Geely FC. Manual part - 63

Geely FC. Manual part - 63

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 passenger

Change the

wiring harness

of airbag

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Supplemental restraint system--Inspection

1. Automobile is not impacted:

a. Make malfunction diagnostic inspection,
b. Check the safety airbag assembled on panel framework with your eyes, including following items

mainly:
Check whether the airbag has any cut and small crack, the surface and concave slot of airbag has
obvious changed color, and connecting bolts are loosened.

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 connecting bolt between airbag module and panel framework has been loosened, weld-
ing part of assemble bracket has any crack or distortion, and Assemble and disassemble of passenger
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 panel has any distortion and crack;
Check whether wiring harness of safety airbag has any cut, crack or the joint has any flaw;
If there is any crack on connector between panel and safety airbag, it is necessary to change it with
new product;
When new airbag module is assembled on its position, its surrounding clearance should be even
(Assemble and disassemble of passenger airbag module should accord with correct step to work).

III. Inspection for safety airbag controller could be divided into two situations: automobile

is not impacted, and automobile is impacted but airbag does not explode.

1. Automobile is not impacted: make system inspection.
2. Automobile is impacted but airbag does not explode:

a. Make system inspection.
b. Check safety airbag controller with your eyes:

Whether the bracket has any concave, crack, distortion and so on;
Whether zincification layer of bracket is damaged;
Whether the exterior casing of controller has any crack, concave or distortion;
Whether the joint is damaged, the terminal is distorted, or wiring harness is bitten.

IV.Inspection for wiring harness.

a. Make system inspection.
b. Check whether all wiring harnesses of safety airbag (SRS) has been damaged or lead wire are exposed,

joint has been damaged, and terminal has any distortion or crack.
Hint: wiring harness of safety airbag combines with the wiring harness of whole automobile,

but the wiring harness of safety airbag is yellow.

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Supplemental restraint system--Remove malfunction

Remove malfunction

Malfunction table

l

The voltage disappears (fuse is cut off)

l

Combination instrument happens malfunction

l

Wiring harness between instrument package

and ECU unit has malfunction

Malfunction

Test state

Possible reason

Indicating light of

safety airbag

system does not

illuminate

Warning circuit of safety

airbag system happens

malfunction

1. Indicating light of safety airbag system does not illuminate

Diagnostic procedure

When making first malfunction test, we advise shaking wiring harness and plug to test whether there is

discontinuous bad contact in wire, if having this problem, please verify whether the connection of plug, terminal

and wiring harness is correct and is not damaged, if it is not this problem, please make by next step.

(1) Check other wiring harnesses and indicating lights of instrument package

a. Set ignition switch at ON position,
b. Are other warning indicating lights illuminating?

If illuminating: set ignition switch on LOCK position, then make next operation.
If not: check the power supply system and grounding system of instrument package (fuse), then
make step 5.

(2) Check the bulb

Warning: wrong treatment for safety airbag system parts will incur safety airbag and pre-

tension safety belt are opened accidentally, this might happen heavy accident. Please read

service warning of safety airbag system before disposing safety airbag parts.
a. Set ignition switch at LOCK position,
b. Cut off cathode wire of battery and keep this state for 60 seconds at least,
c. Disassemble combination instrument,
d. Measure whether corresponding two pins of indicating light of safety airbag could conduct,

Yes: make next step,
No: change the bulb of indicating light.

(3) Check the wiring harness connection between ECU unit and instrument package .

a. Set ignition switch at LOCK position,
b. Cut off cathode wire of battery,
c. Cut off the plug of instrument package ,
d. Check whether corresponding circuit of indicating light could conduct,

Yes: make next step,
No: change the wiring harness, then make step 5.

251

Number

Malfunction removing item

Specification

1

Indicating light of safety airbag system does not illuminate

Warning circuit of safety airbag system happens malfunction

2

Indicating light of safety airbag system illuminates usually

Warning circuit of safety airbag system happens malfunction or

there is exterior malfunction

Supplemental restraint system--Remove malfunction

Diagnostic procedure

When starting to check, firstly, use special diagnostic tool and ECU to make diagnostic communication to

find the reason of malfunction, if communication could not implement, make following inspection:

(1) Check the battery

a. Measure the voltage of battery
b. Is the voltage higher than 9V?

Yes: make next operation,
No: Power supply of battery is lack, check the charging/discharging system, then make step 5.

(2) Check the conduction of wiring harness between ECU and combination meter.

a. Set ignition switch at LOCK position,
b. Cut off cathode of battery,
c. Open the defending board of central channel,
d. Disconnect the connector of instrument package ,
e. Connect the cathode of battery,
f. Set ignition switch at ON position,
g. Check whether the terminal voltage of corresponding connector of instrument is 12V (connecting

wire of power supply and instrument)
Yes: make next step,
No: check the circuit part, then make step 5 after repairing it.

h. Set ignition switch at LOCK position,
i. Check whether the corresponding terminal of instrument connector conducts with corresponding

terminal of diagnostic interface (diagnose two ends of K wire),
Yes: make next step,
No: repair or change the wiring harness, then make step 5.

j. Guarantee cathode of battery is cut off and keep this state for one minutes at least, cut off connec-

tor of ECU.

k. Disconnect the plug of instrument package,
l. Check whether it conducts between ECU plug voltage, K wire, airbag indicating light terminal and

plug of instrument package ?
Yes: make next operation,
No: change the wiring harness, then make the step 5.

m. Disassemble the ECU to check whether the terminal is good, and the short circuit stick is broken.

Yes: change the ECU,
No: connect the ECU connector again, then make next operation.

Power supply of battery is lack

ECU has inner malfunction

Indicating light of combination meter safety airbag has

malfunction

Plug connection of ECU has malfunction

Plug of combination meter contacts badly

Power supply fuse of ECU is cut off or contacts badly

Plug terminal of ECU contacts badly

Wiring harness between plug terminal and grounding of

ECU contacts badly

Safety airbag circuit at the side of driver or passenger

has malfunction.

Malfunction

Test state

Possible reason

Indicating light of

safety airbag sys-

tem illuminates

usually

Indicating light of safety

airbag system illumi-

nates usually

2. Indicating light of safety airbag system illuminates usually

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