Geely EC718, EC718RV, EC715, EC715RV. Manual part — 197
Geely EC718, EC718RV, EC715, EC715RV. Manual part - 197
Step 5
Check and repair cylinder No.2 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.2 Fuel Injector Harness
Connector EO12
FE02-5259b
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect the fuel injector wiring harness connector EO12.
(c)
Remove the engine main relay.
(d)
Measure resistance between cylinder No.1 fuel injector
wiring harness connector EO12 terminal No.2 and engine
main relay terminal No.3.
(e)
Measure resistance between cylinder No.1 fuel injector
wiring harness connector EO12 terminal No.2 and a reliable
ground.
Test Items
Standard Value
Resistance Between EO12 (2) and Main
Relay Terminal No.3
Less than 1 Ω
Resistance Between EO12 (2) and A Reliable
Ground
10 kΩ or higher
(f)
Install the engine main relay.
(g)
Connect cylinder No.2 fuel injector wiring harness connector
EO12.
Exclude fuel injector power circuit malfunction.
Next
Step 6
Check cylinder No.2 fuel injector control circuit.
FE02-5260b
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.2 Fuel Injector Harness
Connector EO12
ECM Harness Connector EO01
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect cylinder No.2 fuel injector wiring harness
connector EO12.
(c)
Disconnect ECM harness connector EO01.
(d)
Measure resistance between cylinder No.2 fuel injector
wiring harness connector EO12 terminal No.1 and ECM
harness connector terminal No.63. Check whether the circuit
is open. Otherwise, repair the faulty part.
(e)
Measure resistance between cylinder No.2 fuel injector
wiring harness connector EO12 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.2 fuel injector wiring
harness connector EO12 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 EO12 (1) and EO01 (63)
Less than 1 Ω
Engine
Control System JL4G15-D
2-703
Resistance Between EO12 (1) and A Reliable
Ground
10 kΩ or higher
Voltage Between EO12 (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
.
2.12.7.31 DTC P0267 P0268
1. DTC Descriptor:
DTC
P0267
Cylinder No.3 Fuel Injector Circuit Low Voltage Fault
DTC
P0268
Cylinder No.3 Fuel Injector Circuit High Voltage Fault
2-704
Control System JL4G15-D
Engine
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.3 fuel injector internal ground
circuit through ECM harness connector EO01 terminal No.64. 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
P0267
Hardware Circuit Checks
Injector Signal Circuit Open or Short
To Ground
1. Sensor Circuit
2. Sensor
3. ECM
P0268
Hardware Circuit Checks
Injector Signal Circuit Short To Power
Supply
1. Sensor Circuit
2. Sensor
3. ECM
3. Schematic
MAIN
EF12
5
2
3
1
1
2
MPR
EO01 INJB
EO35
62
64
Main Relay
From Battery
Engine
Control
Module
Cylinder No.3 Fuel Injector
FE02-5261b
Engine
Control System JL4G15-D
2-705
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
1
Cylinder No.3 Fuel Injector
FE02-5064b
(a)
Disconnect the fuel injector wiring harness connector EO13.
(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 EO13.
No
Replace fuel injector. Refer to
.
Yes
Step 3
Measure fuel injector working power supply.
FE02-5262b
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)
Turn the ignition switch to "ON" position.
(d)
Measure voltage between cylinder No.3 fuel injector wiring
harness connector EO13 terminal No.2 and a reliable ground.
Standard Voltage: 11-14 V
(e)
Connect cylinder No.3 fuel injector wiring harness connector
EO13.
Voltage normal?
No
Yes
Step 4
Check the fuel injector control circuit.
2-706
Control System JL4G15-D
Engine
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