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Home >> Volvo >> 1998 >> V70 Base, Automatic >> Repair and Diagnosis >> Electrical >> Charging Systems >> Generator & Regulator >> On-Vehicle Testing >> Output Test

Output Test

  1. Ensure connections at battery, generator, and starter are clean and tight. Ensure generator, engine and body are properly grounded. Ensure generator drive belt is tight and in good condition.
  2. Connect ammeter following manufacturer's instructions. Connect voltmeter leads to battery terminals. Run engine to 2000 RPM. Adjust carbon pile on tester until voltmeter reads 12 volts. Generator output should be 49-55 amps (55-amp generator), 63-75 amps (75-amp generator), 71-80 amps (80-amp generator), 81-120 amps (120-amp generator). If generator output is low, replace generator.
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