Geely EC718 2009 Workshop Manual page 765

Engine
Yes
Step 7 Inspect the exhaust system seal.
Step 8 measure oxygen sensor signal circuit.
Post-catalytic Oxygen Sensor Harness
Connector EO03
A
Yes
Measure Post-Catalytic oxygen sensor ground circuit.
Step 9
Post-catalytic Oxygen Sensor Harness
Connector EO03
A
Yes
replace the oxygen sensor.
Step 10
B C D
FE02-5354b
B C D
FE02-5355b
Control System JL4G15-D
Refer to
No
(a) Check whether the three-way catalytic converter looks good
(signs of excessive heat and gasket missing, etc.).
(b) Check whether the exhaust pipe is intact, whether the gasket
is intact.
replace the damaged parts. Go to step 15
No
(a) Turn the ignition switch to "OFF" position.
(b) Disconnect the oxygen sensor wiring harness connector
EO03.
(c) Turn the ignition switch to "ON" position.
(d) Measure voltage between oxygen sensor wiring harness
connector EO03 terminal B and a reliable ground.
Standard Voltage Value: 0.35-0.5 V
(e) Connect the oxygen sensor wiring harness connector EO03.
Is the voltage specified value?
Go to step 11
No
(a) Turn the ignition switch to "OFF" position.
(b) Disconnect the oxygen sensor wiring harness connector
EO03.
(c) Turn the ignition switch to "ON" position.
(d) Measure resistance between oxygen sensor EO03 terminal
A and a reliable ground.
Standard Resistance: Less than 1 Ω
(e) Connect the oxygen sensor wiring harness connector EO03.
Is the resistance specified value?
Go to step 12
No
EC718/EC718RV EC715/EC715RV 10/2009
2.12.7.14 DTC Code Index
2-683