Cadillac CT6 (2016 – 2018) – fuse box diagram
Year of production: 2016, 2017, 2018
Engine compartment fuse block
The underhood fuse block is on the driver side of the engine compartment.
| № | Description |
|---|---|
| 1 | 2016-2017: Traction power inverter 2 2018: Not Used |
| 2 | Power coolant pump |
| 3 | Not Used |
| 4 | Traction power inverter 1 |
| 5 | Transmission/Ignition |
| 6 | Not Used |
| 7 | 2016-2017: Starter 2 2018: Starter motor |
| 8 | 2016-2017: Starter 1 2018: Starter pinion |
| 9 | Horn |
| 10 | Not Used |
| 11 | 2016-2017: Right LED 2018: Not Used |
| 12 | 2016-2017: Left LED 2018: Not Used |
| 13 | Left and right high-beam headlamps |
| 14 | Air conditioning control relay |
| 15 | 2016-2017: Starter 2 relay 2018: Starter motor relay |
| 16 | 2016-2017: Starter 1 relay 2018: Starter pinion relay |
| 17 | Run/Crank relay |
| 18 | Right cornering LED |
| 19 | 2016-2017: Headlamp low-beam relay 2018: Not Used |
| 20 | High-beam headlamp relay |
| 21 | Air conditioning clutch |
| 22 | Not Used |
| 23 | Coolant heater control module |
| 24 | Coolant pump |
| 25 | Coolant pump relay |
| 26 | HI fuel |
| 27 | Steering column lock |
| 28 | Rear heated seats |
| 29 | Front heated seats |
| 30 | Not Used |
| 31 | 2016-2017: LED LGT BAT 2018: HDLP/DRL/ Right headlamp |
| 32 | Air conditioning control module |
| 33 | 2016-2017: AIR solenoid 2018: Not Used |
| 34 | Not Used |
| 35 | 2016-2017: Engine control module 2018: Engine control module IGN2 |
| 36 | 2016-2017: Engine control module 2 2018: Engine control module IGN1 |
| 37 | Coolant pump Ignition coils–odd |
| 38 | Ignition coils–even Non walk 2 |
| 39 | Non walk |
| 40 | Instrument cluster |
| 41 | Not Used |
| 42 | Fuel pump power module |
| 43 | Instrument panel body/Ignition |
| 44 | Aeroshutter |
| 45 | Washer |
| 46 | Front sensor |
| 47 | Left cornering LED |
| 48 | 2016-2017: AIR solenoid relay 2018: Not Used |
| 49 | 2016-2017: Air pump relay 2018: Not Used |
| 50 | Engine control module relay |
| 51 | Wiper speed relay |
| 52 | Wiper control relay |
| 53 | Headlamp control relay |
| 54 | Not Used |
| 55 | Not Used |
| 56 | 2016-2017: Air pump 2018: Not Used |
| 57 | Not Used |
| 58 | 2016-2017: Instrument panel electronic center 2018: Not Used |
| 59 | Not Used |
| 60 | ABS pump |
| 61 | Front wiper |
| 62 | Headlamp leveling |
| 63 | Electric brake booster module |
| 64 | Not Used |
| 65 | Not Used |
| 66 | Transfer case control module |
| 67 | Electric brake booster |
| 68 | Rear seat entertainment display |
| 69 | 2016: Not Used 2017-2018: Rechargeable energy storage system coolant pump |
| 70 | Not Used |
| 71 | ABS valve |
| 72 | Not Used |
| 73 | Not Used |
Instrument panel fuse block
The instrument panel fuse block is behind the driver side instrument panel storage compartment.
| № | Description |
|---|---|
| 1 | 2016-2017: Traction power inverter 2 2018: Not Used |
| 2 | Power coolant pump |
| 3 | Not Used |
| 4 | Traction power inverter 1 |
| 5 | Transmission/Ignition |
| 6 | Not Used |
| 7 | 2016-2017: Starter 2 2018: Starter motor |
| 8 | 2016-2017: Starter 1 2018: Starter pinion |
| 9 | Horn |
| 10 | Not Used |
| 11 | 2016-2017: Right LED 2018: Not Used |
| 12 | 2016-2017: Left LED 2018: Not Used |
| 13 | Left and right high-beam headlamps |
| 14 | Air conditioning control relay |
| 15 | 2016-2017: Starter 2 relay 2018: Starter motor relay |
| 16 | 2016-2017: Starter 1 relay 2018: Starter pinion relay |
| 17 | Run/Crank relay |
| 18 | Right cornering LED |
| 19 | 2016-2017: Headlamp low-beam relay 2018: Not Used |
| 20 | High-beam headlamp relay |
| 21 | Air conditioning clutch |
| 22 | Not Used |
| 23 | Coolant heater control module |
| 24 | Coolant pump |
| 25 | Coolant pump relay |
| 26 | HI fuel |
| 27 | Steering column lock |
| 28 | Rear heated seats |
| 29 | Front heated seats |
| 30 | Not Used |
| 31 | 2016-2017: LED LGT BAT 2018: HDLP/DRL/ Right headlamp |
| 32 | Air conditioning control module |
| 33 | 2016-2017: AIR solenoid 2018: Not Used |
| 34 | Not Used |
| 35 | 2016-2017: Engine control module 2018: Engine control module IGN2 |
| 36 | 2016-2017: Engine control module 2 2018: Engine control module IGN1 |
| 37 | Coolant pump Ignition coils–odd |
| 38 | Ignition coils–even Non walk 2 |
| 39 | Non walk |
| 40 | Instrument cluster |
| 41 | Not Used |
| 42 | Fuel pump power module |
| 43 | Instrument panel body/Ignition |
| 44 | Aeroshutter |
| 45 | Washer |
| 46 | Front sensor |
| 47 | Left cornering LED |
| 48 | 2016-2017: AIR solenoid relay 2018: Not Used |
| 49 | 2016-2017: Air pump relay 2018: Not Used |
| 50 | Engine control module relay |
| 51 | Wiper speed relay |
| 52 | Wiper control relay |
| 53 | Headlamp control relay |
| 54 | Not Used |
| 55 | Not Used |
| 56 | 2016-2017: Air pump 2018: Not Used |
| 57 | Not Used |
| 58 | 2016-2017: Instrument panel electronic center 2018: Not Used |
| 59 | Not Used |
| 60 | ABS pump |
| 61 | Front wiper |
| 62 | Headlamp leveling |
| 63 | Electric brake booster module |
| 64 | Not Used |
| 65 | Not Used |
| 66 | Transfer case control module |
| 67 | Electric brake booster |
| 68 | Rear seat entertainment display |
| 69 | 2016: Not Used 2017-2018: Rechargeable energy storage system coolant pump |
| 70 | Not Used |
| 71 | ABS valve |
| 72 | Not Used |
| 73 | Not Used |
Rear (luggage) compartment fuse block
The rear compartment fuse block is behind a cover on the passenger side of the rear compartment.
Luggage Compartment – Without Super Cruise (2016-2018)
| № | Description |
|---|---|
| F01 | UCAP |
| F02 | Trunk power outlet |
| F03 | Driver window motor |
| F04 | Not Used |
| F05 | Canister vent |
| F06 | Right rear memory seat |
| F07 | Body control module 7 |
| F08 | Driver seat adjustment switch |
| F09 | Passive entry Passive start |
| F10 | Rear subwoofer amplifier |
| F11 | Driver memory seat module |
| F12 | Not Used |
| F13 | Not Used |
| F14 | Rear seat memory/ heated |
| F15 | Left front amplifier |
| F16 | Right front seat |
| F17 | Rear heated seat |
| F18 | Regulated voltage control battery |
| F19 | 2016-2017: Door mirror switch 2018: Driver, passenger door window/mirror/ driver seat adjustment |
| F20 | Not Used |
| F21 | Vehicle integration control module |
| F22 | Not Used |
| F23 | Rear closure |
| F24 | Not Used |
| F25 | Left motorized safety belt pretensioner |
| F26 | Rear defogger |
| F27 | Right front amplifier |
| F28 | Amplifier |
| F29 | Sunroof |
| F30 | Body control module 2 |
| F31 | Body control module 6 |
| F32 | Exterior heated mirror |
| F33 | 2016-2017: Right window 2018: Right mirror |
| F34 | Power trunk module |
| F35 | On-board charging module |
| F36 | Alarm siren module |
| F37 | DC AC inverter |
| F38 | Rear blower |
| F39 | Fuel pump power |
| F40 | Not Used |
| F41 | Rear seat power outlet |
| F42 | Left rear memory seat |
| F43 | Not Used |
| F44 | Rear closure release switch/lift gate module |
| F45 | Auxiliary audio/Video/Radio |
| F46 | External object calculating Side blind zone alert Radar short range sensor Long range radar sensors (2018) |
| F47 | Not Used |
| F48 | Right front seat |
| F49 | Memory bolster module |
| F50 | Body control module 1 |
| F51 | Transmission control module |
| F52 | Parking assist |
| F53 | Heated, cooled or ventilated seats (if equipped) |
| F54 | 2016: Rain sensor Power sounder Intrusion Universal remote system 2017-2018: Headliner |
| F55 | Front memory seat module |
| F56 | Evaporative emissions leak check module |
| F57 | Voltage current temperature module |
| F58 | Not Used |
| F59 | Engine control module power |
| F60 | Right motorized safety belt pretensioner |
| F61 | Parking lamps |
| F62 | Not Used |
| F63 | Not Used |
| F64 | Engine control module Ignition |
| F65 | Rear glass sunshade |
| F66 | Rear vision camera/Interior rearview mirror |
| F67 | 2016: DC DC converter Air quality sensor 2017: Run/Crank/MISC 2018: Run/crank misc/DC DC converter/air quality sensor |
| F68 | Damping control module |
| F69 | 2016: Not Used 2017-2018: Television tuner module |
| F70 | Not Used |
| F71 | Not Used |
| F72 | Not Used |
| F73 | Not Used |
| F74 | Not Used |
| F75 | Not Used |
| Relays | |
| R1 | Rear seat power outlet relay |
| R2 | Fuel pump relay |
| R3 | Run/Crank relay |
| Relays | Usage |
| R1 | Rear seat power outlet relay |
| R2 | Fuel pump relay |
| R3 | Run/Crank relay |
Luggage Compartment – With Super Cruise (2018)
| № | Usage |
|---|---|
| F01 | Not Used |
| F02 | Body control module 2 and 4 |
| F03 | Left rear external object calculating module |
| F04 | Steering wheel display touch sensor |
| F05 | Not Used |
| F06 | Not Used |
| F07 | Left front and right rear short range radar sensor/Camera image processing module |
| F08 | Driver memory seat module |
| F09 | Column friction device |
| F10 | Left headlamp |
| F11 | Not Used |
| F12 | Not Used |
| F13 | Left front subwoofer |
| F14 | Rear blower |
| F15 | Left window |
| F16 | Canister vent |
| F17 | Rear heated seat |
| F18 | Rear subwoofer |
| F19 | Damping control module |
| F22 | Not Used |
| F23 | Left front motorized seat belt pretensioner |
| F24 | Body control module 7 |
| F25 | Passive entry/Passive start |
| F26 | Rear closure latch |
| F27 | Amplifier |
| F28 | Rear defogger |
| F29 | Ultrasonic park assist module |
| F30 | Body control module 1 |
| F31 | Driver monitoring system |
| F32 | Driver mirror switch |
| F33 | Seat adjustment switch |
| F34 | Left front memory seat |
| F35 | Right rear memory seat |
| F36 | Heated mirror |
| F37 | Not Used |
| F38 | Transmission control module |
| F39 | Not Used |
| F40 | Not Used |
| F41 | Not Used |
| F42 | Not Used |
| F43 | Power trunk module |
| F44 | Right front memory seat |
| F45 | Not Used |
| F46 | Right window |
| F47 | Engine control module battery |
| F48 | Right front subwoofer |
| F49 | Body control module 6 |
| F50 | Regulated voltage control battery |
| F51 | DC AC inverter |
| F52 | Fuel pump power module |
| F53 | Rear seat auxiliary power outlet |
| F54 | Left rear memory seat |
| F55 | Not Used |
| F56 | Rear closure release switch/Liftgate module |
| F57 | Rear left and rear center short range and long range radar sensor/Rt rear EOCM |
| F58 | Radio |
| F59 | Not Used |
| F60 | Memory bolster module |
| F61 | Not Used |
| F62 | Ventilated seat |
| F63 | Headliner |
| F64 | Passenger memory seat module |
| F65 | Right front short range radar sensor/ Advance driver assist map |
| F66 | Television tuner module |
| F67 | Not Used |
| F68 | Not Used |
| F69 | Not Used |
| F70 | Right front motorized seat belt pretensioner |
| F71 | Rear heated seat module |
| F72 | Sunroof |
| F73 | Rear vision camera/ Inside rear view mirror/Air quality sensor |
| F74 | Rear window sunshade |
| F75 | Engine control module ignition |
| F76 | Misc run crank/ Energy storage control module/ Camera |
| F77 | Trunk auxiliary power outlet |
| F78 | Rear HVAC display |
| F79 | Not Used |
| F80 | Not Used |
| F81 | Not Used |
| F82 | Not Used |
| F83 | Not Used |
| F84 | Not Used |
| F85 | Not Used |
| F86 | Not Used |
| F87 | Not Used |
| Relays | |
| R1 | Rear seat auxiliary power outlet |
| R2 | Fuel pump |
| R3 | Run/Crank |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.