Generator No-Load Test

Connect voltmeter positive lead to generator B+ terminal and negative lead to ground. Start and run engine at 2000 RPM with all accessories off. Read voltmeter when voltage stabilizes. Voltage should be 13-15 volts. With engine running, turn A/C (if equipped) and headlights on, and turn blower motor to high speed. Increase engine speed to 2000 RPM. Voltage should increase a minimum of .5 volt more than base voltage.