Load Test

Voltmeter:

1. Turn off all lamps and electrical components.
2. Place the transmission in park or neutral and apply the parking brake.
3. Make sure the battery is fully charged.
4. With the engine running, turn the heater or air conditioner blower motor on at high speed and headlamps on high beam.
5. Increase the engine speed to approximately 2000 rpm. The voltmeter should indicate a minimum of 0.5 volt above the base voltage. If not, perform the under voltage test. Under Voltage Test
6. If the above tests indicate proper voltage readings, the charging system is operating normally.