Generator (Gen) Design

Fig 1: Identifying Generator Components

Courtesy of VOLVO CARS CORPORATION

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 (with, in certain cases, freewheel)

Generator terminals 

Fig 2: Identifying Generator Terminals

Courtesy of VOLVO CARS CORPORATION

Generator (GEN) terminals: 

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

For 6 cylinder engines the generator's connectors are axially positioned, straight out from the rear end.