4.3gl SX Trim Problem

[Jprevat]

I have a 98 Sunbird with the old style trim pump. It worked when I trimmed it down to run it on the muffs today and when I tried to trim back up or down nothing happened. I had no clicking of relays and no trim motor at all.

No breakers were tripped and I have power at the plug on top of the engine and at the board mounted on the pump. I was able to trim it back up by jumping across the board but now I'm stuck.

I'm not seeing any voltage at the plug coming to or from the side mount throttle and trim switch. The plug has three wires a blue, green, and red. Should any of these be hot?

Now that I have confused myself completely any help would be amazing.

 

[cnotecherry]

Yes the red should be hot the toggle switch transfers the 12v to either green or blue witch then switches on one of the solenoids for up and down to the pump motor if you're red wire is not hot then that's your problem check the three prong connector at the pump sometime a pin can break off if that seems fine then check for voltage at the pump side of the connector if you have voltage there I would say broken red wire

 

[Jprevat]

Thank you for the insight. I'll see what I can find this afternoon and put up the reaults.