Service Manual 115-200 HP E-TEC Engine Managment Module [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 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.

Air Temperature Sensor

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:

Monitors cylinder head temperature.

If cylinder head temperature exceeds 230° F (110° C) below 3000 RPM, the EMM:

If cylinder head temperature exceeds 194° F (90° C) above 3000 RPM, the EMM:

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

The outboard will not restart until the engine temperature returns to normal. Refer to SHUTDOWN MODE on p. 115.

If sensor values are less 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 reach operating temperature (122°F / 50°C below 1000 RPM) in 10 minutes, the EMM:

The oil pressure sensor monitors oil pressure in the oil distribution manifold. If the sensor does not detect pressure for:

• V4: 100 pump cycles

• V6: 150 pump cycles the EMM:

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

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:

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

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

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:

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. 61.

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

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:

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

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 intermittent:

• Below 2000 RPM: 5 occurrences

• Above 2000 RPM: 1 occurrences the EMM:

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.

The powerhead mounted neutral switch controls a ground signal from the EMM to indicate shift linkage position when a tiller kit has been installed. This allows the EMM to provide start in gear protection. Fuel and ignition functions are turned off on tiller models if the neutral switch is not closed.

If the starter is cranked while the outboard is in gear, or if the switch fails, the EMM:

The Monitor screen of the diagnostics software displays switch position, NEUTRAL or IN GEAR. Make sure switch is operating properly.