Symptom Chart
WARNING: This page is about a different car, the 2008 Ford RV Cutaway, 2008 Ford Econoline, 2008 Ford E450 Super Duty, and 2008 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
Symptom Chart
| Condition |
Possible Sources |
Action |
- The battery is discharged or battery voltage is low
|
- High key-off current drain(s)
- Vehicle grounds
- Battery cables
- Circuit high resistance
- Battery
- Generator
|
|
- The charging system warning indicator is on with the engine running (the charging system voltage does not increase)
|
- Circuitry
- Voltage regulator
- Generator
|
|
- The charging system overcharges (battery voltage is greater than 15.5 volts)
|
- Circuitry
- Voltage regulator
- Generator
|
|
- The charging system warning indicator is on with the engine running and the battery increases voltage
|
- Circuitry
- Instrument cluster (IC)
- Voltage regulator
- Generator
|
|
- The charging system warning indicator is off with the ignition switch in the RUN position and the engine off
|
- Bulb
- Circuitry
- IC
- Voltage regulator
- Generator
|
|
- The charging system warning indicator flickers or is intermittent
|
- Corroded terminal(s)
- Fuse(s)
- Circuitry
- Voltage regulator
- Generator
|
|
|
|
- Accessory drive belt
- Loose bolts/brackets
- Generator/pulley
|
|
|
|
- Generator
- In-vehicle entertainment system
|
|