Cadillac CTS (2011 – 2014) – fuse box diagram Year of production: 2011, 2012, 2013, 2014
Engine compartment (CTS Coupe and Sedan) The underhood fuse block is located on the passenger side of the engine compartment.
Cadillac CTS mk2 – fuse box – engine compartment (CTS Coupe and Sedan) Mini-Fuses Usage 11 Not Used 19 Antilock Braking System (ABS) 22 Display 23 Not Used 24 Body Control Module 1 25 Automatic Forward Lighting System (HID Only) 26 Body Control Module 5 27 Body Control Module 4 28 Navigation Motor 29 All-Wheel Drive 30 Transmission Control Module Battery 31 Horn 33 Left Low‐Beam Headlamp (Domestic Non‐HID Only) 34 Pedestrian Protection System (Export Only) 35 Body Control Module 3 36 Body Control Module 2 38 Headlamp Washer (HID Only) 40 Right Low‐Beam Headlamp (Domestic Non‐HID Only) 41 Air Conditioning Compressor Clutch 43 Low‐Beam Daytime Running Lamps (non‐HID), Left Daytime Running Lamps (HID), Left Trailer Turn Signal (Export Only) 46 Left High‐Beam Headlamp 47 Right High‐Beam Headlamp 50 Right Daytime Running Lamp, Windshield Washer Pump 51 Airbag System Ignition Switch 52 Engine Control Module Ignition, Transmission Control Module Ignition 54 Power Moding (Immobilizer Module, Ignition Switch) 55 Not Used 56 Windshield Wipers 57 Right Low‐Beam (HID Only) 58 Daytime Running Lamps (non‐HID), Left Low‐Beam (HID Only) 59 Right Daytime Running Lamp (HID Only), Right Trailer Turn Signal (Export Only) 60 Instrument Panel Auxiliary Power Outlet 61 Air Quality Sensor, Inside Rear View Mirror, Rear Camera 62 Ignition 64 Steering Wheel Illumination 65 Front Fog Lamps (HID Only) 69 Body Control Module 6, Body Control Module 7 70 Emissions 1 71 Even Ignition Coils 72 Engine Control Module 73 Emissions 2 74 Odd Ignition Coils 75 Transmission Output Speed Sensor, Brake Vacuum Relay 76 Spare 77 Spare 78 Spare 79 Spare 80 Spare 81 Spare
J-Case Fuses Usage 6 Cooling Fan 2 7 Cooling Fan 1 8 Starter 9 Brake Vacuum Pump 10 Antilock Brake System Motor 13 Not Used 14 Electric Parking Brake 15 Not Used 16 Not Used 17 Blower Motor 18 Rear Window Defogger 37 Not Used
Relays Usage 1 Cooling Fan 2 2 Cooling Fan 1 3 Starter 4 Rear Window Defogger 5 Instrument Panel Auxiliary Power Outlet 12 Horn 20 Headlamp Washer (HID Only) 21 Cooling Fan (Series/Parallel) 32 Air Conditioning Compressor Clutch 39 Windshield Washer Pump 42 Right Daytime Running Lamp, Trailer Turn Signal 44 Low‐Beam (non‐HID), Left Daytime Running Lamps (HID), Left Trailer Turn Signal (Export Only) 45 Front Fog Lamps (HID Only) 48 High‐Beam Headlamps 49 Daytime Running Lamps (Non‐HID), Low‐Beam Headlamps (HID) 53 Not Used 63 Main Ignition 66 Windshield Wipers 67 Powertrain 68 Windshield Wipers High Speed
Engine compartment (CTS V Coupe and Sedan) The underhood fuse block is located on the passenger side of the engine compartment.
Cadillac CTS mk2 – fuse box – engine compartment (CTS V Coupe and Sedan) Mini-Fuses Usage 11 Not used 19 Antilock Braking System (ABS) 22 Display 23 Sunroof 24 Body Control Module 1 25 Automatic Forward Lighting System (HID Only) 26 Body Control Module 5 27 Body Control Module 4 28 Navigation Motor 29 Not used 30 Transmission Control Module Battery 31 Horn 33 Not Used 34 Pedestrian Protection System (Export Only) 35 Body Control Module 3 36 Body Control Module 2 38 Headlamp Washer (HID Only) 40 Not Used 41 Air Conditioning Compressor Clutch 43 Left Daytime Running Lamps (HID) 46 Left High‐Beam Headlamp 47 Right High‐Beam Headlamp 50 Right Daytime Running Lamp, Windshield Washer Pump 51 Airbag System Ignition Switch 52 Engine Control Module Ignition, Transmission Control Module Ignition 54 Power Moding (Immobilizer Module, Ignition Switch) 55 Intercooler Pump 56 Windshield Wipers 57 Right Low‐Beam (HID Only) 58 Left Low‐Beam (HID Only) 59 Right Daytime Running Lamp (HID Only) 60 Instrument Panel Auxiliary Power Outlet 61 Air Quality Sensor, Inside Rear View Mirror, Rear Camera 62 Ignition 64 Steering Wheel Illumination 65 Front Fog Lamps (HID Only) 69 Body Control Module 6, Body Control Module 7 70 Emissions 1 71 Even Ignition Coils 72 Odd Ignition Coils 73 Emissions 2 74 Engine Control Module 75 Not Used 76 Spare 77 Spare 78 Spare 79 Spare 80 Spare 81 Spare
J-Case Fuses Usage 6 Cooling Fan 2 7 Cooling Fan 1 8 Starter 9 Not Used 10 Antilock Brake System Motor 13 Not Used 14 Electric Parking Brake 15 Not Used 16 Not Used 17 Blower Motor 18 Rear Window Defogger 37 Magnetic Ride/Suspension Control
Relays Usage 1 Cooling Fan 2 2 Cooling Fan 1 3 Starter 4 Rear Window Defogger 5 Instrument Panel Auxiliary Power Outlet 12 Horn 20 Headlamp Washer (HID Only) 21 Cooling Fan (Series/Parallel) 32 Air Conditioning Compressor Clutch 39 Windshield Washer Pump 42 Right Daytime Running Lamp 44 Left Daytime Running Lamp (HID) 45 Front Fog Lamps (HID Only) 48 High‐Beam Headlamps 49 Low‐Beam Headlamps (HID) 53 Not Used 63 Main Ignition 66 Windshield Wipers 67 Powertrain 68 Windshield Wipers High Speed
Engine Compartment (CTS Wagon) The underhood fuse block is located on the passenger side of the engine compartment.
Cadillac CTS mk2 – fuse box – engine compartment (CTS Wagon) Mini-Fuses Usage 11 Not Used 19 Antilock Braking System (ABS) 22 Display 23 Not Used 24 Body Control Module 1 25 Automatic Forward Lighting System (HID Only) 26 Body Control Module 5 27 Body Control Module 4 28 Navigation Motor 29 All-Wheel Drive 30 Transmission Control Module Battery 31 Horn 33 Left Low‐Beam Headlamp (Domestic Non‐HID Only) 34 Pedestrian Protection System (Export Only) 35 Body Control Module 3 36 Body Control Module 2 38 Headlamp Washer (HID Only) 40 Right Low‐Beam Headlamp (Domestic Non‐HID Only) 41 Air Conditioning Compressor Clutch 43 Low‐Beam Daytime Running Lamps (non‐HID), Left Daytime Running Lamps (HID), Left Trailer Turn Signal (Export Only) 46 Left High‐Beam Headlamp 47 Right High‐Beam Headlamp 50 Right Daytime Running Lamp 51 Airbag System Ignition Switch 52 Engine Control Module Ignition, Transmission Control Module Ignition 54 Power Moding (Immobilizer Module, Ignition Switch) 55 Not Used 56 Windshield Wipers 57 Right Low‐Beam (HID Only) 58 Daytime Running Lamps (non‐HID), Left Low‐Beam (HID Only) 59 Right Daytime Running Lamp (HID Only), Right Trailer Turn Signal (Export Only) 60 Instrument Panel Auxiliary Power Outlet 61 Air Quality Sensor, Inside Rear View Mirror, Rear Camera 62 Ignition 64 Steering Wheel Illumination 65 Front Fog Lamps (HID Only) 69 Body Control Module 6, Body Control Module 7 70 Emissions 1 71 Even Ignition Coils 72 Engine Control Module 73 Emissions 2 74 Odd Ignition Coils 75 Transmission Output Speed Sensor, Brake Vacuum Relay 76 Spare 77 Spare 78 Spare 79 Spare 80 Spare 81 Spare
J-Case Fuses Usage 6 Cooling Fan 2 7 Cooling Fan 1 8 Starter 9 Brake Vacuum Pump 10 Antilock Brake System Motor 13 Not Used 14 Electric Parking Brake 15 Not Used 16 Not Used 17 Blower Motor 18 Transmission Control Module Battery 37 Trailer (Export Only)
Relays Usage 1 Cooling Fan 2 2 Cooling Fan 1 3 Starter 4 Rear Window Defogger 5 Instrument Panel Auxiliary Power Outlet 12 Horn 20 Headlamp Washer (HID Only) 21 Cooling Fan (Series/Parallel) 32 Air Conditioning Compressor Clutch 39 Not used 42 Right Daytime Running Lamp, Trailer Turn Signal 44 Low‐Beam (non‐HID), Left Daytime Running Lamps (HID), Left Trailer Turn Signal (Export Only) 45 Front Fog Lamps (HID Only) 48 High‐Beam Headlamps 49 Daytime Running Lamps (Non‐HID), Low‐Beam Headlamps (HID) 53 Not Used 63 Main Ignition 66 Windshield Wipers 67 Powertrain 68 Windshield Wipers High Speed
Engine Compartment (CTS V Wagon) The underhood fuse block is located on the passenger side of the engine compartment.
Cadillac CTS mk2 – fuse box – engine compartment (CTS-V Wagon) Mini-Fuses Usage 11 Not Used 19 Antilock Braking System (ABS) 22 Display 23 Sunroof 24 Body Control Module 1 25 Automatic Forward Lighting System (HID Only) 26 Body Control Module 5 27 Body Control Module 4 28 Navigation Motor 29 Not used 30 Transmission Control Module Battery 31 Horn 33 Not used 34 Pedestrian Protection System (Export Only) 35 Body Control Module 3 36 Body Control Module 2 38 Headlamp Washer (HID Only) 40 Not used 41 Air Conditioning Compressor Clutch 43 Left Daytime Running Lamps (HID) 46 Left High‐Beam Headlamp 47 Right High‐Beam Headlamp 50 Right Daytime Running Lamp 51 Airbag System Ignition Switch 52 Engine Control Module Ignition, Transmission Control Module Ignition 54 Power Moding (Immobilizer Module, Ignition Switch) 55 Intercooler Pump 56 Windshield Wipers 57 Right Low‐Beam (HID Only) 58 Left Low‐Beam (HID Only) 59 Right Daytime Running Lamp (HID Only) 60 Instrument Panel Auxiliary Power Outlet 61 Air Quality Sensor, Inside Rear View Mirror, Rear Camera 62 Ignition 64 Steering Wheel Illumination 65 Front Fog Lamps (HID Only) 69 Body Control Module 6, Body Control Module 7 70 Emissions 1 71 Even Ignition Coils 72 Odd Ignition Coils 73 Emissions 2 74 Engine Control Module 75 Not used 76 Spare 77 Spare 78 Spare 79 Spare 80 Spare 81 Spare
J-Case Fuses Usage 6 Cooling Fan 2 7 Cooling Fan 1 8 Starter 9 Not used 10 Antilock Brake System Motor 13 Not Used 14 Electric Parking Brake 15 Not Used 16 Not Used 17 Blower Motor 18 Rear Window Defogger 37 Magnetic Ride/
Relays Usage 1 Cooling Fan 2 2 Cooling Fan 1 3 Starter 4 Rear Window Defogger 5 Instrument Panel Auxiliary Power Outlet 12 Horn 20 Headlamp Washer (HID Only) 21 Cooling Fan (Series/Parallel) 32 Air Conditioning Compressor Clutch 39 Not used 42 Right Daytime Running Lamp 44 Left Daytime Running Lamps (HID) 45 Front Fog Lamps (HID Only) 48 High‐Beam Headlamps 49 Low‐Beam Headlamps (HID) 53 Not Used 63 Main Ignition 66 Windshield Wipers 67 Powertrain 68 Windshield Wipers High Speed
Rear Compartment Fuse Block (CTS Coupe and Sedan) The rear compartment fuse block is located on top of the battery, on the right side of the trunk. The battery access door must be removed to access the fuse block.
Cadillac CTS mk2 – fuse box – rear compartment (CTS Coupe and Sedan) Relays Usage 5 Stop Lamps (Export Only) 6 Door Lock 7 Door Unlock 8 Fuel Door Unlock (Export Only) 9 Right Position Lamp (Export Only) 10 Console/Auxiliary Power Outlet 11 Trunk Release 12 Side Marker Lamps 13 Left Position Lamps
Mini-Fuses Usage 14 Right Position Lamp 15 Left Position Lamp 16 Door Lock 17 Console/Auxiliary Power Outlet 18 Rear Fog/Export Body Control Module (Export Only) 19 Trunk Release 20 Easy Entry Seats (Coupe Only) 21 Sunroof 22 Right Position Lamp (Export Only) 23 Regulated Voltage Control Sensor 24 Audio System (Radio) 25 Airbag System 26 Remote Keyless Entry/PASS‐Key® Theft Deterrent Module 27 Audio Speakers/Subwoofer 28 OnStar® System 29 Engine Control Module 30 Canister Vent 31 Fuel Pump 33 Stop Lamps (Export Only) 34 Theft Deterrent System/Universal Garage Door Opener 35 Memory Seat Module 36 Passenger Door Module 38 Not Used 39 Amplifier
Circuit Breakers Usage 1 Driver Power Seat Switch 2 Passenger Power Seat Switch 3 Power Windows 4 Power Steering Column 32 Left Rear Window Switch 37 Right Rear Window Switch
Rear Compartment Fuse Block (CTS-V Coupe and Sedan) The rear compartment fuse block is located on top of the battery, on the right side of the trunk. The battery access door must be removed to access the fuse block.
Cadillac CTS mk2 – fuse box – rear compartment (CTS-V Coupe and Sedan) Relays Usage 5 Stop Lamps (Export Only) 6 Door Lock 7 Door Unlock 8 Fuel Door Unlock (Export Only) 9 Right Position Lamp (Export Only) 10 Console/Auxiliary Power Outlet 11 Trunk Release 12 Side Marker Lamps 13 Left Position Lamps
Mini-Fuses Usage 14 Right Position Lamp 15 Left Position Lamp 16 Door Lock 17 Console/Auxiliary Power Outlet 18 Rear Fog/Export Body Control Module (Export Only) 19 Trunk Release 20 Easy Entry Seats (Coupe Only) 21 Fuel Pump 22 Right Position Lamp (Export Only) 23 Regulated Voltage Control Sensor 24 Audio System (Radio) 25 Airbag System 26 Remote Keyless Entry/PASS‐Key® Theft Deterrent Module 27 Audio Speakers/Subwoofer 28 OnStar® System 29 Engine Control Module 30 Canister Vent 31 Rear Differential Cooling Pump 33 Stop Lamps (Export Only) 34 Theft Deterrent System/Universal Garage Door Opener 35 Memory Seat Module 36 Passenger Door Module 38 Not Used 39 Amplifier
Circuit Breakers Usage 1 Driver Power Seat Switch 2 Passenger Power Seat Switch 3 Power Windows 4 Power Steering Column 32 Left Rear Window Switch 37 Right Rear Window Switch
Rear Compartment Fuse Block (CTS Wagon) The rear compartment fuse block is located on top of the battery, on the right side of the trunk. The battery access door must be removed to access the fuse block.
Cadillac CTS mk2 – fuse box – rear compartment (CTS Wagon) Relays Usage 5 Stop Lamps (Export Only) 6 Door Lock 7 Door Unlock 8 Fuel Door Unlock (Export Only) 9 Right Position Lamp (Export Only) 10 Console/Auxiliary Power Outlet 11 Not used 12 Side Marker Lamps 13 Left Position Lamps
Mini-Fuses Usage 14 Right Position Lamp 15 Left Position Lamp 16 Door Lock 17 Console/Auxiliary Power Outlet 18 Rear Fog/Export Body Control Module (Export Only) 19 Rear Windshield Wiper/Washer 20 Windshield Washer Pump 21 Sunroof 22 Right Position Lamp (Export Only) 23 Regulated Voltage Control Sensor 24 Audio System (Radio) 25 Airbag System 26 Remote Keyless Entry/PASS‐Key® Theft Deterrent Module 27 Audio Speakers/Subwoofer 28 OnStar® System 29 Engine Control Module 30 Canister Vent 31 Fuel Pump 33 Stop Lamps (Export Only) 34 Theft Deterrent System/Universal Garage Door Opener 35 Memory Seat Module 36 Passenger Door Module 38 Rear Auxiliary Power Outlet 39 Amplifier
Circuit Breakers Usage 1 Driver Power Seat Switch 2 Passenger Power Seat Switch 3 Power Windows 4 Power Steering Column 32 Left Rear Window Switch 37 Right Rear Window Switch
Rear Compartment Fuse Block (CTS-V Wagon) The rear compartment fuse block is located on top of the battery, on the right side of the trunk. The battery access door must be removed to access the fuse block.
Cadillac CTS mk2 – fuse box – rear compartment (CTS-V Wagon) Relays Usage 5 Stop Lamps (Export Only) 6 Door Lock 7 Door Unlock 8 Fuel Door Unlock (Export Only) 9 Right Position Lamp (Export Only) 10 Console/Auxiliary Power Outlet 11 Not used 12 Side Marker Lamps 13 Left Position Lamps
Mini-Fuses Usage 14 Right Position Lamp 15 Left Position Lamp 16 Door Lock 17 Console/Auxiliary Power Outlet 18 Rear Fog/Export Body Control Module (Export Only) 19 Rear Windshield Wiper/Washer 20 Windshield Washer Pump 21 Fuel Pump 22 Right Position Lamp (Export Only) 23 Regulated Voltage Control Sensor 24 Audio System (Radio) 25 Airbag System 26 Remote Keyless Entry/PASS‐Key® Theft Deterrent Module 27 Audio Speakers/Subwoofer 28 OnStar® System 29 Engine Control Module 30 Canister Vent 31 Rear Differential Cooling Pump 33 Stop Lamps (Export Only) 34 Theft Deterrent System/Universal Garage Door Opener 35 Memory Seat Module 36 Passenger Door Module 38 Rear Auxiliary Power Outlet 39 Amplifier
Circuit Breakers Usage 1 Driver Power Seat Switch 2 Passenger Power Seat Switch 3 Power Windows 4 Power Steering Column 32 Left Rear Window Switch 37 Right Rear Window Switch
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
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