Power Circuits
WARNING: This page is about a different car, the 1993 Isuzu Pickup and 1993 Isuzu Amigo. However, it is still accessible from the selected car via links, so may be relevant.
ECM should always have battery power to retain memory. Using a voltmeter, check for battery voltage at Red/White wire of ECM connector terminal C46-1. See Figure . Terminal is powered by 10-amp fuse No. 3 (dome light) in interior fuse box. Interior fuse box is located on left side of dash, behind panel.