How To Test Alternator With Power Probe. Look for obvious problems such as a loose or broken alternator belt low electrolyte levels a dirty or wet battery top corroded or swollen cables corroded terminals or battery posts loose hold-down clamps loose cable terminals or a leaking or damaged battery case. If its below that charge the battery with a battery charger before you conduct the test again.
Gently touch the test light probe to a known power source we use the battery positive is this example but any known power source such as a fuse or positive battery cable will work. Connect the negative lead of the power probe to the batterys negative terminal. Look for obvious problems such as a loose or broken alternator belt low electrolyte levels a dirty or wet battery top corroded or swollen cables corroded terminals or battery posts loose hold-down clamps loose cable terminals or a leaking or damaged battery case.
The battery voltage should be about 125 volts.
When selecting a charge test in the EZ Diagnostics section a QR code will display. Remove the batterys terminal cover and attach the positive red lead of the power probe to the batterys positive terminal. Suppose you dont have good access to your alternator. The Power Probe PP read ground and then I powered the PP when the starter cranked and.
