ESP GEELY FC 2008 Workshop Manual

Brief introduction on Geely model “FC” Basic parametersTable 2 Types and parameters of main assemblyModel
TypeElectric injection system modelBore
StrokeDelivery capacityCompression ratioMax. power
Max. torque
Idling speedIgnition sequenceMin. fuel consumptionTypeMain gear box ratioTypes and parameters
JL4G184-cylinderin-line, four-stroke, water-cooling, double over-head
camshaft, 16-valve, CVVT multipoint injection gasoline engineUnited Automotive Electronic Systems Co., Ltd. M7.9.7 electric injection system5 gears synchronizer of constant mesh gearDry single, diaphragm spring, constant pressure
Rack-and-pinion steering gear with hydraulic powerDouble pipeline, vacuum boosterwith ABS +EBD anti-lock systemDisc brake
Disc brake
Strut-type front independent suspensionLongitudinal swinging arm and anti-twist beam compound rear suspensionBreakawayBalI cage and tripot type constant velocity universal jointLoaded all-metal body
Honeycomb cordierite carrier, noble metal catalyst
Swirl or swash plate compressorItem nameNumber
Engine1st gear
2nd gear
3rd gear
4th gear
5th gearReverse gearClutch type
Steering gear
Tire
Body structureSpecification
Air pressureRadial
tireTail gasAir
condi-
tioning
systemUnit



//
.
//
/
/.



2
Transmission
Each gear ratio
Braking
system
Sus-
pension
Drive
axleType
Front brake
Rear brakeFront suspension type
Rear suspension typeRim
Type
Drive shaftCatalytic converterCompressor typeNominal refrigerating capacityRefrigerant

Engine control system·- EFI systemInspection1. VVT control solenoid valve assembly (4G18-1006200)(a) Resistance inspection
(1) Measure the resistance between terminals with ohmmeter
Resistance: (b) Operation inspection
Connect battery positive (+) wire to No.1 terminal and negative (-) wire to No. 2 terminal, and check
valve operation.
Note: ensure that the valve is not stuck.
Hint: if there are foreign matters in the valve, the valve could not be closed tightly and will
thus result in slight pressure being lifted toward higher direction.2. Throttle body components (4G18-1001240)(a) Inspection of throttle body
(1) Throttle valve shaft should not swing.
(2) All channels should not be blocked.
(3) Throttle valve plate should rotate flexibly and act smoothly.
(4) When the throttle is at closed position, there should be no clearance between throttle stop bolts and
throttle lever.
Note: it is not allowed to adjust the throttle stop bolts.3. Throttle position sensor (4G18-3600080)(a) Resistance inspection
(1) Remove the wiring harness connectors of throttle posi-
tion sensor.
(2) Measure the resistance between 1# pin and 2# pin with
ohmmeter, resistance value: .
(3) Connect 2 terminals respectively to 1# pin and 3# pin,
and turn the throttle, the resistance value varies linearly
with the opening of throttle, but 2# pin and 3# pin are
contrary to this.
Note:pay attention whether there is great jump with
resistance value when observing resistance change. 9

5. Water temperature sensor (4G18-3600040)This sensor applies sealing NTC thermal resistor in temperature sensor, and resistance value varies with
ambient temperature, thus slight change of outside temperature could be measured. Measuring its out-
put resistance could reflect the temperature of contact media. Signals from A and C are sent to ECU,
and Signals from B and earth are sent to instrument.
Operating principle (Fig. 1):
Note: A, B and C represent 3 pins of sensor, and see pin root for the mark. Measuring method:
(Removing the joint) place digital universal meter at ohm gear,
and connect 2 terminals respectively to 1#
pin and 2#
pin, and
the resistance under normal temperature should be more than
1M. Place digital universal meter at millivolt gear, and knock
around knock sensor with a hand hammer, there should be voltage
signal output at the moment.Engine control system·- EFI systemFig. 11 Vibration block
2 Housing
3 Piezoelectric ce-
ramics
4 Contact
5 Electric connec-
tion4. Knock sensor (4G18-3600020) 10

Characteristic curve of intake air
temperature sensor NTC resistorCharacteristic curve of
temperature sensorStepping motor ofidle speed actuator6. Intake air temperature sensor (4G18-3600090)Intake air temperature sensor is a resistor with negative tem-
perature coefficient (NTC), resistance varies with intake air
temperature, and this sensor sends a voltage indicating change
of intake air temperature to controller.
Simple measuring method:
(Removing the joint) place digital universal meter at ohm gear,
and connect 2 terminals respectively to 1# pin and 2# pin of
sensor, and rated resistance at 5%, and
other corresponding resistance values could be measured ac-
cording to the characteristic curve in above drawing. Analog
method could also be applied in measurement. Use an elec-
tric blower to blow air into the sensor (pay attention not to
keep them too near), and observe the change of resistance,
which should decrease at the moment.7. Stepping motor (4G18-3600070)Schematic diagram and pinsEngine control system·- EFI systemUse digital universal meter to measure:
Resistance-temperature characteristics of temperature sensor 11 Temperature range( Resistance at A and CResistance at B

Pins: Pin A is connected to ECU No. 65 pin
Pin B is connected to ECU No. 66 pin
Pin C is connected to ECU No. 67 pin
Pin D is connected to ECU No. 64 pin
Maintenance precautions:
1. It is not allowed to apply any force at axial direction with the purpose of pressing into or pulling out the
axle;
2. Before idle speed regulator with stepping motor is mounted into throttle body, its shaft must be at fully
retractive position;
3. Pay attention to clean and maintain bypass air passage frequently;
4. After removing battery or ECU, pay attention to self-teach stepping motor in time.
Self-teach method of M7 system: turn on ignition switch but not start engine immediately, and start it
after 5 seconds. If engine idle speed is found bad at the moment, it is
necessary to repeat the above steps.
Simple measuring method:(removing the joint) place digital universal meter at ohm gear, and connect
2 terminals respectively to Ad pin and BC pin of regulator, and rated resis-
tance at Engine control system·- EFI systemElectrical
wiring
diagram
on step-
ping motor
of idle
speed
actuator12

Exhaust gas controlExhaust gas control systemOn-vehicle inspection1. Check oxygen sensor.(a) Let the engine run at idle speed for 3 minutes to ensure oxygen sensor reaches operating tempera-
ture of 350(b) Place digital universal meter at DC voltage gear, and connect 2 terminals respectively to (gray) pin
and (black) pin of sensor, and voltage should fluctuate
quickly between 0.1-0.9V at the moment.
Warning:Perform inspection immediately after warming
up vehicle.If voltage change could not be confirmed,
it is necessary to heat oxygen sensor again.Exhaust gas control - Exhaust gas control system2. Check rotating speed after fuel cut off.(a) Accelerate engine at least to 3500rpm.
(b) Check the operating noise of injection nozzle with listening device.
(c) When throttle is released, check the operating noise of injection nozzle recovers after stop.3. Check fuel evaporation exhaust control system.(a) Check the pipe clamps of connecting pipeline between
charcoal canister and carbon canister solenoid valve are
firmly clipped and check there is leakage.
(b) Check there is trouble with fuel evaporation exhaust con-
trol system with failure diagnostic instrument.4. Visually check hose, joint and hot fin.Check cracks, leakage and damage.
Hint: the disconnecting of engine oil level gauge, oil opening
cover and PCV hose may cause running failure of engine.
The cracks, looseness and not connecting at the intake
system between throttle and cylinder head will result in
redundant air entering and running failure of engine.23

5. Check heater resistance of heated oxygen sensor.(a) Uncouple oxygen sensor joint.
(b) Place digital universal meter at ohm gear, and connect 2 terminals respectively to 1# (white) pin and
2# (black) pin, and the resistance under normal temperature is 166. Check fuel tank cover.Visually check fuel tank cover and gasket are distorted or damaged.Exhaust gas control - Exhaust gas control system 24 Oxygen sensor
Main relay

Engine mechanism - Camshaft(4) Ensure whether the timing sprocket of VVT driver
will turn toward timing advance direction in de-
creasing the pressure of timing delay oil duct.
(5) When camshaft timing sprocket turns at max.
timing advance position, release the air pressure
in timing delay side oil duct, and then release the
air in timing advance side oil duct.
Hint: camshaft timing sprocket will turn only af-
ter the lock pin is released.
(d) Check the fixing state of max. delay position.
Ensure camshaft timing sprocket assembly is fixed at
max. delay position.11. Remove VVT driver assembly.(a) Clip the camshaft with a jaw vice, and ensure VVT driver
is locked tightly.
Warning: be careful not to damage camshaft.
(b) As shown in the diagram, seal 5 oil ducts of camshaft
journal with vinyl rubber cloth.
Hint: there are 2 advance side oil ducts in the
groove of camshaft, and clog one of them
with rubber block.
(c) In opposite side of the groove, respectively prick a hole
on vinyl rubber cloth of advance side oil duct surface
and delay side oil duct surface.
(d) Send in 2 oil ducts (advance side oil duct and delay
side oil duct) with the surface rubber cloth pricked
under the pressure of 150Kpa.
Warning:cover the oil ducts with cloth to avoid
oil injecting out in pushing.
(e) Ensure whether the timing sprocket of VVT driver will
turn toward timing advance direction in decreasing the
pressure of timing delay oil duct.
Hint: camshaft timing sprocket will turn toward
advance direction only after the lock pin is
released.
(f) When camshaft timing sprocket turns at max. timing
advance position, release the air pressure in timing
delay side oil duct, and then release the air in timing
advance side oil duct. Warning: if the air pressure in timing advance side oil duct is released earlier than that
in timing delay side oil duct, VVT driver assembly will move suddenly toward
delay side, and the lock pin will be damaged.
(c) Check rotating is smooth.
Besides max. delay position, turn VVT driver assembly within rotating rang and check rotating is
smooth.
Warning: Perform inspection with hands but not with
compressed air.55Delay side
oil ductAdvance
side oil
duct
Close
OpenClose
Open
Vinyl rubber cloth
Rubber block
Delay side
oil ductAdvance
side oil
ductDropping
pressure
Maintaining
pressure Delay side
oil ductAdvance
side oil
duct
Dropping
pressure
Maintaining
pressure Delay side
oil ductAdvance
side oil
duct

Ignition - Ignition systemSpark plug
cleaneOn-vehicle inspection1. Phase sensor(a) Turn on ignition switch but do not start engine, and place digital universal meter at DC voltage gear,
then connect 2 terminals respectively to 1# pin and 3# pin of sensor, and ensure the voltage is 12V.
(b) Start engine, and phase signal is read by 2# pin via vehicle oscilloscope.2. Speed Sensor(a) Remove speed sensor joint.
(b) Place digital universal meter at ohm gear, and connect 2 terminals respectively to 2# pin and 3# pin of
sensor, and the resistance at should be 8601/2 ±801/2.
(c) Connect speed sensor joint.
(d) Place digital universal meter at AC voltage gear, and connect 2 terminals respectively to 2# pin and 3#pin of sensor, and start engine, there should be voltage output at the moment.(It is recommended to
check with vehicle oscilloscope)IgnitionIgnition systemInspection1. Spark plug(a) Clean spark plug.
Air pressure: below 588kPa.
Time: 20 s or less
(b) Check the damage condition of spark plug and insulator. If
there is something abnormal, please replace with new spark
plug.
Recommended spark plug specification:
Made in Xianghuoju Company: K6RTC
(c) Adjust electrode gap.
Electrode gap: 0.8mm77

Brake--Front brake assembly13. Check the brake branch pump and pistonCheck whether there is rust or scratch in cylinder of branch
pump and piston.14. Check the thickness of brake blockUse rule to measure the thickness of brake block.
Standard thickness: 11.00mm
Minimal thickness: 1.0mm15. Check support sheet of brake block
142Confirm the support sheet could rebound enough without any distortion, crack or abrasion, and it has
removed rust, dust and sundries completely.16. Check the thickness of brake diskUse centimeter to measure the thickness of brake disk.
Standard thickness: 25.00mm
Minimal thickness: 23.0mm17. Disassemble front brake disk(a) Make a mark on corresponding position of brake disk and shaft hub.
(b) Disassemble brake disk.18. Assemble brake diskHint: choose the position with minimal terminal run-out quantity to assemble brake disk.19. Check the terminal run-out of brake disk(a) Lock the brake disk temporarily with shaft hub nut.
Torque: 103
± ± ± ±
± 10 N
⋅ ⋅⋅ ⋅
⋅m
(b) Use centimeter to measure the terminal run-out of brake
disk on the position with 10mm apart from the exterior edge
of brake disk.
Maximal run-out quantity: 0.05mm
(c) If terminal run-out of brake disk exceeds or equals to maxi-
mal value, firstly, check the axial clearance of bearing, then
check the terminal run-out of shaft hub, if they are both
normal, adjust the terminal run-out of brake disk to eligible
value or use turning motor to turn terminal surface of brake
disk.20. Lock exhaust bolt temporarilyLock exhaust bolt temporarily on front brake branch pump.21. Assemble oil seal of piston(a) Spread lithium soap base glycol lubricating grease on new oil seal of piston.
(b) Assemble oil seal of piston on brake branch pump.
Note: do not force piston to assemble in branch pump compulsively.22. Assemble piston of front brake branch pump(a) Spread lithium soap base glycol lubricating grease on the piston.
(b) Assemble piston on brake branch pump.
Note: do not force piston to assemble in branch pump compulsively.