Alternator: Testing and Inspection

Checking Alternator







Test requirements:
- Correct connections on charged battery
- Correct connections on alternator and starter motor
- Good ground connection between engine and body
- Tightened drive belt

Oscillogram For Fault-Free Alternator:

If the charge indicator lamp goes out while the engine is running but the control voltage is not reached, you must replace the voltage regulator.The oscillogram corresponds to the adjacent illustration.