BRP E250DHLSCS, Service Manual

Page: 122 / 396

120
SYSTEM ANALYSIS
FUEL DELIVERY TESTS
Capacitor Test
IMPORTANT:
Make sure the capacitor is dis-
charged before testing. Make a momentary con-
nection between the two terminals to ground any
stored energy.
Use an ohmmeter set on the high ohms scale to
test the capacitor. Connect the meter leads to the
capacitor terminals:
•
If the capacitor is working correctly, it will store
energy from the meter. The resistance reading
will increase until it goes to (nearly) infinity.
•
If the capacitor is shorted, the reading will
immediately show full continuity.
•
If there is an open circuit in the capacitor, the
meter will show no continuity.
If the resistance reading starts as a negative num-
ber, or the reading goes down in value, the capac-
itor already retains some stored energy. Ground
the capacitor and test again.
FUEL DELIVERY TESTS
Refer to
Relieving Fuel System Pressure
on
p. 174.
Check the
Evinrude Diagnostics
software
Stored
Faults
screen for current service codes before
troubleshooting. Correct any problems and clear
the codes FIRST.
Inspect all fuel hoses, filters, and connections.
Check quality of fuel supply.
Fuel Pump Static Test
Use the
Evinrude Diagnostics
software Fuel
Pump test to activate the electric fuel pump. If the
pump runs, the
EMM
and fuel pump circuit are not
at fault.
WARNING
Protect against hazardous fuel spray.
Before starting any fuel system service,
carefully relieve fuel system pressure.
Static Tests Screen
006813