Symptom Chart
WARNING: This page is about a different car, the 2007 Ford Pickup, 2007 Ford F550 Super Duty, 2007 Ford F450 Super Duty, and 2007 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
Symptom Chart
| Condition |
Possible Sources |
Action |
- The charging system warning indicator is on with the engine running (the charging system voltage does not increase)
|
- Circuitry
- B+ circuit fusible links
- Upper generator
- Lower generator
- Powertrain control module (PCM)
|
|
- The charging system warning indicator is off with the ignition switch in the RUN position and the engine off
|
- Circuitry
- Upper generator
- Lower generator
- Instrument cluster (IC)
- Powertrain control module (PCM)
|
|
- The charging system warning indicator is on with the engine running and the battery increases voltage
|
- Circuitry
- IC
- Upper generator
- Lower generator
- Powertrain control module (PCM)
|
|
- The charging system warning indicator operates correctly and the battery voltage does not increase
|
- B+ circuit fusible links
- Circuitry
- Upper generator
- Lower generator
|
|
- The battery is discharged or battery voltage is low
|
- High key-off loads
- Circuitry
- B+ circuit fusible links
- Upper generator
- Lower generator
|
|
- The charging system warning indicator flickers or is intermittent
|
- Circuitry
- Upper generator
- Lower generator
- IC
- Powertrain control module (PCM)
|
|
- The charging system overcharges (battery voltage is greater than 15.5 volts)
|
- A circuit fuse
- Circuitry
- Upper generator
- Lower generator
|
|
- Battery leakage or damage
|
- Battery
- Circuitry
- Upper generator
- Lower generator
|
|
- The voltage gauge reads high or low
|
- Upper generator
- Lower generator
- IC
|
|
- The generator(s) is noisy
|
- Loose bolts/brackets
- Drive belt
- Upper generator
- Lower generator
|
|
|
|
- Upper generator
- Lower generator
- Wiring/routing
- In-vehicle entertainment system
|
|
- Dual generator upper fault detected (P0620)
|
- Circuitry
- B+ circuit fusible links
- Upper generator
|
|
- Dual generator lower fault detected (P1148)
|
- Circuitry
- B+ circuit fusible links
- Lower generator
|
|
- Dual generator lower circuit fault detected (P1149)
|
- Circuitry
- Lower generator
|
|
- Dual generator battery lamp circuit fault detected (P0623)
|
|
|