
102
ENGINE MANAGEMENT MODULE (EMM)
SYSTEMCHECK ENGINE MONITOR
The system logic is provided by a microprocessor
in the gauge. The microprocessor connects to the
EMM
and the oil level sending unit of the oil tank.
Refer to the
EMM
Service Code Chart
located at
the back of this manual for a detailed list of service
codes related to
SystemCheck
activation.
The
EMM
will activate the warning horn and the
appropriate LED on the gauge as follows:
•
NO OIL light indicates an oil delivery problem
such as an empty oil tank or damaged oil sys-
tem components.
•
WATER TEMP or HOT light indicates an engine
or
EMM
overheat condition.
•
CHECK ENGINE light is used to indicate
numerous fault conditions identified by
EMM
.
The oil tank sending unit will activate the warning
horn and the LOW OIL LED of the gauge.
•
LOW OIL light indicates the oil level in the oil
tank is down to the reserve level (about 1/4 full).
System Self-Test
During engine start-up, pause with the key switch
in the ON
position. The horn self-tests by sound-
ing a half-second beep. The gauge self-tests by
turning the indicator lights on simultaneously, then
off in sequence. This self-test routine might occur
more than once during start up if battery voltage
drops to 7 V. Self-test repeats if the key switch is
turned OFF and ON.
Service Mode
SystemCheck
goes into a service mode if the key
is left ON after self-test (engine NOT
running). All
light circuits and sensors are active, but the horn
is not. Grounding the appropriate light circuit wire
will turn the light on, but the horn will not sound.
Engine Running
All warning light circuits are active when the
engine is running. A microprocessor in the gauge
monitors the tach circuit and activates the horn cir-
cuit when engine speed exceeds 500 RPM. The
gauge will continue monitoring until the engine
stops.
SystemCheck
warnings activate the horn for 10
seconds and the appropriate gauge light for a
minimum of 30 seconds. This allows adequate
time for the operator to look at the gauge after
hearing the horn. If the failure is momentary (
e.g.
,
oil moving in the tank), the light will remain ON for
the full 30 seconds before going out. If the fault
continues, the light remains ON until the key is
turned OFF or the failure is corrected. The warn-
ing will reoccur at the next start-up if the problem
is not corrected.
Summary of Contents for E-tec 75 HP
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Page 233: ...233 POWERHEAD POWERHEAD VIEWS 10 POWERHEAD VIEWS Port Short Block Starboard Short Block ...
Page 234: ...234 POWERHEAD POWERHEAD VIEWS Port Dressed Powerhead Starboard Dressed Powerhead ...
Page 235: ...235 POWERHEAD POWERHEAD VIEWS 10 Front ...
Page 236: ...236 POWERHEAD POWERHEAD VIEWS Rear ...
Page 237: ...237 POWERHEAD POWERHEAD VIEWS 10 Top ...
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