engine coolant GEELY MK 2008 User Guide

Dismounting/mounting and disassembly and assembly (see Figure 2-1~2-5).
1. Drain the coolant.
Warning: Do not remove the radiator cover, liquid under pressure or steam (likely to eject) while the engine
and the radiator are still hot in order to avoid scalding.
(1) Remove the radiator cover.
(2) Remove the plug of the radiator, and discharge the coolant.
2. Remove the cable of the accelerator.
Release the nut and remove the cable of the accelerator.
3. Remove the air filter hood with hose.
(1) Disconnect the connector and the wire fastening device of the suction temperature sensor.
(2) Disconnect the vent duct from the air filter hose.
(3) Release the clamping collar bolt of the air filter hose.
(4) Release 2 clamps on the air filter hood.
(5) Disconnect the air filter hose from the throttle body, and remove the air filter hood together with the hose.Figure 2-6
Figure 2-7
Figure 2-8Engine MechanicalThrottle Body3-134. Remove the throttle body assembly (see Fig. 2-6).
(1) Disconnect the connector of the throttle position sensor.
(2) Disconnect the connector of ISC valve.
(3) Remove 2 bolts and 2 nuts, and remove the throttle body from
the suction manifold (see Fig. 2-7).
(4) Disconnect 2 bypass hoses, remove and check the throttle
body (see Fig. 2-8).
Check:
a. Check whether the throttle shaft shakes.
b. Check whether there is any block at each state.
c. Check whether the throttle can open and close smoothly.
d. Check whether there is a gap between the check screw and the
rod of the throttle when the throttle is at CLOSE position.
Attention:
Do not adjust the check screw of the throttle.
If the operation deviates from specifications, replace the
throttle.
(5) Remove the washer of the throttle body.
5. Dismantle throttle body idle speed control valve assembly.
Detach 4 screws, idle speed control valve and washer.
6. Detach throttle position sensor
Detach 2 screws and throttle position sensor.Coolant Bypass Pipe -

2. Check the engine coolant quantity in the compensating tank.
The coolant level should be between LOW and FULL.
3. Check the coolant quality.
(1) Remove the radiator cover.
Do not remove the radiator cover when the engine and the radiator are still hot in order to avoid scalding
since the liquid vapor may inject.
(2) Check whether there are excessive deposit and rust or sundries around the radiator cover. The coolant is
not allowed to contact with oil.
(3) Remount the radiator cover.Chapter 5 Cooling SystemSection 1 System Inspection1. Check leakage in the cooling system (see Figure 5-1).
(1) Fill coolant in the radiator, and mount the tester at the radiator
cover port.
(2) Start the engine.
(3) Keep the pump pressure at 118KPa without drop. If the
pressure drops,check whether there is any leakage at the port,
radiator and water pump; if not, check the heating core,
cylinder and cap.Figure 5-1
Figure 5-2
Figure 5-3 Figure 5-4 (4) When the thermostat is at low temperature (lower than 77°C), the valve should close completely.Cooling SystemSystem Inspection3-224. Thermostat
Notes:
The temperature indicated on the thermostat is marked as open
temperature of the valve (see Figure 5-2).
(1) Submerge the thermostat into water and heat gradually.
(2) Check the open temperature of the valve.
Open temperature of the valve: 80-84°C
(3) Check the lift of the valve (see Figure 5-3 and Figure 5-4).
Lift of the valve: 8mm or more at 95°CTester of radiator cap
8.0mm or more -

Figure 5-6
Figure 5-7Above 93°CFigure 5-5Cooling SystemSystem Inspection3-235. Fan
(1) At low temperature (lower than 83°C), check the operation of
the cooling fan.
a. The ignition switch is set to ON.
b. The cooling fan should stop.
c. Disconnect the connector of the water temperature sensor.
(see Figure 5-5)
d.Touch the ground with a wire.
e.Check if the cooling fan rotates.
f. Re-connect the connector of the water temperature sensor.
(2) At high temperature (more than 93°C), check the operation of
the fan (see Figure 5-6).
a. Start the engine, and enable the coolant temperature higher
than 93°C.
b.Check whether the cooling fan rotates.
If not, replace the water temperature switch.
(3) Check the cooling fan (see Figure 5-7).
a. Disconnect the joint of the cooling fan.
b. Connect the battery and the ammeter with the connector.
c. The cooling fan should rotate stably and check the current
readings.
Standard current: 5.7-7.7A.
d. Connect the connector of the cooling fan.disconnectBattery Amper meter -

3. Definition of multi-pin plug-in unit terminal
1. Prompt:
R- red Bl- blue Y - yellow B- black P- pink G- green W- white
O- orange Gr - gray Br- brown V- purple Lg- olive drab
The first letter indicates primary color
The second letter indicates stripe colorTerminal
number1 MIL C 10 NA
2 Engine oil pressure switch YG 1 P
3 Brake fluid GR 2 R
4 Park G 3 N
5 Right turn light GB 4 D
6NA 52
7 EBD 6 L
8 Charge WR 7
9NA 8NA
10 NA 9 Sidelight GW
11 Safety belt YR 10 Start BR
12 NA 11 B+
13 Engine GY 12IG ( + ) Y
14 Safety gasbag RY 13 GND
15 NA 14 NA
16 IG ( + ) 15Speed sensor earthing B
1 NA 16 Speed signal input YR
2 Left turn light GW 17 Speed sensor power supply RY
3 High beam (+) RB 18 Key (ODO/TRIP) G
4 High beam (-) RW 19 Key (adjust brightness) YG
5 Foglight Gr 20 Key COM B
6 Rear defrost YB 21 Fuel gauge V
7 NA 22 ABS R
8 NA 23 Tachometer BBL
9 Door-lock warning lamp RBL 24 Coolant temperature gauge YWA
BCCombination Instrument System -Wiring diagram of Combination Instrument and Location of Multi-pin Plug-in Terminal5-9Definition of terminalConductor
ColorTerminal
numberDefinition of terminalConductor
Color

5-13 c. Check voltage between terminals
Standard:Tester connectionConditions Standard condition
C 12- ground Turn ignition switch to ON position 7. 5-9V
Result and measures:
Abnormal, repair or replace wiring harness or connector
Normal, replace combination instrument assy.
3. Tachometer fails
Checkout procedure
(1) Check combination instrument assy. rotating speed input
signal
a. Remove combination instrument assy. , keep connection of
connector.
b. Connect oscillograph to terminal C23 and ground.
c. Start up engine
d. Check signal waveform
Standard:
Display correct waveform
Result and measures:
Normal, check and replace combination instrument assy.
Abnormal, check engine ECU rotating speed output signal
(2) Check engine ECU rotating speed output signal
a. Remove engine ECU ware, keep connection of connector.
b. Connect oscillograph to terminal ECU 8# pin and ground.
c. Start up engine
d. Check signal waveform
Standard:
Display correct waveform
Result and measures:
Normal, repair or replace wiring harness or connector
Abnormal, check revolution speed transducer and engine
control system
4. Water thermometer fails
Circuit diagramCombination Instrument System -Malfunction Symptom Table and Troubleshooting combination instrument assy
combination instrument assy engine ECU
coolant Temperature SensorEngine Speed Signal
coolant Temperature Signal

Air Conditioning System -General Information5-74Symptom
No air temperature control
Compressor does not work
Insufficient refrigeration
No engine idle speed when air conditioning
switch is ON (switch on)
No air input control
No mode control
Condenser fan does not workSuspected Area
1. Engine coolant quantity
2. Air conditioning control mechanism assembly.
1. Refrigerant quantity
2. Compressor fuse
3. Centralized controller fuse
4. Magnetic clutch relay
5. Pressure switch
6. Magnetic clutch assembly
7. Air conditioning compressor assembly
8. Integrated control panel assembly (air conditioner switch)
9. Air conditioner thermistor
10. Engine ECU
11. Wiring harness
1. Refrigerant quantity
2. Refrigerant pressure
3. Driving belt
4. Air conditioner thermistor
5. Integrated control panel assembly (air conditioner switch)
6. Magnetic clutch assembly
7. Air conditioning compressor assembly
8. Condenser
9. Accumulator-drier
10. Expansion valve
11. Evaporator
12. Refrigerant line
13. Pressure switch
14. Air conditioner control mechanism assembly
15. Wiring harness
1. Idle speed control system
2. Wiring harness
3. ECM
1.Air conditioner control mechanism assembly
1.Air conditioner control mechanism assembly
1. MAIN fuse
2. Condenser fan fuse
3. Condenser fan relay
4. Condenser fan motor
5. Wiring harness

Overhaul1. Drain coolant (refer to Coolant for details).
2. Remove condenser fan motor assembly
(1) Disconnect condenser fan motor wire harness connector.
(2) Unscrew 1 bolt, remove condenser fan motor assembly.
3. Disconnect the liquid tube
(1) Remove the bolt, disconnect the liquid tube from the condenser.
(2) Remove the Oring from the liquid tube.
4. Disconnect the high and low pressure pipe assembly
(1) Remove the bolt, disconnect the high and low pressure tube
assembly from the condenser.
(2) Remove the Oring from the high and low pressure tube
assembly.
Notice: Use vinyl tape seal all the interfaces of the disconnected
parts to avoid entry of water and foreign objects.
5. Remove engine hood lock assembly
(1) remove the bolt, remove engine hood lock assemblyAir Conditioning System -Condenser Fan Motor and Condenser Assembly5-97

Fault symptom Possible cause
Poor speedup etc Man made fault1 2 3Throttle position sensorFault symptom Possible cause
Difficult to start Man made fault Repair precautions: pay attention to mounting position.
(2) Simple measuring method:
(Remove joint) turn digital multimeter to ohm position, connect
two meter pens with sensor 1 #, 2 # pin respectively, its resistance
value at room temperature is 2k ohm±20 %. Connect two meter pens
with 1 #, 3# pin respectively, rotate throttle, its resistance value shows
linear change with opening of throttle, while situation is reverse for
2 #, 3# pin.
Note: when observe change of resistance value, pay attention to observe whether has large leap.
3. Coolant temperature sensor
(1) This sensor is a negative temperature coefficient (NTC) thermistor, its resistance value decreases with
increase of temperature, but not a linear relationship. This thermistor is installed in a copper heat conducting sleeve.Engine EFI System-Engine EFI System5-121should drop.
Pressure sensor part: (connect joint), turn digital multimeter to DC voltage position, black meter pen is earthed,
red meter pen is connected with 3#, 4# pin respectively. In condition of idle speed, 3# pin should have reference
voltage of 5 V, 4 # pin voltage should be about 1. 3 V (specific value is related with vehicle type); in no-load
condition, open the throttle slowly, change of voltage of 4 # pin is not large; open the throttle quickly, voltage of
4 # pin may reach about 4V in no time (specific value is related with vehicle type), then it drops down to about
1. 5 V.
2. Throttle position sensor
(1) This sensor is actually corner potentiometer with linear output characteristic. Potentiometer tumbler is
mounted coaxially with throttle, when throttle rotates, it drives potentiometer tumbler to slide to certain position,
potentiometer outputs voltage signal proportional to throttle position. Mounting torque: 20 N.m(Max)
(2) Simple measuring method:
(Remove joint) turn digital multimeter to ohm position, connect two meter pens with sensor pins respectively,rated resistance at 20°C is 2.5 k ohm± 5%. Simulation method may also be used for measurement, specificprocedure is to put sensor work area into boiled water (pay attention to soak for sufficient time), observe changeof sensor resistance, now resistance should drop down to 300 ohm-400 ohm (specific value subjects to temperatureof boiled water).
Resistance value (K ohm)
No.Temperature
(°C) Temperature tolerance ±1°C Temperature tolerance ±0°C
Min. Max. Min. Max.
1 8.16 10.74 8.62 10.28 -10
2 2.27 2.73 2.37 2063 +20
3 0.290 0.354 0.299 0.345 +80

No
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
255-128 4. Eliminate fault code either by diagnosis instrument or manually. Manual operation method, specific
procedure: use engine data K-line (namely 9 # terminal of diagnostic interface) earth twice, earthing time is more
than 2. 5 s at each time.
Fault code tableFaulty part
No fault
Electronic control unit (unit) fault
Knocking control zero test
Knocking sensor
Storage battery voltage
Intake pressure sensor
Throttle position sensor
Idle speed control valve
Coolant temperature sensor
Intake temperature sensor
Engine maximum speed overrun
Fuel injector 1
Fuel injector 2
Fuel injector 3
Fuel injector 4
Fan relay
Oxygen sensor
Air fuel ratio control correction coefficient
? self-learning value 1
? self-learning value 2
? self-learning value 3
Fault caution light
Canister control valve
Air conditioner condenser temperature sensor
Phase sensorFault code
11
34
1
15
38
16
14
61
19
18
33
22
23
24
21
42
17
31
35
36
37
45
25
13
43Fault lamp
OFF
ON
OFF
ON
OFF
ON
ON
ON
ON
ON
OFF
ON
ON
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
ON
OFF
ONFault type
-
2
-
2
2
1
1
1
1
1
2
1
1
1
1
1
1
2
2
2
2
1
1
1
1
Fault type: 1-open circuit 2-signal overrun
No. 18 to 21 in the table refers to air fuel ratio correction coefficient,?=actual air quantity/air need for
combustion, "? self-learning value" is also called learning air fuel ratio control value.Engine EFI System-
Engine EFI System