A/C Diode
WARNING: This page is about a different car, the 1998 Honda Prelude. However, it is still accessible from the selected car via links, so may be relevant.
Remove A/C diode. Check for continuity between terminals "A" and "B" in both directions (both polarities). See Fig 1 . Continuity should be present in one direction only. If continuity is not as specified, replace A/C diode.