1998 Johnson Evinrude "EC" 90, 115 SPL Service Manual, P/N 520209, Page 72Get this manual
Test VRO Warning Signals Test "LOW OIL" Signal
1Remove Torx assembly screws and lift oil pickup assembly out of oil tank2Connect the outboard battery cables to battery
3Turn the key switch ONThe OMC System Checkengine monitor will go through its self-test With the pickup assembly out of the oil, the System Check gauge "LOW OIL" light should turn ON after the self-test, and the warning horn should sound for 10 seconds Ifthe light does notturn ON and warning horn sound, test the "LOW OIL" circuitRefer to OMC System Check Engine Monitor, Section 74Reinstall the oil pickup assembly in the oil tank With the oil tank over full, turn the key switch ONThe "LOW OIL" light should not turn back ON after the self-testTest "NO OIL" Signal 1Connect shop tank with 50: fueloil mixture to the outboard fuel inlet fitting
2Carefully remove the oil supply hose from the VROoil inlet fitting3Start the outboard and run at 1500 RPM in gear