Fuel System - TOHATSU MFS 25D Service Manual

Check operation of
fuel feed pump (FFP).
Operating noise
heard?
Measure fuel pressure.
Specified range?
Check injector clogging
and resistance.
Normal?
Go to next page.
4st 25/30 2022

Fuel System

Use the "Air purging for high pressure fuel circuit"
function in the diagnosis menu and check the
operation of the fuel feed pump (FFP).
Check electrical conductivity
of wire harness and fuse.
Conductive?
Check output from ECU to
fuel feed pump (FFP).
Output signal
exists?
Check fuel filter for clogging
and dirt, and piping for leak.
Normal?
9
9-7