While a professional test is recommended??? you can perform a basic voltage test at home. With the engine running??? use a multimeter to measure the voltage across the battery terminals. A healthy alternator should produce a voltage between 13.5 and 14.5 volts. If the voltage is significantly lower or higher??? it could indicate a problem with the alternator or voltage regulator.
While a professional test is recommended??? you can perform a basic voltage test at home. With the engine running??? use a multimeter to measure the voltage across the battery terminals. A healthy alternator should produce a voltage between 13.5 and 14.5 volts. If the voltage is significantly lower or higher??? it could indicate a problem with the alternator or voltage regulator.
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