Ground Check
WARNING: This page is about a different car, the 1990 Ford Probe and 1989 Ford Probe. However, it is still accessible from the selected car via links, so may be relevant.
Disconnect hydraulic actuation assembly. Using VOM at 2-pin motor connector, measure resistance between Black wire and ground. If resistance is less than 5 ohms, service Red/Yellow wire between ABS fail-safe relay and hydraulic actuation assembly. If resistance is greater than 5 ohms, service Black wire to ground.