subaru Select Monitor.>
CAUTION:
If any of the following applies, replace the seat
cushion pad and frame assembly. Do not disas-
semble.
• Cracks or deformation found in the seat
cushion frame or seat cushion pad.
• Scratches, cracks, or deformation found on
the passenger detection system pressure sen-
sor hoses or passenger detection control mod-
ule, or attachment brackets of the control
module.
• Harness and/or connector is cracked, de-
formed or open. Harness wire is exposed.
2) After checking the installing condition of passen-
ger’s seat, perform the system calibration of occu-
pant detection system. <Ref. to OD(diag)-14,
SYSTEM CALIBRATION (REZEROING), OPERA-
11.BELT TENSION SENSOR
Check for the following, and replace the damaged
parts with new parts.
• Belt tension sensor is scratched, cracked, or de-
formed.
• Harness and/or connector is cracked, deformed
or open. Harness wire is exposed.
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