118
SYSTEM ANALYSIS
IGNITION OUTPUT TESTS
Crankshaft Position Sensor (CPS)
Test
When the CPS is working properly, EMM LED 2
turns on while the outboard is being started.
Use the Evinrude Diagnostics software CPS Sync
and engine RPM displays to confirm a valid CPS
signal while the outboard is cranking or running.
An RPM display higher than zero indicates a CPS
signal to the EMM.
Check CPS resistance (560 Ω ± 10%). Make cer-
tain ohmmeter is calibrated properly. Refer to
Crankshaft Position Sensor (CPS) Test on
p. 134.
System Voltage Test
The ignition system is powered by the 55 V sys-
tem.
Use the Evinrude Diagnostics software Monitor
screen to check system voltage.
Results:
• KEY ON (not running) - 30 V ± 2, system volt-
age is GOOD.
• KEY ON (not running) - less than 30 V ± 2,
check 12 V power to EMM. Repair connection
or wiring. Possible fault in EMM SAC circuit.
• RUNNING - 55 V ± 2, system voltage is GOOD.
• RUNNING - less than 55 V ± 2, check stator
output to EMM. Repair connection or wiring.
Possible faulty stator or EMM. Refer to STA-
TOR TESTS on p. 136.
IMPORTANT: The EMM must be ON for voltage
to be present on the system voltage (55 V) circuit.
Power is normally supplied to the EMM when the
key switch is turned ON. The EMM is also turned
ON when it begins to receive AC voltage from the
stator while the outboard is being cranked.
Engine Monitor Screen, Engine RPM display 006751
Engine Monitor Screen, System Voltage 006571
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