Geely EC718, EC718RV, EC715, EC715RV. Manual part — 195
Geely EC718, EC718RV, EC715, EC715RV. Manual part - 195
2. Conditions For Setting DTC and The Fault Location:
DTC Code
DTC Detection Strategy
Conditions For Setting The DTC (Control
Strategy)
Fault Locations
P0230
Hardware Circuit Checks
The ignition switch is turned on, turning on
time longer than the system preset
threshold. the fuel pump relay voltage is
too high or too low.
1. Relay Circuit
2. Relay
3. ECM
3. Schematic
05
12
EO35
EO35
EO35
EO35
EO35
2
4
3
1
M
71
FPR
62
MPR
VBATPROT
VBATPROT
22
6
VBAT
1
EF04
Main Relay
From Battery
Fuel Pump Unit
To
Instrument
Cluster
Engine
Control
Module
Fuel Pump Relay
FE02-5250b
4. Diagnostic Steps:
For fuel pump relay diagnostic. Refer to
2.12.7.29 DTC P0261 P0262
1. DTC Descriptor:
DTC
P0261
Cylinder No.1 Fuel Injector Circuit Low Voltage Fault
DTC
P0262
Cylinder No.1 Fuel Injector Circuit High Voltage Fault
Engine
Control System JL4G15-D
2-695
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.1 fuel injector internal ground
circuit through ECM harness connector EO01 terminal No.65. 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
P0261
Hardware Circuit Checks
Injector Signal Circuit Open or Short
To Ground
1. Sensor Circuit
2. Sensor
3. ECM
P0262
Hardware Circuit Checks
Injector Signal Circuit Short To Power
Supply
1. Sensor Circuit
2. Sensor
3. ECM
3. Schematic:
FE02-5251b
MAIN
EF12
5
2
3
1
1
2
MPR
EO01
65
INJA
EO35
62
Main Relay
From Battery
Engine
Control
Module
Cylinder No.1 Fuel Injector
2-696
Control System JL4G15-D
Engine
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.1 Fuel Injector
FE02-5052b
(a)
Disconnect the fuel injector wiring harness connector EO11.
(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 EO11.
No
Replace fuel injector. Refer to
.
Yes
Step 3
Measure fuel injector working power supply.
FE02-5252b
2
1
Cylinder No.1 Fuel Injector Harness
Connector EO11
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect cylinder No.1 fuel injector wiring harness
connector EO11.
(c)
Turn the ignition switch to "ON" position.
(d)
Measure voltage between cylinder No.1 fuel injector wiring
harness connector EO11 terminal No.2 and a reliable ground.
Standard Voltage: 11-14 V
(e)
Connect cylinder No.1 fuel injector wiring harness connector
EO11.
Voltage normal?
No
Yes
Step 4
Check the fuel injector control circuit.
Engine
Control System JL4G15-D
2-697
FE02-5253b
2
1
Cylinder No.1 Fuel Injector Harness
Connector EO11
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect cylinder No.1 fuel injector wiring harness
connector EO11.
(c)
Connect a light-emitting diodes test lamp to the fuel injector
wiring harness connector EO11 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.1 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.1 Fuel Injector Harness
Connector EO11
FE02-5254b
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect the fuel injector wiring harness connector EO11.
(c)
Remove the engine main relay.
(d)
Measure resistance between cylinder No.1 fuel injector
wiring harness connector EO11 terminal No.2 and engine
main relay terminal No.3.
(e)
Measure resistance between cylinder No.1 fuel injector
wiring harness connector EO11 terminal No.2 and a reliable
ground.
Test Items
Standard Value
Resistance Between EO11 (2) and Main Relay
Terminal No.3
Less than 1 Ω
Resistance Between EO11 (2) and a reliable
ground
10 kΩ or higher
(f)
Install the engine main relay.
(g)
Connect cylinder No.1 fuel injector wiring harness connector
EO11.
Exclude fuel injector power circuit malfunction.
Next
Step 6
Check cylinder No.1 fuel injector control circuit.
2-698
Control System JL4G15-D
Engine
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