Geely EC718, EC718RV, EC715, EC715RV. Manual part — 173
Geely EC718, EC718RV, EC715, EC715RV. Manual part - 173
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
Symptoms
Suspected Faulty Items
Relevant Sections
20. Vacuum Hose Cracking or Kink, The
Connection Is Unreliable
21. Exhaust Blocked: Three-Way Catalytic
Converter Blocked, Muffler Internal Damage
Refer to
22. Braking System Dragging or Operation
Abnormal
Refer
23. Electromagnetic interference (EMI) on
voltage circuit may lead to misfire. Use a scan
tool to monitor the engine speed to detect
electromagnetic interference. Engine speed
parameter suddenly increase while the actual
engine speed is almost not changed, then there
is electromagnetic interference. If there is a
malfunction, check whether there is a high
voltage component in the vicinity of the ignition
control circuit.
-
Fuel Supply Stopped, Misfire
Fault Definition: Continuous pulsation
or jitter as the engine speed increases,
usually with the engine load increases it
is even more noticeable. When the
engine speed is above 1500 rpm, the
malfunction does not occur.
1. ECM Power Supply Circuit
Refer to
2. Air Filter Blocked
-
3. Fuel Pressure Abnormal
Refer to
4. Injector Working Abnormal
5. Mixture Too Rich
Refer to
6. Mixture Too Lean
7. Electronic Throttle Body
Refer to
8. Knock Sensor (KS) system ignition delay is
too great
Refer to
9. Spark Plug: Thermal value is incorrect, damp,
crack, gap incorrect, excessive erosion,
excessive carbon residue, contaminated by fuel
10. Spark Plug Wire Damage
11. Ignition Coil Damage
12. Crankshaft Position Sensor
Refer to
13. Too Much Oil In Combustion Chamber or
Valve Oil Seals Leakage
Refer to
in
14. Cylinder compression pressure is incorrect
15. Valve Stagnant or Leakage
2-608
Control System JL4G15-D
Engine
Symptoms
Suspected Faulty Items
Relevant Sections
16. Camshaft Convex Corner Wear
17. Valve Timing Incorrect
18. Valve Spring Broken
19. Too Much Carbon Residue In Combustion
Chamber
20. Camshaft, Cylinder Head, Piston,
Connecting Rod and Bearing Abnormal
21. Exhaust Blocked: Three-Way Catalytic
Converter Blocked, Muffler Internal Damage
Refer to
Poor idle, Idle Speed Unstable,
Inaccurate or Engine Stall
Fault Definition: When idling, the engine
running is not smooth. In extreme
cases, the engine or the vehicle will
tremble. With a certain throttle opening,
the engine idle speed may fluctuate.
Any of these circumstances is likely to
be serious enough to make the engine
stall.
1. ECM Power Supply Circuit
Refer to
2. Air Cleaner Filter Blocked
-
3. Fuel Pressure Abnormal
Refer to
4. Fuel Contamination
5. Injector Working Abnormal
6. Electronic Throttle Body
Refer to
7. Acceleration Pedal Position Sensor
Refer to
8. Crankcase Ventilation Valve
Refer to
in
9. Evaporative emission (EVAP) Canister
Solenoid Valve
Poor Idle, Idle Speed Unstable,
Inaccurate or Stall
Fault Definition: When idling, the engine
running is not smooth. In extreme
cases, the engine or the vehicle will
tremble. With a certain throttle opening,
the engine idle speed may fluctuate.
Any of these circumstances is likely to
be serious enough to make the engine
stall.
10. Knock Sensor (KS) system ignition delay is
too great
11. Spark Plug: Thermal value is incorrect,
damp, crack, gap incorrect, excessive erosion,
excessive carbon residue, contaminated by fuel.
Refer to
12. Spark Plug Wire Damage
13. Ignition Coil Damage
14. Crankshaft Position Sensor
Refer to
15. Too Much Oil In Combustion Chamber or
Valve Seals Leakage
Refer to
in
16. Cylinder Compression Pressure Incorrect
17. Valve Catching or Leak, Broken Valve
Spring, Valve Timing Incorrect
18. Too Much Carbon Residue In Combustion
Chamber
19. Check Engine Bearings
Engine
Control System JL4G15-D
2-609
Symptoms
Suspected Faulty Items
Relevant Sections
20. Electromagnetic interference (EMI) on
voltage circuit may lead to misfire. Use a scan
tool to monitor the engine speed to detect
electromagnetic interference. Engine speed
parameter suddenly increase while the actual
engine speed is almost not changed, then there
is electromagnetic interference. If there is a
malfunction, check whether there is a high
voltage component in the vicinity of the ignition
control circuit.
-
Detonation, Ignition Knock
Fault Definition: Knocking sound is
worsen during accelerating. With the
throttle opening changes, the engine
will generate a sharp metal knocking
sound.
1. ECM Power Supply Circuit
Refer to
2. Incorrect Fuel
Refer to
3. Fuel Pressure Abnormal
4. Injector Working Abnormal
5. Mixture Too Lean
Refer to
6. Knock Sensor (KS) System Ignition Delay Too
Great
Refer to
7. Spark Plug Heat Value Incorrect
8. Cooling system: Coolant level is too low,
coolant is incorrect, coolant leaks, cooling fan is
not running
Refer to
in
9. Too Much Oil In Combustion Chamber and
The Valve Seal Leaking
Refer to
in
10. Cylinder Compression Pressure Too High
11. Too Much Carbon Residue In Combustion
Chamber
12. Camshaft, Cylinder Head, Piston,
Connecting Rod and Bearing Abnormal
Difficulty In Starting The Engine
Fault Definition: The engine crankshaft
rotation is normal, but the vehicle can
not start for a long time. Eventually the
vehicle will be able to start, but it the
engine may shut down immediately.
1. Too Much Oil In Combustion Chamber and
The Valve Seal Leaking
Refer to
in
2. Too Carbon Residue In Combustion Chamber
3. Timing Chain Installation Incorrect
4. Cylinder Compression Pressure Incorrect
5. Fuel Pump Relay, Fuel Pump, Fuel Injector,
Fuel Contamination
Refer to
2-610
Control System JL4G15-D
Engine
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