Sensor Tests
All senso r circu its a re dependent on wiring and connections, EMM supplied current (5 V), and sensor resist ance. The supplied current flows through the wiring circuit and sensor be fore returning to the EMM.
IMPORTANT: Use Evinrude Diagnostics sof tware 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 multimeter to measure sensor resistance between the yellow a nd white wires. The complete circuit can b e tested by measuring between pins 6 and 7 of the EMM J1-A connector.
| Sensor Resistance |
|---|
| 560 Ω ± 10% @ 77°F (25°C) |
002286
- CPS
The CPS is mounted to the 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).
006527
- CPS gap
Throttle Position Sensor (TPS) Test
Use Evinrude Diagnostics software to monitor TPS voltage while the outboard is running. Voltage should change evenly as sensor lever is moved.
Remove the electrical connector from the throttle position sensor.
Use a digital multimeter to measure sensor resistance.
| Sensor Resistance between “A” and “B” |
|---|
| 3000 to 7000 Ω @ 77°F (25°C) |
| ensor Resistance between “A” and “C” |
|---|
| 4000 to 8000 Ω @ 77°F (25°C) |
002289
- TPS
Connect red meter lea d to terminal “A” and black meter lead to terminal “C.” Rotate the sensor lever through it s range of travel. Resistance reading must change evenly as the sensor lever is moved.
Connect red meter lead on terminal “B” and black meter lea d 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 multimeter 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) |
006612
- Engine temperature sensor
Air Temperature Sensor (AT) Test
Remove the electrical connector from the air temperature sensor.
Use a digital multimeter 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) |
006613
- AT sensor
