The Cadillac DTS, produced from 2005 to 2011, was a full-size luxury sedan renowned for its comfort, performance, and advanced features. Its electrical system, including the fuse box and relay components, played a crucial role in its operation and reliability.
The fuse box in the Cadillac DTS housed multiple fuses designed to protect specific electrical circuits throughout the vehicle. These circuits powered essential components such as the engine control module, lighting systems, infotainment features, climate control, and more. Fuses were crucial as they would interrupt the circuit in case of an electrical overload or short circuit, preventing damage to associated systems.
Relays in the Cadillac DTS served as electrically operated switches that controlled high-current circuits. They enabled precise activation and deactivation of functions like the starter motor, fuel pump, air conditioning compressor, and power windows or seats. Efficient management of power distribution by relays contributed to the vehicle’s overall performance and reliability.
Regular inspection and maintenance of the fuse box and relays were essential to ensure the Cadillac DTS operated smoothly. This included checking fuses for signs of wear or damage, ensuring relay connections were secure, and promptly addressing any electrical issues that arose. Proper care of these components helped maintain the vehicle’s electrical integrity, enhancing safety and driving satisfaction for owners of the Cadillac DTS 2005-2011.
MUST READ: DYI – How to Check Car Fuses?
(2005-2011) Cadillac DTS fuse box and relay with Diagram
WARNING
- Never replace a fuse with one that has a higher amperage rating.
- A fuse with a too-high amperage could damage the electrical part and cause a fire.
- On no account should fuses be repaired (e.g. patched up with tin foil or wire) as this may cause serious damage elsewhere in the electrical circuit or cause a fire.
- If a fuse blows repeatedly, do not keep replacing it. Instead, have the cause for the repeated short circuit or overload tracked and fixed.
- Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
Cadillac DTS 2005-2011 fuse assignment
- Cigar lighter / power outlet fuses in the Cadillac DTS are the fuses №F14 (Auxiliary Power Outlets) and F23 (Auxiliary Power Outlet, Cigarette Lighter, Console) in the Rear Underseat Fuse Block (2005-2007) or fuses №. 26 (Cigarette Lighter, Auxiliary Power Outlet) and №. 31 (Accessory Power Outlets) in the Rear Underseat Fuse Block (2008-2011).
Year of production: 2005, 2006, 2007, 2008, 2009, 2010, 2011
Engine compartment
Passenger compartment
The fuse box is located under the rear seat.
Fuse box diagrams
2005, 2006, 2007
Engine compartment
Assignment of the fuses and relays in the engine compartment (2005-2007)
| № | Description |
|---|---|
| Fuses | |
| F1 | Spare |
| F2 | Driver’s Side Low-Beam |
| F3 | Passenger’s Side Low-Beam |
| F4 | Airbag Ignition |
| F5 | Engine Control Module |
| F6 | Transaxle Ignition |
| F7 | Spare |
| F8 | Spare |
| F9 | Spare |
| F10 | High-Beam Headlamp |
| F11 | High-Beam Headlamp |
| F12 | Windshield Washer Pump |
| F13 | Spare |
| F14 | Climate Controls, Instrument Panel Cluster |
| F15 | Spare |
| F16 | Fog Lamps |
| F17 | Horn |
| F18 | Windshield Wiper |
| F19 | Driver’s Side Corner Lamp |
| F20 | Passenger’s Side Corner Lamp |
| F21 | Oxygen Sensor |
| F22 | Powertrain |
| F23 | Engine Control Module (ECM), Crank |
| F24 | Injector Coil |
| F25 | Injector Coil |
| F26 | Air Conditioning |
| F27 | Air Solenoid |
| F28 | Engine Control Module, Transaxle Control Module (ECM/TCM) |
| F29 | Spare |
| F30 | Spare |
| F31 | Spare |
| F32 | Spare |
| J-Case Fuses | |
| JC1 | Heated Windshield Washer |
| JC2 | Cooling Fan 1 |
| JC3 | Spare |
| JC4 | Crank |
| JC5 | Cooling Fan 2 |
| JC6 | Anti-lock Brake System 2 |
| JC7 | Anti-lock Brake System 1 |
| JC8 | Air Pump |
| Relays | |
| R1 | Cooling Fan 1 |
| R2 | Cooling Fan |
| R3 | Crank |
| R4 | Powertrain |
| R5 | Spare |
| R6 | Run/Crank |
| R7 | Cooling Fan 2 |
| R8 | Windshield Wiper |
| R9 | Air Pump |
| R10 | Windshield Wiper High |
| R11 | Air Conditioning |
| R12 | Air Solenoid |
Rear Underseat Fuse Block
Assignment of the fuses and relays in the Rear Underseat Fuse Block (2005-2007)
| № | Description |
|---|---|
| Fuses | |
| F1 | Amplifier |
| F2 | Navigation (Option) |
| F3 | Interior Lamps |
| F4 | Courtesy/Passenger Side Front Turn Signal |
| F5 | Canister Vent |
| F6 | Electronic Suspension Control (Option) |
| F7 | Automatic Leveling Control Module (Option) |
| F8 | Rear Seat Lumbar (Option) |
| F9 | Door Unlatch (Option) |
| F10 | Switch Dimmer |
| F11 | Fuel Pump |
| F12 | Body Control Module Logic |
| F13 | Airbag |
| F14 | Auxiliary Power Outlets |
| F15 | Driver’s Side Turn Signal |
| F16 | Passenger Side Rear Turn Signal |
| F17 | Not Used |
| F18 | Center High-Mounted Stoplamp, Back-up Lamps |
| F19 | Rear Door Locks |
| F20 | Stoplamp (Option) |
| F21 | Radio |
| F22 | OnStar (Option) |
| F23 | Auxiliary Power Outlet, Cigarette Lighter, Console |
| F24 | Driver Door Module |
| F25 | Passenger Door Module |
| F26 | Trunk Release (Option) |
| F27 | Heated/Cooled Seats (Option) |
| F28 | Engine Control Module, Transmission Control Module (ECM/TCM) |
| F29 | Regulated Voltage Control Sense |
| F30 | Not Used |
| F31 | Instrument Panel Harness Module |
| F32 | Rear Heated Seats (Option) |
| F33 | Not Used |
| F34 | Steering Wheel Illumination |
| F35 | Body Harness Module |
| F36 | Memory Seat Module Logic, Right Front Massage (Option) |
| F37 | Object Detection Sensor |
| F38 | Sunroof |
| F40 | Shifter Solenoid (Option) |
| F41 | Retained Accessory Power, Miscellaneous |
| F42 | Driver’s Side Park Lamp |
| F43 | Passenger’s Side Park Lamp |
| F44 | Heated Steering Wheel (Option) |
| F45 | Rear Climate Control |
| F46 | Not Used |
| F47 | Heated/Cooled Seats, Ignition 3 (Option) |
| F48 | Ignition Switch |
| F49 | Not Used |
| J-Case Fuse | |
| JC1 | Climate Control Fan |
| JC2 | Rear Defogger (Option) |
| JC3 | Automatic Leveling Control/Compressor |
| Circuit Breakers | |
| CB1 | Front Passenger’s Seat, Memory Seat Module |
| CB2 | Driver’s Power Seat, Memory Seat Module |
| CB3 | Door Module, Power Windows |
| CB4 | Memory Seat Module, Tilt/Telescoping Steering Wheel (Option) |
| Resistor | |
| F39 | Terminating Resistor |
| Relays | |
| R1 | Retained Accessory Power |
| R2 | Park Lamps |
| R3 | Run (Option) |
| R4 | Park Lamps (Option) |
| R5 | Front Heating, Ventilation, Air Conditioning Fan |
| R6 | Trunk Release |
| R7 | Fuel Pump |
| R8 | Door Unlatch, License Plate Lamp (Option) |
| R9 | Door Lock |
| R10 | Door Unlock |
| R11 | Overhead Lamps (Option) |
| R12 | Stoplamps (Option) |
| R13 | Not Used |
| R14 | Rear Defogger (Option) |
| R15 | Electronic Leveling Control Compressor |
2008, 2009, 2010, 2011
Engine compartment
Assignment of the fuses and relays in the engine compartment (2008-2011)
| № | Description |
|---|---|
| F1 | Engine Control Module (ECM), Crank |
| F2 | Fuel Injectors Odd |
| F3 | Fuel Injectors Even |
| F4 | Air Conditioning Clutch |
| F5 | Air Injection Reactor (AIR) Solenoid |
| F6 | Oxygen Sensor |
| F7 | Emission Device |
| F8 | Transmission, Ignition 1 |
| F9 | Engine Control Module (ECM), Powertrain Control Module (PCM) |
| F10 | Climate Control System, Instrument Panel Cluster Ignition 1 |
| F11 | Airbag System |
| F12 | Horn |
| F13 | Windshield Wiper |
| F14 | Fog Lamps |
| F15 | Right High-Beam Headlamp |
| F16 | Left High-Beam Headlamp |
| F17 | Left Low-Beam Headlamp |
| F18 | Right Low-Beam Headlamp |
| F19 | Windshield Washer Pump Motor |
| F20 | Left Front Cornering Lamp |
| F21 | Right Front Cornering Lamp |
| F22 | Air Pump (J-Case) |
| F23 | Antilock Brake System (ABS) (J-Case) |
| F24 | Starter (J-Case) |
| F25 | Antilock Brake System (ABS) Motor (J-Case) |
| F26 | Cooling Fan 2 (J-Case) |
| F27 | Cooling Fan 1 (J-Case) |
| F28 | Windshield Washer Heater (J-Case) |
| Relays | |
| 29 | Powertrain |
| 30 | Starter |
| 31 | Cooling Fan 2 |
| 32 | Cooling Fan 3 |
| 33 | Cooling Fan 1 |
| 34 | Air Conditioning Clutch |
| 35 | Air Injection Reactor (AIR) Solenoid |
| 36 | Ignition |
| 37 | Air Pump |
Rear Underseat Fuse Block
Assignment of the fuses and relays in the Rear Underseat Block (2008-2011)
| № | Description |
|---|---|
| Fuses | |
| 1 | Fuel Pump |
| 2 | Left Park Lamp |
| 3 | Run 3 – Rear Blower |
| 4 | Right Park Lamp |
| 5 | Engine Control Module (ECM)/Transmission Control Module (TCM) |
| 6 | Memory Module |
| 7 | Right Park Lamp (optional) |
| 8 | Steering Wheel Illumination |
| 9 | Front Heated/Cooled Seat Module |
| 10 | Run 2 – Heated/Cooled Seats, Heated Washer Fluid |
| 11 | Rear Heated Seat Module |
| 12 | RPA Module |
| 13 | PASS-Key III System |
| 14 | Unlock/Lock Module |
| 15 | Magnetic Ride Control |
| 16 | Daytime Running Lamps (DRL) (optional) |
| 17 | Sunroof |
| 18 | Body Control Module (BCM) Dim |
| 19 | Body Control Module (BCM) |
| 20 | Run 1 – Heated Steering Wheel |
| 21 | Ignition Switch |
| 22 | Driver Door Module |
| 23 | Rear Lumbar |
| 24 | Electronic Leveling Control Module |
| 25 | Body Control Module (Left Turn Signal) |
| 26 | Cigarette Lighter, Auxiliary Power Outlet |
| 27 | Navigation |
| 28 | Retained Accessory Power 1 (RAP) |
| 29 | Passenger Door Module |
| 30 | Sensing and Diagnostic Module |
| 31 | Accessory Power Outlets |
| 32 | Body Control Module (BCM) (Inadvertent) |
| 33 | Retained Accessory Power 2 (RAP) |
| 34 | Canister Vent Solenoid |
| 35 | Body Control Module (Courtesy) |
| 36 | Body Control Module (Right Turn Signal) |
| 37 | Trunk Release |
| 38 | Amplifier, Radio |
| 39 | Body Control Module (CHMSL) |
| 40 | Body Control Module |
| 41 | Stoplamp (optional) |
| 42 | OnStar Module |
| 43 | Body Modules |
| 44 | Radio |
| 45 | Door Unlatch (optional) |
| 46 | Rear Defogger (J-Case) |
| 47 | Electronic Leveling Control Compressor (J-Case) |
| 48 | Blower (J-Case) (optional) |
| 49 | Blower (J-Case) (optional) |
| Resistor | |
| 50 | Terminating Resistor |
| Circuit Breakers | |
| 54 | Right Front Seat |
| 55 | Left Front Power Seat |
| 56 | Power Windows |
| 57 | Power Tilt Steering Wheel |
| Relays | |
| 51 | Front Blower (optional) |
| 52 | Rear Defogger |
| 53 | Electronic Leveling Control Compressor |
| 58 | Park Lamps |
| 59 | Fuel Pump |
| 60 | License Plate Lamp (optional) |
| 61 | Right Park Lamp (optional) |
| 62 | Unlock |
| 63 | Lock |
| 64 | Run |
| 65 | Daytime Running Lamps (DRL) (optional) |
| 66 | Door Unlatch (optional) |
| 67 | Trunk Release |
| 68 | Stoplamp (optional) |
| 69 | Overhead Lamps (optional) |
| 70 | Retained Accessory Power (RAP) |
Conclusion
For owners and enthusiasts of classic Cadillac DTS 2005-2011, understanding the fuse box and relay systems is essential for vehicle maintenance. Regular inspection and maintenance of these components helped ensure the vehicle’s longevity and reliability, preserving its status as a symbol of Cadillac’s craftsmanship and innovation in the automotive industry during that era.
