Outdrive Stopped Working

[Reel Kahuna]

My son's '76 Mercruier's outdrive stopped working. We hear a click on the up button at the dash but nothing on the down button. Didn't see any fuse that the wiring connects to, appears it goes from tilt buttons directly to the trim motor that has 12volts on one lug but nothing on the other lug. Doesn't appear to have an oil reservoir. I'm familar with outboards but not on I/O. Advise as to what and how to check?

 

[Bt Doctur]

at the trim pump how many solenoids are there?

 

[Reel Kahuna]

Boat is at my son's house some 2 hrs away but my memory think it has one.

 

[Bt Doctur]

there should be a fuse on the small red wire at the pump. this supplies power for the up solenoid and the down motor circuit.solenoid clicks so there is power.
make sure both battery cable connections are clean and tight.
take a jumper from the + battery to the blue motor wire, drive should go up, then touch the green motor wire, drive should go down

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[Alumarine]

Also, it does have an oil reservoir although that's not what's causing this problem.
The oil reservoir will be located where the clicks are coming from.

 

[Reel Kahuna]

My son was able to send this pic before he went to work

 

[Bt Doctur]

Red is 12v power, Black is ground, Blue is motor up, Green is motor down. The Green motor wire at the plastic block is connected to the green wire from the control button. The Blue control wire is connected to the small lug that operates the solenoid.

 

[Reel Kahuna]

I forwarded pic to my son. Hopefully he'll know how to jump the wires, otherwise I'll have to drive over his place .
Will report findings. Thanks so much BT Doc.

 

[Reel Kahuna]

My son was able to jump the solenoid today and said that the green wire just clicked but blue didn't. Outdrived didn't lift or lower.
Comments?

 

[Bt Doctur]

jump to the motor wires, not the solenoid. you have to make sure the motor is good first, solenoid testing comes later

 

[Reel Kahuna]

Sorry for confusion. Per your instruction above, son clamped jumper wire to the positive (red) wire and the other end on the motor's Blue wire then the motor's green wire. Green clicked but Blue didn't.

 

[Reel Kahuna]

Hope I didn't offend anyone but would appreciate what son should do next as to why his outdrive trim stopped working.