Powertrain Control Module
WARNING: This page is about a different car, the 2004 Acura 3.5RL, 2003 Acura 3.5RL, 2003 Acura 3.2TL, and 2003 Acura 3.2CL. However, it is still accessible from the selected car via links, so may be relevant.
See MALFUNCTION INDICATOR LIGHT (MIL) under DIAGNOSTIC CIRCUIT CHECK in appropriate SELF-DIAGNOSTICS article.