Cadillac CTS (2009) - fuse box diagram - Auto Genius Sep 25, 2016Cadillac CTS (2009) – fuse box diagram Year of production: 2009 Underhood Fuse Block (CTS) The underhood fuse block is located on the passenger side of the engine compartment. Fuses Usage A/C CLTCH Air Conditioning Clutch ABS Antilock Braking System (ABS) AFS Adaptive Forward Lighting System AIRBAG IGN Airbag Switch AWD All-Wheel Drive BCM 1 Body Control Cadillac STS (2008 - 2009) - fuse box diagram - Auto Genius Oct 19, 2016Cadillac STS (2008 – 2009) – fuse box diagram. Year of production: 2008, 2009. Underhood Fuse Block. The underhood fuse block is located in the front of the engine compartment on the passenger’s side of the vehicle.