139
ELECTRICAL AND IGNITION
SENSOR RESISTANCE TESTS
6
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
between the yellow and white wires.
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
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.
Use an ohmmeter to measure sensor resistance.
Disconnect the battery cables at the battery.
Remove the electrical connector from the TPS.
STEP 1
Connect red meter lead to terminal “A” and black
meter lead to terminal “B.”
1. CPS Connector 005431
Sensor Resistance
560 Ω ± 10% @ 77°F (25°C)
1
1. CPS gap 005321
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 005430
1
1
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