Supplemental restraint system--Note
Special tools and measurers which any safety airbag repairing position should have:
Changeable subassembly which safety airbag repairing position should have:
a. Safety airbag assembly at the side of driver;
b. Safety airbag assembly at the side of passanger;
c. Helix cable assembly.
d. ECU assembly;
e. Steering wheel.
I. Safety airbag joint
No. ItemApplicable
(1) Terminal dual-locking organization
(2) Airbag anti-explosive organizationJoint 3, 4, 7, 8
(3) Checking organization of electric circuit connection
(4) Inadequacy connection protection organization Joint 4
(5) Joint dual-locking organization Joint 2
(6) Joint dual-locking organizationJoint 6, 7, 10
Safety airbag at the
side of passengerSafety airbag at
the side of driver
Helix
cable
Airbag controller
1. All safety airbag joints should be yellow to be easy to distinguish the joints on other automobile parts,
this could guarantee the safety performance and reliability of safety airbag joint, each kind of joint has
special function and design.
240
Number
a
b
c
d
eFunction
Disassemble airbag subassembly on steering wheel
Assemble and disassemble big nut on steering column
Assemble and disassemble ECU and safety airbag assembly
at the side of passenger on automobile body.
Used for electric measurement on wiring harness
Used for resistance measurement of electric ignition device
of airbag subassembly. Name and type of tool
5S hexagon wrench
Socket wrench 18S
14S socket wrench
Numeric multi-meter DT 992 type
Electric detonator tester
QJ992 type
Short
wiring
harness
Inspection
I. The inspection for airbag module at the side of
driver could be divided into three situations:
Automobile is not impacted, automobile is impacted but
airbag does not explode, and automobile is impacted and
airbag explodes.
1. Automobile is not impacted:
a. Make malfunction diagnostic inspection,
b. Check the safety airbag assembled on steering wheel
with your eyes,
including following items mainly:
Check whether the airbag has any cut, small crack or the surface and concave slot of airbag has
obvious changed color.
2. Automobile is impacted but airbag does not explode:
a. Make malfunction diagnostic inspection,
b. Check the disassembled safety airbag with your eyes, including following items mainly:
Check whether the airbag has any cut, small crack or the surface and concave slot of airbag has
obvious changed color.
Check whether wiring harness has any cut, crack or joint has any flaw,
Check whether steering wheel has distorted,
Check whether the plug and wiring harness of helix cable has been damaged, the loudspeaker wiring
harness plug and wiring harness has been damaged or distorted,
Check whether contacting board of steering wheel loudspeaker button has been distorted (if it has
been distorted, it is necessary to change with new safety airbag module, forbid repairing it),
Interruption situation could happen between safety airbag module and steering wheel lower defend-
ing cover, and when new airbag module is assembled on steering wheel, its surrounding clearance
must be even (Assemble and disassemble of driver airbag module should accord with correct step to
work).
3. Automobile is impacted and airbag explodes:
a. Make malfunction diagnostic inspection,
b. Check the disassembled safety airbag with your eyes, including following items mainly:
Check whether the plug and wiring harness of helix cable has been damaged, the loudspeaker wiring
harness plug and wiring harness has been damaged or distorted,
Check whether wiring harness has any cut, crack or joint has any flaw,
Check whether steering wheel has distorted,
Interruption situation could happen between safety airbag
module and steering wheel lower defending cover, and
when new airbag module is assembled on steering wheel,
its surrounding clearance must be even (Assemble and
disassemble of driver airbag module should accord with
correct step to work)
II. The inspection for airbag module at the side of
passenger could be divided into three situations:
Automobile is not impacted, automobile is impacted but
airbag does not explode, and automobile is impacted and
airbag explodes.
Supplemental restraint system--Inspection
Safety airbag module at
the side of passengerChange the
wiring harness
of airbag
249
Diagnosis of impacted automobile
No matter whether the safety airbag has been unfolded, the inspection and maintenance for impacted auto-
mobile should be made by following sequence.
1. Check the ECU diagnostic signal.
(1) Connect the diagnostic joint of diagnostic tool,
(2) Use diagnostic tool to read the diagnostic result.
2. Repair sequence
Note: For the impact, when power supply of battery is lack, diagnostic tool could not communicate
with ECU, at this time, it is necessary to check and maintain the wiring harness of panel or use
exterior power supply.
(1) When safety airbag has been unfolded,
Following parts should be changed with new ones
a. Safety airbag assembly at the side of passenger
b. ECU
c. Safety airbag assembly at the side of driver
d. Pre-tension safety belt at the side of driver and passenger
Check the following parts, if they are abnormal, change them with new ones
a. Helix cable
b. Steering wheel, steering column, combination switch
Assembling state for steering wheel of safety airbag assembly at the side of driver
a. Check whether there is any abnormal noise in steering wheel, its action is flexible and clearance is
normal.
b. Check whether the joint of wiring harness is damaged or terminal is distorted.
Supplemental restraint system--Remove malfunction
260
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
Audio system--Outdoor antenna
Outdoor antenna
Change
1. Disassemble battery negative wire
2. Put the front tyre forward
3. Disassemble safety airbag assembly at the side of the driver
4. Disassemble steering wheel
5. Disassemble integration instrument cap
6. Disassemble integration instrument
7. Disassemble panel NO.3 air outlet
8. Disassemble panel NO.1 air outlet
9. Disassemble panel center air outlet trim board
10. Disassemble glove box
11. Disassemble right front pillar trim board
12. Disassemble left front pillar trim board.
13. Disassemble the joint of the safety airbag at the side of the passenger
14. Disassemble panel
15. Disassemble right front door trim board.
16. Disassemble right side trim board.
17. Disassemble antenna assembly [67000136]
(a) Take removable antenna pillar plug apart from radio.
18. Assemble antenna assembly [67000136]
19. Assemble panel
20. Assemble helix cable.
21. Assemble steering wheel
22. Inspect steering wheel whether it dead against the center.
23. Inspect horn button.
24 Assemble horn button
25. Inspect SRS warning light
312
Panel/combination instrument-- panel
CodeShape
CodeShape
CodeShape
<>
=4.8
=13
2204813<>
=4.8
=19
2754819<>
=6
=20
1740620
<>
=4.8
=9.5
2754895<>
=6
=16
1400616<>
=6
=20
1400620
Panel
Preparation
1. Automobile prepares to equip with SRS airbag and safety belt pre-tension crimper.
Parking disassembling and assembling works in this chapter might influence SRS airbag. Before imple-
menting these works, it is necessary to read the notes in SRS chapter.
Change
1. Schedule for bolt, screw and screw cap
Note: when using screw driver to unclench fixing clasp or fixing clamp, it is necessary to wrap
the needled top of wrench with adhesive tape.
Hint: when disassembling or assembling panel, if necessary, use the figure and code in following
table to choose bolt, screw and screw cap.
2. Preparation
3. Disassemble leading wire of battery cathode
4. Turn front wheel to face the front
340
mm