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Home >> Lincoln >> 2009 >> Navigator 4WD >> Repair and Diagnosis >> Accessories & Equipment >> Cruise Control Systems >> Cruise Control System - Speed Control >> Diagnosis And Testing >> Speed Control >> Symptom Chart
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Symptom Chart

SYMPTOM CHART

Condition Possible Sources Action
  • The speed control is inoperative
  • Wiring, terminals or connectors
  • PCM not configured for speed control
  • Stoplamp switch
  • Speed control deactivator switch (integral to the stoplamp switch)
  • Speed control switches
  • Digital Transmission Range (TR) sensor
  • Vehicle speed signal
  • PCM
  • ABS module
  • Park brake
  • The speed control indicator lamp is never/always on
  • Wiring, terminals or connectors
  • Instrument Cluster (IC)
  • PCM
  • The speed control switches do not operate correctly
  • Wiring, terminals or connectors
  • Speed control switches
  • Clockspring
  • PCM
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