My Haunted House has an all in one Pi 80. When I run the coil test, all the coils fire as expected except COIL 2 gives Err 2. According to the book, solenoid 2 is the upkicker from the lower playfield (which makes sense - because that's when the game malfunctioned). Err 2 means "No current is flooding through the coil, although the coil is energized".

I know the up kicker coil is good, because when I close the contact that triggers the coil, it fires. The contact is closed by a gate relay (A-20558). The book says the resistance should be 156 ohms. It measured a bit low (115 ohms). So I replaced it. But I get the same error.

Any ideas?