Geely EC718 2009 Workshop Manual page 795

Engine
Next
Step 7 Check ECM power supply circuit.
Yes
Step 8 Replace ECM.
Next
Step 9 Use scan tool to confirm whether the DTC code is stored again.
Yes
Diagnostic completed.
Step 10
5. Repair Instructions:
Replace the fuel injector. Refer to
2.12.7.33 DTC P0300
1. DTC Descriptor:
DTC P0300
2.2.8.2 Fuel Injector Replacement.
One or More Cylinder Misfire
Control System JL4G15-D
Resistance Between EO14 (1) and a reliable
ground
voltage between EO14 (1) and A Reliable
Ground
Execute next step as per normal.
(a) Check whether ECM power supply circuit is normal.
(b) Check whether ECM ground circuit is normal.
Repair the faulty part.
No
(a) Carry out crankshaft self learn after ECM replacement. Refer
to 2.12.7.11 Crankshaft Position Sensor (CKP)
(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.
Intermittent Fault. Refer to
No
Fault Check.
EC718/EC718RV EC715/EC715RV 10/2009
2-713
10 kΩ or higher
0 V
Learn.
2.2.7.3 Intermittent