Symptom: Starting motor does not run     
Diagnosis procedures
 
 
Electric horn does not sound or sound 
weakly. Turn signal lamp is dim.
 
Electric horn sounds loudly. 
Turn signal lamp is bright.
 
Battery is low or the wire terminal 
connected with battery is poorly 
contacted.  
Grasp brake handle bar (autoscooter), or shift 
transmission into neutral, or grasp clutch handle 
bar, push starter button. 
Starter motor does not run.
Turn on ignition switch; press horn button or slide 
turn signal lamp switch. 
 
Push starter button and the “click” sound from 
starter relay cannot be heard. 
Push starter button and a “click” sound from 
starter relay can be heard. 
Disassemble the connector of starter relay from cables of 
the whole vehicle; connect the two hatching wires from 
relay coil to negative and positive terminals of battery with 
two