Sym ATTILA RS-21 EFi 150 Service Manual page 53

4. FUEL INJECTION SYSTEM
Abnormal CO Correct Value
Idle speed misfire.
Connect the Data Scan
and check trouble content
if there is an abnormal
CO correct value in idle
speed.
Is fuel enough?
Are the battery wires loose?
Is the voltage enough?
Is the vacuum hose
leaking?
4-8
This chapter Contents
Does the throttle valve cable
stuck so could not be
set-up?
Start the engine and warm it
up to 115¢ J ~125¢ J . Make
sure whether the engine
RPM, the openness
º
(75
valve, and the fuel injection
time are in normal.
Is the CO value in idle speed
out of set up range?
(0.5%~3.0%)
Keep the engine running for
3~5 minutes and then turn
off the engine after
confirmed engine operation
in normal. Conduct Error
code erasing operation.
If the abnormal co correct
value problem still cannot be
solved after check above
related EFI components item
by item, then check if the
other traditional components
on the engine is in abnormal.
Connect the Data
Scan and enter into
the data analysis
menu.
º
~90 ) of the by-pass
Switch the Data Scan to
CO adjustment at idle
menu. Positive value is
for enrichment, and
negative value is for
lean.