Circuit Sensor; Barometric Pressure Sensor; External Sensors; Air Temperature Sensor - BRP Evinrude E-TEC Series Service Manual

5 V Circuit Sensor
Monitors the EMM's 5 V sensor circuit.
If sensor voltage is less than 4.75 volts, the EMM:
Stores service code 78
EMM LED 3: OFF (Cranking)
EMM LED 3: ON (Running)

Barometric Pressure Sensor

Supplies the EMM with barometric pressure read-
ing to compensate for changes in altitude and air
density.
If the BP sensor reads less than 13 KPa or greater
than 119.0 KPa, or the sensor or circuit fails, the
EMM:
Stores service code 44
If the BP sensor reads less than 70 KPa, the
EMM:
Stores a service code 45
If the BP sensor reads greater than 105 KPa, the
EMM:
Stores service code 46
ENGINE MANAGEMENT MODULE (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 EMM Service 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 service codes.

Air Temperature Sensor

The air temperature sensor monitors the air tem-
perature at the throttle body.
If the AT sensor voltage is out of the expected
range, or the sensor or circuit fails, the EMM:
Stores service code 47, 48, or 49
EMM LED 3: OFF (Cranking)
EMM LED 3: ON (Running)
EXTERNAL SENSORS
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