Cadillac CTS (2014-2019) fuses and relays



In this article, we consider the third generation Cadillac CTS, produced from 2014 to 2019. Here you will find fuse box diagrams of Cadillac CTS 2014, 2015, 2016, 2017, 2018 and 2019, get information about the location of the fuse panels inside the car, and learn about the assignment of each fuse (fuse layout) and relay.

Fuse box diagram: Cadillac CTS (2014-2018..)

Cigar lighter / power outlet fuses in the Cadillac CTS are the fuses №19 (Auxiliary power outlet) and №20 (Lighter) in the Instrument panel fuse box (2017-2018).

Passenger compartment

The fuse box is located on the driver’s side of the instrument panel, behind the coverThe location of the fuses in the passenger compartment: Cadillac CTS (2014-2018)

Fuse box diagram

Instrument panel fuse box diagram: Cadillac CTS (2014, 2015, 2016, 2017)


Assignment of the fuses and relays in the instrument panel
Mini Fuses
2Motorized Cupholder
3Electric Steering Column Lock
42014-2016: Data Link Connector
2017-2018: Not Used
52014-2017: Heater, Ventilation, and Air Conditioning Control
2018: Not Used
6Tilt and Telescoping Steering Column
82014-2016: Spare
2017-2018: Data link connector
9Glove Box Release
11Body Control Module 1
12Body Control Module 5
132014-2016: Spare
2017-2018: Body control module 6
152014-2016: Spare
2017-2018: Body control module 7
162014-2016: Spare
2017-2018: Transmission control module
192014-2016: Spare
2017-2018: Auxiliary power outlet
202014-2016: Spare
2017-2018: Lighter
212014-2016: Spare
2017-2018: Wireless charger
22Sensing Diagnostic Module/Automatic Occupant Sensing
23Radio/DVD/Heater, Ventilation, and Air Conditioning
25Heated Steering Wheel
26Wireless Charger
27Steering Wheel Switches
292014-2017: Spare
2018: Visor vanity lamp
J-Case Fuses
312014-2017: Spare
2018: Retained accessory power/Accessory
322014-2016, 2018: Spare
2017: Retained accessory power
33Front Heater, Ventilation, and Air Conditioning Blower
Circuit Breakers
CB12014-2016: Retained Accessory Power/Accessory Power Outlet Power
2017-2018: Retained Accessory Power
K102014-2016, 2018: Retained Accessory Power/Accessory
2017: Retained Accessory Power
K6442014-2016: Glove Box Release
2017-2018: Retained accessory power/Glove box release

Engine compartment

The location of the fuses in the engine compartment: Cadillac CTS (2014-2018)


Fuse box diagram (2014-2016)

Under-hood fuse box diagram: Cadillac CTS (2014, 2015, 2016)

Assignment of the fuses and relays in the Engine compartment (2014-2016)
1Not Used
2Not Used
3Passenger motorized seat belt (if equipped)
4Body Control Module 6
5Not Used
6Driver Power Seat
7Not Used
8Headlamp Washer Relay (if equipped)
9Not Used
10Not Used
11Not Used
12Not Used
13Passenger Power Seat
14Body Control Module 5
15Front Wiper
16Not Used
17Headlamp Washer (if equipped)
18Not Used
19Antilock Brake System Pump
20Antilock Brake System Valve
21AIR Pump (if equipped)
22Driver motorized seat belt
23Wiper Control Relay
24Wiper Speed Relay
25Engine Control Module Relay
26AIR Pump Relay (if equipped)
27Spare/Heated Seat 2
28Body Control Module 1/Spare
29AFS AHL/Pedestrian Protection (if equipped)
30Passenger Window Switch
31Body Control Module 7
33Not Used
34AOS Display/MIL Ignition
35Rear Electrical Center Ignition
36Spare PT Fuse
37Oxygen Sensor
38Ignition Coils/Injectors
39Ignition Coils/Injectors/Spare
40Engine Control Module
41Fuel Heater
42AIR Solenoid Relay (if equipped)
44Not Used
45Front Washer Relay
46Not Used
47Instrument Panel Body Ignition
48Fuel System Control Module Ignition
49Heated Steering Wheel
50Steering Column Lock (if equipped)
51Coolant Pump (if equipped)
52Coolant Pump Relay (if equipped)
53Air Conditioning Compressor Clutch
54AIR Solenoid (if equipped)
55Transmission Control Module/Spare
56Headlamp Low Relay (if equipped)
57Headlamp High Relay
59Starter Relay
60Run/Crank Relay
61Vacuum Pump Relay (if equipped)
62Air Conditioning Control Relay
63Adaptive Headlamp Leveling (if equipped)
64Left High Intensity Discharge Headlamp (if equipped)
65Right High Intensity Discharge Headlamp (if equipped)
66Headlamp High Left/Right
68Horn Relay
69Cooling Fan
70Aero Shutter
71Transmission Control Module Ignition
72Engine Control Module Ignition
73Brake Vacuum Pump (if equipped)
74Not Used


Fuse box diagram (2017-2018)

Under-hood fuse box diagram: Cadillac CTS (2017, 2018)

Assignment of the fuses and relays in the engine compartment (2017-2018)
1Not Used
2Not Used
3Passenger motorized safety belt (if equipped)
4Not Used
5Not Used
6Driver Power Seat
7Not Used
9Not Used
10Not Used
11Not Used
12Not Used
13Passenger Power Seat
14Not Used
15Passive entry/Passive start/Front wipers
16Not Used
17Headlamp Washer (if equipped)
18Not Used
19ABS pump
20ABS valve
21Not Used
22Driver motorized safety belt
26Not Used
27–/Heated Seat 2
28–/Reverse lock out
29Adaptive forward lighting, Automatic headlamp leveling/ Pedestrian protection
30Not Used
31Passenger window switch
32Not Used
34Front wiper
35Steering column lock
36Rear bussed electrical center/Ignition
37–/Malfunction Indicator Lamp/Ignition
39O2 sensor/Emissions
402017: Ignition coil/Injectors
2018: Ignition coil even/O2 sensor
412017: –/Ignition coil/Injectors
2018: Ignition coil odd
42Engine control module (if equipped)
43Not Used
44Not Used
45Front Washer Relay
48Instrument panel/Body/Ignition
49Fuel system control module/Ignition
50Heated steering wheel (if equipped)
51Engine control module/Ignition (if equipped)
52TCM/Ignition (if equipped)
53Coolant pump
55Not Used
56Transmission control module/– (if equipped)
64Automatic headlamp leveling (if equipped)
65Left HID headlamp (if equipped)
66Right HID headlamp
67High-beam headlamps
68Headlamp leveling motor
71Coolant fan
72Starter 2
73Brake vacuum pump (if equipped)
74Starter 1
75 Air conditioning clutch
76Not Used
8Headlamp washer (if equipped)
23Wiper control relay
24Wiper speed
25Engine control module
46Rear washer
47Front washer
54Coolant pump (if equipped)
57Low-beam headlamp
58High-beam headlamp
60Starter 2
61Vacuum pump (if equipped)
62Starter 1
63Air conditioning control (if equipped)

Luggage compartment

It is located in the left side of the luggage compartment, behind the coverThe location of the fuses in the trunk: Cadillac CTS (2014-2018)


Fuse box diagram

Trunk fuse box diagram: Cadillac CTS (2014, 2015, 2016, 2017, 2018)

Assignment of the fuses and relays in the Luggage compartment (2014-2018)
12014-2016: Electronic Limited Slip Differential/DC DC Transformer (if equipped)
2017-2018: Rear driver control module/DC DC transformer (if equipped)
2Left Window
3Body Control Module 8
4Alternate current inverter (if equipped)
5Passive Entry / Passive Start / Battery 1
6Body Control Module 4
7Heated Mirrors
9Rear Window Defogger
10Glass Break
11Trailer Connector (if equipped)
12OnStar (If Equipped)
13Right Window
14Electric Parking Brake
15Not Used
16Trunk Release
172014-2017: Run Relay (if equipped)
2018: Trailer Relay
18Logistics Relay (if equipped)
192014-2016, 2018: Logistics Fuse (if equipped)
2017: Not Used
20Rear Window Defogger Relay
21Mirror Window Module
222014-2016: Pedestrian Protection
2017-2018: Not Used
23Canister Vent
242014-2017: Pedestrian Protection
2018: Body control module 2
25Rear Vision Camera (if equipped)
26Front Ventilated Seats (if equipped)
27Side blind zone alert/Lane departure warning/External object calculating module
28Trailer/Sunshade (if equipped)
29Rear Heated Seats (if equipped)
30Semi-Active Damping System (if equipped)
312014-2016: Transfer Case Control Module/Electronic Limited Slip Differential (if equipped)
2017-2018: Traction control module/Rear control drive module
32Theft Module/Universal Garage Door Opener/Rain Sensor
33Ultrasonic parking assist (if equipped)
34Radio/DVD (if equipped)
352014-2016: Spare
2017-2018: Exhaust valve (V-series)
36Trailer (if equipped)
37Fuel Pump/Fuel System Control Module
382014-2016: Not Used
2017: Fuel pump
2018: Fuel pump prime/Exhaust valve (V-series)
39Not Used
402014-2016: Not Used
2017: Exhaust valve
2018: Run crank 2 (V-series)
412014-2016: Not Used
2017: Run/Crank 2
2018: Fuel pump prime/ Run crank 2
42Memory Seat Module (if equipped)
43Body Control Module 3
44Not Used
45Battery Regulated Voltage Control
46Engine Control Module / Battery
47Not Used
48Not Used
49Trailer Module (if equipped)
50Door Lock Security
51Rear Closure Release
522014-2016: Not Used
2017-2018: Rear closure
53Not Used
54Door Lock Security
55Not Used
56Fuel Door (if equipped)