Geely FC. Manual part - 61
Geely FC. Manual part - 61
(3) Joint dual-locking organization:
The joint equipping with this organization (male joint and female joint) is locked by dual-locking device
to increase the reliability of connection.
If one time lock is not firm, convex block will interrupt and stop the locking of twice lock.
(1) Terminal dual-locking organization:
Each joint should be dual-locking organization and combines
with joint body and locking block. This design is caused by
the reason that dual-locking device (locking block and fixed
sheet) could fix the terminal to prevent it from releasing.
(2) Airbag anti-explosive organization
Each joint has a short circuit sheet, when the joint is
disassembled, short circuit sheet will connect the terminal
of device power supply with that terminal of igniter.
Mother
joint
Father
joint
Supplemental restraint system--Note
241
Body
Body
Body
When connecting the joint
When disconnecting the joint
Short circuit spring sheet
Short circuit spring sheet
Terminal
Detonator
Short circuit spring sheet
Short circuit spring sheet ON
Detonator
Closed circuit
Contact with father terminal
Joint
lock
lock
Twice lock
Convex block
One time lock
One time lock is not firm
(twice lock is stopped)
Twice lock is firm
(Twice lock could lock)
Dual-lock could lock
completely
Locking block
(4) Joint locking organization:
Lock the locking clasp of joint to fasten the connection of joint.
2. When the automobile front face is impacted, and generated force is bigger than the standard pre-set,
airbag will work automatically. The sensor in safety airbag controller will feel the impact, at the same
time, it will judge the generation of impact by inner arithmetic to make ignition electric current. Electric
current will flow in gas generator to make explosive function, then two gas generators in airbag at the
side of driver and passenger will make gas to increase quickly inner pressure of airbag and rush out
the trim cover of steering wheel and instrument panel. After airbag charging is closed, the gas ejects
from the gas outlet at the side or at the back of airbag.
II. Disassemble the connecting joint of lower helix cable and wiring harness of steer-
ing wheel.
1. Put your finger on sliding block.
2. Move the sliding block to release the clasp.
3. Pull out the male joint.
Liking that shown in figure: some joints of wiring harness use the female joints in the right part of figure,
some designs of helix cable is similar with the joints in the left part.
III. Connect the connecting joint of lower helix cable and wiring harness of steering wheel.
1. Liking that shown in figure, align locking part of male joint and sliding block of female joint in same
direction to avoid mutual friction.
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242
Sliding block
Sliding block
Disconnect completely
IV.
Assemble ECU joint
Figure 1 Figure 2 Figure 3
1. Press down limit switch in figure 1.
2. Dial white switch along the black line in figure 2, dial it to bottom liking that shown in figure3.
Hint: you will hear the assembling sound that shows it is put to position when white switch is
put into position.
V. Connect airbag wiring harness and short wiring harness at the side of passenger.
2. Confirm inserting it until locking, after assemble, pull it to check whether it is locked (when locking,
confirm exterior joint returns to former position, at the same time, assembling sound could hear).
Hint:
When moving the sliding block, do not contact it.
Pay attention to do not distort the release board, if release board is distorted, it is neces-
sary to change it with new helix cable.
Figure 3 Figure 4
1. Insert the connector in figure 3 in the part in figure, after assemble it into its position, you will hear hint
sound.
Supplemental restraint system--Note
243
Sliding block
Sliding block
Limit switch
2. Inspection for indicating light of safety airbag
(1) When set the ignition switch at ON position, confirm whether the indicating light illuminates.
(2) After illuminating for five seconds, confirm whether indicating light extinguishes forever.
(3) If starting ignition switch for five seconds, indicating light does not extinguish (flash or illuminate for long
time), confirm the position of system malfunction with special diagnostic tool according to the flash
situation of indicating light.
3. System diagnosis
Safety airbag controller (KD4.1) will implement a series of cycle diagnostic testing to check whether the
function of airbag system has been prepared completely. This test will prevent restraint system from
exploding wrongly and insure the necessary explosion in impact. If finding any malfunction, safety airbag
controller (KD4.1) will store a applicable malfunction code and turn on indicating light to indicate a mal-
function state to be easy to maintain.
4. Malfunction judgment
(1) Malfunction category
System malfunction could be divided into three categories: power supply malfunction, subassembly
assembling malfunction and ECU inner malfunction.
a. Power supply malfunction
Normal working voltage of ECU is 9-18 V, related working voltage is 12 V. When automobile key is
turned to ACC gear, ECU connects power and begins to self-check, indicating light extinguishes
after illuminating for five seconds, this shows there is not any malfunction in ECU and exterior
subassembly, they could work normally. When automobile power voltage is less than 9V or higher
than 18V, ECU will self-check again. If self-checking could pass, ECU works normally, and indicat-
ing light extinguishes; if self-checking could not pass, it is necessary to self-check again, this self-
checking could be made six times, if indicating light illuminates all the time after six times, there is
some malfunction in power supply.
b. Assembling malfunction of airbag subassembly
Assembling malfunction of airbag subassembly is that malfunction which only needs to change or
repair airbag subassembly without needing to change ECU, including the situation that airbag
subassembly is not connected completely. If happening this malfunction when connecting power
supply, indicating light will flash N times at first, then it will illuminate all the time until malfunction is
removed. If happening impact in malfunction term, ECU could explode the channel of good part
and record every malfunction when exploding.
c. Inner malfunction of controller
Inner malfunction is the malfunction happening in ECU body, when happening this malfunction,
ECU could not explode airbag, and will record the impacting acceleration.
Note: common repairer could not repair this inner malfunction, if happening this malfunction,
it is necessary to change ECU.
(2) Malfunction state display
Malfunction treatment
1. Basic procedure of malfunction diagnosis
After assembling new electronic control unit of safety airbag system, indicating light of safety airbag
system will extinguish forever after flashing for 5 seconds when ignition switch is at state of ON, this
shows airbag system works normally. At this time, the system does not need to repair, it is necessary
to make system diagnosis and repair when showing any situation except this.
If indicating light of safety airbag system does not illuminate when ignition switch is at the state of ON,
check the related circuits of indicating light, then operate it to make it enter working state.
Supplemental restraint system--Malfunction treatment
244
Warning light illuminate Scanning ECU by connecting Find the malfunction Deal with
Clean the code
and does not extinguish diagnostic instrument malfunction