Undercharged Battery

To check generator when battery is undercharged, use following procedure.




1. Connect voltmeter and ammeter as shown in figure.

NOTE: Use fully charged battery.




2. Run engine from idling up to 2,000 rpm and read meters.






NOTE:
- Turn off switches of all accessories (wiper, heater etc.).
- Consideration should be taken that voltage will differ somewhat with regulator case temperature as shown in figure.

3. If voltage is higher that standard value, check ground of brush. If brush ground is correct, replace IC regulator.
4. If voltage is in standard value, run engine at 2,000 rpm and turn on head light and heater motor.
Measure current and if less than 20 A, repair generator.