Status of the CI circuit paths A and B. Crossed cables
  are also noted. The field applies only to the CI.
  Possible displays are as follows:

    #-#     -  Paths A and B are bad.
    A-#     -  Path A is good.
    #-B     -  Path B is good.
    A-B     -  Paths A and B are good.
    CROSSED - Cables are crossed.