Get the manufacturer repair manuals...for the specifications and technical procedures.
Answering "How can you diagnose a 1998 Honda accord without an OBD scanner?"
No, it will not.
Anything newer than 1996 is OBD II
OBD II
OBD II port should be under the dash on the drivers side.
Should be OBD I, OBD II is 1996 and newer
The obd II connector is under the dash on the driver side.The obd II connector is under the dash on the driver side.
Only OBD-II cars use a scan tool that plugs into the OBD-II port. OBD-II did not come out until 1996. Furthurmore, to my knowledge, the 2nd generation rx7's didn't use any form of OBD.
not all 1995 vehicle's have OBD II, since OBD II is meant for all 1996 + vehicles. But check the emission decal under your hood, at the top tip. Though If you are lucky enough to be OBD II compliant, all OBD II senors are inside the vehicle under the dash (steering wheel).
No OBD II only reads 96 models to current
All new Avanza (TAM/Indonesian) has OBD II. I have tested using elm327 v1.5.
If by "OBD" you mean on-board diagnostics (i.e., OBD II), the vehicle you describe probably does not have OBD II. OBD II became mandatory starting in 1996. If it does have OBD II, the location of the connector varies in Hondas. It might be near the hood release lever, or under the steering column, or even near the gear shift lever.