Sym ATTILA RS-21 EFi 150 Service Manual page 82

Parts No. Service
Item
Parts Name schedule
5 366-008 At least
Intake 20000km
temperature life-expectancy
/pressure Check every
sensor 3000km
6 308-008 At least
Throttle 20000km
body life-expectancy
Check every
3000km
7 337-004 At least
Fuel injector 20000km
life-expectancy
Check every
3000km
This chapter Contents
Inspection Method
1. Connect the Data Scan as
inspection. The engine intake
temperature and pressure should
close to environmental
temperature & atmosphere
pressure. (conduct this task after
stopped the engine for a while)
2. If the DTC codes of intake
temperature or pressure shown on
the Data Scan, replace the
pressure sensor firstly with new
one. Make sure if the DTC codes
are disappear. If not, check the
connector wire for short-circuit.
Replace the connector if
necessary.
3. If the DTC codes still exist, replace
the ECU.
4. If the DTC codes are disappear,
install the original pressure sensor
and check it again. If the DTC
codes are disappear, then, replace
the ECU with new one.
1. Please refer to idle speed
adjustment section for the idle
speed CO adjustment.
2. Connect the Data Scan and check
if the throttle position DTC code
appears.
3. If the code appears, replace the
throttle body to make sure the
code can be erased.
4. If the code disappears, replace the
throttle body.
5. If the code still exists, replace the
ECU with new one. Then, if the
code can be erased, the ECU has
to be replaced.
1. Check if the fuel injector DTC code
appears.
2. If the code appears, replace a new
fuel injector for confirmation. If the
code can be erased, then, replace
the fuel injector.
3. If the code still can not be clear,
check if connector wire is in
short-circuit.
4. If the code still exists, replace the
ECU with new one. Then, if the
code can be erased, the ECU has
to be replaced.
4. FUEL INJECTION SYSTEM
Adjustment & replacement
Replacement procedure for T-MAP
(intake temperature/pressure
sensor)
1. Turn off the ignition switch.
2. Disconnect the connector of
intake temperature/pressure
sensor. Replace the sensor with
new one.
3. Connect the connector with Data
Scan.
4. Turn on the ignition switch, and
check if the intake temperature/
pressure close to environmental
temperature and atmosphere
pressure with the Data Scan.
5. Erase the DTC codes, and make
sure the problem is solved.
The throttle body replacement
procedure:
1. Install a new throttle body
2. Make sure there is no leaking.
3. Connect the Data Scan and
record carbon accumulated time.
4. Re-set the time with the Data
Scan.
5. Re-set the throttle position data
with the Data Scan.
6. Throttle valve WOT set up. Turn
off ignition switch, and WOT the
throttle valve and hold it. Turn on
the ignition switch and hold for 2
seconds. Release the throttle
valve.
7. Please refer to the idle speed
adjustment section for the idle
speed CO if necessary.
Confirmation or replacement
procedure for the fuel injector:
1. Erase the DTC code with the
Daya Scan.
2. Turn off ignition switch and
disconnect the fuel injector
connector.
3. Connect the connector to a new
fuel injector.
4. Connect the Data Scasn, and turn
on the ignition switch.
5. Make sure the DTC code had
been clear.
6. Please refer to idle speed
adjustment section for idle speed
CO value confirmation.
(Firstly, make sure if the fuel injector
DTC code had been clear, and then
install a new fuel injector.)
procedure
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