Geely EC718 2009 Workshop Manual page 791

Engine
Yes
Diagnostic completed.
Step 10
5. Repair Instructions:
Replace the fuel injector. Refer to
2.12.7.32 DTC P0270 P0271
1. DTC Descriptor:
DTC P0270
DTC P0271
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
P0270 Hardware Circuit Checks
P0271 Hardware Circuit Checks
2.2.8.2 Fuel Injector Replacement.
Cylinder No.4 Fuel Injector Circuit Low Voltage Fault
Cylinder No.4 Fuel Injector Circuit High Voltage Fault
Conditions For Setting The DTC
Injector Signal Circuit Open or Short
Injector Signal Circuit Short To Power
Control System JL4G15-D
(f) Read control system DTC code again to confirm that the
system has no DTC code.
Intermittent Fault. Refer to
No
Fault
(Control Strategy)
To Ground
Supply
EC718/EC718RV EC715/EC715RV 10/2009
2.2.7.3 Intermittent
Check.
Fault Locations
1. Sensor Circuit
2. Sensor
3. ECM
1. Sensor Circuit
2. Sensor
3. ECM
2-709