KYMCO MXU 450i, Service Manual, Page: 147 / 172

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 Sensor
ISC