Trouble Diagnosis & Solutions Of Efi - Sym ATTILA RS-21 EFi 150 Service Manual

4. FUEL INJECTION SYSTEM
Trouble Diagnosis & Solutions Of EFi
Judgment of Flash Code
When the engine might have problem and also no tester to detect, the problem can be detected by
reading the flash times of CHK lamp on the odometer. And then, the motorcycle is warned what kind
of problem had occurred by means of the solution priority lamp of the tester operation message table,
or the FLASH CODE.
There are descriptions for the two ways below:
To show "the solution priority"
Turn the KEY ON directly, and the CHK lamp goes up for 2 seconds. Then, the CHK lamp will lit up by
3 types for showing the priority of problem solution so that reminds the rider to have the motorcycle
conduct troubleshooting.
st
The 1 Priority: the CHK lamp lit up by every 0.3 second.
nd
The 2 Priority: the CHK lamp lit up continuously.
rd
The 3 Priority: the CHK lamp is not lit up.
To show "FLASH CODE":
Before turning the KEY ON, wide open the throttle valve. Then, turn the KEY ON, the CHK lamp lit up
for 2 seconds and off. But, the CHK lamp will lit up again after off 3 seconds. In the means time,
close the throttle valve. Finally, it is to determine what problem occurred based on the flash time of
CHK lamp.
Before show up, CHK lamp will lit up for 4 seconds firstly. Then, according to the lamp flash times
(every 0.5 second), the problem will be determined by comparing with the operation message table.
nd
If there has the 2 problem in the system, the CHK lamp will have flash operation again after its lit
up for 4 seconds.
Throttle valve 100% on
2 3
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This chapter Contents
Priority
ON
1
OFF
ON
2
OFF
ON
3
OFF
lit up
=
st
The 1 problem shown up
4 0.5 0.5 4
Lit up types
0.3 sec
0.3 sec
lit off
=
nd
The 2 problem shown up
4 0.5 0.5 0.5 0.5 0.5 0.5 4