Geely EC718 2009 Workshop Manual page 822

2-740 Control System JL4G15-D
Next
Select on the scan tool: Engine/Read data/Group 1 oxygen sensor voltage 1 (Pre-Catalytic oxygen sensor),
Step 4
Group 1 oxygen sensor voltage 2 (Post-Catalytic oxygen sensor)
Next
1V
Pre-catalytic
Oxygen Sensor
0V
1V
Post-catalytic
Oxygen Sensor
0V
Step 5 Observe Pre-Catalytic oxygen sensor and Post-Catalytic oxygen sensor output voltages.
No
Warning!
Propane gas as is a flammable gas. It is strictly prohibited to operate propane gas near a fire, otherwise it will cause a
fire.
Step 6 Test the oxygen sensor signal.
EC718/EC718RV EC715/EC715RV 10/2009
Normal TWC Deteriorated TWC
1V
0V
1V
0V
Whether Pre-Catalytic oxygen sensor and Post-Catalytic oxygen
sensor signal voltage is matching "Normal TWC" in the graphic?
Intermittent Fault. Refer to
Yes
Fault
(a) If the voltage data is consistently below 0.45 V (mixture too
lean), carry out the steps as following:
• Spray proper amount of propane gas into the intake.
FE02-5092b
2.2.7.3 Intermittent
Check.
Engine