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Home >> Lincoln >> 2002 >> Navigator 4WD >> Repair and Diagnosis >> Steering >> Steering Column >> Steering System-General Information >> Diagnosis And Testing >> Steering System >> Symptom Chart

Symptom Chart

SYMPTOM CHART

Condition Possible Sources Action
  • No communication with the air suspension control module
  • CJB Fuse 4 (15A), 6 (5A), 20 (5A).
  • Circuitry.
  • Air suspension control module.
  • No communication with the electronic variable orifice control module
  • CJB Fuse 5 (15A).
  • Circuitry.
  • EVO control module.
  • Unable to enter self-test - with air suspension
  • Air suspension control module.
  • Unable to enter self-test - without air suspension
  • EVO control module.
  • Steering does not vary with vehicle speed
  • Output shaft speed (OSS) sensor.
  • Circuitry.
  • EVO control module or air suspension control module.
  • Steering does not vary with increased wheel rotation (s).
  • Power steering pump.
  • Power steering hose
  • Engine stalls with high wheel rotation
  • Powertrain control module (PCM).
  • Steering system noise
  • Low fluid level.
  • Fluid aeration.
  • Steering gear.
  • Power steering pump.
  • Loose or damaged steering linkage.
  • Loose or damaged suspension component(s).
  • Steering column.
  • Steering column boot bearing.
  • Intermediate shaft.
  • Loose dash boot seal.
  • Steering is very difficult/very easy
  • Seized intermediate shaft U-joints.
  • Damaged, fractured steering column bearing(s).
  • Steering gear.
  • Power steering pump.
  • Power steering hoses.
  • Binding dash boot seal.
  • Excessive steering wheel play
  • Steering gear.
  • Steering column.
  • Steering column intermediate shaft.
  • Steering linkage.
  • Ball joints.
  • Strut bearing plate (if applicable).
  • Steering system drift/pull/wander
  • Tire pressure.
  • Wheel alignment.
  • Steering gear.
  • Unevenly loaded vehicle.
  • Steering column intermediate shaft.
  • Frame alignment.
  • Feedback
  • Loose, worn or damaged tie-rod.
  • Loose, worn or damaged tie-rod ends.
  • Loose or damaged steering gear insulators or bolts.
  • INSTALL new steering gear insulators or bolts if necessary, or TIGHTEN the bolts as needed.
  • Loose lower steering column shaft U-joint bolts.
  • Loose suspension bushings, fasteners, ball joints, or strut bearing plate (if applicable).
  • Worn or damaged steering column bearing(s).
  • Poor returnability/sticky steering
  • Binding lower steering column shaft U-joints.
  • Loose, worn or damaged front wheel knuckle tie-rod.
  • Loose, worn or damaged tie-rod ends.
  • Suspension components.
  • Binding steering column bearing(s).
  • Binding dash boot seal.
  • Shimmy
  • Loose, worn or damaged tie-rod end.
  • Loose, worn or damaged tie-rod.
  • Suspension components.
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