Throttle Position Sensor; Crankshaft Position Sensor - BRP E250DHLSCS Service Manual

Throttle Position Sensor

The throttle position sensor receives a voltage sig-
nal 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
When a TPS circuit fault has
IMPORTANT:
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
ENGINE MANAGEMENT MODULE (EMM)

Crankshaft Position Sensor

The CPS is a magnetic device. It is mounted on
the reed plate, next to the flywheel.
Ribs spaced on the flywheel mark crankshaft posi-
tion. As the ribs pass the magnetic field of the
CPS, an AC voltage signal is generated. The
EMM uses this signal to identify crankshaft posi-
tion 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 3: 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.
EXTERNAL SENSORS
97
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