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Engine and Control Systems
Engine Control Systems
4
If the BP sensor reads less than 70 KPa, the
EMM:
If the BP sensor reads greater than 105 KPa, the
EMM:
Exhaust Pressure Sensor
The exhaust pressure sensor monitors exhaust
pressure during all running conditions to compen-
sate for engine loads.
If the sensor reads less than -85 in. water, or
greater than 85 in. water, or the sensor or circuit
fails, the EMM:
If exhaust pressure is less than –40 in. water, the
EMM:
If exhaust pressure is greater than 80 in. water,
the EMM:
External Sensors
Sensor inputs and internal EMM controllers are
used to control outboard operation. Use Evinrude
Diagnostics software to troubleshoot the sensors.
Refer to the Fault Code Chart at the back of this
manual for a complete list of all engine fault
codes.
The EMM provides a 5 V DC signal for sensor cir-
cuits. It monitors all sensor voltage inputs and
compares them to predetermined acceptable
ranges. Inputs that fall outside of the acceptable
range create fault codes.
Air Temperature Sensor
The air temperature sensor monitors the air tem-
perature at the plenum.
If the AT sensor temperature value is below
–22° F (–30° C), the EMM:
If the AT sensor temperature value exceeds
158° F (70° C), the EMM:
If the AT sensor circuit fails, the EMM:
Exhaust Temperature Sensor
The exhaust temperature (EGT) sensor monitors
the exhaust temperature at the exhaust adapter.
If the EGT sensor circuit fails (exhaust tempera-
ture less than 60°F (20°C) for 5 seconds), the
EMM:
If the EGT sensor temperature value exceeds:
• 122°F (50 °C), less than 1500 RPM
• 122 to 149°F (50 to 65 °C), less than 2500 RPM
• 149 to 194°F (65 to 90 °C), less than 3750 RPM
• 194°F (90 °C), greater than 3750 RPM
the EMM:
Engine Temperature Sensor
Monitors cylinder head temperature.
If cylinder head temperature exceeds 194° ±3°F
(90° ±1.6°C) above 3500 RPM for 3 seconds, the
EMM:
Stores fault code 45
Stores fault code 46
Stores fault code 87
Stores fault code 88
Stores fault code 89
Stores fault code 48
Engine Monitor: TEMP display ON
Stores fault code 49
Engine Monitor: TEMP display ON
Stores fault code 47
Engine Monitor: TEMP display ON
Stores fault code 134
Engine Monitor: CHECK ENGINE display ON
Activates S.A.F.E. (limited to 1000 RPM)
Stores fault code 136
Engine Monitor: CHECK ENGINE display ON
Stores fault code 43 (port sensor)
Stores fault code 69 (starboard sensor)
Engine Monitor: TEMP display ON
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