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Yes, but only at a basic level. If the diode measures low resistance in one direction, high resistance in the other, you know that it is not short-circuited. But... 1. If it's a voltage-regulator/reference (Zener) diode, you do not know whether it has the correct breakdown voltage, 2. If diode leakage is important, you have not tested for leakage and the ohmmeter test does not do this reliably, 3. Your ohmmeter test voltage is probably no more than 9 volts, so you have not tested for high-voltage breakdown, and 4. If it's a rectifier (especially a high-current diode) you have not tested its forward voltage at full load current.
A charging system test is done to check the internal voltage regulator. It can be done at any auto parts place.
with a regulator tester kohler sale one that will test most regulators
How_do_you_check_your_voltage_regurlator_on_your_motorcycle
with a kohler regulator tester
The main rule to be followed when using an ohmmeter is to have the circuit under test de energized from the power source.
Hard to do. If your Ohmmeter battery is just 1-1/2 volts, then you simply put the test leads on the diode one way, then the other way. The way that show a meter reading will have the black lead on the 'cathode', if you assume, as most do, that electrons are issued from the " - " or 'minus' side of the battery. BUT . . . if your Ohmmeter voltage is above the zener's trigger voltage, then you will get a reading both ways.
You need the test equipment and a bunch of knowhow.
To test the igniter on a 1994 Toyota Corolla remove the ignitor for the distributor. Using an ohmmeter check to see if it reads the proper voltage. If there is to little replace the unit.
With engine running, ensure system voltage is in the 13-14 volt range.
it is inside the alternater, not stand alone.
Remove and test with an ohmmeter Explain how to test with an ohmmeter?