Geely EC718, EC718RV, EC715, EC715RV. Manual part — 32
Geely EC718, EC718RV, EC715, EC715RV. Manual part - 32
Symptoms
Suspected Fault Items
Relevant Sections
12. Crankshaft Position Sensor
13. Excessive Engine Oil in Combustion
Chamber or Valve Seals Leakage
"Engine Mechanical System" in the
14. Cylinder Compression Pressure
Incorrect
15. Valve Stagnant, Valve Spring
Broken, Valve Timing Incorrect
16. Excessive Carbon Residue in
Combustion Chamber
17. Intelligent Variable Valve Timing
System
18. Exhaust Not Smooth: Three-way
Catalytic Converter Plug, Muffler Internal
Damage
"Engine Exhaust System" in the
Pinging, Knocking
Fault Definition: The knocking
sound increases during
acceleration. With the throttle
opening changes, the engine
will produce a sharp metal
knocking sound.
1. ECM Power Supply Circuit
2. Wrong Fuel Used
"Fuel System" in the
.
3. Fuel Pressure Abnormal
4. Injector Working Abnormal
5. The Air-Fuel Mixture Too Lean
6. Knock Sensor (KS) System Ignition
Advance Too Great
"Ignition System" in the
.
7. Spark Plug Thermal Value Incorrect
8. Engine Cooling System: Engine
coolant level is too low. The engine
coolant is not the correct type. The
engine coolant leaks. The cooling fan is
not running.
"Engine Cooling System" in the
9. Excessive Engine Oil in Combustion
Chamber and Valve Seal Leakage
"Engine Mechanical System" in the
10. Cylinder Compression Pressure Too
High
11. Excessive Carbon Residue in
Combustion Chamber
12. Camshaft, Cylinder Head, Piston,
Connecting Rod and Bearing Abnormal
Engine
Control System JL4G18-D
2-43
Symptoms
Suspected Fault Items
Relevant Sections
Retardation, Engine Speed
Decrease, Engine Speed
Instable
Fault Definition: When
pressing the accelerator pedal,
there is no immediate
response. This fault may occur
at any vehicle speed. The
vehicles first starts (for
example, after stopping off
hours), this fault is usually
more pronounced. In severe
cases, this fault may lead to
engine stall.
1. ECM Power Supply Circuit
2. Intake Manifold Absolute Pressure
(MAP) Sensor
3. Fuel Pressure Abnormal
"Fuel System" in the
.
4. Injector Working Abnormal
5. The Air-Fuel Mixture Too Rich
6. The Air-Fuel Mixture Too Lean
7. Ignition System: Spark Plug
Abnormal, Ignition Wire Abnormal
"Ignition System" in the
.
8. Knock Sensor (KS) System Ignition
Delay Too Great
9. Crankshaft Position Sensor
10. Thermostat Abnormal
"Engine Cooling System" in the
11. Generators Working Abnormal
"Starting/Charging System" in the
Lack of Fuel Supply, Misfire
Fault Definition: After the
engine speed increases, there
is continuous pulsation, or
jitter, usually even more
noticeable with the engine load
increases. When the engine
speed is above 1,500 rpm, the
fault does not appear.
1. ECM Power Supply Circuit
2. Air Cleaner Filter Blocked
---
3. Fuel Pressure Abnormal
"Fuel System" in the
.
4. Injector Working Abnormal
5. Idle Air Control Valve
6. The Air-Fuel Mixture Too Rich or Too
Lean
7. Knock Sensor (KS) System Ignition
Delay Too Great
"Ignition System" in the
.
8. Spark Plug: Thermal Value Incorrect,
damp, Crack, Gap Incorrect, Excessive
Erosion, Excessive Carbon Residue,
Contaminated by Fuel
9. Spark Plug Wire Damage
10. Ignition Coil Damage
11. Crankshaft Position Sensor
12. Excessive Engine Oil in Combustion
Chamber or Valve Seals Leakage
"Engine Mechanical System" in the
2-44
Control System JL4G18-D
Engine
Symptoms
Suspected Fault Items
Relevant Sections
Lack of Fuel Supply, Misfire
Fault Definition: After the
engine speed increases, there
is continuous pulsation, or
jitter, usually even more
noticeable with the engine load
increases. When the engine
speed is above 1,500 rpm, the
fault does not appear.
13. Cylinder Compression Pressure
Incorrect
14. Valve Stagnant or Leakage
15. Camshaft Convex Corner Wear
16. Valve Timing Incorrect
17. Valve Spring Broken
18. Excessive Carbon Residue in
Combustion Chamber
19. Camshaft, Cylinder Head, Piston,
Connecting Rod and Bearing Abnormal
20. Exhaust Not Smooth: Three-way
Catalytic Converter Plug, Muffler Internal
Damage
"Engine Exhaust System" in the
21. Electromagnetic Interference (EMI)
in the voltage circuit may lead to engine
Misfire. Use the scan tool to monitor the
engine speed to detect electromagnetic
interference. Engine speed parameters
sudden increase while the actual engine
speed is almost no change indicates the
presence of electromagnetic
interference. If there is a fault, check
whether there is a high voltage part in the
vicinity of the ignition control circuit.
---
Engine
Control System JL4G18-D
2-45
2.2.7.5 ECM Connector Terminal Table
FE02-5003b
1
3
5
7
8
6
4
2
9
10
11
12
13
23
24
25
26
27
28
29
30
37
51
52
53
54
55
56
57
58
59
60
61
62
63
64
38
39
40
41
42
43
44
45
46
47
48
49
50
31
32
33
34
35
36
14
15
16
17
18
19
20
21
22
Note:
1. UB represents the battery voltage.
2. If there is no instructions, GND is 0 V or close to 0 V.
Terminal
Number
Name
Wire
Terminal Description
Status
Specified Condition
1
-
-
-
-
-
2
AT-CVVT1
0.85 W/L
Intake Variable Cam Timing
(Intake)
Idle
GND (<0.85 V)-UB of
The PWM Wave
3
A-P-ZUE1I
0.85 W
Ignition Coil 1, Cylinder 4
Control
Idle
GND (<1.8 V)-UB of The
PWM Wave clamping
voltage (nominal) 400 V
4
AS-LSHHK
0.85 G/B
Post-Catalytic Heated
Oxygen Sensor Control
When Heated
GND-UB of The PWM
Wave
5
MM-ZUE
1.5 B
Ground (Ignition Ground)
All Status
0 Ω
6
AS-LSHVK
0.85 B/O
Pre-Catalytic Heated
Oxygen Sensor Control
When Heated
GND-UB of The PWM
Wave
2-46
Control System JL4G18-D
Engine
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