Generator Terminals

Fig 1: Identifying Generator Terminals

Courtesy of VOLVO CARS CORPORATION

Generator (GEN) terminals, 5 cylinder engine: 

1. Screw terminal #1. B+ to the battery via the starter motor
2. Upper terminal #1. Not used
3. Center terminal #2. To the engine control module (ECM)
4. Lower terminal #3. Not used.

Generator (GEN) terminals, 4 cylinder engine: 

1. Screw terminal #1. B+ to the battery via the starter motor
2. Upper terminal #1. To the engine control module (ECM)
3. Center terminal #2. To the engine control module (ECM)
4. Lower terminal #3. Reference voltage from the battery.