Geely EC718 2009 Workshop Manual page 845

Engine
Yes
Check ECM power supply circuit and ground circuit.
Step 4
Yes
Step 5 Replace ECM. Refer to
Next
Carry out crankshaft position sensor learn. Refer to
Step 6
Next
Use scan tool to confirm whether the DTC code is stored again.
Step 7
Yes
Diagnostic completed.
Step 8
2.12.7.47 DTC P0646 P0647
1. DTC Descriptor:
DTC P0646
DTC P0647
2.2.8.8 Engine Control Module
Air-Conditioning Clutch Relay Circuit Short To Low Voltage or Open
Air-Conditioning Clutch Relay Circuit Short To High Voltage
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
2.12.7.3 Intermittent Fault Check
(a) Check ECM power supply circuit and ground circuit. Refer
to "2.12.7.43 DTC P0562
ECM power and ground circuits normal?
Power and ground circuits fault.
No
Replacement.
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.
Verify that the system has no DTC code output.
Intermittent Fault. Refer to
No
2.12.7.3 Intermittent Fault Check
EC718/EC718RV EC715/EC715RV 10/2009
P0563.
Learn.
2-763