Without Scan Tool
WARNING: This page is about a different car, the 1998 Acura 2.5TL. However, it is still accessible from the selected car via links, so may be relevant.
To clear PCM memory without using a scan tool, turn ignition off. Remove SCS service connector. Remove BACK-UP RADIO fuse No. 39 (10-amp) from underhood fuse/relay box for 10 seconds.