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Home >> Ford >> 1995 >> Aerostar Van Window, Standard >> Repair and Diagnosis >> Accessories & Equipment >> Cruise Control Systems >> Testing >> Speed Control Does Not Disengage When Brakes Are Applied

Speed Control Does Not Disengage When Brakes Are Applied

  1. Step on brake pedal. If stoplights operate properly, go to next step. See STOPLIGHT SWITCH TEST  . Repair stoplight circuit if necessary.
  2. Test vacuum dump valve. See VACUUM DUMP VALVE TEST  . If vacuum dump valve is okay, go to next step. Replace vacuum dump valve as necessary.
  3. Test servo. See SERVO TEST  . If servo is okay, go to next step. Replace servo if defective.
  4. Temporarily substitute known good amplifier, then retest system. If amplifier is okay, recheck all electrical and vacuum connections.
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