Chart A-1: Ignition Enable CKT
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 1988 Oldsmobile Ninety-Eight, 1988 Oldsmobile Delta 88, 1987 Oldsmobile Ninety-Eight, 1987 Oldsmobile Delta 88, and 1986 Oldsmobile Ninety-Eight. 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 EBCM pin no. 1.ANTI-LOCK warning light will stay on if EBCM does not receive ignition enable input.