I don't think 1990 Hondas had airbags. According to:
they were added to the station wagon in 1991 and the sedan in 1992.
Prior to that, Honda used a motorized seat belt system.
Itinerant astronomy teacher
I know that Chilton books say to disable airbags for certain things even
though some things typically do not require it. The Chilton book for a '90
Accord covers 1984-95, so the airbag instructions would apply to '92 and
newer ('91 and newer for the wagon).
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