Ford F-750 (2021-2022) – fuse and relay box
Diagrams of fuse and relay boxes – Ford F-750
Applies to vehicles manufactured in the years:
2021, 2022.
Fuse box in passenger compartment
The fuse panel is located in the passenger footwell. Remove the panel cover to access the fuses. Pull the fuse panel cover towards you to remove it. When the panel clips are unhooked, the panel can fall easily.
| Number | Amperes [A] | Description |
|---|---|---|
| 1 | – | Not used. |
| 2 | 10 A. | Right and left front door lock switch. Telescopic mirror switch. Front and right window switch (two windows). Right and left windshield motor. Inverter. |
| 3 | 7.5 amps | Mirror power switch. |
| 4 | 20 A. | Auxiliary translator module. |
| 5 | – | Not used. |
| 6 | – | Not used. |
| 7 | 10 A. | Power for the smart data link connector. Air brake diagnostic connector. |
| 8 | – | Not used. |
| 9 | – | Not used. |
| 10 | – | Not used. |
| 11 | – | Not used. |
| 12 | 7.5 amps | Intelligent data link connector. Proprietary wired device (2021). |
| 13 | 7.5 amps | Group. Steering column control module. |
| 14 | – | Not used. |
| 15 | 15 A. | Air conditioning module. |
| 16 | – | Not used. |
| 17 | – | Not used. |
| 18 | 7.5 amps | Yaw sensor. Electronic stability control and non-electric stability control. |
| 19 | 5 A. | 2022: Telematics control unit module. |
| 20 | 5 A. | Ignition switch. |
| 21 | 5 A. | 2021: Exhaust brake switch. |
| 22 | – | Not used. |
| 23 | 30 A. | Left windshield motor. |
| 24 | – | Not used. |
| 25 | – | Not used. |
| 26 | 30 A. | Right front engine window. |
| 27 | – | Not used. |
| 28 | – | Not used. |
| 29 | 15 A. | Folding mirror relay |
| 30 | 5 A. | Brake signal for air brake. Customer access stop lamp signal. Brake isolation relay. Trailer brake lamps relay. |
| 31 | 10 A. | Upfitter interface module. Radio frequency remote receiver. |
| 32 | 20 A. | Radio. |
| 33 | – | Not used. |
| 34 | – | Not used. |
| 35 | 5 A. | Towing switch. |
| 36 | 15 A. | Lane departure warning camera. |
| 37 | – | Not used. |
| 38 | 30 A. | Left-hand power window switch (four windows). |
Engine compartment fuse box
| Number | Amperes [A] | Description |
|---|---|---|
| 1 | 20 A. | Horn. |
| 2 | 40 A. | Blower motor. Blower motor control. |
| 3 | 20 A. | 2022: Upfit – frame. |
| 4 | 30 A. | Starter. |
| 5 | – | Not used. |
| 6 | 20 A. | Upfitter 4. |
| 8 | – | Not used. |
| 10 | – | Not used. |
| 12 | – | Not used. |
| 13 | 10 A. | Run / run backup. Remote A / C module relays (2022). |
| 14 | 10 A. | Adaptive cruise control. |
| 15 | 10 A. | Blower motor relay. |
| 16 | 20 A. | Dehumidifier. |
| 17 | 10 A. | Powertrain control module – ignition condition, power. Glow plug control module – ignition condition, diesel power. |
| 18 | 10 A. | Activation / activation of the anti-lock braking system. |
| 19 | 10 A. | Transmission Control Module Ignition Condition Running power (diesel). |
| 20 | 30 A. | Windshield wiper motor. |
| 21 | – | Not used. |
| 22 | – | Not used. |
| 23 | 10 A. | Alternator 2 (dual alternator only). |
| 24 | 40 A. | The body control module enables the power bus 2. |
| 25 | 50 A. | The body control module enables the power bus 1. |
| 26 | – | Not used. |
| 27 | 20 A. | Built-in battery power supply. |
| 28 | – | Not used. |
| 29 | 10 A. | Alternator 1 in line A. |
| 30 | – | Not used. |
| 31 | 60 A. | Hydromax pump. |
| 32 | 20 A. | Powertrain control module. |
| 33 | 20 A. | Canister venting solenoid valve (gas). Canister purge solenoid (gas). 11 variable valve timing actuator (gas). Heated exhaust gas oxygen sensor (gas). Urea tank power (diesel). Cooled exhaust gas recirculation (diesel) bypass valve. |
| 34 | 10 A. | A / C clutch relay. Power supply for the 3 customer access vehicle. Variable oil pump (diesel). Cooling fan (diesel). Fan clutch (gas). Exhaust brake switch (2022). |
| 35 | 20 A. | Coil on plug (gas). Urea tank (diesel). Glow plug controller (diesel). Nitric oxide sensor control module (diesel fuel). Diesel particle sensor. |
| 36 | 10 A. | Control value of the volume of fuel (diesel). Fuel pressure regulator (diesel). |
| 37 | – | Not used. |
| 38 | – | Not used. |
| 39 | – | Not used. |
| 41 | 30 A. | Trailer brake control module. |
| 43 | 30 A. | 2022: Upfit – Landing Gear Dashboard. |
| 45 | – | Not used. |
| 46 | 10 A. | A / C clutch solenoid. |
| 47 | 40 A. | Upfitter 1. |
| 48 | 20 A. | Gear upfitter and accessory feeder. |
| 49 | 30 A. | Pump electronics module (gas). Fuel pump (diesel). |
| 50 | 15 A. | Injector power (gas). |
| 51 | 20 A. | Power point # 1. |
| 52 | – | Not used. |
| 53 | 30 A. | Trailer tow lamp. |
| 54 | – | Not used. |
| 55 | 20 A. | Upfitter relay 3. |
| 56 | – | Not used. |
| 58 | 5 A. | USB powered. |
| 59 | 10 A. | 2022: U-Haul park lamps. |
| 60 | 10 A. | Dual fuel (diesel) tank selector switch. |
| 61 | – | Not used. |
| 62 | – | Not used. |
| 63 | 20 A. | Driver seat compressor. |
| 64 | 20 A. | Passenger seat compressor. |
| 65 | 10 A. | 2022: Upfit – run activate channel. |
| 66 | 10 A. | Four-piece electromagnetic differential lock. |
| 67 | 10 A. | Hydromax relay power. |
| 69 | – | Not used. |
| 70 | 40 A. | Inverter. |
| 71 | 30 A. | Anti-lock braking system valves. |
| 72 | 10 A. | Brake switch (hydraulic brakes). Air pressure switch 1 and 2 of stop lamps (air brakes). |
| 73 | – | Not used. |
| 74 | 15 A. | Heated mirror |
| 75 | – | Not used. |
| 76 | 60 A. | Body control module battery supply. |
| 77 | 30 A. | Body control module voltage quality monitor power supply. |
| 78 | 10 A. | Transmission module (diesel). |
| 79 | 5 A. | Hydromax pump monitoring. |
| 80 | 10 A. | Backup trailer towing signal. |
| 81 | – | Not used. |
| 82 | 5 A. | Upfitter switch (factory location for ignition power). |
| 83 | 5 A. | Upfitter switch (optional power point at all times). |
| 84 | – | Not used. |
| 85 | – | Not used. |
| 86 | – | Not used. |
| 87 | – | Not used. |
| 88 | 10 A. | Cargo lamps. |
| 89 | – | Not used. |
| 91 | – | Not used. |
| 93 | – | Not used. |
| 94 | – | Not used. |
| 95 | 20 A. | Stop lamps. Trailer brake lamps. |
| 96 | – | Not used. |
| 97 | – | Not used. |
| 98 | 30 A. | Charging the trailer tow battery. |
| 99 | 40 A. | Upfitter relay 2. |
| 100 | 25 A. | Glow plug controller (diesel). |
| 101 | – | Not used. |
| 102 | – | Not used. |
| 103 | – | Not used. |
| 104 | – | Not used. |
| 105 | 15 A. | Stop towing the trailer and turn on the relay. |