Geely EC718 2009 Workshop Manual page 183

Engine
Engine Coolant Temperature Sensor
Harness Connector EN23
A
ECM Harness Connector EN01
64 63 62
61 60 59 58 57
50 49 48 47 46 45 44 43
36 35 34 33 32 31 30 29
22 21 20 19 18 17 16 15
Next
Step 7 Check ECM power supply circuit.
Yes
Step 8 Replace ECM.
Next
Use scan tool to confirm whether the DTC code is stored again.
Step 9
C
B
56 55 54 53 52 51
8 7
6
5
42 41 40 39 38 37
28 27 26 25 24 23
3
4
1
2
14 13 12 11 10 9
FE02-5034b
Control System JL4G18-D
(a) Turn the ignition switch to "OFF" position.
(b) Disconnect the engine coolant temperature sensor wiring
harness connector EN23.
(c) Disconnect ECM harness connector EN01.
(d) Measure resistance between engine coolant temperature
sensor wiring harness connector EN23 terminal C and ECM
harness connector terminal No.40. Check whether the circuit
is open. If there is no open circuit, repair the faulty part.
(e) Measure voltage between engine coolant temperature
sensor wiring harness connector EN23 terminal C and a
reliable ground. Check whether there is a short circuit. If there
is no short circuit, repair the faulty part.
Test Items
Resistance Between EN23 (C) and EN01
(40)
Voltage Between EN23 (C) 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) 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) 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
2-101
Standard Value
Less than 1 Ω
0 V
2.2.7.3 Intermittent