
NOTE: If no increase RPM detected, it may be the fault of generator
regulator or connection with battery that has failed. The tester will try 3
times to further detect, if it still fails, it will skip the increase RPM detect
and the test result displays "No Volt Output".
Check the connection between alternator and battery, then retest.
Charging Test Result:
1. Charging 1. Charging Volt: Normal
The alternator output normal, no problem detected.
2. Charging Volt: Low
Check drive belt of the alternator whether slip or running off. Check the
connection between alternator and battery is normal or not. If both of the
drive belt and the connection are in good condition, follow the
manufacturer's suggestion to troubleshoot the alternator fault.
3. Charging 3. Charging Volt: High
Since most of the vehicle alternators are using internal voltage regulators,
the entire alternator assembly has to be replaced. (Some old style cars
are using external voltage regulators, then only replace the regulator.)
The normal high voltage of the voltage regulator is maximum 14.7 ± 0.5V.
If charging voltage is too high, it will overcharge the battery and the
battery life will be shortened.
4. No 4. No Volt Output:
No generator volt output is detected. Check the generator connection
cable, the drive belt of generator and engine whether normal or not.
5. Diode Test:
Through the test of charging current ripple, tester will find out whether
the diode is normal or not. When ripple volt is too high, it proves at least
one diode is damaged. Check and replace the diode.