2019 Nissan Frontier — Fuse Box Diagram & Amperage
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Quick answer
The 2019 Nissan Frontier has three fuse box locations:
- Under-hood fuse box (IPDM E/R): Located in the engine compartment, on the passenger side, near the battery.
- Cabin fuse box (Junction Block): Located inside the cabin, under the dashboard, to the left of the steering column, behind a kick panel.
- In-line fuse holders: Located near the positive battery terminal.
Under-hood Fuse Box (IPDM E/R) Diagram
This fuse box, technically called the Intelligent Power Distribution Module Engine Room (IPDM E/R), is located on the passenger side of the engine bay. You will need to remove the plastic cover to access the fuses and relays.
| Fuse # | Amp | Color | Circuit / Component Protected |
|---|---|---|---|
| 31 | 10A | Red | A/C Compressor Clutch |
| 32 | 15A | Blue | Heated Mirrors |
| 33 | 20A | Yellow | Fog Lights |
| 34 | 15A | Blue | Left Headlight (Low Beam) |
| 35 | 15A | Blue | Right Headlight (Low Beam) |
| 36 | 10A | Red | Left Headlight (High Beam) |
| 37 | 10A | Red | Right Headlight (High Beam) |
| 38 | 15A | Blue | Fuel Pump |
| 39 | 10A | Red | Ignition Coils |
| 40 | 10A | Red | Horn |
| 41 | 15A | Blue | Front Wiper |
| 43 | 20A | Yellow | Engine Control Module (ECM) |
| 44 | 15A | Blue | Starter Motor Relay |
| 45 | 10A | Red | A/C Clutch Relay |
| 47 | 15A | Blue | O2 Sensors |
| 48 | 15A | Blue | Variable Valve Timing (VVT) |
| 51 | 30A | Green | ABS Control Unit |
| 52 | 30A | Green | ABS Motor |
| 56 | 20A | Yellow | Trailer Tow Connector (7-pin) |
Relay Locations (Under-hood):
- ECM Relay
- Fuel Pump Relay
- Starter Relay
- A/C Clutch Relay
- Headlight Relays
- Fog Light Relay
- Horn Relay
Cabin Fuse Box (Junction Block) Diagram
This fuse box is located in the driver's side footwell, behind a small trim panel labeled "FUSE".
| Fuse # | Amp | Color | Circuit / Component Protected |
|---|---|---|---|
| 1 | 10A | Red | SRS Airbag Control Unit |
| 2 | 15A | Blue | 12V Power Outlet (Instrument Panel) |
| 3 | 10A | Red | Meters and Gauges |
| 4 | 10A | Red | Stop Lamps (Brake Lights) |
| 5 | 10A | Red | Interior Lamps |
| 6 | 15A | Blue | 12V Power Outlet (Center Console) |
| 7 | 15A | Blue | Heated Seats |
| 8 | 10A | Red | Turn Signals |
| 10 | 10A | Red | Ignition Switch |
| 12 | 15A | Blue | Blower Motor (Fan) |
| 13 | 15A | Blue | Blower Motor (Fan) |
| 15 | 15A | Blue | Audio / Infotainment System |
| 16 | 10A | Red | Transmission Control Module (TCM) |
| 18 | 10A | Red | Parking, License, and Tail Lamps |
| 19 | 15A | Blue | 4WD Control Unit |
| 20 | 15A | Blue | Power Door Locks |
Note: Fuse numbers and circuits can vary based on your vehicle's trim level and options. Always check the diagram on the fuse box cover to confirm. ## How to test a fuse
There are two main ways to test a fuse:
- Visual Inspection: Pull the fuse out of its slot and hold it up to the light. If the metal strip inside is broken or melted, the fuse is blown and needs to be replaced.
- Multimeter Test: For a more definitive test, you can use a multimeter set to the continuity setting. Touch the probes to each of the two metal tabs on top of the fuse. If the multimeter beeps, the fuse is good. If it doesn't, the fuse is blown.
Common blown fuses on this vehicle
- 12V Power Outlet / Cigar Lighter: If your 12V outlets stop working, check fuses #2 and #6 in the cabin fuse box. This is often caused by a faulty phone charger or other device plugged into the outlet.
- Radio / Infotainment: If your radio won't turn on, check fuse #15 in the cabin fuse box. If the fuse is good, there may be an issue with the radio itself.
- Headlights: If one of your headlights goes out, check the corresponding fuse in the under-hood fuse box (#34 or #35 for low beams, #36 or #37 for high beams). If the fuse is good, the bulb is likely burned out.
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Before you pull a fuse on the 2019 Nissan Frontier
- Use the label printed on the panel cover or the owner's manual for your exact build. Layouts change with options, model year and build date, so a chart for another truck can be wrong.
- Replace a blown fuse only with the same amp rating. A larger fuse can let wiring overheat.
- A fuse that blows again right away means a short or failing component downstream. Find the cause before replacing it again.
- A good fuse doesn't prove the circuit works — relays, grounds and connectors fail too.
- Disconnect the battery before working near high-current fuses or cables.
Learn more: How fuses, relays and truck electrical systems work
More specs for the 2019 Nissan Frontier
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
Fluid Type Specs
Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.
Coolant Capacity & Type
Total system capacity, OEM coolant spec, flush interval, bleed tips.
Transmission Fluid & Service
Trans model, fluid spec, capacity, filter PN, service interval.
Torque Specifications
Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.
Brake Pad & Rotor Specs
Pad PNs, rotor size, min thickness, caliper torque.
Tire Size & Pressure
OEM size, cold psi, bolt pattern, wheel size, TPMS.
Battery Size & Group
Group size, CCA, AGM/flooded, dimensions, reset note.
A/C Refrigerant & Oil
R-134a or R-1234yf, charge oz, PAG oil spec.
Bulb Sizes (Headlight, Tail, Fog)
Headlight, fog, tail, turn, reverse, interior.
Factory Maintenance Schedule
Service intervals by mileage, severe-duty notes, known issues.
Towing Capacity & Payload
Max tow, payload, GVWR/GCWR, hitch class by trim.
Serpentine Belt Routing & Length
Belt routing, length, rib count, OEM + aftermarket PNs.
Wheel Alignment Specifications
Camber, caster, toe ranges (front & rear), adjustability notes.
Paint Color Codes
All factory colors with paint codes, sticker location, touch-up tips.
Wiper Blade Sizes
Driver/passenger/rear blade size, attachment, OEM + cross-refs.
Spark Plug Type & Gap
Plug PN, gap, torque, interval by engine.
Transmission & Axle Gear Ratios
Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.
Key Fob Programming
DIY programming steps, FCC ID, fob PN, battery, transponder.
Same spec — other model years
Maintenance & repair guides
2019 Nissan Frontier Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
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