Service Manual 5007213_Evinrude E-TEC 115-200 HP Electrical And Ignition [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.

1. CPS Connector

Sensor Resistance

560 Ω ± 10% @ 77°F (25°C)

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).

1. CPS gap

Throttle Position Sensor (TPS) Test

TPS voltage can be monitored using the diagnostic 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.

1. CPS gap

Connect red meter lead to terminal “A” and black meter lead to terminal “B.”

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

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.

Engine Temperature Sensor Test

Use an ohmmeter to measure resistance.

Engine Temperature Sensor Resistance

9000 to 11000 Ω @ 77°F (25°C)

1. Engine temperature sensor (2)

Air Temperature Sensor (AT) Test

Use an ohmmeter to measure resistance.

AT Sensor Resistance

9000 to 11000 Ω @ 77°F (25°C)

1. AT sensor

The capacitor should charge when you use an ohmmeter on the high ohms scale with the proper polarity. The resistance will increase until it goes to (nearly) infinity. If the capacitor is shorted, then it will never charge. If it is open, the resistance will be infinite immediately and won't change. If the polarity of the probes is reversed, it will not charge properly either. Determine the polarity of your meter and mark it. Black is usually negative with VOMs, for example. Confirm with a marked diode. A low reading across a good diode indicates that the positive lead is on the anode (triangle) and negative lead is on the cathode (bar).