SystemCheck CIRCUIT TESTS
Evinrude E-TEC 25–30 hp models only provide warning for a “LOW OIL” condition.
Check the condition of the warning system and associated wiring and connections. Test the engine monitor regularly and anytime you suspect an alert situation has been missed.
The instrument harness must be connected to the outboard before performing the following tests. Refer to the Engine Wiring diagram and the MWS Instrument Wiring diagram in the back of this manual.
IMPORTANT: Use jumper wires made with the appropriate terminals to test the warning circuits.
Gauge Self-Test Check
Turn the key switch to ON with the outboard NOT running. The gauge warning lights for NO OIL, WATER TEMP, CHECK ENGINE, and LOW OIL must all light at once, then turn off in sequence, and the warning horn must sound for one-half second.
If the gauge lights do not turn on, turn the key switch OFF. Disconnect the gauge 8-pin connector from the back of the gauge and turn the key switch ON. Test for battery voltage between instrument harness terminal 1 (purple wire) and terminal 2 (black wire).
- Test adapter(s)
- Connector, SystemCheck gauge
- If battery voltage is present, replace the gauge.
- If there is no battery voltage, check that 12 V is present at terminal “B” of the key switch. Check condition of the instrument harness, key switch, and connections.
If the lights worked, but the warning horn did not sound for one-half second, turn the key switch OFF. Disconnect the warning horn 2-pin connector. Substitute a known good warning horn. Turn the key switch ON.
- If the substitute horn beeps, the original horn is defective and must be replaced.
- If the substitute horn does not beep, check for battery voltage between instrument harness 2 pin connector, terminal 2 (purple wire) and ground with the key switch ON. Also, check the tan/blue wire for continuity between pin 8 of the 8-pin connector and pin 1 of the 2-pin connector.
- If battery voltage is present at the purple wire and the tan/blue wire has continuity between two connectors, replace SystemCheck the gauge.
- Purple wire
- Tan/blue wire
Turn the key switch OFF and reconnect all disconnected circuits.
LOW OIL Circuit Test
Turn the key switch ON. Using a jumper wire, connect tan/black wire (pin 4) of the engine harness connector to a clean engine ground. The LOW OIL light should turn on after 40 seconds.
If the LOW OIL light does not turn on after connecting the terminal to ground, test circuit for continuity.
Turn the key switch OFF and reconnect all disconnected circuits.
