What Is a Multimeter? A multimeter is a tool that measures electrical properties like resistance, voltage, and current. It is used to test electrical components such as diodes and capacitors.

The unit of measure for the diode test is [volts, dc]. To perform a diode test using a benchtop multimeter, set the multimeter to the diode test mode by pressing the button with the diode symbol.

This video covers the essential steps to properly test a car's alternator and diagnose common alternator issues. The guide ...