Supplemental restraint system--Disassemble and assemble

Disassemble and assemble

Electronic control unit of safety airbag (ECU)

1. Note (referring to chapter 1)

2. Disassembling sequence:

(1) Disassemble the cover board at the side of central channel (or disassemble auxiliary panel).
(2) Disassemble the connector connecting with safety airbag ECU.
(3) Disassemble the ECU.

3. Assembling sequence

(1) Check the ECU assembly, and make arrow direction on hint card point to running direction of automobile.
(2) Assemble the connector connecting with safety airbag ECU, the connector should be locked firmly (if

you hear a light sound “KA” when press the connector, this shows it has been locked).
a. Fix the special bolt used by controller assembly on assembling position of central channel, and

confirm it has been assembled firmly.

b. Assemble the cover board at the side of central channel (or assemble auxiliary panel).
c. Connect the cathode of battery.

4. Main notes of assembling operation:

(1) When assembling ECU assembly, pay attention to that ECU assembly could not be impacted.
(2) Inspection after the assembling

a. Set the ignition switch at ON position.
b. Indicating light illuminates at 7 second, and continues to extinguish.
c. If it does not extinguish, it is necessary to check and remove malfunction.

Note: if ECU could not be assembled correctly, safety airbag will not work normally.

5. Inspection: referring to chapter 2.

6. Removing malfunction: referring to chapter 3.

3. Place the steering wheel and front wheels correctly

and make them face the front, and take out ignition

switch key, then do not operate it in 60 seconds af-

ter disassembling the cathode of battery.

4. Disassemble safety airbag assembly at the side of

driver:

(1) Guarantee the wheels face the front.
(2) Use 5s hexagon socket-head wrench to loosen the two plan-

etary bolts.

(3) Pull out the safety airbag assembly at the side of driver

from upside of steering wheel.

Safety airbag assembly at the side of driver

1. Note (referring to chapter 1).

2. Use the flash or malfunction diagnostic tool to test malfunction (referring to chapter 1

and 3).

 261 

Supplemental restraint system--Disassemble and assemble

(4) Disassemble the joint of loudspeaker and airbag wiring

harness.

(5) Take down safety airbag module at the side of driver.

Note: Disassembled safety airbag assembly at the side

of driver should make its bottom surface face
the upwards, and it should be stored in clean
and dry environment.

5. Check the safety airbag assembly at the side of

driver.

6. Disassemble steering wheel:

Disassemble assembling screws to take down steering wheel
from the middle position.
Note: For the mesh of spline and column is too tight, steer-

ing wheel is hard to disconnect from the column, at
this time, pay attention to do not disassemble the
steering wheel compulsively, it is necessary to
screw the screws on column, then lift the steering
wheel up (for steering wheel connects with helix
cable at its bottom, if disassembling steering wheel
compulsively, helix cable will be damaged).

7. Disassemble the lower cover of combination switch

Disassemble three screws and lower cover of combination
switch.

8. Disassemble helix cable:

(1) Slide the upper cover of combination switch.
(2) Disassemble airbag joint from helix cable.
(3) Disassemble three fixed claws and helix cable.

Note: disassembled helix cable should be stored in

clean and dry environment.

9. Check the helix cable:

(1) When assembling new helix cable, check whether the yel-

low fixed clamp on helix cable is good, if yellow clamp drops,
please adjust by the requirement on hint card of helix cable,
insure helix cable could turn left and right for 2.5 circles on
its existing fixed position.

(2) If finding following situations, it is necessary to change the

helix cable with new one.
a. There are some scratches or cracks on joint.
b. There are cracks, concaves or flaws on wiring harness

of helix cable.

10. Remove malfunction (referring to chapter 3).

11. Make the wheels face the front.

Note: it is necessary to make the front wheels face the

front, or the wires in helix cable might break in steer-
ing process.

12. Assemble helix cable:

(1) Inspection before assembling (referring to item 9).
(2) Set the steering light switch at middle position.

The pin of steering light switch may be broken, so it must
be confirmed whether the pin is at central position.

 262 

Fixed claw

Safety airbag assemble at the side of passenger

1. Note (referring to chapter 1).

2. Use the flash or malfunction diagnostic tool to test the malfunction (referring to chapter

1 and 3).

3. Disconnect the connection of cathode of battery, and do not operate in 60 seconds after

disconnecting.

4. Disassemble the glove box.

5. Disassemble the joint of safety airbag at the side of passenger, and do not damage

airbag wiring harness carefully.

6. Disassemble the safety airbag assembly at the side of passenger.

a. Disassemble three connecting bolts from the bracket of safety airbag assembly at the side of passenger.
b. Take down the safety airbag assembly from panel.

7. Check the safety airbag assembly at the side of passenger (referring to chapter 2).

8. Assemble airbag assembly.

a. Check whether the connection between safety airbag module and airbag short wiring harness is firm.
b. Firstly, insert the module in assembling position from the upside of panel, secondly, align the assem-

bling hole of small bracket on module with the assembling hole on framework of panel, at the same
time, the module cover and panel clearance should be even, and the barb on module should be con-
nected to its position.

9. After assembling, use malfunction diagnostic tool or malfunction indicating light to

check and confirm the malfunction has been removed.

(3) Make three fixed claws mesh steering column.

When changing with new helix cable, it is necessary to disassemble yellow clamp before assembling.

(4) Insert the plug of airbag wiring harness in the plug of helix cable and make this connection firm.

Align  the

mark

Supplemental restraint system--Disassemble and assemble

 263 

(4) After assembling, use malfunction diagnostic tool or malfunction indicating light to check

and confirm the malfunction has been removed.

(5) Connect the lower cover of combination switch.
(6) Connect the upper cover of combination switch with the

lower cover with special bolts firmly.

13. Set the helix cable at middle position

a. Check whether ignition switch locates OFF state.
b. Check whether the cathode end of battery has been

disassembled.
Note: do not operate in 60 seconds after disassembling

cathode end.

c. Turn helix cable anticlockwise with hand until it could not

be turned.

d. Then turn the helix cable clockwise for 2.5 circles to align

the mark.

14. Assemble steering wheel

(1) Inspection before assembling:

 

Steering wheel

 

Connecting wiring harness

 

Safety airbag assembly at the side of driver

(2) Tighten the assembling screws at both sides.
(3) Connection of battery terminal  “-”.

Scrap treatment for safety airbag

Hint:

When scraping a automobile with SRS or disposing safety airbag module, it is necessary to explode the airbag by

following steps at first.

If there is any abnormal phenomenon when exploding airbag, please contact with our service store or automobile

factory in time.

Note:

  

 

Forbid exploding the safety airbag module that does not explode by yourself.

  

When exploding the airbag, it will make much big explosive sound, so it is necessary to operate this out of the

automobile, please do not make this operation influence the life of near habitants to avoid their complaints.

  

When exploding the airbag, use the battery as power supply whose voltage is (12±1)V.

  

When exploding the airbag, operator should be apart from the exploded module and he should confirm there is

not anyone in the scope of 10m at least.

    When disposing the exploded airbag module, it is necessary to wear glove and safety glass.

  

When airbag is exploded, the temperature of airbag module is too high, and a lot of gas with peculiar smell will

be produced, so do not make any treatment for exploded airbag in 30 minutes after exploding it.

 

Please wash your hands with water after finishing those operations above.

 

Do not sprinkle water on exploded airbag module.

 

When scraping a automobile, the safety airbag module assembled on automobile should be exploded.

I. Scrap the safety airbag module on automobile

1. Treatment before exploding:

(1) Park the automobile on flat place.
(2) Disassemble the cathode and anode of battery and disassemble the battery from automobile.

Note: do not work until disassembling the cathode and anode of battery for 60 seconds.

(3) Safety airbag assembly should be unfolded by following sequence.

2. Safety airbag assembly at the side of driver

(1) Disassemble three screws and lower cover of combination switch.
(2) Disassemble the lower end of helix cable and the joint connecting with panel wiring harness.
(3) Connect the conversion wiring harness of safety airbag with one wiring harness with over 10 m used

for unfolding, and the connecting part should be twisted with insulation adhesive tape to insulate and
prevent from wrong unfolding for static.
Note: take down the joint of helix cable from panel wiring harness, the joint of helix cable

will be short circuit automatically, this will prevent from exploding the safety airbag
assembly at the side of driver for static to make heavy accident.

Supplemental restraint system--Scrap treatment for safety airbag

 264 

(4) Connect conversion wiring harness of safety airbag on yel-

low joint of helix cable, then lead it out of automobile with
unfolding wiring harness (see following figure).

(5) Close all windows and doors, and assemble automobile

cover.

(6) Cut off the joint of wiring harness used for unfolding of safety

airbag assembly at the side of driver at the place apart from
the automobile, then connect it with two ends of battery
taken from automobile to make it explode (see following
figure).

Cover of automobile body

Wiring harness for explosion