Cadillac ATS (2018 – 2019) – fuse and relay box diagram
Year of production: 2018, 2019
The Cadillac ATS, a compact executive 4-door sedan, was manufactured from 2013 to 2019. This article provides fuse box diagrams for the 2018 and 2019 models, along with information on the location of the fuse panels within the vehicle and details on the function and layout of each fuse and relay.
Engine compartment
Fuse box location
The underhood fuse block is on the passenger side of the engine compartment.
Fuse box diagram
Assignment of the fuses and relays in the engine compartment (2018 – 2019)
| № | 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 |
| 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 |
| 26 | Not Used |
| 27 | –/Heated seat 2 |
| 28 | –/Reverse lock out |
| 29 | Adaptive forward lighting, Automatic headlamp leveling/ Pedestrian protection |
| 30 | Not Used |
| 31 | Passenger window switch |
| 32 | Not Used |
| 33 | Sunroof |
| 34 | Front wiper |
| 35 | Steering column lock |
| 36 | Rear bussed electrical center/Ignition |
| 37 | –/Malfunction Indicator Lamp/ Ignition |
| 38 | Aeroshutter |
| 39 | O2 sensor/Emissions |
| 40 | Ignition coil even/O2 sensor |
| 41 | Ignition coil odd |
| 42 | Engine control module |
| 43 | Not Used |
| 44 | Not Used |
| 45 | Washer |
| 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 |
| 55 | Not Used |
| 56 | Transmission control module |
| 64 | Adaptive headlamp leveling |
| 65 | Left HID headlamp |
| 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 |
| 74 | Starter 1 |
| 75 | Air conditioning clutch |
| 76 | Not Used |
| Relays | |
| 8 | Headlamp washer |
| 23 | Wiper control |
| 24 | Wiper speed |
| 25 | Engine control module |
| 46 | Rear washer |
| 47 | Front washer |
| 54 | Coolant pump |
| 57 | Low-beam headlamp relay |
| 58 | High-beam headlamp |
| 59 | Run/Crank |
| 60 | Starter 2 |
| 61 | Vacuum pump |
| 62 | Starter 1 |
| 63 | Air conditioning control |
| 70 | Horn |
Passenger compartment
Fuse box location
The instrument panel fuse block is in the end of the driver side of the instrument panel.
Fuse box diagram
Assignment of the fuses and relays in the engine compartment (2018 – 2019)
| № | Usage |
|---|---|
| 2 | Cupholder motor |
| 3 | Electric steering column lock |
| 4 | Not Used |
| 5 | Not Used |
| 6 | Tilt and telescopic steering column |
| 8 | Data link connector |
| 9 | Glovebox release |
| 10 | Shunt |
| 11 | Body control module 1 |
| 12 | Body control module 5 |
| 13 | Body control module 6 |
| 14 | Not Used |
| 15 | Body control module 7 |
| 16 | Transmission control module |
| 17 | Not Used |
| 18 | Not Used |
| 19 | Auxiliary power outlet |
| 20 | Lighter |
| 21 | Wireless charger |
| 22 | Sensing diagnostic module/Automatic occupant sensing |
| 23 | Radio/DVD/Heating, ventilation/Air conditioning control |
| 24 | Display |
| 25 | Heated steering wheel |
| 26 | Wireless charger |
| 27 | Steering wheel controls |
| 28 | Not Used |
| 29 | Visor vanity lamp |
| 30 | Not Used |
| 31 | Retained accessory power/Accessory |
| 32 | Not Used |
| 33 | Front heating, ventilation/Air conditioning control blower |
| Circuit Breakers | |
| CB1 | Auxiliary power outlet |
| CB7 | Not Used |
| Relays | |
| K10 | Retained accessory power/Accessory |
| K605 | Logistics |
| K644 | Retained accessory power/Accessory / Glovebox release |
Rear compartment
Fuse box location
The rear compartment fuse block is behind a cover on the driver side of the rear compartment.
Fuse box diagram
Assignment of the fuses and relays in the rear compartment (2018 – 2019)
| № | Usage |
|---|---|
| 1 | Rear driver control module/DC DC transformer |
| 2 | Left window |
| 3 | Body control module 8 |
| 4 | Alternate current 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 |
| 19 | Logistics |
| 21 | Mirror window module |
| 22 | Not Used |
| 23 | Canister vent |
| 24 | Body control module 2 |
| 25 | Rear vision camera |
| 26 | Front ventilated seats |
| 27 | Side blind zone alert/ Lane departure warning/External object calculating module |
| 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 | Ultrasonic parking assist |
| 34 | Radio/DVD |
| 35 | – /Exhaust valve (V-series) |
| 36 | Trailer |
| 37 | Fuel system control module |
| 38 | Fuel pump prime/ Exhaust valve (V-series) |
| 39 | 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 |
| 53 | Not Used |
| 55 | Not Used |
| Relays | |
| 17 | Trailer |
| 18 | Logistics |
| 20 | Rear window defogger |
| 40 | Run crank 2 (V-series) |
| 41 | Fuel pump prime/ Run crank 2 |
| 50 | Child door lock security |
| 51 | Rear closure |
| 52 | Rear closure 2 |
| 54 | Door lock security |
| 56 | Fuel door |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
