Generators & Regulators - Testing & Specifications: Description

Volvo S80 is equipped with either a 120 or 140 amp Bosch generator. Generator generates AC current which is converted to DC current in the DC bridge. Generator has a built-in charge regulator. Accessory drive belt transfers power from crankshaft pulley to power steering pump, air conditioning (A/C) compressor and generator. Belt tension is tensioned using an automatic belt tensioner. Belt is a Poly-V-belt. Generator with charge regulator can be diagnosed through the central electronic module. When testing generator, measure voltage between generator terminal B+ and generator case. Measure voltage no less than 10 seconds after starting engine.