Section 11-05: Steering Column Switches
1996 F-150, F-250, F-350, F-Super Duty, F-Super Duty Motorhome and Bronco Workshop Manual
DIAGNOSIS AND TESTING

Symptom Chart

Ignition Switch
ConditionPossible SourceAction
  • Ignition Switch Inoperative
  • Fuse.
  • Ignition switch.
  • Circuit.
  • Battery discharged.
  • No Power in ACC Position
  • Ignition switch.
  • Circuit.
  • No Power in RUN Position
  • Ignition switch.
  • Circuit.
  • No Power in START Position
  • Ignition switch.
  • Circuit.
  • Multi-Function Switch Does Not Operate
  • Fuse.
 
  • Circuits.
  • Multi-function switch.
  • Turn Signal Switch Inoperative
  • Fuse.
  • Circuit.
  • Turn signal switch.
  • Windshield Wiper Switch Inoperative
  • Fuse.
  • Circuit.
  • Windshield wiper switch.
  • Headlamp Switch Inoperative
  • Fuse.
  • Circuit.
  • Headlamp switch.
  • Hazard Flasher Switch Inoperative
  • Fuse.
  • Circuit.
  • Hazard flasher switch.
  • Flash-to-Pass Switch Inoperative
  • Fuse.
  • Circuit.
  • Flash-to-pass switch.
Ignition Switch Mechanical Diagnosis
ConditionPossible SourceAction
  • High Key Efforts
  • Damaged ignition switch lock cylinder.
  • LUBRICATE ignition switch lock cylinder and CHECK for burrs on key. If effort is still excessive, REPLACE ignition switch lock cylinder.
 
  • Steering column shrouds misaligned.
  • ALIGN steering column shroud to fit properly.
 
  • Casting/actuator binds, sticks, grabs, with key rotation.
  • If improper fit between casting and actuator exists, REPLACE parts.
  • If burrs are found on actuator surfaces which contact the casting during key travel, gently FILE these surfaces until smooth. At no time attempt to file teeth of actuator.
  • If serious burrs are found on casting surface which contact actuator during key travel, REPLACE the casting.
  • If actuator teeth show excessive wear or are burred, REPLACE actuator.
  • ASSEMBLE lock housing taking care to thoroughly LUBE all internal components and CHECK key efforts. If still high, REPLACE lock housing.
 
  • Damaged ignition switch.
  • REPLACE the ignition switch.