Diagnostic Aids

WARNING: This page is about a different car, the 1988 Buick Riviera and 1988 Buick Reatta. However, it is still accessible from the selected car via links, so may be relevant.

Failure of EBCM to receive an ignition enable input will prevent EBCM from becoming initialized. The ANTI-LOCK light will remain on continuously and no ABS operation will be available. This condition may be caused by a blown EBCM fuse, a short to ground on circuit No. 39 or an open in circuits No. 39 or 3.

Fig 1: Ignition Enable Circuit Schematic

Fig 2: Flow Chart B1, Ignition Enable Circuit

Fig 3: Flow Chart B1, Ignition Enable Circuit