I don't have experience with the SJ, '14-'18, but I do with the SG, '03-'08. If the seats are removed, the SRS - supplemental restraint system diagnostics will fail, so the airbag light will be on. I'm under the assumption the airbags will not deploy when there is a SRS diagnostic failure.
► Warning! - disconnect the battery before disconnecting or reconnecting any connectors associated with the SRS system, they are usually yellow in color.
I have removed the passenger seat to haul long lengths of lumber. The airbag light was lit & I assumed the SRS system was inoperative.
Once I reinstalled the passenger seat, the SRS diagnostics passed & the airbag light went out.