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After the test is finished, the tester displays the effective
charging volts, ripple test result and charging test result.
NOTE: If no increase in rpm is detected, it is the fault of
alternator regulator or the connection with the battery
has failed. Tester will try 3 times to detect, if still failed, it
will skip the increase rpm detect and the test result
displays "No Volt Output".
See below
:
Check the connection between alternator and battery, then retest.
Charging Test Result:
1.
Charging Volt: Normal
Charging system shows the generator output normal, no problem detected.
2.
Charging Volt: Low
Charging volt of the charging system is low.
Check drive belt of the alternator to see whether it is slipping or has run off.
Check the connection between alternator and battery.
If both of the drive belt and the connection are in good condition, follow the
manufacturer's suggestion to eliminate alternator fault.
3.
Charging Volt: High
Alternator output volt is high.
Since most of the vehicle alternators use a internal regulator, the alternator
assembly has to be replaced.(Some old style cars are using external
regulator, then directly replace the regulator.)
The normal high volt of the voltage regulator is maximum 14.7±0.5V.If
charging volt is too high, it will overcharge the battery. Therefore the battery
life will be shortened and troubles will be caused.
4.
No Volt Output:
No alternator volt output is detected. Check the alternator connection cable
and the belt whether they are in a sound condition.
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 faulty diode.
Loaded 14.16V
Unloaded 14.39V
Ripple 15mV
Charging Normal
Cranking Test
