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No power to secondary oil pump on 2001 150hp yamaha outboard engine

K

Kountryking2014

New member
Oil not refilling primary tank on engine. Checked voltage to pump at auxiliary tank nothing present. Had power temporarily at then lost it check connections and connectors in engine compartment. Emergency switch doesn't have power to it as well. Does any one have an idea as to where the problem could lye.
 
If you don't have power to the pump, there is the problem. It is just a matter of finding out why no power. Start with the connector in the engine pan that provides power to the pump. Does the yellow wire have 12 volts on it when the key is in the ON position?

If so, then the problem is outside the motor, in the harness that runs to the oil pump.

If not, trace the yellow wire in the engine harness back to its source of key on power.

The emergency switch never has power to it. Ever.
 
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