[JohnnieB]

Beeping 3-2 is the error code for a wielded solenoid, but low voltage on J1 Pin-5 will also set that error flag.

What the controller is doing is comparing the voltage between the controller's B- and B+ terminals vs the voltage between the controller's B- terminal and J1 Pin-5 (Bottom row -far left - plug is mounted upside down - see attached).

When the solenoid contacts are open, the voltage on the B+ terminal should be less than the voltage on Pin-5 and when the solenoid contacts are closed, they should be the same.

What voltages do you get?

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Not sure why you are getting a beeped error code if the key is off, as it should be while charging.