Section 5 (Anti-Lock Brake System): Testing: Notes
WARNING: This page is about a different car, the 1989 Ford Ranger, 1989 Ford Pickup, 1989 Ford Cab & Chassis, 1989 Ford Bronco II, and 1989 Ford Bronco. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
ALWAYS disconnect positive battery cable before measuring resistance on RABS system. Always check connectors for dirty or corroded terminals before condemning circuit.
Rear Anti-Lock Brake System has a self-test capability. There are 2 warning lights, located on instrument panel, to inform driver of malfunction. Red warning light indicates low fluid level, parking brake on or low vacuum (diesel models). When control module detects a malfunction, the anti-lock brake system becomes inoperative and the Yellow warning light will come on. Both lights should come on for approximately 2 seconds when ignition is turned on or when cranking engine.