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Manuals
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Sym Manuals
Scooter
RV 250i
Service manual
Integrated Troubleshooting Procedure - Sym RV 250i Service Manual
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
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Integrated Troubleshooting Procedure
Checking,
Detection of
adjusting
maintenance projects
Project
and steps
Battery
Use meter direct
●
measurement
voltage
battery voltage
Use diagnosis
●
tool detection
battery voltage
Diagnosis
Use of the
●
fault code
diagnosis tool
inspection
detection fault
code
Elimination of
●
fault codes, and
then start engine
Fuel
Removed the
●
injector on the
quantity and
intake manifold,
fuel
but not removal of
pressure
harness coupler.
(Injector and
injector cap tightly
by hands, fuel
spills should not
be the case)
Start the engine
●
Examine whether
●
injector fuel
injection
Between the tank
●
and injector
installation the
pressure gauge
check fuel
●
pressure
adequacy
Ignition
Removed the
●
situation
spark plug from
the cylinder
head, but then
power lines still
ring
Start the engine
●
check spark plug
●
sparks
To this chapter contents
Fault status
determination
Battery voltage
●
is 10 V above?
NO
Diagnosis tool
●
show whether
the voltage of 10
V above?
YES
Diagnostic tool
●
show whether or
not a fault code?
YES
Fault Code
●
cleared after
show again?
NO
Injector whether
●
injection?
Injector spray
●
angle is normal?
Fuel pressure
●
enough?
NO
YES
Examine
●
whether the
spark plug
NO
ignition?
Check spark
●
plug sparks
strength is
normal?
YES
Continued next page
4. Fuel Injection System
Fault reasons
Battery electricity
●
Battery connector
●
loose
Harness circuit
●
opening
ECU coupler not
●
connected properly
TPS fault
●
ETS fault
●
CPS fault
●
MAP fault
●
O2 sensor fault
●
ROS fault
●
ECU fault
●
less than fuel tank
●
Injector fault
●
Fuel pump relay
●
fault
Fuel pump fault
●
ECU fault
●
Fuel pump filter
●
obstructive
Spark plug fault
●
Roll over sensor
●
fault
ECU fault
●
Ignition coil fault
●
Crankshaft position
●
sensor fault
Parts specifications
Diagnosis tool
●
display voltage
required to
achieve more
than 10 V
The sensor
●
detection
methods and
specifications,
please refer to
repair manual
Pressure fuel
●
specifications:
Open the main
switch three
seconds after
but not start
engine →more
than 250 kPa
Idle →
294±6kPa
Injector
●
resistance
specifications:
11.7±0.6Ω
Spark plug
●
specifications:
NGK-CR8E
4-37
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Chapters
Table of Contents
4
2. Maintenance Information
24
3. Lubrication System
42
Integrated Troubleshooting Procedure
50
5. Removal & Installation of Engine
110
6. Cylinder Head / Valve
122
7. Cylinder / Piston
138
8. V-Belt Drive System
146
9. Final Drive Mechanism
160
10. AC. Generator / Start Clutch
168
11. Crankshaft / Crankcase
178
12. Cooling System
186
13. Body Cover
200
14. Brake System
214
15. Steering / Front Wheel / Front Cushion
226
16. Rear Wheel / Rear Fork / Rear Cushion
236
17. Electrical System
242
Table of Contents
Troubleshooting
Precautions in Operation
43
Troubleshooting
82
Integrated Troubleshooting Procedure
86
Troubleshooting Table
107
Troubleshooting
124
Precautions in Operation
139
Precautions in Operation
147
Precautions in Operation
161
Precautions in Operation
179
Precautions in Operation
187
Troubleshooting
216
Precautions in Operation
227
Precautions in Operation
237
Troubleshooting
244
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This manual is also suitable for:
Gts 300i
Gts 250i
Joymax 300i
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