You use the same self diagnostic method as the OBD1 Civic/Prelude guys use. Most call it the paperclip method.
how to check codes for 96 accord
The procedure is the same as the thread linked above, however the placement of your 2 pin SCS connector is behind/above the side kick panel in the passenger footwell.
Where this is a trans error the D4 light should blink, if both the D4 and check engine light are blinking then you could have seperate codes from the TCU and ECU.