31 5. FUEL INJECTION SYSTEM MXU 550EXi/MXU500i 1. FI DIAGNOSTIC TOOL This tool is developed by KYMCO and for KYMCO vehicle only. Please refer to the specification when serving this vehicle. This tool is without battery inside. The power is provided from vehicle. This software can be updated with computer for new model through the USB cable. The power required of tool is connected with 12V battery. For connection, please connect this tool with the connector of ECU. It's available when turning on the ignition switch. The function includes ECU version, model name, data analysis . - ECU version: includes model name, ECU number, identifications number and software version. - Failure codes: DTC reading, DTC clearing and troubleshooting. - Data analysis: For ECU's software inspection. - Adjust : The adjust function setting is not allowed ECU Version Model No. DTC Inspect DATA Analyze Adjust UP Button Down Button Power indicator Enter or Exit DTC indicator(Failure codes) 5-31