d. Loosen the connectors of all safety airbag system units,
e. Check whether the connector between electronic control unit of safety airbag system and the
circuit between connector of safety belt pre-tension have following situations:
zEarth
zShort connection with power supply
zOpen circuit
f. Are the wiring harnesses above normal?
Normal: malfunction diagnosis ends
Abnormal: change related wiring harness.
8. Malfunction of impact output
Malfunction of safety airbag assembly at the side of passenger (resistance is too big
or too small, short circuit, grounding and so on)
Resting conditionWarning
zIf the treatment is wrong, safety airbag assembly and pre-tension safety belt might be
triggered to unfold and tighten to make heavy human hurt, so, before the treatment, it
is necessary to read repairing warnings carefully.
Refer to repairing warning of safety airbag system.
Possible reason
zConnector between impact output circuit and electronic control unit of safety airbag sys-
tem has malfunction.
zConnector between safety airbag system unit and grounding position has malfunction.
zThe circuit between impact output circuit and electronic control unit of safety airbag
system happens open circuit or short circuit.
zCircuit between safety airbag system unit and grounding position happens open circuit
or short circuit.
zSafety airbag system unit has malfunction.
(1) Check whether this airbag controller has impact output function
a. Set ignition switch at LOCK position
b. Loosen the cathode cable of battery and keep this state for one minute at least
(2) Check whether the connection of impact output connector is good,
(3) Check whether the impact output connecting wire is earth or is short connecting with other wires,
(4) Check whether impact output connecting wire is open circuit,
(5) Check whether the central control door lock control system or electric injection control system of
engine has been changed,
Note: If repairing it by the steps above and requirements, indicating light or diagnostic tool
could display the mistakes before repairing all the time, please do not change it by
yourself, you should contact with the manufacturer as soon as possible avoid wrong
explosion or no explosion when using airbag.
Supplemental restraint system--Remove malfunction
259
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
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:
z Steering wheel
z Connecting wiring harness
z Safety airbag assembly at the side of driver
(2) Tighten the assembling screws at both sides.
(3) Connection of battery terminal “-”.
Safety belt--Front safety belt
(1) Connect special tool with battery,
Connect the red clamp of special tool with the anode of
battery (+), and black clamp with the cathode of battery
(-).
Hint: Do not connect the yellow joint with safety
belt pre-tension crimper.
(2) Confirm the function of special tool.
Press working switch of special tool, then the LED on
switch should illuminate.
Warning: if working switch is not pressed, LED
illuminates, then special tool might have
malfunction, at the this time, do not use the
special tool.
(b) Disassemble the joint of safety belt pre-tension crimper.
(1) Disassemble panel trim board of front door,
(2) Disassemble panel trim board of rear door.
(3) Disassemble lower fixed bolts and trim cover of safety
belt.
(4) Disassemble lower inner trim board of middle column.
(5) Liking that shown in figure, disassemble the joint of safety
belt pre-tension crimper.
(c) Assemble special tool
(1) Assemble lower fixed bolts and trim cover of safety belt.
(2) Connect two special tools with lower fixed bolts and trim
cover of safety belt..
Note: to avoid damaging the joint and wiring har-
ness of special tool, do not lock the twice lock
of dual-lock organization.
(3) Move the special tool apart from the front end of auto-
mobile for 10m at least.
(4) Close all doors and windows.
Note: do not damage wiring harness of special tool.
(5) Connect the read clamp of special tool with the anode
of battery (+), and black clamp with the cathode of bat-
tery (-).
Special
toolBattery
Special
tool
Special
toolSpecial
tool
Over 10m
271
Safety belt--Front safety belt
(d) Explode safety belt pre-tension crimper.
(1) Confirm there is no one in automobile and in 10m scope apart from automobile.
(2) Press down working switch of special tool and explode safety belt pre-tension crimper.
Hint: when LED of working switch of special tool illuminates, safety belt pre-tension crimper will
explode charged gas at the same time.
(e) Treatment for safety belt pre-tension crimper.
Hint: when scraping automobile, it is necessary to explode safety belt pre-tension crimper,
then it could be scraped with automobile.
2. Only treatment for safety belt pre-tension crimper (Treatment type for exploding front
seat safety belt).
Note:
zwhen only exploding safety belt pre-tension crimper,
forbid using the automobile belonging to customer to
explode safety belt pre-tension crimper.
zWhen exploding safety belt pre-tension crimper, it is
necessary to accord with following step.
(a) Disassemble safety belt.
Hint:cut off safety belt at its position closing to
shrinker.
(b) Confirm the function of special tool.
(c) Assemble special tool.
(1) Connect two joints of special tool to the joint of safety
belt pre-tension crimper.
Note: to avoid damaging the joint and wiring har-
ness of special tool, do not lock the twice lock
of dual-lock organization.
(2) Place the safety belt pre-tension crimper on ground, and
cover it with tyre.
Note:Place the safety belt pre-tension crimper lik-
ing that shown picturey.
(3) Place th special tool above 10mm away from tire
Note: do not damage special tool and wiring har-
ness carefully.
(d) Explode safety belt pre-tension crimper.
(1) Connect red fixed clamp of special tool to the anode of
battery (+), black fixed clamp to cathode of battery (-).
(2) Confirm there is not anyone in 10m apart from the tyre
binding safety belt pre-tension crimper.
(3) Press down working switch of special tool to explode
safety belt pre-tension crimper.
Hint: when LED of working switch of special tool
illuminates, safety belt pre-tension crimper
will explode at the same time.
Special
toolSpecial
tool
Special
toolSpecial
tool Special
toolBattery
Over 10m
272
Safety belt--Front safety belt
Subassembly
(e) Treatment for safety belt pre-tension crimper.
(1) Disassemble the tyre and special tool.
(2) Put safety belt pre-tension crimper in plastic bag, then
bind the bag for treatment with other parts.
N.
m : Regulated torque
Trim board of pedal of
front doorFront safety belt
locker assembly Trim cover of safety belt
lower fixed bolt Trim board of pedal
of rear door Front safety belt
crimper assembly Lower inner defending
board of middle columnTrim cover of safety belt
upper fixed bolt41
Q184C1020
41
Q184C1020
41
Q184C1020
41
Q184C1020
273