97
ENGINE MANAGEMENT MODULE (EMM)
EMM DIAGNOSTICS
4
Oil Injector
Use the diagnostic software to test the oil injection
pump electrical circuit. Monitor the voltage at pin 2
(blue wire) of oil tank connector. Voltage should
drop while the static test is active.
IMPORTANT:
Oil injection pump will not activate
on 12 V. Use voltmeter to check circuit voltage.
Fuel Pump
Use the diagnostic software to test the fuel pump.
Make sure the pump is wired correctly. If the pump
activates, the
EMM
and fuel pump circuit are not
at fault. If the pump does not run during the static
test, check voltage and continuity of pump circuit.
Refer to
Circulation Pump Resistance Test
on
p. 166. Fuel pump resistance is approximately 2
to 3
Ω
.
Oil Fault
This test is used to simulate an oil pressure switch
circuit malfunction and is used to check the “NO
OIL” circuit of the
SystemCheck
gauge.
Overheat
This test is used to simulate an overheat situation
and is used to check the “ENG TEMP” or “HOT”
circuit of the
SystemCheck
gauge.
Check Engine
This test is used to check the “CHECK ENGINE”
circuit of the
SystemCheck
gauge.
Tachometer
This test is used to check operation of the tachom-
eter circuit.
Dynamic Tests
Dynamic tests are performed with the outboard
running.
Fuel Test
The Fuel Test is performed with the outboard run-
ning (600 RPM minimum). This test momentarily
disables one fuel injector circuit. By dropping one
cylinder, RPM and running quality changes can be
observed. Refer to
Dynamic Tests
on p. 110.
Ignition Test
The Ignition Test is performed with the outboard
running (600 RPM minimum). This test momen-
tarily disables the ignition circuit to one cylinder.
By dropping one cylinder, RPM and running qual-
ity changes can be observed. Refer to
Dynamic
Tests
on p. 110.
Prime Oil
This test is used to cycle the oil injection pump for
priming the oiling system. Perform this test with
outboard running to activate oil injection pump.
Dynamic Tests Screen
005167
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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