5
. Fuel Injection System
5-13
Abnormal CO value
If the system has O2 sensor, the CO value doesn’t have to be adjusted. If the CO value still goes
abnormal, please check O2 sensor first, to see if any malfunction occurred.
Connect the Data Scan
and enter into the data
analysis menu.
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 are in
abnormal.
Switch the Data Scan to
CO adjustment at idle
menu. Positive value is for
enrichment, and negative
value is for lean.
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?
re the battery wires
loose?
Is the voltage enough?
Is the vacuum pipe
leakin
?
Does the throttle valve cable
stuck so could not be set-up?
Start the engine and warm it
up to 115℃~125℃. Make
sure whether the engine
RPM, the openness (75
º~90º)
of the by-pass 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 run for 3~5
minutes and then turn off the
engine after confirmed
engine operation in normal.
Conduct Error code erasing
o
eration.
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