Sym MAXSYM 400i - Page 102

4. Fuel Injection System
4-57
Troubleshooting Table
Test items
Abnormal
phenomena
Comprehensive testing program
Parts
Power
voltage
Fuel
press.
Ignition
state
Engine
vacuum
Injection
state
closed-
loop
control
system
Fault
Code
Detection
ECU
Throttle
position
sensor
Engine
temp.
sensor
Start
state
Can’t start







Difficult to
start






Idle
state
Without
idle






Idle not
smooth




ˇ
RPM NG


CO NG





Acceler-
ation
Not smooth








Inability
and slow








Flameo-
ut
Idle
flameout


Acceleratio
n flameout


Related spare parts
Roll over
sensor
Fuel pump
Ignition
coil
Inlet pipe
Injector
O2 sensor
Power
relay
Fuel
pressure
adjustment
valve
Spark plug
Cylinder
head
Fuel pump
Secondary
air
injection
solenoid
valve
Security
unit
Fuel pump
relay
Inlet
pressure
sensor
Fuel
pressure
adjustment
valve
Main
switch
Fuel filter
Battery
Notes: 1. Integrated test motorcycle, according to the "Comprehensive Maintenance list" implementation.
2. Spare parts, according to the "EFI System components description" implementation.
To this chapter contents