5. FUEL INJECTION SYSTEM MXU 500EXi/MXU500i THROTTLE BODY /T-MAP SENSOR/ISC/TPS TPS Sensor T-MAP Sensor 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 ISC 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 (-) 5V 5-25