Service Manual 40-65 HP E-TEC Engine Managment Module [Internal 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.

Monitors the temperature of the fuel injector driver circuits.

If the EMM temperature exceeds 176°F (80°C) or the circuit fails, the EMM:

Activates S.A.F.E.
Stores service code 25
EMM LED 4: ON (Running)
Engine Monitor TEMP display: ON

If EMM temperature exceeds 212°F (100°C) or the circuit fails, the EMM:

Activates SHUTDOWN
Stores service code 29
EMM LED 4: FLASHING
Engine Monitor TEMP display: FLASHING

IMPORTANT: The outboard will not restart until the engine cools below 212°F (100°C)and the EMM temperature returns to normal. Refer to
SHUTDOWN MODE on p. 94.

If EMM temperature is less than -22°F (-30°C) or the circuit fails, the EMM:

Stores service code 24
EMM LED 3: OFF (Cranking)
EMM LED 3: ON (Running)

If sensor reads less than -71°F (-57.4°C) or greater than 313°F (156°C), a sensor circuit fault is detected and the EMM:

Stores service code 23
EMM LED 3: OFF (Cranking)
EMM LED 3: ON (Running)

Monitors the EMM’s 55 V alternator circuit.

If system voltage exceeds 57 volts, the EMM

Activates S.A.F.E.
Stores service code 18
EMM LED 1: ON (Running)
Engine Monitor CHECK ENGINE display: ON

If system voltage is below 45 volts with outboard running 500 to 1000 RPM or is below 52 volts with outboard running above 1000 RPM, the EMM:

Activates S.A.F.E.
Stores service code 17
EMM LED 1: ON (Running)
Engine Monitor CHECK ENGINE display: ON

Monitors the EMM’s 12 V alternator circuit.

If battery voltage exceeds 15.5 volts, the EMM:

Stores service code 27
EMM LED 1: ON (Running)
Engine Monitor LOW BATTERY display: ON

If battery voltage is below 12 volts with outboard running 500 to 2000 RPM OR is below 12.5 volts with outboard running above 2000 RPM, the EMM:

Stores service code 26
EMM LED 1: ON (Running)
Engine Monitor LOW BATTERY display: ON

Supplies the EMM with barometric pressure reading to compensate for changes in altitude and air density.

If the BP sensor reads below 13.3 KPa or above 119.0 KPa, or the sensor or circuit fails, the EMM:

Stores service code 44

If the BP sensor reads below 70 KPa, the EMM:

Stores a service code 45

If the BP sensor reads above 105 KPa, the EMM:

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 circuits. It monitors all sensor voltage inputs and compares them to predetermined acceptable ranges. Inputs
that fall outside of the acceptable range create service codes.

Monitors the air temperature at the throttle body.The air temperature sensor is a negative temperature coefficient (NTC) thermistor. As temperature increases, the resistance of the sensor decreases resulting in a lower voltage reading at the EMM. Temperature decreases result in a resistance increase and a higher voltage reading at the EMM.

If the AT sensor voltage is out of the expected range, or the sensor or circuit fails, the EMM:

Stores service code 47
EMM LED 3: OFF (Cranking)
EMM LED 3: ON (Running)
Engine Monitor CHECK ENGINE display: ON