Chart A-1: Ignition Enable CKT
WARNING: This page is about a different car, the 1988 Pontiac Bonneville. However, it is still accessible from the selected car via links, so may be relevant.
Ignition enable circuit energizes ECBM to perform self- diagnosis and initialize system. Battery voltage is supplied through 5-amp brake fuse to ECB M pin No. 2. Ground circuit is at ABS ground junction, located on left fender rail, at EC