Ignition Output Tests; Required Ignition Systems; Wiring Inspection - BRP Evinrude E-TEC Series Service Manual

IGNITION OUTPUT
TESTS
DANGER
The electrical system presents a serious
shock hazard. Allow outboard to sit for
two minutes after running before handling
DO NOT handle primary or secondary igni-
tion components while outboard is run-
ning or flywheel is turning.
Use the Evinrude Diagnostics software Stored
Faults screen to check for current service codes
before troubleshooting. Correct any problems and
clear the codes FIRST.

Required Ignition Systems

Following is a complete list of circuits required for
ignition output:
Stop Circuit
•
Black/yellow wire NOT grounded (emergency
stop switch lanyard in place).
Neutral Switch
•
Powerhead mounted neutral switch provides a
switched ground circuit to EMM. The circuit
enables specialized control functions such as
neutral start protection and RPM limiting in
NEUTRAL.
Stator Output Voltage
•
Provides A/C voltage to EMM J1A connector:
Outboard cranking, typical range is 20-40 VAC
(AC output voltage is related to cranking RPM
Outboard running, approximately 55 VAC.
EMM
•
Controls ignition grounds, injector grounds, and
engine timing.
Crankshaft Position Sensor
•
Provides EMM with input.
•
Outboard cranking speed exceeds 300 RPM
and a steady CPS signal is generated.
Alternator Output/System Voltage
•
System voltage from EMM (white/red) provides
55 VDC to the high pressure fuel pump, the oil
injection pump, the fuel injectors, and the igni-
tion coils.
Ignition Coil
•
Primary circuits are powered by system (55 V)
voltage
•
EMM provides control signal to ignition coil
•
Output from ignition coil secondary winding and
high tension spark plug wire.

Wiring Inspection

Visually inspect all wiring, connections, and
grounds.
Use a digital ohmmeter to test resistance on all
ground circuits and connections. Ohmmeter read-
ings should be approximately 0.0 W.
Check that all engine wire harness grounds have
continuity to the cylinder/crankcase.
1
;
)
1. Main engine harness ground
Clean or repair all ground circuits, wiring, and con-
nections as needed.
SYSTEM ANALYSIS

IGNITION OUTPUT TESTS

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