There seems to be a discrepancy between the PicoZed 7015/7030 Schematic rev. C04 and the PicoZed 7015/7030 User's Guide v1.4 in relation to the default position of JT2.
Page 20 of the User's Guide states that JT2 is populated with a 1K resistor in the 1-2 position, pulling PUDC_B down by default.
A note on sheet 6 of the schematics says that the default is a 1K resistor in the 2-3 position, pulling PUDC_B high to VCCO_34.
Which is it?