Service Manual 200-300 HP E-TEC Engine Managment Module [External Sensors]

Supplies the EMM with barometric pressure reading 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 service code 45

If the BP sensor reads greater than 105 KPa, the EMM:

Stores service code 46

The exhaust pressure sensor monitors exhaust pressure during all running conditions to compensate 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 service code 87
EMM LED 3: OFF (Cranking)
EMM LED 3: ON (Running)

If exhaust pressure is less than 40 in. water, the EMM:

Stores service code 88
EMM LED 3: OFF (Cranking)
EMM LED 3: ON (Running)

If exhaust pressure is greater than 80 in. water, the EMM:

Stores service code 89
EMM LED 3: OFF (Cranking)
EMM LED 3: ON (Running)

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.

The air temperature sensor monitors the air temperature 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
EMM LED 3: OFF (Cranking)
EMM LED 3: ON (Running)

Monitors cylinder head temperature.

If cylinder head temperature exceeds 212° F (100° C) below 2000 RPM for 3 seconds, the EMM:

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

If cylinder head temperature exceeds 185°F (85°C) above 2000 RPM for 60 seconds, the EMM:

Stores service code 43 (port sensor)
Stores service code 69 (stbd sensor)
EMM LED 4: ON (Running)
Engine Monitor TEMP display: ON

If cylinder head temperature exceeds 194°F (90°C) above 2000 RPM for 3 seconds, the EMM:

Activates S.A.F.E.

If cylinder head temperature exceeds 248°F (120°C) for 3 seconds, the EMM:

Stores service code 31
EMM LED 4: FLASHING
Engine Monitor TEMP display: FLASHING

The outboard will not restart until the engine temperature returns to normal. Refer to SHUTDOWN MODE on p. 102.

If sensor values are less than -13°F (-25°C), or greater than 329°F (165°C), the EMM:

Stores service code 67 (stbd sensor)
EMM LED 3: OFF (Cranking)
EMM LED 3: ON (Running)

If sensor values are below -4°F (-20°C), the EMM:

Stores service code 68 (stbd sensor)
EMM LED 3: OFF (Cranking)
EMM LED 3: ON (Running)

If cylinder head does not reach operating temperature (122°F / 50°C below 1000 RPM) in 10 minutes, the EMM:

Stores service code 58 (port sensor)
Stores service code 59 (stbd sensor)
EMM LED 3: OFF (Cranking)
EMM LED 3: ON (Running)

If the switch is stuck in the closed position, the EMM: Stores service code 28 EMM LED 3: ON (Running)

The oil pressure sensor monitors oil pressure in the oil distribution manifold.

If the sensor does not detect pressure for 150 pump cycles, the EMM:

Activates S.A.F.E.
Stores service code 38
EMM LED 4: ON (Running)
Engine Monitor NO OIL display: ON

If outboard has been run for more than 5 hours with NO OIL faults (codes 34 & 38), the EMM:

Activates SHUTDOWN
Stores a service code 33
EMM LED 4: FLASHING
Engine Monitor NO OIL display: FLASHING

IMPORTANT: The outboard will restart for one minute intervals until problem is resolved and code is cleared. To clear code use the diagnostic software program.

If the sensor reads out of the expected range, or the sensor or circuit fails, the EMM:

Stores service code 71
EMM LED 3: ON (Running)

If the sensor circuit indicates below expected range (<.4 V), the EMM:

Stores service code 72
EMM LED 3: ON (Running)

If the sensor circuit indicates above expected range (> 4.6 V), the EMM: Stores service code 73

Stores service code 73
EMM LED 3: ON (Running)

The throttle position sensor receives a voltage signal from the EMM. As the throttle lever is rotated, the EMM receives a return voltage signal through a second wire. This signal increases as the TPS lever is advanced. A third wire provides a ground circuit back to the EMM.

If TPS voltage is greater than 0.65 V when the key is turned to ON, the EMM:

Creates service code 11

If the outboard is started, the code is stored.

If the key ON voltage is greater than 0.78 V when the engine is started, speed is limited to idle.

If code 11 is present as both a Hard Fault and a Stored Fault, refer to Control Cable Installation on p. 53.

If the TPS or TPS circuit fails (less than 0.14 volts or greater than 4.92 volts), the EMM:

Stores service code 12
Limits engine RPM to IDLE
EMM LED 3: OFF (Cranking)
EMM LED 3: ON (Running)
Engine Monitor CHECK ENGINE display: ON

IMPORTANT: When a TPS circuit fault has been detected, the outboard will not accelerate above idle speed. To reset, stop the outboard and correct the fault.

If the TPS circuit reads below 0.2 volts, the EMM:

Stores service code 13
EMM LED 3: OFF (Cranking)
EMM LED 3: ON (Running)
Engine Monitor CHECK ENGINE display: ON

If the TPS circuit reads above 4.85 volts, the EMM:

Stores service code 14
EMM LED 3: OFF (Cranking)
EMM LED 3: ON (Running)
Engine Monitor CHECK ENGINE display: ON

The CPS is a magnetic device. It is mounted on the reed plate, next to the flywheel.

Ribs spaced on the flywheel mark crankshaft position. As the ribs pass the magnetic field of the CPS, an AC voltage signal is generated. The EMM uses this signal to identify crankshaft position and speed, generate a tachometer signal, and control fuel and ignition timing.

If the sensor is damaged or the signal is intermit tent (10 instances), the EMM:

Stores service code 16
EMM LED 2: OFF (Cranking)
EMM LED 3: ON (Running)

Approximate air gap between CPS and flywheel encoder ribs is .073 (1.85 mm).

Use the Evinrude Diagnostics software Monitor screen to check CPS operation. The software should show an RPM reading while the outboard is cranking. If the CPS or its circuit fails, no RPM reading will appear and the outboard cannot run.

Knock sensors (one per cylinder head) detect the presence of knock (pre-ignition or detonation) dur ing the combustion cycle.

When knock is detected, the EMM temporarily increases fuel flow and retards ignition timing for the affected cylinder. Up to four levels of protection are provided.

If knock continues, the EMM:

Activates S.A.F.E.
Stores service code 1-6 (code indicates cyl)
EMM LED 3: ON (Running)
Engine Monitor CHECK ENGINE display: ON

If the sensor circuit is OPEN, the EMM:

Stores service code 7 (port sensor)
Stores service code 8 (stbd sensor)
EMM LED 3: ON (Running)
Engine Monitor CHECK ENGINE display: ON