Geely EC718, EC718RV, EC715, EC715RV. Manual part — 198
Geely EC718, EC718RV, EC715, EC715RV. Manual part - 198
FE02-5263b
2
1
Cylinder No.3 Fuel Injector Harness
Connector EO13
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect cylinder No.3 fuel injector wiring harness
connector EO13.
(c)
Connect a light-emitting diodes test lamp to the fuel injector
wiring harness connector EO13 terminal No.1 and 2.
(d)
Start the engine.
(e)
Observe whether test lamp is flashing.
Is the test lamp flashing?
No
Yes
Step 5
Check and repair cylinder No.3 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.3 Fuel Injector Harness
Connector EO13
FE02-5264b
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect the fuel injector wiring harness connector EO13.
(c)
Remove the engine main relay.
(d)
Measure resistance between cylinder No.3 fuel injector
wiring harness connector EO13 terminal No.2 and engine
main relay terminal No.3.
(e)
Measure resistance between cylinder No.3 fuel injector
wiring harness connector EO13 terminal No.2 and a reliable
ground.
Test Items
Standard Value
Resistance Between EO13 (2) and Main
Relay Terminal No.3
Less than 1 Ω
Resistance Between EO13 (2) and A
Reliable Ground
10 kΩ or higher
(f)
Install the engine main relay.
(g)
Connect cylinder No.3 fuel injector wiring harness connector
EO13.
Exclude fuel injector power circuit malfunction.
Next
Step 6
Check cylinder No.3 fuel injector control circuit.
Engine
Control System JL4G15-D
2-707
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.3 Fuel Injector Harness
Connector EO13
ECM Harness Connector EO01
FE02-5265b
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect cylinder No.3 fuel injector wiring harness
connector EO13.
(c)
Disconnect ECM harness connector EO01.
(d)
Measure resistance between cylinder No.3 fuel injector
wiring harness connector EO13 terminal No.1 and ECM
harness connector terminal No.64. Check whether the circuit
is open. Otherwise, repair the faulty part.
(e)
Measure resistance between cylinder No.3 fuel injector
wiring harness connector EO13 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.3 fuel injector wiring
harness connector EO13 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 EO13 (1) and EO01 (64)
Less than 1 Ω
Resistance Between EO13 (1) and A Reliable
Ground
10 kΩ or higher
Voltage Between EO13 (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.
2-708
Control System JL4G15-D
Engine
(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
.
2.12.7.32 DTC P0270 P0271
1. DTC Descriptor:
DTC
P0270
Cylinder No.4 Fuel Injector Circuit Low Voltage Fault
DTC
P0271
Cylinder No.4 Fuel Injector Circuit High Voltage Fault
Fuel injectors operating voltage is provided by The Main Relay controlled by ECM. battery voltage passes through the main relay
terminal No.3 to all fuel injector wiring harness connectors terminal No.1. ECM controls Cylinder No.4 fuel injector internal ground
circuit through ECM harness connector EO01 terminal No.66. ECM monitors all fuel injector driver circuits status, if ECM detects
driving circuit status corresponding voltage is incorrect, ECM will set a fuel injector control circuit fault DTC code.
2. Conditions For Setting DTC and The Fault Location:
DTC Code
DTC Detection Strategy
Conditions For Setting The DTC
(Control Strategy)
Fault Locations
P0270
Hardware Circuit Checks
Injector Signal Circuit Open or Short
To Ground
1. Sensor Circuit
2. Sensor
3. ECM
P0271
Hardware Circuit Checks
Injector Signal Circuit Short To Power
Supply
1. Sensor Circuit
2. Sensor
3. ECM
Engine
Control System JL4G15-D
2-709
3. Schematic:
MAIN
EF12
5
2
3
1
1
2
MPR
EO01 INJC
EO35
62
66
Main Relay
From Battery
Engine
Control
Module
Cylinder No.4 Fuel Injector
FE02-5266b
4. Diagnostic Steps:
Note
Before carrying out this diagnosis step, observe the data list on scan tool and analyze the accuracy of the data, as
these will help with quick diagnosis.
Step 1
Initial Inspection
(a)
Check for fuel injector wiring harness connector damage,
poor connection, aging and signs of loosening.
Next
Step 2
Measure the fuel injector resistance.
2-710
Control System JL4G15-D
Engine
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