como cambiar bolsa de aire

Buen día amigos del foro, les comento que tengo una grand caravan modelo 96, motor 3.3 y resulta que después de un ligero golpe se me activo la bolsa de aire del copiloto (lo bueno que iba solo) y necesito su ayuda para saber si se le tiene que mover algo aparte de desconectar el cable de la bolsa, destornillar la caja en la que viene la bolsa, ponerla la otra (que adquirí en un corralón) y conectar de nuevo el cable.

Por su ayuda muchas gracias. Saludos desde Tapachula Chiapas.

Es un tema algo complejo para encararlo,hay que tener cierta capacitación para efectuar ese trabajo,pero si quieres intentarlo desconecta la batería y espera al menos 30 minutos para que se descarguen los condensadores y no exista el peligro de que se disparen los airbags,luego procede al cambio de la bolsa,comentanos como te va,suerte.

Comparto manual para darle servicio a los componentes de la bolsa de aire
Grand Caravan ES 3.3L 1996
COMPONENT SERVICE
DRIVER'S SIDE AIR BAG MODULE, REPLACE
Use extreme caution to prevent any foreign material from entering driver's air bag module, or becoming trapped between trim cover and module. Failure to observe this warning could result in occupant injuries upon air bag deployment.
1.Disarm air bag system air bag system as outlined under "Air Bag System Disarming & Arming."
2.Remove driver's air bag module nuts to steering wheel, Fig. 1.
3.Lift air bag module and disconnect electrical connector.
4.Remove driver's air bag module.
5.Reverse procedure to install, noting the following. Arm air bag system as outlined under "Air Bag System Disarming & Arming."
6.Torque driver air bag module to 80-100 inch lbs.
CLOCKSPRING, REPLACE
Removal
1.Disarm air bag system as outlined under "Air Bag System Disarming & Arming."
2.Set front wheels in straight ahead position.
3.Note electrical connectors and wiring harness routing at this time.
4.Remove driver's air bag module as outlined under "Driver's Side Air Bag Module, Replace."
5.Remove remote radio control and speed control switches and their electrical connectors, or the blank covers.
6.Disconnect horn electrical connector.
7.Note any markings or hub alignment flats, then remove steering wheel attaching nut.
8.Remove steering wheel using a suitable puller tool.
9.On models equipped with tilt steering, remove tilt steering lever.
10.On all models, remove steering column shrouds.
11.Remove steering column opening cover, knee blocker and the lower fixed column shroud.
12.Disconnect all clockspring electrical connectors.
13.Move clockspring locating fingers or pins as needed, then gently pull clockspring assembly from steering column.
14.Visually inspect clockspring for bends or kinks, and replace if any are indicated.
Centering
The clockspring may fail during use if its rotating portion is not properly positioned with the steering column and front wheels. The following procedure must be used if the clockspring is not known to be properly positioned:
1.Place front wheels in straight-ahead position.
2.Move locking pins or tabs as needed to disengage locking mechanism, Fig. 2.
3.From end of travel, rotate clockspring rotor three turns counterclockwise. All wires should end up on top.
4.Release locking fingers or pins to engage clockspring mechanism.
Installation
1.Install clockspring onto steering column. If clockspring is not properly positioned refer to "Centering" procedure.
2.Cconnect clockspring to instrument panel electrical connectors, ensuring locator clips and lock pins or tabs are properly positioned.
3.Install all steering column shrouds and instrument panel trim. Ensure air bag wire is inside shrouds.
4.Ensure front wheels are in straight-ahead position, then install steering wheel, with hub flats or markings properly aligned.
5.Route wiring harnesses in same positions as noted during removal procedure. Ensure leads are not pinched under steering wheel.
6.Connect all electrical connectors at their proper locations.
7.Install driver's air bag module as outlined under "Driver's Side Air Bag Module, Replace."
8.Install remote radio control and speed control switches, or the blank covers.
9.Arm air bag system as outlined under "Air Bag System Disarming & Arming."
10.Torque steering wheel nut to 45 ft. lbs.

Grand Caravan ES 3.3L 1996
PASSENGER'S SIDE AIR BAG MODULE, REPLACE
Use extreme care to prevent any foreign material from entering the passenger side air bag module, or becoming entrapped between the instrument panel top cover and the passenger side air bag module. Failure to observe this warning could result in occupant injuries upon air bag deployment.
Non-Deployed
1.Disarm air bag system as outlined under "Air Bag System Disarming & Arming."
2.Disconnect glove compartment door and allow door to fully open.
3.Remove passenger's air bag module mounting screws.
4.Pry passenger's air bag module up with large flat tipped screwdriver to unsnap door from trim pad, then lift away from snaps, Fig. 3.
5.Holding on to door, lift passenger's air bag module from opening and rest air bag module on trim pad.
6.Disconnect electrical connectors and remove passenger's air bag module.
7.Reverse procedure to install, noting the following. Arm air bag system as outlined under "Air Bag System Disarming & Arming."
8.Torque passenger air bag module to 50 inch lbs.
Deployed
1.Disarm air bag system as outlined under "Air Bag System Disarming & Arming."
2.Clean powder residue from vehicle interior as outlined under "Clean Up Procedure." in "Air Bag System Disarming & Arming."
3.Open lower console door, then remove lower console mounting screws.
4.Slide lower console rearward from instrument panel supports, then remove lower console from vehicle.
5.Remove lower heat duct to instrument panel supports attaching screw.
6.Remove bolts retaining lower instrument panel supports to instrument panel and floor pan.
7.Remove lower instrument panel supports from instrument panel.
8.Disconnect passenger's air bag module electrical connector.
9.Remove front door sill and A-Pillar trim covers.
10.Open glove compartment door, then disconnect stop cord from glove compartment door.
11.Pivot glove compartment door downward to disconnect hinges from instrument panel, then remove glove compartment from vehicle.
12.Disconnect antenna lead connector through glove compartment opening.
13.Remove steering column lower trim panel, then the stiffener panel.
14.Disconnect two 40-pin connectors from junction block at lefthand side of steering column.
15.Disconnect instrument panel harness connector from body control module.
16.Disconnect two 40-pin connectors from junction block at righthand side of steering column.
17.Remove pinch bolt from steering column coupler, then disconnect steering column from lower shaft.
18.Remove instrument panel mounting bolts from brake pedal support.
19.Disconnect gearshift cable from gear selector lever, then remove gearshift cable and bracket from steering column.
20.Disconnect hood release handle from instrument panel, then position cable and handle aside.
21.Disengage clips at rear edge of top instrument panel covers using suitable flat bladed tool.
22.Disconnect wiring harness connector from message center.
23.Pull top cover rearward to disengage clips and release top cover from instrument panel.
24.Pry righthand and lefthand instrument panel end covers from instrument panel using suitable flat bladed tool.
25.Disconnect wiring harness connectors from heating and air conditioning unit through glove compartment opening.
26.Remove instrument panel to cowl panel upper attaching bolts, then loosen, but do not remove lower cowl panel to instrument panel bolts.
27.Remove instrument panel to body attaching bolts located below windshield.
28.Remove instrument panel assembly from vehicle.
29.Remove all reusable components from instrument panel retainer.
30.Reverse procedure to install, noting the following:
a.Install all reusable components to a new instrument panel retainer.
b.Install new passenger's air bag module into instrument panel.
c.Arm air bag system as outlined under "Air Bag System Disarming & Arming."
AIR BAG CONTROL MODULE (ACM), REPLACE
1.Disarm air bag system as outline under "Air Bag System Disarming & Arming."
2.Remove forward lower console from instrument panel.
3.Remove lower heat duct mounting screws and lower heat duct from instrument panel.
4.Remove righthand support bolts and righthand support from instrument panel.
5.Disconnect ACM electrical connectors.
6.Remove ACM bracket assembly bolts from floor and remove ACM. Do not remove ACM from its mounting bracket. This is included with new ACM.
7.Reverse procedure to install, noting the following. Arm air bag system as outlined under "Air Bag System Disarming & Arming."
8.Torque air bag controll module to 85-105 inch lbs.
AIR BAG SYSTEM DIAGNOSTIC MODULE (ASDM), REPLACE
1.Disarm air bag system as outlined under "Air Bag System Disarming & Arming."
2.Remove forward console, Fig. 4.
3.Remove module and bracket attaching screws.
4.Carefully lift module up and rearward, disconnect electrical connectors, then remove module.
5.Reverse procedure to install, noting the following:
a.Position module and bracket facing forward.
b.Arm air bag system as outlined under "Air Bag System Disarming & Arming."

FRONT IMPACT SENSORS, REPLACE
1.Disarm air bag system as outlined under "Air Bag System Disarming & Arming."
2.Remove upper radiator closure crossmember to sensor attaching nuts.
3.Disconnect sensor electrical connector, then remove.
4.Reverse procedure to install, noting the following. Arm air bag system as outlined under "Air Bag System Disarming & Arming."
OCCUPANT RESTRAINT CONTROLLER (OCR), REPLACE
1.Disarm air bag system as outlined under "Air Bag System Disarming & Arming."
2.Remove storage bin from instrument panel, then the three bolts from ORC bracket.
3.Disconnect electrical connector from ORC, then remove ORC with bracket from vehicle.
4.Reverse procedure to install, noting the following. Arm air bag system as outlined under "Air Bag System Disarming & Arming."
5.Torque occupant restraint controller to 65-85 inch lbs.
SEAT BELT RETRACTOR & TENSIONER, REPLACE
1.Disarm air bag system as outlined under "Air Bag System Disarming & Arming."
2.Remove shoulder belt height control knob.
3.Remove turning loop to belt adjuster bolt.
4.Remove upper B-Pillar trim.
5.Remove access cover from B-Pillar trim.
6.Disengage B-Pillar trim attaching clips.
7.Route seat belt turning loop and belt through trim panel.
8.Remove lower B-Pillar trim.
9.Disconnect seat belt retractor electrical connector.
10.Remove retractor mounting fasteners, then the retractor.
11.Reverse procedure to install, noting the following:
a.Ensure all wiring is properly routed to avoid pinching.
b.Arm air bag system as outlined under "Air Bag System Disarming & Arming."
SIDE IMPACT AIR BAG CONTROL MODULE (SIACM), REPLACE
1.Disarm air bag system as outlined under "Air Bag System Disarming & Arming."
2.Remove lower B-Pillar trim from appropriate side of vehicle.
3.Disconnect SIACM electrical connectors.
4.Remove three screws, then the SIACM from vehicle.
5.Reverse procedure to install, noting the following. Arm air bag system as outlined under "Air Bag System Disarming & Arming."
6.Torque side impact air bag control module to 50-70 inch lbs.
AIR BAG MODULE DISPOSAL
After deployment, air bag module should be placed in a plastic bag and disposed of in same manner as any other scrap components, except that following points should be carefully noted during disposal.
1.When handling deployed air bag assembly, face shield and rubber gloves should be worn.
2.There may be, adhered to air bag module, material that could irritate eyes and/or skin. Note following: If any irritation develops, seek medical attention.
a.If sinus or throat irritation is encountered during air bag removal, exit vehicle and breath fresh air.
b.If material does come in contact with eyes and/or skin, immediately rinse affected area with a large amount of cool, clear water.
c.If sinus, throat, skin or any other type of irritation continues, consult a physician.
3.After handling a deployed air bag assembly, wash hands and rinse thoroughly with water.
4.Inflator will be quite hit immediately after deployment, wait 30 minutes to allow air bag to cool.
5.Do not put water or oil on air bag after deployment.
6.Put deployed air bag in a hermetically sealed container and discard it.
7.Use a vacuum cleaner to remove any residual powder from vehicle interior as follows:
a.Work from outside to center of vehicle.
b.Vacuum A/C vent, defroster and heater ducts.
c.Run blower motor on low speed and vacuum any powder expelled from plenum.
d.It may be required to vacuum interior of vehicle a second time to ensure all powder is recovered.
8.An air bag that has been deployed should be removed as outlined under "Driver's Air Bag Assembly, Replace" or "Passenger's Air Bag Assembly, Replace."
9.Prior to removing a deployed air bag assembly, place tape over air bag exhaust vents.
10.Before disposing of a vehicle equipped with air bag(s), or prior to disposing of air bag module, the module must be deployed as follows:
a.If vehicle is to be scrapped, deploy air bag(s) inside vehicle.
b.If vehicle is to continue in service, air bags must be removed and deployed outside vehicle.