11. EFI SYSTEM MXU 450i
11-6
THROTTLE BODY
/T-MAP SENSOR/ISC/TPS
● Turn off the ignition switch while
replacement.
● Check and confirm if the voltage is over 12V
by a voltmeter after replacement.
● Check and confirm if the other connectors
are installed correctly after replacement.
● Do not damage the throttle body, it may
cause the throttle and idle valve isn’t
synchronization.
● The throttle body is preset in KYMCO
factory, do not disassemble it by a wrong
way.
● Do not loosen or tighten the painted bolts
and screws for the throttle body. Loosen or
tighten them can cause the throttle and idle
valve to synchronization failure.
● TPS and ISC have to be reset after the
throttle body T-MAP, TPS, ISC or ECU
has been reinstalled.
T-MAP SENSOR INSPECTION
Support the scooter on a level surface.
Put the side stand up and engine stop switch
is at “RUN”.
Turn the ignition switch to “ON” position.
Measure if the ECU voltage outputs to the T-
MAP sensor between the following terminals
of the MAP connector.
Terminal Normal
V/R (+) -V/G (-) 5 V
TPS Sensor T-MAP Senso
ISC
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