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 â„–F14 (Auxiliary Power Outlets) and F23 (Auxiliary Power Outlet, Cigarette Lighter, Console) in the Rear Underseat Fuse Block (2005-2007) or fuses â„–. 26 (Cigarette Lighter, Auxiliary Power Outlet) and â„–. 31 (Accessory Power Outlets) in the Rear Underseat Fuse Block (2008-2011).

Year of production: 2005, 2006, 2007, 2008, 2009, 2010, 2011

Engine compartment

The location of the fuses in the engine compartment: Cadillac DTS (2005-2011)
The location of the fuses in the engine compartment: Cadillac DTS (2005-2011)

Passenger compartment

The location of the fuses in the passenger compartment: Cadillac DTS (2005-2011)
The location of the fuses in the passenger compartment: Cadillac DTS (2005-2011)

The fuse box is located under the rear seat.

Fuse box diagrams

2005, 2006, 2007

Engine compartment
Under-hood fuse box diagram: Cadillac DTS (2005, 2006, 2007)
Under-hood fuse box diagram: Cadillac DTS (2005, 2006, 2007)

Assignment of the fuses and relays in the engine compartment (2005-2007)

â„–Description
Fuses
F1Spare
F2Driver’s Side Low-Beam
F3Passenger’s Side Low-Beam
F4Airbag Ignition
F5Engine Control Module
F6Transaxle Ignition
F7Spare
F8Spare
F9Spare
F10High-Beam Headlamp
F11High-Beam Headlamp
F12Windshield Washer Pump
F13Spare
F14Climate Controls, Instrument Panel Cluster
F15Spare
F16Fog Lamps
F17Horn
F18Windshield Wiper
F19Driver’s Side Corner Lamp
F20Passenger’s Side Corner Lamp
F21Oxygen Sensor
F22Powertrain
F23Engine Control Module (ECM), Crank
F24Injector Coil
F25Injector Coil
F26Air Conditioning
F27Air Solenoid
F28Engine Control Module, Transaxle Control Module (ECM/TCM)
F29Spare
F30Spare
F31Spare
F32Spare
J-Case Fuses
JC1Heated Windshield Washer
JC2Cooling Fan 1
JC3Spare
JC4Crank
JC5Cooling Fan 2
JC6Anti-lock Brake System 2
JC7Anti-lock Brake System 1
JC8Air Pump
Relays
R1Cooling Fan 1
R2Cooling Fan
R3Crank
R4Powertrain
R5Spare
R6Run/Crank
R7Cooling Fan 2
R8Windshield Wiper
R9Air Pump
R10Windshield Wiper High
R11Air Conditioning
R12Air Solenoid
Rear Underseat Fuse Block
Interior fuse box diagram: Cadillac DTS (2005, 2006, 2007)
Interior fuse box diagram: Cadillac DTS (2005, 2006, 2007)

Assignment of the fuses and relays in the Rear Underseat Fuse Block (2005-2007)

â„–Description
Fuses
F1Amplifier
F2Navigation (Option)
F3Interior Lamps
F4Courtesy/Passenger Side Front Turn Signal
F5Canister Vent
F6Electronic Suspension Control (Option)
F7Automatic Leveling Control Module (Option)
F8Rear Seat Lumbar (Option)
F9Door Unlatch (Option)
F10Switch Dimmer
F11Fuel Pump
F12Body Control Module Logic
F13Airbag
F14Auxiliary Power Outlets
F15Driver’s Side Turn Signal
F16Passenger Side Rear Turn Signal
F17Not Used
F18Center High-Mounted Stoplamp, Back-up Lamps
F19Rear Door Locks
F20Stoplamp (Option)
F21Radio
F22OnStar (Option)
F23Auxiliary Power Outlet, Cigarette Lighter, Console
F24Driver Door Module
F25Passenger Door Module
F26Trunk Release (Option)
F27Heated/Cooled Seats (Option)
F28Engine Control Module, Transmission Control Module (ECM/TCM)
F29Regulated Voltage Control Sense
F30Not Used
F31Instrument Panel Harness Module
F32Rear Heated Seats (Option)
F33Not Used
F34Steering Wheel Illumination
F35Body Harness Module
F36Memory Seat Module Logic, Right Front Massage (Option)
F37Object Detection Sensor
F38Sunroof
F40Shifter Solenoid (Option)
F41Retained Accessory Power, Miscellaneous
F42Driver’s Side Park Lamp
F43Passenger’s Side Park Lamp
F44Heated Steering Wheel (Option)
F45Rear Climate Control
F46Not Used
F47Heated/Cooled Seats, Ignition 3 (Option)
F48Ignition Switch
F49Not Used
J-Case Fuse
JC1Climate Control Fan
JC2Rear Defogger (Option)
JC3Automatic Leveling Control/Compressor
Circuit Breakers
CB1Front Passenger’s Seat, Memory Seat Module
CB2Driver’s Power Seat, Memory Seat Module
CB3Door Module, Power Windows
CB4Memory Seat Module, Tilt/Telescoping Steering Wheel (Option)
Resistor
F39Terminating Resistor
Relays
R1Retained Accessory Power
R2Park Lamps
R3Run (Option)
R4Park Lamps (Option)
R5Front Heating, Ventilation, Air Conditioning Fan
R6Trunk Release
R7Fuel Pump
R8Door Unlatch, License Plate Lamp (Option)
R9Door Lock
R10Door Unlock
R11Overhead Lamps (Option)
R12Stoplamps (Option)
R13Not Used
R14Rear Defogger (Option)
R15Electronic Leveling Control Compressor

2008, 2009, 2010, 2011

Engine compartment
Under-hood fuse box diagram: Cadillac DTS (2008, 2009, 2010, 2011)
Under-hood fuse box diagram: Cadillac DTS (2008, 2009, 2010, 2011)

Assignment of the fuses and relays in the engine compartment (2008-2011)

â„–Description
F1Engine Control Module (ECM), Crank
F2Fuel Injectors Odd
F3Fuel Injectors Even
F4Air Conditioning Clutch
F5Air Injection Reactor (AIR) Solenoid
F6Oxygen Sensor
F7Emission Device
F8Transmission, Ignition 1
F9Engine Control Module (ECM), Powertrain Control Module (PCM)
F10Climate Control System, Instrument Panel Cluster Ignition 1
F11Airbag System
F12Horn
F13Windshield Wiper
F14Fog Lamps
F15Right High-Beam Headlamp
F16Left High-Beam Headlamp
F17Left Low-Beam Headlamp
F18Right Low-Beam Headlamp
F19Windshield Washer Pump Motor
F20Left Front Cornering Lamp
F21Right Front Cornering Lamp
F22Air Pump (J-Case)
F23Antilock Brake System (ABS) (J-Case)
F24Starter (J-Case)
F25Antilock Brake System (ABS) Motor (J-Case)
F26Cooling Fan 2 (J-Case)
F27Cooling Fan 1 (J-Case)
F28Windshield Washer Heater (J-Case)
Relays
29Powertrain
30Starter
31Cooling Fan 2
32Cooling Fan 3
33Cooling Fan 1
34Air Conditioning Clutch
35Air Injection Reactor (AIR) Solenoid
36Ignition
37Air Pump
Rear Underseat Fuse Block
Interior fuse box diagram: Cadillac DTS (2008, 2009, 2010, 2011)
Interior fuse box diagram: Cadillac DTS (2008, 2009, 2010, 2011)

Assignment of the fuses and relays in the Rear Underseat Block (2008-2011)

â„–Description
Fuses
1Fuel Pump
2Left Park Lamp
3Run 3 – Rear Blower
4Right Park Lamp
5Engine Control Module (ECM)/Transmission Control Module (TCM)
6Memory Module
7Right Park Lamp (optional)
8Steering Wheel Illumination
9Front Heated/Cooled Seat Module
10Run 2 – Heated/Cooled Seats, Heated Washer Fluid
11Rear Heated Seat Module
12RPA Module
13PASS-Key III System
14Unlock/Lock Module
15Magnetic Ride Control
16Daytime Running Lamps (DRL) (optional)
17Sunroof
18Body Control Module (BCM) Dim
19Body Control Module (BCM)
20Run 1 – Heated Steering Wheel
21Ignition Switch
22Driver Door Module
23Rear Lumbar
24Electronic Leveling Control Module
25Body Control Module (Left Turn Signal)
26Cigarette Lighter, Auxiliary Power Outlet
27Navigation
28Retained Accessory Power 1 (RAP)
29Passenger Door Module
30Sensing and Diagnostic Module
31Accessory Power Outlets
32Body Control Module (BCM) (Inadvertent)
33Retained Accessory Power 2 (RAP)
34Canister Vent Solenoid
35Body Control Module (Courtesy)
36Body Control Module (Right Turn Signal)
37Trunk Release
38Amplifier, Radio
39Body Control Module (CHMSL)
40Body Control Module
41Stoplamp (optional)
42OnStar Module
43Body Modules
44Radio
45Door Unlatch (optional)
46Rear Defogger (J-Case)
47Electronic Leveling Control Compressor (J-Case)
48Blower (J-Case) (optional)
49Blower (J-Case) (optional)
Resistor
50Terminating Resistor
Circuit Breakers
54Right Front Seat
55Left Front Power Seat
56Power Windows
57Power Tilt Steering Wheel
Relays
51Front Blower (optional)
52Rear Defogger
53Electronic Leveling Control Compressor
58Park Lamps
59Fuel Pump
60License Plate Lamp (optional)
61Right Park Lamp (optional)
62Unlock
63Lock
64Run
65Daytime Running Lamps (DRL) (optional)
66Door Unlatch (optional)
67Trunk Release
68Stoplamp (optional)
69Overhead Lamps (optional)
70Retained 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.

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