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Home >> Lincoln >> 2003 >> Aviator AWD >> Repair and Diagnosis >> Electrical >> Charging Systems >> Battery & Charging System >> Diagnosis And Testing >> Charging System >> Symptom Chart

Symptom Chart

SYMPTOM CHART

Condition Possible Sources Action
The battery is discharged or battery voltage is low
  • Circuitry.
  • High key-off current drain(s).
  • Battery.
  • Generator.
 Go To PINPOINT TEST A .
The charging system warning indicator is ON with the engine running (the charging system voltage does not increase)
  • Circuitry.
  • Generator.
 Go To PINPOINT TEST B .
The charging system overcharges (battery voltage is greater than 15.5 volts)
  • Circuitry.
  • Generator.
 Go To PINPOINT TEST C .
The charging system warning indicator is ON with the engine running and the battery increases voltage
  • Circuitry.
  • Instrument cluster.
  • Generator.
 Go To PINPOINT TEST D .
The charging system warning indicator is OFF with the ignition switch in the RUN position and the engine off
  • Bulb.
  • Circuitry.
  • Instrument cluster.
  • Generator.
 Go To PINPOINT TEST E .
The charging system warning indicator flickers or is intermittent
  • Fuse link(s).
  • Circuitry.
  • Generator.
 Go To PINPOINT TEST F .
The generator is noisy
  • Bolts or brackets.
  • Drive belt.
  • Generator.
  • Generator pulley.
 Go To PINPOINT TEST G .
Radio interference
  • Generator.
  • Circuitry.
  • Entertainment system.
 Go To PINPOINT TEST H .
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