Running Fuel System Tests - Evinrude E-Tec 40 HP Service Manual

Results:
No injectors actuate:
Use the Monitor screen of the diagnostics soft-
•
ware to make su re volt age is present on the
system voltage circuit.
Refer to Running Fuel System Tests on p. 85.
•
Some injectors actuate; some do not:
For non-working injectors, test the resistance of
•
injector circuit between the
and injector control wire at the EMM.
See Fuel Injector Resistance Test on p. 139.
•
All injectors actuate:
Refer to Running Fuel System Tests on p. 85.
•

Running Fuel System Tests

Run or crank the outboard.
Use the Evinrude Diagnostics sof tware Monitor
screen to check syste m voltage. If vo ltage is low,
or drops as RPM increases, refe r to Stator Volt-
age Output Test on p. 97.
Use an inductive timing light to monit or the injec-
tor control wire (connector pin 2) for each injector.
Make sure the pickup is attached to only one wire.
Flashes on th e timing light indicate current in the
circuit is being switche d by the
Dynamic Tests screen allows the contr ol signal to
be turned off to a particular injector.
Some t iming lights may not flash
IMPORTANT:
consistently at cranking speeds. Always check the
orientation of the timing light pickup and the oper-
ation of the timing light.
Results:
No light activation on any injector wires (outboa rd
cranks and starter turns flywheel):
•
•
Irregular or n o lig ht activa tion o n some in jector
wires:
injector connector
•
•
•
•
Steady light activation o n all in jector wire s an d
consistent voltage readings, EMM injector contro l
function is good:
•
EMM. The
Dynamic Tests Screen
•
•
FUEL DELIVERY TESTS
Check stator input to EMM, CPS operation, and
all grounds and wiring connections.
Eliminate all other possibilities to isolate a faulty
EMM.
Test the resist ance of individual injector circuits
between the injector connector and injector con-
trol wire at the EMM.
Check battery cable connections.
Make sure all grounds are clean and tight.
See Fuel Injector Resistance Test on p. 139.
Use the diagnostics software Dynamic Fuel Test
to isolate a faulty cylinde r. See
TESTS on p. 76.
Refer to Fuel Injector Pressure Test on p. 138.
Refer to Fuel System Pressure Test on p. 137.
SYSTEM ANALYSIS
DYNAMIC
008570A
85
5