Part and system guide
Alternator
The alternator recharges the battery and powers the electrical system once the engine is running.
What it does
Converts engine rotation into electrical output.
Failure signs
- Battery warning light
- Repeated dead battery
- Dimming lights while driving
- Burning electrical smell
- Whining noise
Maintenance notes
- Test charging voltage with the engine running.
- Inspect belt condition and tension.
- Do not assume every dead battery means a bad alternator.