KYMCO Downtown 350i Repair Manual page 315

6.Fuel System
Downtown 350i
Set the engine stop switch to the "RUN" position.
Unplug the fuel pump connecter.
Set the multi meter to read battery voltage.
Touch the multi meter leads to the harness side of the fuel pump connector, with
the positive lead touching the red/black wire terminal and the negative lead
touching the green wire terminal.
Turn the ignition switch on. The battery voltage should show for a few seconds.
Replace the fuel pump if it is not functioning and the input voltage is correct.
If the battery voltage is not present check the following:
● Fuse B (10 A)
● Fuel cut-off relay
● ECU
6-14