SENSOR 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 EMM.
IMPORTANT: Use Evinrude Diagnostics_ soft ware to monitor sensor circuit voltages or values.
Crankshaft Position Sensor (CPS) Test
Use the Evinrude Diagnostics_ software CPS Sync and engine RPM displays to confirm a valid CPS signal while the outboard is cranking or running. An RPM display higher than zero indicates a CPS signal to the EMM.
Disconnect the crankshaft position sensor.
Use a digital multi meter to measure sensor resistance between the yellow and white wires. The complete circuit can be tested by measuring between pins 6 and 7 of the EMM J1-A connector.
| Sensor Resistance |
|---|
| 560 Ω ± 10% @ 77°F (25°C) |
- CPS Connector\
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).
- CPS gap
Throttle Position Sensor (TPS) Test
Use Evinrude Diagnostics_ software to monitor TPS voltage while the outboard is running. Volt age should change evenly as sensor lever is moved.
Remove the electrical connector from the throttle position sensor.
Use a digital multi meter to measure sensor resistance.
| Sensor Resistance between “A” and “B” |
|---|
| 3000 to 7000 Ω @ 77°F (25°C) |
| Sensor Resistance between “A” and “C” |
|---|
| 4000 to 8000 Ω @ 77°F (25°C) |
1.TPS
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. 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
Remove the electrical connector from the engine temperature sensor.
Use a digital multi meter to measure sensor resistance.
| Engine Temperature Sensor Resistance |
|---|
| 680 Ω ± 5% @ 212°F (100°C) |
| 10000 Ω ± 1% @ 77°F (25°C) |
| 32654 Ω ± 2.5% @ 32°F (0°C) |
- Engine temperature sensor
Air Temperature Sensor (AT) Test
Remove the electrical connector from the air temperature sensor.
Use a digital multi meter to measure sensor resistance.
| AT Sensor Resistance |
|---|
| 680 Ω ± 5.25% @ 212°F (100°C) |
| 10000 Ω ± 1.5% @ 77°F (25°C) |
| 32654 Ω ± 3.0% @ 32°F (0°C) |
- AT sensor
