58
ENGINE MANAGEMENT MODULE (EMM)
EXTERNAL SENSORS
EXTERNAL SENSORS
Sensor inp uts and inte rnal EMM contro llers are
used to control outboard operation. Use Evinrude
Diagnostics software to troubleshoot the sensors.
Refer to t he EMM Servic e Code Chart at the
back of this manual for a comp lete list of all
engine fault codes.
The EMM provides a 5 V DC signal for sensor cir-
cuits. It mon itors all se nsor vo ltage inp uts and
compares them to pred etermined accept able
ranges. Inputs tha t fall outside of the accept able
range create service codes.
Air Temperature Sensor
The air t emperature sensor mo nitors the air te m-
perature at the throttle body.
If the A T senso r volt age is ou t of t he expected
range, or the sensor or circuit fails, the EMM:
Engine Temperature Sensor
Monitors cylinder head temperature.
If cylinder h ead temperatu re exceeds 212° F
(100° C) below 2000 RPM, the EMM:
If cylinder h ead temperatu re exceeds 185°F
(85°C) above 2000 RPM for 60 se conds, the
EMM:
If cylinder he ad temperature exceeds 194°F
(90°C) above 2000 RPM for 3 seconds, the EMM:
If cylinder he ad temperature exceeds 248°F
(120°C) for 3 seconds, the EMM:
The outboard will not restart until the engine tem-
perature returns to normal. Refer to SHUTDOWN
MODE on p. 63.
If sensor values are le ss than -13 °F (-25°C), or
greater than 329°F (165°C), the EMM:
If sensor values are below -4°F (-20°C), the EMM:
If cylinder head does not rea ch operating temper-
ature (122°F / 50°C belo w 1000 RPM) in 1 0 min-
utes, the EMM:
Stores service code 47, 48, or 49
EMM LED 3: OFF (Cranking)
EMM LED 3: ON (Running)
Activates S.A.F.E.
Stores service code 40 (port sensor)
Stores service code 70 (stbd sensor)
EMM LED 4: ON (Running)
Engine Monitor TEMP display: ON
Stores service code 43 (port sensor)
Stores service code 69 (stbd sensor)
EMM LED 4: ON (Running)
Engine Monitor TEMP display: ON
Activates S.A.F.E.
Activates SHUTDOWN
Stores service code 31
EMM LED 4: FLASHING
Engine Monitor TEMP display: FLASHING
Stores service code 41 (port sensor)
Stores service code 67 (stbd sensor)
EMM LED 3: OFF (Cranking)
EMM LED 3: ON (Running)
Stores service code 42 (port sensor)
Stores service code 68 (stbd sensor)
EMM LED 3: OFF (Cranking)
EMM LED 3: ON (Running)
Stores service code 58 (port sensor)
Stores service code 59 (stbd sensor)
EMM LED 3: OFF (Cranking)
EMM LED 3: ON (Running)
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