Geely EC718, EC718RV, EC715, EC715RV. Manual part — 199
Geely EC718, EC718RV, EC715, EC715RV. Manual part - 199
2
1
Cylinder No.4 Fuel Injector
FE02-5070b
(a)
Disconnect the fuel injector wiring harness connector EO14.
(b)
Measure resistance between the two fuel injector terminals.
Standard Resistance: 11.6-12.4 Ω at 20°C(68 ºF)
(c)
Connect the fuel injector wiring harness connector EO14.
No
replace fuel injector. Refer to
.
Yes
Step 3
Measure fuel injector working power supply.
FE02-5267b
2
1
Cylinder No.4 Fuel Injector Harness
Connector EO14
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect cylinder No.4 fuel injector wiring harness
connector EO14.
(c)
Turn the ignition switch to "ON" position.
(d)
Measure voltage between cylinder No.4 fuel injector wiring
harness connector EO14 terminal No.2 and a reliable ground.
Standard Voltage: 11-14 V
(e)
Connect cylinder No.4 fuel injector wiring harness connector
EO14.
Voltage normal?
No
Yes
Step 4
Check the fuel injector control circuit.
FE02-5268b
2
1
Cylinder No.4 Fuel Injector Harness
Connector EO14
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect cylinder No.4 fuel injector wiring harness
connector EO14.
(c)
Connect a light-emitting diodes test lamp to the fuel injector
wiring harness connector EO14 terminal No.1 and 2.
(d)
Start the engine.
(e)
Observe whether test lamp is flashing.
Is the test lamp flashing?
No
Yes
Engine
Control System JL4G15-D
2-711
Step 5
Check and repair cylinder No.4 fuel injector power circuit.
1413 12 1110
5
1
2
3
4
6
7
8
9
J
L
K
I
G
D
C
B
E
F
A
86
86
30
87
85
86
86
87
87
87
30
30
30
85
85
85
2
2
3
3
5
5
1
1
1
2
5 3
1
2
5 3
86
87
30
1
1
2
5
3
2
5
3
85
EF14
EF24
EF28
EF27
EF26
EF18
EF07
EF06
EF30
EF19
EF20
EF21
EF22
EF23
EF25
EF15
EF16
EF17
EF13
EF12
EF1
1
EF10
EF09
EF08
EF05
EF04
EF03
EF02
EF01
G
1
2
5 3
2
1
Cylinder No.4 Fuel Injector Harness
Connector EO14
FE02-5269b
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect the fuel injector wiring harness connector EO14.
(c)
Remove the engine main relay.
(d)
Measure resistance between cylinder No.4 fuel injector
wiring harness connector EO14 terminal No.2 and engine
main relay terminal No.3.
(e)
Measure resistance between cylinder No.4 fuel injector
wiring harness connector EO14 terminal No.2 and a reliable
ground.
Test Items
Standard Value
Resistance Between EO14 (2) and Main
Relay Terminal No.3
Less than 1 Ω
Resistance Between EO14 (2) and A
Reliable Ground
10 kΩ or higher
(f)
Install the engine main relay.
(g)
Connect cylinder No.4 fuel injector wiring harness connector
EO14.
Exclude fuel injector power circuit malfunction.
Next
Step 6
Check cylinder No.4 fuel injector control circuit.
2
1
1
17
33
53
54
55
56
57
58
59
60
61
62
63
64
66
67
68
69
70
71
72
73
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
65
Cylinder No.4 Fuel Injector Harness
Connector EO14
ECM Harness Connector EO01
FE02-5270b
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect cylinder No.4 fuel injector wiring harness
connector EO14.
(c)
Disconnect ECM harness connector EO01.
(d)
Measure resistance between cylinder No.4 fuel injector
wiring harness connector EO14 terminal No.1 and ECM
harness connector terminal No.66. Check whether the circuit
is open. Otherwise, repair the faulty part.
(e)
Measure resistance between cylinder No.4 fuel injector
wiring harness connector EO14 terminal No.1 and a reliable
ground. Check whether the circuit is short to ground.
Otherwise, repair the faulty part.
(f)
Measure voltage between cylinder No.4 fuel injector wiring
harness connector EO14 terminal No.1 and a reliable ground.
Check whether the circuit is short to power supply. Otherwise,
repair the faulty part.
Test Items
Standard Value
Resistance Between EO14 (1) and EO01
(66)
Less than 1 Ω
2-712
Control System JL4G15-D
Engine
Resistance Between EO14 (1) and a reliable
ground
10 kΩ or higher
voltage between EO14 (1) and A Reliable
Ground
0 V
Execute next step as per normal.
Next
Step 7
Check ECM power supply circuit.
(a)
Check whether ECM power supply circuit is normal.
(b)
Check whether ECM ground circuit is normal.
No
Repair the faulty part.
Yes
Step 8
Replace ECM.
(a)
Carry out crankshaft self learn after ECM replacement. Refer
to
Crankshaft Position Sensor (CKP) Learn
Next
Step 9
Use scan tool to confirm whether the DTC code is stored again.
(a)
Connect scan tool to the datalink connector.
(b)
Turn the ignition switch to "ON" position.
(c)
Clear DTC code.
(d)
Start and run the engine at idle speed to warm up the engine
for at least 5 min.
(e)
Road test the vehicle for at least 10 min.
(f)
Read control system DTC code again to confirm that the
system has no DTC code.
No
Intermittent Fault. Refer to
Yes
Step 10
Diagnostic completed.
5. Repair Instructions:
Replace the fuel injector. Refer to
.
2.12.7.33 DTC P0300
1. DTC Descriptor:
DTC
P0300
One or More Cylinder Misfire
Engine
Control System JL4G15-D
2-713
The engine control module (ECM) uses information from the crankshaft position (CKP) sensor and the camshaft position (CMP)
sensors to determine when an engine misre is occurring. By monitoring variations in the crankshaft rotation speed for each cylinder
ECM is able to detect individual misre events. When a misfire happens, unburnt mixture will be discharged into the exhaust system
and burnt in the exhaust system. A misre rate that is high enough can cause 3-way catalytic converter damage. The malfunction
indicator lamp (MIL) will ash ON and OFF when the conditions for catalytic converter damage are present. A DTC will be set.
2. DTC Code Set Up and Removal Conditions:
DTC Code
DTC Detection Strategy
Conditions For Setting The DTC
(Control Strategy)
Fault Locations
P0300
Under stable operating
conditions, ECM detects the
crankshaft rotation speed
fluctuations.
Under stable operating conditions,
when ECM detect fluctuations in the
crankshaft rotation speed exceeds
the preset threshold value and when
a mild misfire occurs, there is no
emergency control programs.
System only records the DTC code
and data flow, and malfunction lamp
light. When there a serious misfire,
the system will be forced into the
open-loop control mode, and the
oxygen sensor learn is not allowed.
The malfunction lamp will flash at 1
Hz frequency.
1. Connector Loose or Poor
Connection
2. Vacuum Tube Hose Broken or
Loose
3. Ignition System
4. Fuel Injectors
5. Fuel Pressure
6. Intake Air Pressure Sensor
7. Engine Coolant Temperature
Sensor
8. Cylinder Compression Pressure
9. Valve Clearance and Timing
10. Evaporative Emission Control
System
11. Purged Crankcase Ventilation
System
12. Intake System
13. Poor Exhaust System
Ventilation
14. ECM
2-714
Control System JL4G15-D
Engine
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