Geely EC715 2009, Workshop Manual

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"Air-Conditioning System" in the 8.2.7 Diagnostic Information
and Procedures .
No
Repair the faulty part.
Yes
Step 12 Check whether the exhaust system is normal?
(a) Inspect the exhaust system for blocking. Refer to the "Engine
Exhaust System" in the
2.7.5.3 Exhaust System Blockage .
No
Repair the faulty part.
Yes
Go to step 15
Step 13
Check the cause for the mixture too rich.
(a) Check whether the canister solenoid valve is normally turned
on.
(b) Check whether there is fuel injectors leakage.
(c) Check whether the air filter is blocked.
(d) Check whether there is intake manifold clogging or
deformation.
(e) Check whether the engine oil is contaminated by fuel.
(f) Check whether the fuel pressure is too high.
(g) Check whether the intake manifold absolute pressure sensor
is normal.
(h) Check whether the engine coolant temperature sensor is
normal.
The existence of the above faults?
No
Go to step 15
Yes
Repair the faulty part.
Step 14 Check the cause for the mixture too lean.
(a) Check whether there is a vacuum leak.
(b) Check the existence of broken tubes.
(c) Check whether the fuel injectors is blocked.
(d) Check whether intake manifold absolute pressure sensor is
abnormal.
(e) Check whether the engine coolant temperature sensor is
abnormal.
(f) Check whether the fuel is contaminated.
The existence of the above faults?
Yes
Repair the faulty part.
No
Step 15
Road test the vehicle to confirm that the fault has been ruled out.
2-246 Fuel System JL4G18-D Engine
EC718/EC718RV EC715/EC715RV 10/2009