How To Test 24v Alternator With Multimeter. Turn your ignition into ON position do not start and touch the alternator pulley with a metal object like a wrench or screwdriver. Set the range on the meter to between 20 and 30 volts so you can find the problem in your 24-volt electrical system.
PART 1- Testing the alternator voltage output with the multimeter in VOLTS DC mode. Set the range on the meter to between 20 and 30 volts so you can find the problem in your 24-volt electrical system. Check the connections at the power source.
You will learn how to check for correct voltage at the alternator and dia.
Heres how to perform the test. Any less and the alternator is not charging properly. To test your given alternator to see if it can produce 24V short the rotating field winding directly to the output and see how much voltage the alternator produces. Connect the tester cables on the multimeter to the battery poles.
