Geely EC718 2009 Workshop Manual page 275

Engine
P0629
3. Schematic:
12
05
From Battery
4. Diagnostic Steps:
Check fuel pump relay circuit. Refer to
2.2.7.40 DTC P0645-P0647
1. DTC Descriptor:
DTC P0645
DTC P0646
DTC P0647
The Air-Conditioning compressor relay working voltage is provided by the main relay controlled by ECM. ECM controls air-
conditioning compressor relay internal ground by ECM harness connector EN01 terminal No.60, so relay pulls in. ECM has a driver
circuit that controls relay coil ground. The driver circuit is equipped with a feedback circuit to ECM. ECM monitors the feedback
voltage control circuit to determine whether the there is an open circuit or a circuit short to ground or power supply.
Circuit Short to Power Supply.
Main Relay
2.3.7.3 Fuel Pump Inoperative.
A/C Compressor Relay Control Circuit Open
A/C Compressor Relay Control Circuit Short to Ground
A/C Compressor Relay Control Circuit Short to Power Supply
Control System JL4G18-D
Fuel Pump Relay
Fuel Pump
EC718/EC718RV EC715/EC715RV 10/2009
2-193
Engine
Control
Module
FE02-5108b