91
ENGINE MANAGEMENT MODULE (EMM)
EXTERNAL SENSORS
5
If code 11 is present as both a Hard Fault and a
Stored Fault, refer to
If the TPS or TPS circuit fails (below 0.14 volts or
above 4.92 volts), the
EMM
:
IMPORTANT:
When a TPS circuit fault has
been detected, the outboard will not accelerate
above idle speed. To reset, stop the outboard and
correct the fault.
If the TPS circuit reads below 0.2 volts, the
EMM
:
If the TPS circuit reads above 4.85 volts, the
EMM
:
Crankshaft Position Sensor
The CPS is a magnetic device. It is mounted on
the throttle body, next to the flywheel.
Ribs spaced on the flywheel mark crankshaft posi-
tion. As the ribs pass the magnetic field of the
CPS, an AC voltage signal is generated. The
EMM
uses this signal to identify crankshaft posi-
tion and speed, generate a tachometer signal, and
control fuel and ignition timing.
If the sensor is damaged or the signal is intermit-
tent (10 instances), the
EMM
:
Approximate air gap between CPS and flywheel
ribs is .073 (1.85 mm).
Use the
Evinrude Diagnostics
software
Monitor
screen to check CPS operation. The software
should show an RPM reading while the outboard
is cranking. If the CPS or its circuit fails, no RPM
reading will appear and the outboard cannot run.
Neutral Switch
The powerhead mounted neutral switch controls a
ground signal from the
EMM
to indicate shift link-
age position. This allows the
EMM
to control idle
speed variations for NEUTRAL or IN GEAR. Tiller
models use the switch for start in gear protection.
Fuel and ignition functions are turned off if the
neutral switch is not closed.
If the starter is cranked while the outboard is in
gear, or if the switch fails, the
EMM
:
The
Monitor
screen of the diagnostics software
displays switch position, NEUTRAL or IN GEAR.
Make sure switch is operating properly.
Stores service code 12
Limits engine RPM to IDLE
EMM
LED 3: OFF (Cranking)
EMM
LED 3: ON (Running)
Engine Monitor CHECK ENGINE display: ON
Stores service code 13
EMM
LED 3: OFF (Cranking)
EMM
LED 3: ON (Running)
Engine Monitor CHECK ENGINE display: ON
Stores service code 14
EMM
LED 3: OFF (Cranking)
EMM
LED 3: ON (Running)
Engine Monitor CHECK ENGINE display: ON
Stores service code 16
EMM
LED 3: OFF (Cranking)
EMM
LED 3: ON (Running)
Stores service code 19
EMM
LED 3: OFF (Cranking)
Engine Monitor CHECK ENGINE display: ON
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 ...