Circuit Description
WARNING: This page is about a different car, the 2000 Isuzu Rodeo and 2000 Isuzu Amigo. However, it is still accessible from the selected car via links, so may be relevant.
PCM monitors unexpected PCM reset. This does not turn on MIL, but does store DTC P1625. This indicates the clock, or COP (Computer Operating Properly) has reset.