2004 ABS fault indicated but no codes.

In 2004 ABS was an add on option. We have been having an ABS fault indication every time it rains, clears after a couple dry days but not this time. In the past, apply brakes hard activated the ABS as if one of the sensors is bad. Local shop attempted to read the ABS fault codes while I was in getting the struts replaced, but no code is set. Seems as if the ABS has been deactivated but there is no code. I checked both ABS fuses. Anyone Is there a reset?

Its been through at least 5 ignition cycles.

Thanks

I'll post this in the brake section too.

By the way, this is what the service manual says: