14. DOWNTOWN 125 i FUEL SYSTEM (Auto Control Fuel Injection System) O2 SENSOR Measure the resistance of the O2 sensor heater. (2 white wire pin) Standard (20°C/68°F ): 6.7 ~9.5 Connect the PDA or KYMCO Fi diagnostic tool. Into the Data Analyze item . Check Page 05 (Key switch ON then start engine until O2 heater activation is ON) 0~1 If data was incorrect. It is possible O2 sensor is not normal ON 14-15