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Home >> Lincoln >> 2003 >> Aviator AWD >> Repair and Diagnosis >> Accessories & Equipment >> Cruise Control Systems >> Vehicle Speed Control >> Diagnosis And Testing >> Speed Control >> Symptom Chart >> Notes
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Symptom Chart: Notes

SYMPTOM CHART

Condition Possible Sources Action
No communication with the powertrain control module (PCM)
  • Battery junction box (BJB) fuse(s):
    • 11 (40A)
    • 40 (15A).
  • Circuitry.
  • PCM.
REFER to SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE .
The speed control switch is inoperative-no DTCs
  • Speed control switch.
INSTALL a new speed control switch. REFER to SPEED CONTROL SWITCH .
The speed control is inoperative-no DTCs
  • Circuitry.
  • Parking brake switch.
  • Digital transmission range (TR) sensor.
  • Low battery voltage.
Go To PINPOINT TEST F .
The speed control indicator lamp is always on
  • Circuitry.
  • Instrument cluster.
  • Powertrain control module (PCM).
Go To PINPOINT TEST G .