Charging System: Description and Operation

Generator




The generator has a built-in regulator which provides diagnostic functions in addition to a voltage regulating function as follows:
1. Voltage regulation The on-off operation of transistor connects and disconnects the field current circuit, providing a constant level of output voltage.
2. Diagnosis warning When any of the following problems occur, the charge light illuminates.
1. No voltage generation Brush wear exceeds specified wear limits, field coil circuit is broken, etc.
2. Excessive output Output voltage is greater than 16 volts (approx.)
3. Terminal B disconnection Harness is disconnected from generator terminal B.
4. Terminal S disconnection
Harness is disconnected from generator terminal S. In this case, voltage is slightly greater than specified regulated voltage; however, voltage regulation is still controlled and the battery is prevented from becoming overcharged.