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In this article, you will find information about the fuses of the Cadillac ATS (models 2015 and 2016), including diagrams of the fuse boxes, a list of fuses and relays, their designation, and the location of the fuse blocks within the vehicle.
Checking and Replacing Fuses in Cadillac ATS
The vehicle has fuses and circuit breakers to protect against an electrical system overload. When the current electrical load is too heavy, the circuit breaker opens and closes, protecting the circuit until the current load returns to normal or the problem is fixed. This greatly reduces the chance of circuit overload and fire caused by electrical problems. Fuses and circuit breakers protect power devices in the vehicle. To check a fuse, look at the silver-colored band inside the fuse. If the band is broken or melted, replace the fuse. Be sure to replace a bad fuse with a new one of the identical size and rating.
Caution!
Spilling liquid on any electrical component on the vehicle may damage it. Always keep the covers on any electrical component.
Location of Fuse Boxes
Engine Compartment Fuse Block:
The underhood fuse block is on the passenger side of the engine compartment. Lift the fuse block cover to access the fuses.
Instrument Panel Fuse Block:
The instrument panel fuse block is in the end of the driver side of the instrument panel. To access the fuses, remove the end panel by gently prying with a plastic tool near each clip, beginning at the point shown.
Rear Compartment Fuse Block:
The rear compartment fuse block is behind a cover on the driver side of the rear compartment.
An electrical overload may cause the lamps to go on and off, or in some cases to remain off. Have the headlamp wiring checked right away if the lamps go on and off or remain off.
If the wiper motor overheats due to heavy snow or ice, the windshield wipers will stop until the motor cools and will then restart. If the overload is caused by an electrical problem and not snow or ice, be sure to get it fixed.
Fuse Box Diagrams
2015
Engine Compartment Fuse Block
| № | Usage |
|---|---|
| 1 | Not Used |
| 2 | Not Used |
| 3 | Not Used |
| 4 | Body Control Module 6 |
| 5 | Not Used |
| 6 | Driver Power Seat |
| 7 | Not Used |
| *8 | Headlamp Washer Relay |
| 9 | Not Used |
| 10 | Not Used |
| 11 | Not Used |
| 12 | Not Used |
| 13 | Passenger Power Seat |
| 14 | Body Control Module 5 |
| 15 | Passive Entry/ Passive Start |
| 16 | Not Used |
| *17 | Headlamp Washer |
| 18 | Not Used |
| 19 | Antilock Brake System Pump |
| 20 | Antilock Brake System Valve |
| *21 | AIR Pump |
| 22 | Not Used |
| 23 | Wiper Control Relay |
| 24 | Wiper Speed Relay |
| 25 | Engine Control Module Relay |
| *26 | AIR Pump Relay |
| 27 | Spare/Heated Seat 2 |
| 28 | Body Control Module 1/Spare |
| *29 | AFS AHL/ Pedestrian Protection |
| 30 | Passenger Window Switch |
| 31 | Body Control Module 7 |
| 32 | Sunroof |
| 33 | Front Wiper |
| 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 |
| *42 | AIR Solenoid Relay |
| 43 | Washer |
| 44 | Rear Washer Relay |
| 45 | Front Washer Relay |
| 46 | Not Used |
| 47 | Instrument Panel Body Ignition |
| 48 | Fuel System Control Module Ignition |
| 49 | Heated Steering Wheel |
| *50 | Steering Column Lock |
| *51 | Coolant Pump |
| *52 | Coolant Pump Relay |
| 53 | Air Conditioning Compressor Clutch |
| *54 | AIR Solenoid |
| 55 | Transmission Control Module/ Spare |
| *56 | Headlamp Low Relay |
| 57 | Headlamp high Relay |
| 58 | Starter |
| 59 | Starter Relay |
| 60 | Run/Crank Relay |
| *61 | Vacuum Pump Relay |
| 62 | Air Conditioning Control Relay |
| *63 | Adaptive Headlamp Leveling |
| *64 | Left High Intensity Discharge Headlamp |
| *65 | Right High Intensity Discharge Headlamp |
| 66 | Headlamp High Left/Right |
| 67 | Horn |
| 68 | Horn Relay |
| 69 | Cooling Fan |
| 70 | Aero Shutter |
| 71 | Transmission Control Module Ignition |
| 72 | Engine Control Module Ignition |
| *73 | Brake Vacuum Pump |
| 74 | Not Used |
| * Optional | |
Instrument Panel Fuse Block
| № | Usage |
|---|---|
| 2 | Spare |
| 3 | Electric Steering Column Lock |
| 4 | Spare |
| 5 | Heater, Ventilation, and Air Conditioning Control |
| 6 | Tilt and Telescope Steering Column |
| 8 | Data Link Connector |
| 9 | Spare |
| 10 | Shunt |
| 11 | Spare |
| 12 | Spare |
| 13 | Spare |
| 14 | Spare |
| 15 | Spare |
| 16 | Spare |
| 17 | Spare |
| 18 | Spare |
| 19 | Spare |
| 20 | Spare |
| 21 | Spare |
| 22 | Sensing Diagnostic Module / Automatic Occupant Sensing |
| 23 | Radio / DVD / Heater, Ventilation, and Air Conditioning Control |
| 24 | Display |
| 25 | Heated Steering Wheel |
| 26 | Wireless Charger |
| 27 | Steering Wheel Controls |
| 28 | Spare |
| 29 | Spare |
| 30 | Spare |
| 31 | Spare |
| 32 | Spare |
| 33 | Front Heater, Ventilation, and Air Conditioning Blower |
| CB1 | Retained Accessory Power / Accessory Power Outlet Power |
| CB7 | Spare |
| K10 | Retained Accessory Power / Accessory |
| K605 | Logistics |
| K644 | Spare |
Rear Compartment Fuse Block
| № | Usage |
|---|---|
| 1 | Rear Driver Control Module |
| 2 | Left Window |
| 3 | Body Control Module 8 |
| 4 | A/C Inverter |
| 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 |
| 12 | OnStar (If Equipped) |
| 13 | Right Window |
| 14 | Electric Parking Brake |
| 15 | Not Used |
| 16 | Trunk Release |
| 17 | Run Relay |
| 18 | Logistics Relay |
| 19 | Logistics Fuse |
| 20 | Rear Window Defogger Relay |
| 21 | Mirror Window Module |
| 22 | Not Used |
| 23 | Canister Vent |
| 24 | Body Control Module 2 |
| 25 | Rear Vision Camera |
| 26 | Front Ventilated Seats |
| 27 | SBZA / LDW / EOCM |
| 28 | Trailer / Sunshade |
| 29 | Rear Heated Seats |
| 30 | Semi-Active Damping System |
| 31 | Transfer Case Control Module |
| 32 | Theft Module / Universal Garage Door Opener / Rain Sensor |
| 33 | UPA |
| 34 | Radio/DVD |
| 35 | Not Used |
| 36 | Trailer |
| 37 | Fuel Pump / Fuel System Control Module |
| 38 | Not Used |
| 39 | Not Used |
| 40 | Not Used |
| 41 | Not Used |
| 42 | Memory Seat Module |
| 43 | Body Control Module 3 |
| 44 | Not Used |
| 45 | Battery Regulated Voltage Control |
| 46 | Engine Control Module Battery |
| 47 | Not Used |
| 48 | Not Used |
| 49 | Trailer Module |
2016
Engine Compartment Fuse Block
| № | Usage |
|---|---|
| 1 | Not used |
| 2 | Not used |
| 3 | Passenger motorized seat belt |
| 4 | Not used |
| 5 | Not used |
| 6 | Driver power seat |
| 7 | Not used |
| 8 | Headlamp washer relay |
| 9 | Not used |
| 10 | Not used |
| 11 | Not used |
| 12 | Not used |
| 13 | Passenger power seat |
| 14 | Not used |
| 15 | Passive entry / Passive start |
| 16 | Not used |
| 17 | Headlamp washer |
| 18 | Not used |
| 19 | Antilock brake system pump |
| 20 | Antilock brake system valve |
| 21 | Not used |
| 22 | Driver motorized seat belt |
| 23 | Wiper control relay |
| 24 | Wiper speed relay |
| 25 | Engine control module relay |
| 26 | Not used |
| 27 | Spare / Heated seat 2 |
| 28 | Spare / Reverse lockout |
| 29 | AFS AHL / Pedestrian protection |
| 30 | Not used |
| 31 | Passenger window switch |
| 32 | Not used |
| 33 | Sunroof |
| 34 | Front wiper |
| 35 | Steering column lock |
| 36 | Rear electrical center ignition |
| 37 | Spare / MIL ignition |
| 38 | Spare / PT fuse |
| 39 | Oxygen sensor |
| 40 | Ignition coils / Injectors |
| 41 | Ignition coils / Injectors / Spare |
| 42 | Engine control module |
| 43 | Not used |
| 44 | Not used |
| 45 | Washer |
| 46 | Not used |
| 47 | Front washer relay |
| 48 | Instrument panel body ignition |
| 49 | Fuel system control module ignition |
| 50 | Heated steering wheel |
| 51 | Engine control module ignition |
| 52 | Transmission control module ignition |
| 53 | Coolant pump |
| 54 | Coolant pump relay |
| 55 | Not used |
| 56 | Transmission control module / Spare |
| 57 | Headlamp low relay |
| 58 | Headlamp high relay |
| 59 | Run/Crank relay |
| 60 | Starer 2 relay |
| 61 | Vacuum pump relay |
| 62 | Starter relay |
| 63 | Air conditioning control relay |
| 64 | Adaptive headlamp leveling |
| 65 | Left high intensity discharge headlamp |
| 66 | Right high intensity discharge headlamp |
| 67 | Headlamp high left/right |
| 68 | Aero shutter |
| 69 | Horn |
| 70 | Horn relay |
| 71 | Cooling fan |
| 72 | Starter 2 |
| 73 | Brake vacuum pump |
| 74 | Starter |
| 75 | Air conditioning compressor clutch |
| 76 | Not used |
Instrument Panel Fuse Block
| № | Usage |
|---|---|
| 2 | Spare |
| 3 | Electric steering column lock |
| 4 | Spare |
| 5 | Heater, ventilation, and air conditioning control |
| 6 | Tilt and telescoping steering column |
| 8 | Data link connector |
| 9 | Spare |
| 10 | Shunt |
| 11 | Body control module 1 |
| 12 | Body control module 5 |
| 13 | Body control module 6 |
| 14 | Spare |
| 15 | Body control module 7 |
| 16 | Transmission control module |
| 17 | Spare |
| 18 | Spare |
| 19 | Spare |
| 20 | Spare |
| 21 | Spare |
| 22 | Sensing diagnostic module / Automatic occupant sensing |
| 23 | Radio / DVD / Heater, ventilation, and air conditioning control |
| 24 | Display |
| 25 | Heated steering wheel |
| 26 | Wireless charger |
| 27 | Steering wheel controls |
| 28 | Spare |
| 29 | Visor vanity lamp |
| 30 | Spare |
| 31 | Spare |
| 32 | Spare |
| 33 | Front heater, ventilation, and air conditioning blower |
| CB1 | Retained accessory power / Accessory power outlet |
| CB7 | Spare |
| K10 | Retained accessory power / Accessory |
| K605 | Logistics |
| K644 | Spare |
Rear Compartment Fuse Block
| № | Usage |
|---|---|
| *1 | Rear driver control module / DC DC transformer |
| 2 | Left window |
| 3 | Body control module 8 |
| *4 | A/C inverter |
| 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 |
| 12 | OnStar (if equipped) |
| 13 | Right window |
| 14 | Electric parking brake |
| 15 | Not used |
| 16 | Trunk release |
| *17 | Run relay |
| *18 | Logistics relay |
| *19 | Not used |
| 20 | Rear window defogger relay |
| 21 | Mirror window module |
| 22 | Spare |
| 23 | Canister vent |
| 24 | Body control module 2 |
| *25 | Rear vision camera |
| *26 | Front ventilated seats |
| *27 | SBZA / LDW / EOCM |
| *28 | Trailer / Sunshade |
| *29 | Rear heated seats |
| *30 | Semi-active damping system |
| *31 | Transfer case control module / Rear control drive module |
| 32 | Theft module/ Universal garage door opener / Rain sensor |
| *33 | UPA |
| *34 | Radio/DVD |
| 35 | Not used |
| *36 | Trailer |
| 37 | Fuel pump / Fuel system control module |
| 38 | Not used |
| 39 | Not used |
| 40 | Not used |
| 41 | Not used |
| *42 | Memory seat module |
| 43 | Body control module 3 |
| 44 | Not used |
| 45 | Battery regulated voltage control |
| 46 | Engine control module battery |
| 47 | Not used |
| 48 | Not used |
| *49 | Trailer module |
| 50 | Door lock security |
| 51 | Rear closure release |
| 52 | Spare |
| 53 | Not used |
| 54 | Door lock security |
| 55 | Not used |
| *56 | Fuel door |
| * Optional | |