Symptom Chart
WARNING: This page is about a different car, the 2006 Mercury Grand Marquis and 2006 Ford Crown Victoria. 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
|
- Circuitry
- High key-off current drain(s)
- Battery
- Generator
|
|
- The charging system warning indicator is on with the engine running (the charging system voltage does not increase)
|
- Generator
- Fuse
- Circuitry
- Powertrain control module (PCM)
|
|
- The charging system overcharges (battery voltage is greater than 15.5 volts)
|
- Fuse
- Generator
- Circuitry
- Powertrain control module (PCM)
|
|
- The charging system warning indicator is on with the engine running and the battery increases voltage
|
- Generator
- Instrument cluster
- Powertrain control module (PCM)
|
|
- The charging system warning indicator is off with the ignition switch in the RUN position and the engine off
|
- Instrument cluster
- Powertrain control module (PCM)
|
|
- The charging system warning indicator flickers or is intermittent
|
|
|
|
|
- Loose bolts/brackets
- Drive belt
- Generator/pulley
|
|
|
|
- Generator
- Wiring/routing
- In-vehicle entertainment system
|
|