Exhaust Pressure Sensor; External Sensors; Air Temperature Sensor; Exhaust Temperature Sensor - BRP Evinrude E-TEC G2 Service Manual

If the BP sensor reads less than 70 KPa, the
EMM:
Stores fault code 45
If the BP sensor reads greater than 105 KPa, the
EMM:
Stores fault code 46

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:
Stores fault code 87
If exhaust pressure is less than –40 in. water, the
EMM:
Stores fault code 88
If exhaust pressure is greater than 80 in. water,
the EMM:
Stores fault code 89

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.
Engine and Control Systems
Engine Control Systems
If the AT sensor temperature value is below
–22° F (–30° C), the EMM:
Stores fault code 48
Engine Monitor: TEMP display ON
If the AT sensor temperature value exceeds
158° F (70° C), the EMM:
Stores fault code 49
Engine Monitor: TEMP display ON
If the AT sensor circuit fails, the EMM:
Stores fault code 47
Engine Monitor: TEMP display ON

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:
Stores fault code 134
Engine Monitor: CHECK ENGINE display ON
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:
Activates S.A.F.E. (limited to 1000 RPM)
Stores fault code 136
Engine Monitor: CHECK ENGINE display ON

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 43 (port sensor)
Stores fault code 69 (starboard sensor)
Engine Monitor: TEMP display ON
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