Symptoms
Suspected Faulty Items
Relevant Sections
Fault Definition: When Air-Conditioning
is working, the engine speed is instable
or engine stalls.
2. Electronic Throttle Body
Refer to
3.ECM
Refer to
High Fuel Consumption, Poor Fuel
Economy
Fault Definition: During the actual road
test, fuel consumption is significantly
higher than expected. In addition, the
fuel consumption is also significantly
higher than the actual road test the
same vehicle had.
1. ECM Power Supply Circuit
Refer to
2. Mixture Too Rich
3. Air filter Blocked
-
4. Poor Fuel Quality, Fuel Contamination
Refer to
5. Fuel Pressure Abnormal
6. Injector Working Abnormal
7. Electronic Throttle Body
Refer to
8. The driver has the following driving habits:
•
Air-Conditioning or Defroster Always On
•
Tire pressure is incorrect
•
Vehicle Overload
•
Accelerate Too Fast, Too Frequent
-
9. Air Leakage In Intake System and Crankcase
System
Refer to
in
10. Crankcase Ventilation Valve Catching
11. Knock Sensor (KS) System Ignition Delay
Too Great
Refer to
12. Spark Plug: Thermal value is incorrect,
damp, crack, gap incorrect, excessive erosion,
excessive carbon residue, contaminated by fuel
13. Spark Plug Wire Damage
14. Ignition Coil Damage
15. Coolant Level Too Low, Thermostat
Malfunction
Refer to
in
16. Too Much Oil In Combustion Chamber or
Valve Seals Leakage
Refer to
in
17. Cylinder Compression Pressure Incorrect
18. Valve Stagnant or Leaking, Broken Valve
Spring, Valve Timing Incorrect
19. Too Much Carbon Residue In Combustion
Chamber
Engine
Control System JL4G15-D
2-607
EC718/EC718RV EC715/EC715RV 10/2009
Summary of Contents for EC715 2009
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