Check what I’m carrying; I have no idea (6,2)
I believe the answer is:
search me
I believe this clue is a double definition.
'check what i'm carrying' is the first definition.
(literally search me)
'i have no idea' is the second definition.
(I've seen this in another clue)
(Other definitions for search me that I've seen before include "Wearing cashmere? - I don't know, go ahead and frisk" , "Church reciting book" , "I don't know (colloq.)" , "I certainly don't know" , "Who knows? 14 [NOT-I] !" .)