Internal Sensors; Emm Temperature Sensor; 55 V Circuit Sensor - BRP E250DHLSCS Service Manual

ENGINE MANAGEMENT MODULE (EMM)

INTERNAL SENSORS

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.
Internal sensors are NOT serviceable. Repro-
gramming or replacement may be required to
resolve EMM related issues.

EMM Temperature Sensor

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
The outboard will not restart until
IMPORTANT:
the engine cools below 212°F (100°C) and the
EMM temperature returns to normal. Refer to
SHUTDOWN MODE on p. 100.
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)
94
If sensor reads less than -67°F (-55°C) or greater
than 311°F (155°C) a sensor circuit fault is
detected and the EMM:
Stores service code 23
EMM LED 3: OFF (Cranking)
EMM LED 3: ON (Running)

55 V Circuit Sensor

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 less than 45 V between 500
and 1000 RPM, or is less than 52 V 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
12 V Circuit Sensor
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 less than 12 V between 500
and 2000 RPM, or is less than 12.5 V above 2000
RPM, the EMM:
Stores service code 26
EMM LED 1: ON (Running)
Engine Monitor LOW BATTERY display: ON