55 V Alternator Circuit Test - Evinrude E-TEC E40DRLSCB Service Manual

ELECTRICAL AND IGNITION
CHARGING SYSTEM TESTS
Start and run the outboard at approximately 5000
RPM. Use the variable load tester to draw the bat-
tery down at a rate equivalent to the stator's full
output.
•
The ammeter should indicate nearly full output,
Approximately 25 A @ 5000 RPM.
Decrease the battery load toward 0 A.
•
Ammeter should show a reduced output. As the
current draw decreases, the battery voltage
should stabilize at approximately 14.5 V.
•
If results vary, check stator BEFORE replacing
the EMM. Refer to STATOR TESTS on p. 126.
55 V Alternator Circuit
Check battery ground cable for continuity.
With the key switch ON, check battery voltage at
battery (12 V), then check voltage on white/red
wires at J2 connector of EMM. Use Electrical Test
Probe Kit, P/N 342677 and a multimeter set to
read 55 VDC. Voltage at EMM connector should
be 0.5 to 1 V less than battery.
128
1. J2 connector
With outboard running at 1000 RPM, voltage on
white/red wires should increase to 55 V.
Voltage readings at a specific speed (RPM)
should be steady.
If there is any other reading, refer to STATOR
TESTS on p. 126. Inspect the stator wiring and
connections. Inspect the capacitor wiring, connec-
tions, and capacitor. Repair the wiring or replace a
faulty capacitor, stator, or EMM.
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