CF MOTO CF500-5B 2009, Service Manual, Page: 253 / 272

13 Troubleshooting
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Diagnosis troubles according to EFI system Trouble Code
Note:
1. Only start inspection and fixation when trouble is steady-state;otherwise
diagnosis would probably wrong
2. The “ multimeter ” mentioned below are numerical mutimeter; it is forbidden to
use pointer type multimeter to make EFI system inspecting.
3. When Trouble Code tells “ Low Voltage ” , means probably it ’ s Short Circuit to
Ground or Broken Circuit;
When Trouble Code tells “ High Voltage ” ,means probably it ’ s Short Circuit to
Power;
When Trouble Code tells “ Circuit Error ” ,means Circuit Broken or Various
Errors Exist.
Diagnosis Help:
1.Trouble Code cannot be cleared,means trouble is steady-state;
Focusing on the connector wires ’ possible losen if trouble is incidental,
2.When making inspections ,do not ignore possible affect from vehicle
mantenance condition,cylinder pressure,machanisim timing.
3.If Trouble Code is cleared, it means defective on ECU;
If Trouble Code is not cleared,put back original ECU and repeat inspecting
procedure to start again overhaul inspections.
Following are implications of EFI System Trouble Code,Diagnosis
Measurements, Possible Reasons and their Solutions as references.