Alternator Structure, Engine B8444S

Fig 1: Identifying Generator Components

Courtesy of VOLVO CARS OF NORTH AMERICA.

The main components of the generator (GEN) consist of: 

1. Stator
2. Rotor with slip rings
3. Integrated cooling fans
4. DC bridge
5. Charge regulator
6. Pulley.

Alternator connections, engine B8444S 

Fig 2: Identifying Generator (GEN) Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Generator (GEN) terminals: 

• #A:1. B+
• #B:1. To engine control module (ECM)
• #B:2. Not used