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AB Airbag Sys Subaru wrx

Mar 01, 2018

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    AIRBAG SYSTEM

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    2/20AB-2

    AIRBAG SYSTEMGENERAL DESCRIPTION

    1. General Description

    A: COMPONENT

    1. SRS AIRBAG

    (1) Combination switch ASSY with roll

    connector

    (6) Hexagon head bolt (exclusive use) Tightening torque: Nm (kgf-m, ft-lb)

    (7) Side airbag sensor T1: 5.9 (0.59, 4.4)(2) TORXbolt T30 (8) Side airbag harness T2: 7.4 (0.75, 5.4)

    (3) Airbag module ASSY (Drivers

    side)

    (9) Side airbag module T3: 10 (1.0, 7.2)

    (10) Airbag main harness T4: 20 (2.0, 14.5)

    (4) Airbag module ASSY (Passen-

    gers side)

    (11) Front sub sensor harness T5: 25 (2.5, 18.1)

    (12) Front sub sensor

    (5) Airbag control module (13) TORXbolt T30

    AB-00483

    T3

    T2

    T5

    T3

    T3

    T4

    (2)

    (4)

    (11)

    (3)

    (1)

    (2)

    (11)

    (12)

    (9)

    (10)

    (13)

    (8)

    (7)

    (6)

    (5)

    T1

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    AIRBAG SYSTEMGENERAL DESCRIPTION

    B: CAUTION When servicing a vehicle, be sure to turn the ig-nition switch to OFF, disconnect the ground cablefrom battery, and wait for more than 20 secondsbefore starting work. The airbag system is fitted with a backup powersource. If the airbag system is serviced within 20

    seconds after the ground cable is disconnected, itmay inflate.

    If the airbag warning light illuminates, repair thevehicle immediately. Airbag or pretensioner may in-flate incorrectly, or not inflate in collision. If sensors, airbag module, airbag control module,pretensioner, and harness are deformed or dam-aged, replace them with new genuine parts.

    When checking the airbag system, be sure touse a digital circuit tester.Infinitesimal electric current in an analog circuittester may cause the airbag to activate erroneous-ly.

    When checking, use a test harness (1). Do notdirectly apply the tester probe to any connector ter-minal of the airbag. Damage to the connector termi-nal may cause the airbag to activate erroneously.

    Do not check continuity of either of the airbagmodules for driver, passenger or side, or preten-sioner.

    FU-00009

    AB-00120

    AB-00121

    AB-00122

    (1)

    AB-00006

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    AIRBAG SYSTEMGENERAL DESCRIPTION

    Do not drop the airbag modulator parts, subjectthem to high temperature over 93C (199F), or letwater, oil, or grease get on them; otherwise, the in-ternal parts may be damaged and reliability greatlylowered.

    If any damage, opening, or rust is found on theairbag system wire harness, do not attempt to re-pair using soldering equipment. Be sure to replacethe faulty harness with a new genuine part.

    Install the wire harness securely with the speci-fied clips to avoid interference or tangled up withother parts.

    Do not allow water or oil to come in contact withthe connector terminals. Do not touch the connec-tor terminals.

    Either of the airbag modules for driver, passen-ger or side, or pretensioner must not be disassem-bled.

    AB-00123

    AB-00124

    AB-00125

    AB-00126

    AB-00127

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    5/20AB-5

    AIRBAG SYSTEMGENERAL DESCRIPTION

    The removed front seat with the airbag modulemust be kept at least 200 mm (8 in) away from wallsand other objects.

    Do not use the airbag or pretensioner parts fromother vehicles. Always replace defective parts withnew parts.

    Never reuse a deployed airbag or pretensioner. When painting or performing sheet metal workon the front part of the vehicle, including the frontwheel apron, front fender, and front side frame, re-move the front sub sensors and wire harness of theairbag system. When painting or performing sheet metal workon the side of the vehicle, including the side sill,center pillar, and front and rear doors, remove theside airbag sensors and wire harness of the airbagsystem.

    (1) More than 200 mm (8 in)

    AB-00128

    (1)

    AB-00129

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    AIRBAG SYSTEMGENERAL DESCRIPTION

    When storing a removed airbag module, do not place any objects on it or pile airbag modules on top ofeach other. If the airbag inflates for some reason when it is placed with its pad side facing downward or underany object, a serious accident may result.

    (1) Drivers airbag module (2) Passengers airbag module

    AB-00130

    (2)

    (1)

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    AIRBAG SYSTEMGENERAL DESCRIPTION

    C: PREPARATION TOOL

    1. GENERAL TOOL

    TOOL NAME REMARKS

    TORXT30Used for removal/installation of drivers airbag module, side air-

    bag sensor.

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    AIRBAG SYSTEMAIRBAG CONNECTOR

    2. Airbag Connector

    A: OPERATION

    1. POWER SUPPLY

    1) How to disconnect:(1) Move the slide lock (A) in the direction of the

    arrow.(2) Pull the female connector in the direction ofthe arrow with slide lock (A) moved.

    CAUTION:When pulling, be sure to hold onto the connec-tor and not the wire.

    2) How to connect:Holding the connector (A), and push it in carefullyuntil a connecting sound is heard.

    CAUTION:Be sure to insert the connector in until it locks.Then pull on it gently to make sure that it islocked.

    2. DRIVERS AIRBAG (BETWEEN AIRBAG

    HARNESS AND ROLL CONNECTOR), PAS-SENGERS AIRBAG AND SIDE AIRBAG

    1) How to disconnect:(1) Push the lock arm (A).

    (2) With the lock arm (A) pushed in, move theslide lock (B) in the direction of the arrow.

    (3) With the slide lock (B) pulled, remove thelock arm (A) to its original position, and then pullin the direction of the arrow and separate theconnector.

    CAUTION:When pulling, be sure to hold onto the connec-

    tor and not the wire.

    2) How to connect:Holding the connector, and push it in carefully untila connecting sound is heard.

    CAUTION:Be sure to insert the connector in until it locks.Then pull on it gently to make sure that it islocked.

    AB-00015

    AB-00016

    AB-00017

    (A)

    (B)

    AB-00018

    AB-00019

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    AIRBAG SYSTEMAIRBAG CONNECTOR

    3. DRIVERS AIRBAG MODULE AND PRE-TENSIONER

    1) How to disconnect:(1) Using a flat tip screwdriver, pry the pushlock upward to unlock.

    (2) Pull the connector to disconnect from driv-ers side airbag module assembly.

    2) How to connect:Connect the connector in reverse order of discon-

    necting. At this time, be sure to insert the connectorin until connecting sound is heard.

    CAUTION: Be sure to insert the connector in until itlocks. Then pull on it gently to make sure that itis locked. At this time, be sure to insert the push lock in.

    4. FRONT SUB-SENSOR AND SIDE AIR-BAG SENSOR

    1) How to disconnect:Holding outer part (A), pull it in the direction of thearrow.

    CAUTION:

    When pulling, be sure to hold onto the connec-tor and not the wire.

    2) How to connect:Holding the connector, and push it in carefully untila connecting sound is heard.

    CAUTION: Outer (A) moves back, and so do not put yourhand on the outer part. Be sure to insert the connector in until itlocks. Then pull on it gently to make sure that itis locked.

    AB-00478

    AB-00479

    AB-00480

    AB-00024

    AB-00025

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    10/20AB-10

    AIRBAG SYSTEMINSPECTION LOCATIONS AFTER A COLLISION

    3. Inspection Locations After aCollision

    A: REPLACEMENTWhen airbag system is deployed, replace the fol-lowing parts.

    1. FRONT COLLISION1) Drivers airbag module2) Passengers airbag module3) Drivers seat belt (pretensioner)4) Passengers seat belt (pretensioner)5) Airbag control module6) Front sub-sensor7) Roll connector

    2. SIDE COLLISION

    1) Airbag control module2) Side airbag module (operating side seat bag)

    3) Side airbag sensor (operating side)3. INSPECTION OF OTHER PARTS

    Check for the following parts, replace the damagedparts with new ones.1) Steering wheel and steering shaftCheck the steering wheel and steering shaft formounting condition and deflection of axial and rad-ical, upward and downward direction. Check thesteering shaft for deflection of axial and radical di-rection with tilt lever released. (After a collision, ab-sorbing part of steering shaft may inflate.)2) Check the direct type connector of drivers air-

    bag module, pretensioner, etc. for damage, andalso check each harness for pinch and connectordamage. If damage is found, replace the harnessas a unit.

    B: INSPECTIONIf the vehicle is involved in a collision on any side,even if it is a slight collision, be sure to check thefollowing system parts.

    1. DRIVERS AIRBAG MODULE

    1) Check for the following, and replace damagedparts with new parts.

    Airbag module is cracked or deformed. Harness and/or connector is cracked, deformedor open. Lead wire is exposed. The module surface is fouled with grease, oil,water or cleaning solvent.2) When installing a new drivers airbag module,check the following. If necessary, install a new air-bag module and steering wheel. The steering wheel is in the way, making it diffi-cult to install the airbag module.

    The clearance between the drivers airbag mod-ule and steering wheel is not constant. The steering wheel deformation in axial and radi-al directions exceed limits.

    Specifications:Height deflection A

    Less than 6 mm (0.24 in)

    O.D. deflection LLess than 17 mm (0.67 in)

    2. PASSENGERS AIRBAG MODULE

    Check for