Access Cadillac CTS fuse box diagrams for 2014–2019 models with relay locations, fuse assignments, panel layouts, and electrical system information. This article covers the third-generation Cadillac CTS , produced from 2013 , and includes fuse box diagrams for Cadillac CTS 2014, 2015, 2016, 2017, 2018 and 2019 , along with details about the location of the fuse panels inside the vehicle and a clear explanation of the assignment of each fuse and relay (fuse layout).
The fuse block under the hood is located on the passenger side of the engine compartment.
Assignment of the fuses in the engine compartment fuse box (2014-2016)
Fuse Data
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No. Description 1 – 2 – 3 Passenger motorized seat belt (if equipped) 4 Body Control Module 6 5 – 6 Driver Power Seat 11 – 13 Passenger Power Seat 14 Body Control Module 5 15 Front Wiper 16 – 17 Headlamp Washer (if equipped) 18 – 19 Antilock Brake System Pump 20 Antilock Brake System Valve 21 AIR Pump (if equipped) 22 Driver motorized seat belt 27 Spare / Heated Seat 2 28 Body Control Module 1 / Spare 29 AFS AHL / Pedestrian Protection (if equipped) 30 Passenger Window Switch 31 Body Control Module 7 32 Sunroof 33 – 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 43 Washer 46 – 47 Instrument Panel Body Ignition 48 Fuel System Control Module Ignition 49 Heated Steering Wheel 50 Steering Column Lock (if equipped) 51 Coolant Pump (if equipped) 53 Air Conditioning Compressor Clutch 54 AIR Solenoid (if equipped) 55 Transmission Control Module / Spare 58 Starter 63 Adaptive Headlamp Leveling (if equipped) 64 Left High Intensity Discharge Headlamp (if equipped) 65 Right High Intensity Discharge Headlamp (if equipped) 66 Headlamp High Left / Right 67 Horn 69 Cooling Fan 70 Aero Shutter 71 Transmission Control Module Ignition 72 Engine Control Module Ignition 73 Brake Vacuum Pump (if equipped) 74 –
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Assignment of the relays in the engine compartment fuse box (2014-2016)
Fuse Data
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No. Description 7 – 8 Headlamp Washer (if equipped) 9 – 10 – 12 – 23 Wiper Control 24 Wiper Speed 25 Engine Control Module 26 AIR Pump (if equipped) 42 AIR Solenoid (if equipped) 44 – 45 Front Washer 52 Coolant Pump (if equipped) 56 Headlamp Low (if equipped) 57 Headlamp High 59 Starter 60 Run / Crank 61 Vacuum Pump (if equipped) 62 Air Conditioning Control 68 Horn
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Assignment of the fuses in the engine compartment fuse box (2017-2019)
Fuse Data
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No. Description 1 – 2 – 3 Passenger motorized seat belt (if equipped) 4 – 5 – 6 Driver Power Seat 7 – 9 – 10 – 11 – 12 – 13 Passenger Power Seat 14 – 15 2017-2018: Passive entry / Passive start / Front wipers2019: –16 – 17 Headlamp Washer (if equipped) 18 – 19 Antilock Brake System Pump 20 Antilock Brake System Valve 21 – 22 Driver motorized seat belt 26 – 27 Spare / Heated Seat 2 28 Spare / Reverse lock out 29 Adaptive forward lighting, Automatic headlamp leveling / Pedestrian protection 30 – 31 Passenger window switch 32 – 33 Sunroof 34 Front wiper 35 Steering column lock 36 Rear bussed electrical center / Ignition 37 Spare / Malfunction Indicator Lamp / Ignition 38 Aeroshutter 39 O2 sensor / Emissions 40 2017: Ignition coil / Injectors2018-2019: Ignition coil even / O2 sensor41 2017: Spare / Ignition coil / Injectors2018-2019: Ignition coil odd42 Engine control module (if equipped) 43 – 44 – 45 Front Washer Relay 48 Instrument panel / Body / Ignition 49 Fuel system control module / Ignition 50 Heated steering wheel (if equipped) 51 Engine control module / Ignition (if equipped) 52 Transmission control module / Ignition (if equipped) 53 Coolant pump 55 – 56 Transmission control module (if equipped) 64 Automatic/Adaptive headlamp leveling (if equipped) 65 Left HID headlamp (if equipped) 66 Right HID headlamp 67 Left / Right high-beam headlamp 68 Headlamp leveling motor 69 Horn 71 Cooling fan 72 Starter 2 73 Brake vacuum pump (if equipped) 74 Starter 1 75 Air conditioning clutch 76 –
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Assignment of the relays in the engine compartment fuse box (2017-2019)
Fuse Data
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No. Description 8 Headlamp washer (if equipped) 23 Wiper control 24 Wiper speed 25 Engine control module 46 Rear washer 47 Front washer 54 Coolant pump (if equipped) 57 Low-beam headlamp 58 High-beam headlamp 59 Run / Crank 60 Starter 2 61 Vacuum pump (if equipped) 62 Starter 1 63 Air conditioning control (if equipped) 70 Horn
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The instrument panel fuse block is located at the end of the driver side of the instrument panel.
Assignment of the fuses in the instrument panel fuse box
Fuse Data
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No. Type Description 2 Mini Cupholder Motor 3 Mini Electric Steering Column Lock 4 Mini 2014-2016: Data Link Connector2017-2019: –5 Mini 2014-2017: Heater, Ventilation, and Air Conditioning Control2018-2019: –6 Mini Tilt and Telescoping Steering Column 8 Mini 2014-2016: Spare2017-2019: Data Link Connector9 Mini Glove Box Release 10 Mini Shunt 11 Mini Body Control Module 1 12 Mini Body Control Module 5 13 Mini 2014-2016: Spare2017-2019: Body Control Module 614 Mini – 15 Mini 2014-2016: Spare2017-2019: Body Control Module 716 Mini 2014-2016: Spare2017-2019: Transmission Control Module17 Mini – 18 Mini – 19 Mini 2014-2016: Spare2017-2019: Auxiliary Power Outlet20 Mini 2014-2016: Spare2017-2019: Lighter21 Mini 2014-2016: Spare2017-2019: Wireless Charger22 Mini Sensing Diagnostic Module / Automatic Occupant Sensing 23 Mini Radio / DVD / Heating, Ventilation, and Air Conditioning Control 24 Mini Display 25 Mini Heated Steering Wheel 26 Mini Wireless Charger 27 Mini Steering Wheel Switches 28 Mini – 29 Mini 2014-2017: Spare2018-2019: Visor Vanity Lamp30 Mini – 31 J-Case 2014-2017: Spare2018-2019: Retained Accessory Power / Accessory32 J-Case 2014-2016: Spare2017: Retained Accessory Power2018-2019: Spare33 J-Case Front Heating, Ventilation, and Air Conditioning Blower
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Assignment of the circuit breakers in the instrument panel fuse box
Fuse Data
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No. Description CB1 Retained Accessory Power / Accessory Power Outlet Power CB7 –
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Assignment of the relays in the instrument panel fuse box
Fuse Data
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No. Description K10 Retained Accessory Power / Accessory K605 Logistics K644 2014-2016: Glove Box Release2017-2018: Retained Accessory Power / Glove Box Release2019: Retained Accessory Power / Accessory / Glove Box Release
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The rear compartment fuse block is located behind a cover on the driver side of the rear compartment.
Assignment of the fuses in the luggage compartment fuse box
Fuse Data
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No. Description 1 2014-2016: Electronic Limited Slip Differential / DC DC Transformer (if equipped)2017-2019: Rear driver control module / DC DC transformer (if equipped)2 Left Window 3 Body Control Module 8 4 Alternate current inverter (if equipped) 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 (if equipped) 12 OnStar (if equipped) 13 Right Window 14 Electric Parking Brake 15 – 16 Trunk Release 19 Logistics (if equipped) 21 Mirror Window Module 22 2014-2016: Pedestrian Protection2017-2019: –23 Canister Vent 24 2014-2017: Pedestrian Protection2018-2019: Body control module 225 Rear Vision Camera (if equipped) 26 Front Ventilated Seats (if equipped) 27 Side blind zone alert / Lane departure warning / External object calculating module 28 Trailer / Sunshade (if equipped) 29 Rear Heated Seats (if equipped) 30 Semi-Active Damping System (if equipped) 31 2014-2016: Transfer Case Control Module / Electronic Limited Slip Differential (if equipped)2017-2019: Transfer case control module / Rear control drive module32 Theft Module / Universal Garage Door Opener / Rain Sensor 33 Ultrasonic parking assist (if equipped) 34 Radio / DVD (if equipped) 35 2014-2016: Spare2017-2019: Exhaust valve (V-series)36 Trailer (if equipped) 37 2014-2018: Fuel Pump / Fuel System Control Module2019: Fuel system control module38 2014-2016: –2017: Fuel pump2018-2019: Fuel pump prime / Exhaust valve (V-series)39 – 42 Memory Seat Module (if equipped) 43 Body Control Module 3 44 – 45 Battery Regulated Voltage Control 46 Engine Control Module / Battery 47 – 48 – 49 Trailer Module (if equipped) 53 – 55 –
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Assignment of the relays in the luggage compartment fuse box
Fuse Data
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No. Description 17 2014-2017: Run (if equipped)2018-2019: Trailer18 Logistics (if equipped) 20 Rear Window Defogger 40 2014-2016: –2017: Exhaust valve2018-2019: Run crank 2 (V-series)41 2014-2016: –2017: Run / Crank 22018-2019: Fuel pump prime / Run crank 250 Child door lock security 51 2014-2018: Rear Closure Release2019: Rear closure52 2014-2016: –2017-2018: Rear closure2019: Rear closure 254 Door Lock Security 56 Fuel Door (if equipped)
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