Hi everyone!

The above Nissan has no drive, no pump functions, no PS. The dash comes on and shows no codes. Battery is charged and it passes the self diagnostic tests. When I put it in a direction or depress the pedal I get a continuous chime till I reset the lever or let off the pedal. The main controller was sent out for testing and passed. Also, the customer tried another board from a sister machine with the same result, nothing lol. The board from the broken machine worked in the sister truck.

I'm half suspecting the meter panel but I'm not sure. Any ideas?

ETA: The backup alarm is working when it's shifted into reverse. I have 5 volts at the pump switches. Looks like a 5 volt reference signal. They switch to a common ground.