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Home >> Lincoln >> 2010 >> Navigator 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1539 (Interior Lighting System) >> Diagnosis And Testing >> Interior Lighting >> Symptom Chart

Symptom Chart

WARNING: This page is about a different car, the 2010 Ford Focus. However, it is still accessible from the selected car via links, so may be relevant.
SYMPTOM CHART

Condition Possible Sources Action
  • The courtesy lamps do not illuminate with a door open
  • Wiring, terminals or connectors
  • Door ajar switch (part of the door latch)
  • Smart Junction Box (SJB)
  • The courtesy lamps do not illuminate from the instrument panel dimmer switch
  • Wiring, terminals or connectors
  • Instrument panel dimmer switch
  • SJB 
  • The interior courtesy lamp(s) are inoperative
  • Fuse
  • Wiring, terminals or connectors
  • Interior lamp
  • SJB 
  • The luggage compartment lamp is inoperative
  • Wiring, terminals or connectors
  • Luggage compartment lid latch
  • Luggage compartment lamp
  • SJB 
  • The courtesy lamps stay on continuously
  • Wiring, terminals or connectors
  • Instrument panel dimmer switch
  • Door ajar switch (part of the door latch)
  • SJB 
  • The demand lamp(s) are inoperative
  • Wiring, terminals or connectors
  • Interior/map lamps
  • SJB 
  • The battery saver does not deactivate after time-out
  • Wiring, terminals or connectors
  • SJB 
  • The ambient lighting is inoperative
  • Fuse
  • Wiring, terminals or connectors
  • Ambient lighting switch
  • Ambient lighting harness
  • Ambient lighting module
  • SJB 
  • The ambient lighting does not cycle through all color combinations
  • Wiring, terminals or connectors
  • Ambient lighting harness
  • Ambient lighting switch
  • Ambient lighting module