GEELY FC 2008 Workshop Manual

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.
 250 

Supplemental restraint system--Remove malfunction
Remove malfunction
Malfunction table
lThe voltage disappears (fuse is cut off)
l Combination instrument happens malfunction
lWiring harness between instrument package
and ECU unit has malfunction Malfunction Test statePossible reason
Indicating light of
safety airbag
system does not
illuminateWarning 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 itemSpecification
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.
zPower supply of battery is lack
zECU has inner malfunction
zIndicating light of combination meter safety airbag has
malfunction
zPlug connection of ECU has malfunction
zPlug of combination meter contacts badly
zPower supply fuse of ECU is cut off or contacts badly
zPlug terminal of ECU contacts badly
zWiring harness between plug terminal and grounding of
ECU contacts badly
zSafety airbag circuit at the side of driver or passenger
has malfunction. Malfunction Test statePossible reason
Indicating light of
safety airbag sys-
tem illuminates
usuallyIndicating light of safety
airbag system illumi-
nates usually
2. Indicating light of safety airbag system illuminates usually
 252 

(3) Confirm the malfunction will not happen again after repairing,
a. Set ignition switch at LOCK position,
b. Cut off cathode of battery, and keep this state for one minutes at least,
c. Connect all ECU plugs,
d. Connect the subassembly plug of safety airbag at the side of driver,
e. Connect the subassembly plug of safety airbag at the side of passenger,
f. Connect the plug of pre-tension safety belt at the side of driver and passenger,
g. Connect the plug of helix cable,
h. Connect the cathode of battery,
i. Set ignition switch at ON position,
j. Does the indicating light of safety airbag work correctly?
Yes: malfunction has been removed, and the repair procedure should be explained for customers,
No: Check the malfunction state again, then if malfunction happens again, repeat from step 1.
3. Inner malfunction
Inner malfunction of safety airbag system unit
Test conditionWarning
zTest condition for this malfunction is the malfunction code which does not happen
before checking, DTC makes the inspection, it might incur wrong operation to hurt
human or system when making this inspection, so it is necessary to make preparation
before the inspection.
zInner circuit of electronic control unit of safety airbag system has malfunction.
Power voltage of electronic control unit of safety airbag system is too low.
Test conditionWarning
zTest condition for this malfunction is the malfunction code which does not happen
before checking, DTC makes the inspection, it might incur wrong operation to hurt
human or system when making this inspection, so it is necessary to make preparation
before the inspection.
zThe voltage of safety airbag system unit and the grounding connector pin is less than
9V.
Possible reasonzThe voltage of battery is too low.
The wiring harness between battery and electronic control unit of safety airbag system
has malfunction.
4. Malfunction of power supply
Supplemental restraint system--Remove malfunction
 253 
Possible reason
OperationInner malfunction in safety airbag system unit
Change the safety airbag system unit, referring to the disassembling and assembling of
safety airbag system and safety airbag system unit.

Diagnostic procedure
(1) Check the battery
zIs the voltage higher than 9V?
Yes: make next operation,
No: The voltage of battery is too low, check the charging/discharging system.
zRefer to chapter 1, Inspection of battery, charging system
(2) Check the wiring harness between battery and safety boox.
zDisassemble fuse panel to set ignition switch at ON position without loosening connector.
zMeasure whether the voltage of related two pins of fuse panel is more than 9V?
Yes: make next step
No: check and repair the wiring harness.
(3) Check the wiring harness between fuse panel and the connector of safety airbag system unit.
Warning:
If the treatment is wrong, safety airbag assembly might be triggered to unfold 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.
a. Set ignition switch at LOCK position,
b. Loosen the cathode cable of battery and keep this state for one minute at least,
c. Disassemble the shell body of steering column,
d. Loosen the connector of helix cable,
e. Disassemble glove box (with safety airbag assembly at the side of passenger),
f. Loosen the connector of safety airbag assembly at the side of passenger,
g. Disassemble left inner trim board,
h. Loosen the connectors of all safety airbag system units,
i. Assemble cathode cable of battery, and set the ignition switch at ON position, then measure
whether the voltage of safety airbag system unit and grounding connector pin is more than 9V?
Yes: make next step,
No: change the wiring harness.
j. Set the ignition switch at LOCK position,
Loosen the cathode cable of battery and keep this for one minute at least.
k . Disassemble left inner trim board,
l. Cut off the conversion connector of safety airbag system unit,
m. Assemble cathode cable of battery, and set the ignition switch at ON position, then measure
whether the voltage of safety airbag system unit and grounding connector pin is more than 9V?
Yes: malfunction diagnosis ends,
No: change the wiring harness.
Supplemental restraint system--Remove malfunction
 254 

5. Malfunction at the side of driver
Malfunction of safety airbag at the side of driver (resistance is too big or too small,
short circuit, grounding and so on)
Test conditionWarning
zIf the treatment is wrong, safety airbag assembly might be triggered to unfold 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.
zThe resistance between connector pins of safety airbag system unit is not in regulated
scope.
Related wiring harness of driver airbag in safety airbag system happens short circuit or
open circuit.
Possible reason
zSafety airbag assembly at the side of driver has malfunction.
zHelix cable has inner malfunction.
zConnector of the circuit between helix cable and electronic control unit of safety airbag
system has malfunction.
zWiring harness between helix cable and electronic control unit of safety airbag system
happens open circuit or short circuit.
zConnector of driver gas generator in safety airbag system is not inserted well.
Diagnostic procedure
(1) Check helix cable
Warning
If the treatment is wrong, safety airbag assembly might be triggered to unfold 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.
zIs every related part of helix cable normal? (Whether the relationship between pins is normal,
whether there is any unnecessary short circuit, open circuit and other phenomenon)
Normal: make next step
Abnormal: change the helix cable
Refer to safety airbag system, disassembling and assembling of helix cable
(2) Confirm whether the malfunction is on safety airbag assembly at the side of driver or other parts.
a. Change it with a good safety airbag assembly at the side of driver,
b. Assemble the cathode cable of battery,
c. Set ignition switch at ON position,
d. Is there the display of malfunction code? Could it be removed?
Yes: change the safety airbag assembly at the side of driver
Refer to safety airbag system, disassembling and assembling of safety airbag assembly at
the side of driver.
No: make next step
(3) Check the connector of helix cable wiring harness
a. Set ignition switch at LOCK position.
b. Loosen the cathode cable of battery and keep this state for one minute at least,
c. Disassemble shell body of steering column,
d. Loosen connector of helix cable,
e. Is the connector of helix cable normal? (Whether the relationship between pins is normal, whether
there is any unnecessary short circuit, open circuit and other phenomenon)
Normal: make next step
Abnormal: change the helix cable
Refer to safety airbag system, disassembling and assembling of helix cable
Supplemental restraint system--Remove malfunction
 255 

(4) Check the wiring harness between helix cable and electronic control unit of safety airbag system
a. Set ignition switch at LOCK position,
b. Loosen the cathode cable of battery and keep this state for one minute at least,
c. Disassemble glove box (with safety airbag assembly at the side of passenger),
d. Loosen the connector of safety airbag assembly at the side of passenger,
e. Disassemble left inner trim board,
f. Loosen the connectors of all safety airbag system units,
g. Check the wiring harness between connector pole of safety airbag system unit and helix cable
connector pin.The wiring harness between safety airbag system at the side of passenger unit con-
nector pin and helix cable connector pin has following situation:
zEarth
zShort connection with power supply
zShort circuit
h. Are the wiring harnesses above normal?
i. Normal: malfunction diagnosis ends, assemble all parts
j. Abnormal: change the wiring harness.
6. Malfunction at the side of passenger
Diagnostic procedure
(1) Check the connector of safety airbag assembly at the side of passenger
zIf the treatment is wrong, safety airbag assembly and pre-tension safety belt might be triggered to
unfold 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.
Malfunction of safety airbag at the side of passenger (resistance is too big or too
small, short circuit, grounding and so on)
Test conditionWarning
zIf the treatment is wrong, safety airbag assembly and pre-tension safety belt might be
triggered to unfold 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.
zThe resistance between connector pin 13 and pin 14 of safety airbag system unit is not
in regulated scope.
zThe wiring harness between connector pin 13 and pin 14 of safety airbag system unit
happens short circuit.
Possible reason
zSafety airbag assembly at the side of passenger has malfunction.
zConnector between safety airbag assembly at the side of passenger and electronic con-
trol unit of safety airbag system has malfunction.
zConnector between safety airbag system unit and grounding position has malfunction.
zThe circuit between safety airbag assembly at the side of passenger 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.Supplemental restraint system--Remove malfunction
 256 

a. Set ignition switch at LOCK position,
b. Loosen the cathode cable of battery and keep this state for one minute at least,
c. Disassemble glove box,
d. Loosen the connector of safety airbag assembly at the side of passenger,
e. Is the connector of safety airbag assembly at the side of passenger normal?
Normal: make next step,
Abnormal: change the wiring harness
(2) Confirm malfunction reason is on safety airbag assembly at the side of passenger or on other parts.
a. Connect a good assembly on connector pin A and B of safety airbag assembly at the side of
passenger,
b. Connect the cathode cable of battery,
c. Set the ignition switch at ON position,
d. Is there the display of malfunction code? Or could the malfunction code be removed?
No: make next step
Yes: change the safety airbag assembly at the side of passenger.
Refer to safety airbag system, disassembling/assembling of safety airbag assembly at the side of
passenger.
(3) Check the wiring harness between safety airbag assembly at the side of passenger and electronic
control unit of safety airbag system.
a. Set ignition switch at LOCK position,
b. Loosen the cathode cable of battery and keep this state for one minute at least,
c. Disassemble the shell body of steering column,
d. Loosen the connector of helix cable,
e. Loosen the connector of safety airbag assembly at the side of passenger and driver,
f. Disassemble left inner trim board,
g. Loosen the connectors of all safety airbag system units,
h. Check the circuit between connector pin of safety airbag system electronic control unit and the
circuit between connector pin of safety airbag assembly at the side of passenger, and the circuit
between connector pin of safety airbag system unit and safety airbag assembly at the side of
passenger has following situation:
zEarth
zShort connection with power supply
zOpen circuit
i. Are the wiring harnesses above normal?
Normal: malfunction diagnosis ends
Abnormal: change related wiring harness.
Supplemental restraint system--Remove malfunction
 257 

Malfunction of pre-tension safety belt (resistance is too big or too small, short circuit,
grounding and so on)
Test condition
Warning
zIf the treatment is wrong, safety airbag assembly and pre-tension safety belt might be
triggered to unfold 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.
If having pre-tension safety belt
zThe resistance between connector pin 1, 2 or pin 3, 4 of safety airbag system unit is
not in regulated scope.
zThe wiring harness between connector pin 1, 2 or pin 3, 4 of safety airbag system unit
happens short circuit.
zThe wiring harness between connector pin 1, 2 or pin 3, 4 of safety airbag system unit
happens open circuit, if there is not safety airbag at the side passenger.
Possible reason
zSafety belt pre-tension has malfunction.
zConnector between safety belt pre-tension and electronic control unit of safety airbag
system has malfunction.
zConnector between safety belt pre-tension and grounding position has malfunction.
zThe circuit between safety belt pre-tension 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.
7. Malfunction of pre-tension safety belt
Diagnostic procedure
(1) Check the connector warning of safety belt pre-tension
zIf the treatment is wrong, pre-tension safety belt might be triggered to unfold to make heavy hu-
man hurt, so, before the treatment, it is necessary to read repairing warnings carefully.
Refer to repairing warning of safety airbag system.
a. Set the ignition switch at the LOCK position,
b. Loosen the cathode cable of battery and keep this state for one minute at least,
c . Disassemble B column defending board
d. Loosen the safety belt pre-tension connector
e. Is the safety belt pre-tension connector normal?
Normal: make next step
Abnormal: change the wiring harness
(2) Confirm malfunction reason is on pre-tension safety belt or on other parts.
a. Connect a good pre-tension safety belt on safety belt pre-tension connector,
b. Connect cathode cable of battery,
c. Set ignition switch at ON position,
d. Could the malfunction code be removed?
No: make next step,
Yes: change pre-tension safety belt.
Refer to safety airbag system, disassembling/assembling of pre-tension safety belt.
(3) Check the wiring harness between the pre-tension safety belt at the side of passenger and electronic
control unit of safety airbag system
a. Set ignition switch at LOCK position,
b. Loosen the cathode cable of battery and keep this state for one minute at least,
c. Loosen the connector of safety belt pre-tension module,
Supplemental restraint system--Remove malfunction
 258 

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