Geely EC718 2009 Workshop Manual page 168

2-86 Control System JL4G18-D
Post-catalytic Oxygen Sensor Harness
Connector EN03
4
ECM Harness Connector EN01
64 63 62
61 60 59 58
50 49 48 47 46 45 44
36 35 34 33 32 31 30 29
22 21 20 19 18 17 16
Yes
Step 5 Check ECM working circuit.
Yes
Step 6 Replace ECM. Refer to
Next
Use scan tool to confirm whether the DTC code is stored again.
Step 7
EC718/EC718RV EC715/EC715RV 10/2009
3 2 1
57 56 55 54 53 52 51
8 7
6
5
43 42 41 40 39 38 37
28 27 26 25 24 23
4 3
1
2
15 14 13 12 11 10 9
FE02-5015b
2.2.8.8 Engine Control Module
(a) Turn the ignition switch to "OFF" position.
(b) Disconnect the post-catalytic oxygen sensor wiring harness
connector EN03.
(c) Disconnect ECM harness connector EN01.
(d) Measure the continuity between the post-catalytic oxygen
sensor wiring harness connector EN03 terminal No.2 and
ECM harness connector EN01 terminal No.4.
Standard Resistance: Less than 1 Ω
(e) Connect ECM harness connector EN01.
(f) Connect the post-catalytic oxygen sensor wiring harness
connector EN03.
Is resistance the specified value?
ECM control circuit malfunction
No
(a) Check whether ECM power supply circuit is normal.
(b) Check whether ECM ground circuit is normal.
Repair the faulty part.
No
Replacement.
(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 5 min.
(f) Read control system DTC code again to confirm that the
system has no DTC code.
Intermittent Fault. Refer to
No
Fault Check
Engine
2.2.7.3 Intermittent