127
ELECTRICAL AND IGNITION
IGNITION SYSTEM TESTS
6
IGNITION SYSTEM
TESTS
Sensor Resistance Tests
All sensor circuits are dependent on wiring and
connections,
EMM
supplied current (5 V), and
sensor resistance. The supplied current flows
through the wiring circuit and sensor before
returning to the appropriate circuit in the
EMM
.
IMPORTANT:
Use the
Evinrude
Diagnostics
Software program to monitor sensor circuit volt-
ages or values.
Crankshaft Position Sensor (CPS) Test
Disconnect the battery cables at the battery. Use
an ohmmeter to measure sensor resistance.
The CPS is mounted to throttle body housing and
requires no adjustment. Air gap or clearance to
flywheel is fixed at approximately 0.073 in.
(1.85 mm). The acceptable clearance is 0.036 to
0.110 in. (1 to 2.8 mm).
Throttle Position Sensor (TPS) Test
Disconnect the battery cables at the battery.
Remove the electrical connector from the TPS.
Use an ohmmeter to measure sensor resistance.
IMPORTANT:
DO NOT lubricate TPS to throttle
shaft surface.
STEP 1
Connect red meter lead to terminal “A” and black
meter lead to terminal “B.”
STEP 2
Connect red meter lead to terminal “A” and black
meter lead to terminal “C.” Rotate the sensor lever
through its range of travel. Resistance reading
must change evenly as the sensor lever is moved.
STEP 3
Connect red meter lead on terminal “B” and black
meter lead to terminal “C.” Rotate the sensor
lever. Resistance reading must change evenly as
the sensor lever is moved.
TPS voltage can be monitored using the diagnos-
tic program. Use the engine
Monitor
screen to
observe voltage while outboard is running. Volt-
age should change evenly as sensor lever is
moved.
1.
CPS
002286
Sensor Resistance
560
Ω
± 10% @ 77°F (25°C)
CPS
002312
1
Sensor Resistance (between “A” and “B”)
> 3000
Ω
@ 77°F (25°C)
Sensor Resistance (between “A” and “C”)
> 4000
Ω
@ 77°F (25°C)
1.
TPS
002289
1
Содержание E-tec 75 HP
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