Home Forums Cars Alternator에 문제가 있는 건가요? Alternator에 문제가 있는 건가요? Home Forums Forums Cars Alternator에 문제가 있는 건가요? EditDelete rolling 173.***.34.66 2020-09-2715:23:34 Higher than 15 volts indicates a FAULT in the CHARGING SYSTEM’S VOLTAGE REGULATOR or RELATED CIRCUITS. If it’s substantially excessive, this can cause ELECTRICAL SYSTEM and/or BATTERY DAMAGE. Under the Hood: What the voltmeter’s reading is telling you