Three problems related to brake antilock control unit/module have been reported for the 1997 Ford F-150. The most recently reported issues are listed below.
Brake sensor failed causing loss of brakes. Mjs.
When pressing the brake pedal the pedal gets hard and goes to the floor. Took to the dealer and the left sensor on the rotor was bad. Three months later, both sensors were bad.
Abs wheel sensor failed.