Cadillac CTS (2014 – 2015) – fuse box diagram
Year of production: 2014, 2015
Engine compartment fuse block
The underhood fuse block is on the passenger side of the engine compartment.
| Fuse | Usage |
| 1 | Not Used |
| 2 | Not Used |
| 3* | Not Used |
| 4 | Body Control Module 6 |
| 5 | Not Used |
| 6 | Driver Power Seat |
| 7 | Not Used |
| 8* | Headlamp Washer Relay |
| 9 | Not Used |
| 10 | Not Used |
| 11 | Not Used |
| 12 | Not Used |
| 13 | Passenger Power Seat |
| 14 | Body Control Module 5 |
| 15 | Front Wiper |
| 16 | Not Used |
| 17* | Headlamp Washer |
| 18 | Not Used |
| 19 | Antilock Brake System Pump |
| 20 | Antilock Brake System Valve |
| 21* | AIR Pump |
| 22 | MSB Driver |
| 23 | Wiper Control Relay |
| 24 | Wiper Speed Relay |
| 25 | Engine Control Module Relay |
| 26* | AIR Pump Relay |
| 27 | Spare/Heated Seat 2 |
| 28 | Body Control Module 1/Spare |
| 29* | AFS AHL/Pedestrian Protection |
| 30 | Passenger Window Switch |
| 31 | Body Control Module 7 |
| 32 | Sunroof |
| 33 | Not Used |
| 34 | AOS Display/MIL Ignition |
| 35 | Rear Electrical Center Ignition |
| 36 | Spare PT Fuse |
| 37 | Oxygen Sensor |
| 38 | Ignition Coils/Injectors |
| 39 | Ignition Coils/Injectors/Spare |
| 40 | Engine Control Module |
| 41 | Fuel Heater |
| 42* | AIR Solenoid Relay |
| 43 | Washer |
| 44 | Not Used |
| 45 | Front Washer Relay |
| 46 | Not Used |
| 47 | Instrument Panel Body Ignition |
| 48 | Fuel System Control Module Ignition |
| 49 | Heated Steering Wheel |
| 50* | Steering Column Lock |
| 51* | Coolant Pump |
| 52* | Coolant Pump Relay |
| 53 | Air Conditioning Compressor Clutch |
| 54* | AIR Solenoid |
| 55 | Transmission Control Module/Spare |
| 56* | Headlamp Low Relay |
| 57 | Headlamp High Relay |
| 58 | Starter |
| 59 | Starter Relay |
| 60 | Run/Crank Relay |
| 61* | Vacuum Pump Relay |
| 62 | Air Conditioning Control Relay |
| 63* | Adaptive Headlamp Leveling |
| 64* | Left High Intensity Discharge Headlamp |
| 65* | Right High Intensity Discharge Headlamp |
| 66 | Headlamp High Left/Right |
| 67 | Horn |
| 68 | Horn Relay |
| 69 | Cooling Fan |
| 70 | Aero Shutter |
| 71 | Transmission Control Module Ignition |
| 72 | Engine Control Module Ignition |
| 73* | Brake Vacuum Pump |
| 74 | Not Used |
| * Optional | |
Instrument Panel Fuse Block
The instrument panel fuse block is in the end of the driver side of the instrument panel.
| Mini Fuses | Usage |
| 2 | Motorized Cupholder |
| 3 | Electric Steering Column Lock |
| 4 | Data Link Connector |
| 5 | Heater, Ventilation, and Air Conditioning Control |
| 6 | Tilt and Telescoping Steering Column |
| 8 | Spare |
| 9 | Glove Box Release |
| 10 | Shunt |
| 11 | Body Control Module 1 |
| 12 | Body Control Module 5 |
| 13 | Spare |
| 14 | Spare |
| 15 | Spare |
| 16 | Spare |
| 17 | Spare |
| 18 | Spare |
| 19 | Spare |
| 20 | Spare |
| 21 | Spare |
| 22 | Sensing Diagnostic Module/Automatic Occupant Sensing |
| 23 | Radio/DVD/Heater, Ventilation, and Air Conditioning |
| 24 | Display |
| 25 | Heated Steering Wheel |
| 26 | Wireless Charger |
| 27 | Steering Wheel Switches |
| 28 | Spare |
| 29 | Spare |
| 30 | Spare |
| J Case Fuses | Usage |
| 31 | Spare |
| 32 | Spare |
| 33 | Front Heater, Ventilation, and Air Conditioning Blower |
| Circuit Breakers | Usage |
| CB1 | Retained Accessory Power/Accessory Power Outlet Power |
| CB7 | Spare |
| Relays | Usage |
| K10 | Retained Accessory Power/Accessory |
| K605 | Logistics |
| K644 | Glove Box Release |
Rear Compartment Fuse Block
The rear compartment fuse block is behind a cover on the driver side of the rear compartment.
The vehicle may not be equipped with all of the fuses, relays, and features shown.
| Number | Usage |
| 1* | Electronic Limited Slip Differential/DC DC Transformer |
| 2 | Left Window |
| 3 | Body Control Module 8 |
| 4* | A/C Inverter |
| 5 | Passive Entry Passive Start Battery 1 |
| 6 | Body Control Module 4 |
| 7 | Heated Mirrors |
| 8 | Amplifier |
| 9 | Rear Window Defogger |
| 10 | Glass Break |
| 11* | Trailer Connector |
| 12 | OnStar (If Equipped) |
| 13 | Right Window |
| 14 | Electric Parking Brake |
| 15 | Not Used |
| 16 | Trunk Release |
| 17* | Run Relay |
| 18* | Logistics Relay |
| 19* | Logistics Fuse |
| 20 | Rear Window Defogger Relay |
| 21 | Mirror Window Module |
| 22 | Pedestrian Protection |
| 23 | Canister Vent |
| 24 | Pedestrian Protection |
| 25* | Rear Vision Camera |
| 26* | Front Ventilated Seats |
| 27* | SBZA/LDW/EOCM |
| 28* | Trailer/Sunshade |
| 29* | Rear Heated Seats |
| 30* | Semi-Active Damping System |
| 31* | Transfer Case Control Module/Electronic Limited Slip Differential |
| 32 | Theft Module/Universal Garage Door Opener/Rain Sensor |
| 33* | UPA |
| 34* | Radio/DVD |
| 35 | Not Used |
| 36* | Trailer |
| 37 | Fuel Pump/Fuel System Control Module |
| 38 | Not Used |
| 39 | Not Used |
| 40 | Not Used |
| 41 | Not Used |
| 42* | Memory Seat Module |
| 43 | Body Control Module 3 |
| 44 | Not Used |
| 45 | Battery Regulated Voltage Control |
| 46 | Engine Control Module Battery |
| 47 | Not Used |
| 48 | Not Used |
| 49* | Trailer Module |
| 50 | Door Lock Security |
| 51 | Rear Closure Release |
| 52 | Not Used |
| 53 | Not Used |
| 54 | Door Lock Security |
| 55 | Not Used |
| 56* | Fuel Door |
| * Optional | |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.