Table of Contents
In this article, we take a detailed look at the fuse box diagrams for the fourth-generation Jeep Wrangler (JL chassis) across model years 2017, 2018, 2019, 2020, and 2021.
Fuses F43, F45, and F52 in the engine compartment protect the cigarette lighter and auxiliary power outlet circuits.
Engine Compartment
Located near the battery, behind the protective plastic cover.
Gaining access to the fuse box.
General view of the fuse box assembly.
| Fuse Box Diagram | ||
|---|---|---|
|
||
| No. | Circuit / Component Protected | Rating (A) |
| MICRO FUSES | ||
| F01 | Spare | - |
| F03 | Intelligent Battery Sensor (IBS) | 5 |
| F04 | Fuel Pump Motor / Fuel Pump Control Module (FPCM) | 20 |
| F05 | Security Gateway Module | 5 |
| F06 | Spare | - |
| F07 | Low-Temperature Radiator (LTR) Cooling Pump – If Equipped | 15 |
| F08 | Transmission Control Module (TCM – 8HP Cygnus) | 15 |
| F09 | Spare | - |
| F10 | Keyless Ignition Node (KIN) / Radio Frequency (RF) Hub / Electronic Steering Column Lock (ESCL) | 15 |
| F102 | Dual USB Port | 15 |
| F103 | Heavy-Duty Auxiliary #3 – If Equipped | 15 |
| F104 | Power Pack Unit (PPU) Coolant Pump – If Equipped | 15 |
| F105 | Integrated Center Stack (ICS) / Heating, Ventilation, and Air Conditioning (HVAC) | 10 |
| F107 | Trailer Tow Stop / Turn Light (Left) – If Equipped | 20 |
| F108 | Heavy-Duty Auxiliary #4 – If Equipped | 15 |
| F109 | Trailer Tow Stop / Turn Light (Right) – If Equipped | 20 |
| F11 | Universal Customer Interface (UCI) Port (USB & AUX) | 10 |
| F12 | Audio Amplifier | 25 |
| F13 | Spare | - |
| F14 | Spare | - |
| F15 | Instrument Panel Cluster (IPC) / Switch Bank (Heavy-Duty Electrical Package) | 15 |
| F16 | Spare | - |
| F17 | Spare | - |
| F18 | Air Conditioning (A/C) Compressor Clutch | 10 |
| F19 | Spare | |
| F21 | Rear Wiper Motor | 20 |
| F22 | Engine Control Module (ECM) / Powertrain Control Module (PCM) / Motor Generator Unit (MGU) Wake-Up / Power Pack Unit (PPU) Wake-Up | 10 |
| F23 | Powertrain Control Module (PCM) / Engine Control Module (ECM) | 10 |
| F24 | Spare | - |
| F25 | Shift-by-Wire Module (SBW) | 10 |
| F30 | Spare | - |
| F31 | Diagnostic Port (OBD-II) | 10 |
| F32 | HVAC Control Module / Steering Column Lock (SCL) / Occupant Classification Module (OCM) / Driver Presence Detection Module (DPDM) | 10 |
| F33 | ParkSense System (PTS) / Infrared Camera Module (IRCM) / Airbag Disable Indicator | 10 |
| F34 | Electronic Stability Control (ESC) / Electro-Hydraulic Power Steering (EHPS) / Smart Bar Control Module (SBCM) Wake-Up | 10 |
| F39 | Spare | - |
| F40 | Drivetrain Control Module (DTCM) / Front & Rear Axle Lock | 15 |
| F41 | Instrument Cluster (IC) / Security Gateway (SGW) Wake-Up | 15 |
| F42 | Power Control Relay Feed (Stop/Start System) / Reserved (Belt Starter Generator) – If Equipped | 10 |
| F43 | Cigarette Lighter / Cargo Area Power Outlet (Battery Power) | 20 |
| F44 | Infrared Camera (IRCAM) Heaters | 10 |
| F45 | Cigarette Lighter / Cargo Area Power Outlet (Ignition Switched) | 20 |
| F46 | Automatic Headlamp Leveling Module / Leveling Motor / Headlamp Switch | 10 |
| F47 | Spare | - |
| F48 | Spare | - |
| F49 | Occupant Restraint Controller (ORC) | 10 |
| F50 | Heavy-Duty Auxiliary Power – If Equipped | 10 |
| F51 | Digital TV / USB / Inside Rearview Mirror (ISRVM) / Compass Module (CSGM) | 10 |
| F52 | Cigarette Lighter / Front Power Outlet | 20 |
| F53 | Spare | - |
| F54 | Spare | - |
| F55 | Spare | - |
| F56 | In-Cabin Temperature Sensor | 10 |
| F57 | Driver Heated Seat | 20 |
| F58 | Passenger Heated Seat | 20 |
| F59 | Spare | - |
| F60 | Heated Steering Wheel Module (CSWM) | 15 |
| F61 | Left & Right Blind Spot Sensors (LBSS / RBSS) | 10 |
| F62 | Spare | - |
| F63 | Occupant Restraint Controller (ORC) | 10 |
| F64 | Spare | - |
| F65 | Spare | - |
| F67 | Spare | - |
| F68 | Spare | - |
| F69 | Motor Generator Unit (MGU) / Belt Starter Generator (BSG) – If Equipped | 5 |
| F70 | Fuel Injectors / Ignition Coils (Gasoline) / Glow Plug Module (Diesel) | 25 |
| F71 | Spare | - |
| F72 | Heavy-Duty Electrical Accessory Package – If Equipped | 10 |
| F75 | Power Pack Unit – Battery Pack Control Module & Auxiliary Power Module (PPU-BPCM & APM) / Belt Starter Generator (BSG) – If Equipped | 10 |
| F76 | Engine Control Module (Gasoline) / Powertrain Control Module (Diesel) | 20 |
| F77 | Heated Exterior Mirrors | 10 |
| F78 | Compass / Vehicle Intrusion Alarm & Siren / Intrusion Sensors | 10 |
| F79 | Smart Bar Control Module | 20 |
| F80 | Powertrain Control Module (PCM) | 15 |
| F85 | Particulate Matter (PM) Sensor – If Equipped | 10 |
| F87 | DEF Supply / Purge Pump – If Equipped | 10 |
| F89 | Steering Column Control Module (SCCM) / Cruise Control / Digital TV | 10 |
| F91 | Horn | 20 |
| F94 | Tire Pressure Monitor (TPM) / Radio Frequency (RF) Hub System | 10 |
| F95 | Spare | - |
| F96 | Power Mirror Switch | 10 |
| F97 | Radio / Telematics Box Module (TBM) | 20 |
| F98 | Switch Bank – Heavy-Duty Electrical / Off-Road | 10 |
| F99 | Spare | - |
| CARTRIDGE FUSES | ||
| F02 | Starter Motor | 40 |
| F20 | Central Body Controller (CBC) 1 – Interior Lights | 30 |
| F26 | Central Body Controller (CBC) 2 – Exterior Lights #1 | 40 |
| F27 | Front Windshield Wipers | 30 |
| F28 | Central Body Controller (CBC) 3 – Power Locks | 40 |
| F29 | Central Body Controller (CBC) 4 – Exterior Lights #2 | 40 |
| F35 | Brake Vacuum Pump – If Equipped | 30 |
| F36 | Trailer Tow Module – If Equipped | 30 |
| F37 | Trailer Tow 7-Way Connector – If Equipped | 30 |
| F38 | Engine Control Module (ECM) | 20 |
| F66 | Front HVAC Blower Motor | 40 |
| F73 | Power Soft Top (Left) – If Equipped | 20 |
| F74 | Power Soft Top (Right) – If Equipped | 20 |
| F81 | Rear Window Defroster (EBL) | 30 |
| F82 | Fuel Heater – If Equipped | 30 |
| F83 | Glow Plugs – If Equipped | 60 |
| F84 | Urea / Reductant Heater Control Unit – If Equipped | 30 |
| F86 | Brake Vacuum Pump #2 – If Equipped | 30 |
| F88 | NOx Sensor #1 / #2 – If Equipped | 20 |
| F90 | Trailer Tow Parking Lights – If Equipped | 20 |
| F92 | Heavy-Duty Auxiliary #2 – If Equipped | 40 |
| F93 | Heavy-Duty Auxiliary #1 – If Equipped | 40 |
| F100 | Electronic Stability Control (ESC) ECU & Valves | 30 |
| F101 | Drivetrain Control Module (DTCM) | 30 |
| F106 | Electronic Stability Control (ESC) Pump Motor | 40 |
| F110 | Power Inverter | 30 |
| F111 | Trailer Tow Backup Lights – If Equipped | 20 |