86
ENGINE MANAGEMENT MODULE (EMM)
DESCRIPTION
DESCRIPTION
The Engine Management Module (
EMM)
is a
water-cooled engine controller. It controls many
outboard systems including alternator output for
the 12 V and 55 V circuits. Operating voltage is
supplied to the
EMM
by the stator.
This section discusses the functions of the
EMM
and its various internal and external sensors. It
also describes using
Evinrude
Diagnostics
soft-
ware to retrieve and adjust service information
stored in the
EMM
EMM
Functions
The
EMM
controls the following processes and
functions:
•
Alternator output; 55 V and 12 V
•
Fuel and ignition timing and duration
•
Fuel injector activation
•
Oil injector pump activation
•
Electric fuel pump control
•
Idle speed control
•
RPM limiter
•
Electrical circuit monitoring
•
Service code creation and storage
•
Warning system activation
•
ROM verification, self-test
•
Choke-less cold starting
•
Output of diagnostic data
•
Tachometer signal
•
RPM profile and engine hours
•
Oiling ratios
EMM
Connections
IMPORTANT:
EMM
connections and wiring
must be clean and tight. Improper electrical con-
nections can damage the
EMM
. DO NOT run the
outboard with loose or disconnected wiring.
Make sure
EMM
connections are clean and tight.
•
Engine wire harness to
EMM
connectors; J1-A,
J1-B, J2
•
Stator to
EMM
connections; one 6-pin
AMP
and
J2 connector.
LED Indicators
The
EMM
has four LED indicators located next to
the electrical connectors that provide useful infor-
mation about the status of the system.
IMPORTANT:
LED 1 is toward the top of the
outboard (Closest to
EMM
J1-B connector).
When the ignition key is turned ON, LEDs 3 and 4
should light, indicating that sensor circuits and the
stop circuit are working.
As the outboard is being started, all four LEDs
should light and then go off in sequence. If any of
the LEDs does NOT light during starting, refer to
When the outboard is running, all LEDs should be
off. If any LED is lighted while the outboard is run-
ning, refer to
1.
J1-A connector
2.
J1-B connector
3.
J2 connector
002424
1.
LED indicators
(Cooling hose removed for clarity)
002429
006467
1
2
3
1
Summary of Contents for E75DPLSCB
Page 1: ...2008 SC E TEC 75 90 P N 5007527 75 90 HP 5007527 Service Manual ...
Page 2: ......
Page 231: ...POWERHEAD POWERHEAD VIEWS 229 11 POWERHEAD VIEWS Port Short Block Starboard Short Block ...
Page 232: ...230 POWERHEAD POWERHEAD VIEWS Port Dressed Powerhead Starboard Dressed Powerhead ...
Page 233: ...POWERHEAD POWERHEAD VIEWS 231 11 Front ...
Page 234: ...232 POWERHEAD POWERHEAD VIEWS Rear ...
Page 235: ...POWERHEAD POWERHEAD VIEWS 233 11 Top ...
Page 302: ...S 2 ...
Page 349: ...2008 SC E TEC 75 90 P N 5007527 75 90 HP 5007527 Service Manual ...