I have a 1997 Champion bass boat with a 175 EFI (0G361770). Over the last month the trim-up wouldn't work occasionally when on plane (under pressure) until a slightly backed off a little. I thought it may be the trim motor and checked the fluid which was all good.
Yesterday the trim-up stopped working from the shifter/control unit. But it works fine from the engine and bow switches in both directions.
Today I switched the directional wires (blue and green) at the engine to test it. I tested it from the shifter/control unit, when I pressed the switch down it moved the motor up, when I pressed the switch up it didn't do anything.
Is the relay/solenoid bad or the switch at the shifter is bad?
Thanks for any info.