Load Test
- Attach tachometer to engine. Start engine and turn on heater or A/C blower motor to high position. Turn headlights on high beam. Increase engine speed to 2000 RPM.
- Voltmeter should indicate a minimum increase of .5 volt more than battery voltage. If system conforms to that reading, alternator operation is normal. If voltage reading is less than specification, proceed to LOW VOLTAGE TEST.