Sym Joyride 125 Service Manual page 112

Parts No.
Item Parts Service schedule
Name
8 325-002 At least 20000km
ECU life-expectancy
Check every
3000km
9 Idle speed Check for new
CO motorcycle and
Adjustment every 3000km.
To this chapter contents
Inspection Method
Connect the diagnostic tool.
Record the ECU service time.
Warm up the motorcycle by running
it in 50km/hr for 5 minutes.
Connect the diagnostic tool.
Record the idle speed CO value, and
engine rpm
In O2 sensor closed-loop system, the
CO value should be kept in normal
range. If the CO value goes wild,
please check the O2 sensor, engine,
injector, and the fuel system for
malfunction.
5
. Fuel Injection System
Adjustment & replacement procedure
ECU replacement procedure:
Connect the Diagnostic tool onto the
original ECU.
Record the ECU service time.
Turn off the ignition switch.
Replace the ECU with new one.
Re-set the ECU service time.
Clean the carbon deposition around
the throttle body.
Please refer to idle speed adjustment
section for idle speed CO value
confirmation.
Warm up the motorcycle by running it
in 50km/hr for 5 minutes.
Connect the Diagnostic tool.
Record the idle speed CO value, rpm.
Use the Data Scan to adjust the idle
speed CO value to be 0.5%~2.0%.
Record the idle speed CO value, rpm
and CO variant value.
(The engine temperature has to be in
115℃~140℃, and intake temperature
to be in 25℃~40℃ as adjusting.)
Perform ECU learning
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