2020 Nissan Titan — Fuse Box Diagram & Amperage

As an ASE-certified master technician, I know that tracking down an electrical issue on a modern truck like the 2020 Nissan Titan can feel daunting. Whether your 12V accessory outlet stopped working, your radio went dead, or you’re dealing with a no-start condition, checking the fuses is always step one. Modern trucks rely heavily on electronic modules, and a simple blown fuse can take down entire systems.

Here is your comprehensive guide to the 2020 Nissan Titan fuse boxes, including locations, standard amperage ratings, and the circuits they protect.

Disclaimer: Fuse configurations can vary based on trim level, engine options, and towing packages. Always verify with the printed legend on the inside of your fuse box lid or your owner’s manual.

Quick Answer: 2020 Nissan Titan Fuse Box Locations

The 2020 Nissan Titan has three primary areas where fuses and relays are located:

1. Passenger Compartment Fuse Box: Located inside the cabin on the passenger side. It is positioned behind a trim cover on the right side of the passenger footwell/kick panel area.
2. Engine Compartment Fuse Box (IPDM E/R): The Intelligent Power Distribution Module Engine Room is located under the hood on the passenger side, near the firewall.
3. Fusible Link Block: Attached directly to the positive terminal of the battery under the hood. This protects main high-amperage power feeds.

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Passenger Compartment Fuse Box (Kick Panel)

This fuse box primarily protects interior electronics, lighting, and cabin accessories. To access it, remove the plastic cover on the passenger side kick panel.

Fuse #	Amp	Color	Circuit / Component Protected
1	10A	Red	Airbag Diagnosis Sensor Unit / SRS
2	10A	Red	Ignition / Push Button Start
3	15A	Blue	Blower Motor Relay / Climate Control
4	15A	Blue	Blower Motor Relay / Climate Control
5	10A	Red	Instrument Cluster / Meters
6	20A	Yellow	Power Outlets / Cigar Lighter (Console)
7	20A	Yellow	Power Outlets / 12V Socket (Dash)
8	15A	Blue	Audio System / Infotainment Display
9	10A	Red	Interior Illumination / Map Lights
10	10A	Red	Body Control Module (BCM)
11	20A	Yellow	Heated Seats (If equipped)
12	15A	Blue	Trailer Brake Controller (Cabin feed)
13	10A	Red	Data Link Connector (OBD2)
14	10A	Red	Stop Lamp Switch / Brake Switch
15	20A	Yellow	Power Windows / Door Locks

Note: The passenger compartment fuse box also contains the blower motor relay and accessory power relays built into the back of the panel or nearby harnesses.

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Engine Compartment Fuse Box (IPDM E/R)

The under-hood fuse box (Intelligent Power Distribution Module) houses critical powertrain fuses, exterior lighting, and heavy-duty relays. It is located on the passenger side of the engine bay near the firewall.

Fuse #	Amp	Color	Circuit / Component Protected
41	15A	Blue	Fuel Pump / Fuel Pump Relay
42	15A	Blue	Engine Control Module (ECM) / PCM
43	10A	Red	Alternator / Charging System
44	15A	Blue	Headlight Low Beam (Right)
45	15A	Blue	Headlight Low Beam (Left)
46	10A	Red	Headlight High Beam (Right)
47	10A	Red	Headlight High Beam (Left)
48	10A	Red	Tail / Park / License Plate Lights
49	10A	Red	A/C Compressor Clutch
50	30A	Green	Starter Motor / Starter Relay
51	10A	Red	Horn / Horn Relay
52	30A	Green	Anti-lock Braking System (ABS) Actuator
53	40A	Orange	Anti-lock Braking System (ABS) Motor
54	20A	Yellow	Trailer Turn/Stop Lamps
55	30A	Green	Trailer Brake / Trailer Tow Power

Relays in the IPDM

The under-hood IPDM also contains several non-serviceable (integrated) and serviceable relays, including:

• Starter Relay
• Fuel Pump Relay
• A/C Clutch Relay
• Cooling Fan Relays
• Ignition Relay

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Fusible Link Block (Battery Positive Terminal)

Attached directly to the positive battery terminal, this block contains high-amperage, bolt-in fuses that protect the main vehicle harnesses from catastrophic shorts.

Fuse #	Amp	Color	Circuit / Component Protected
A	250A	Black	Alternator / Main Power Feed
B	100A	Blue	EPS (Electronic Power Steering)
C	80A	Clear	Glow Plug (Diesel only, if equipped) / Main IPDM Feed
D	60A	Yellow	Radiator Fan Motor
E	40A	Green	BCM Power / Ignition Switch

Note: If one of these blows, you have a massive short to ground. Do not replace these without thoroughly inspecting the main wiring harnesses.

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How to Test a Fuse

As an ASE tech, I see plenty of people guess at a blown fuse by just looking at it. The visual check is okay, but a hairline fracture in the fuse element can trick your eyes. Here is the professional way to test them:

1. Grab a Digital Multimeter or Test Light: A 12V test light is the quickest tool for the job.
2. Turn the Key to the "ON" Position: Do not start the engine, but ensure the ignition is on so power is flowing to most circuits.
3. Probe the Fuse Terminals: Modern blade-style fuses have two tiny metal testing points exposed on the top.
4. Read the Results: Touch the test light or multimeter probe to one side of the fuse, then the other.
   • Good Fuse: You will get a 12V reading (or the test light illuminates) on both sides.
   • Blown Fuse: You will get 12V on one side, and nothing on the other.
   • No Power on Either Side: The circuit isn't active (e.g., headlights switch is off), or there is an issue further up the line.

Always replace a blown fuse with one of the exact same amperage and color. Never put a 20A fuse in a 10A slot—this is a fast track to melting your wiring harness and causing a vehicle fire.

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Common Blown Fuses on This Vehicle

If you're diagnosing a 2020 Nissan Titan, check these fuses first for common complaints:

• 12V Accessory Sockets (Fuses 6 & 7 - Cabin): These are the most commonly blown fuses. Drivers frequently plug in faulty phone chargers or high-draw air compressors that exceed the 20A limit. Check the socket for a penny or debris before replacing the fuse!
• Trailer Lights / Trailer Brake (Fuses 54 & 55 - Under-hood): Towing a trailer with bad wiring or a corroded connector will instantly pop these fuses. If you lose your trailer lights, check the IPDM under the hood before assuming your truck's wiring is bad.
• Fuel Pump (Fuse 41 - Under-hood): If your Titan cranks strong but refuses to start, check the fuel pump fuse. A failing fuel pump can draw excess amperage as it struggles, popping the fuse.
• A/C Clutch (Fuse 49 - Under-hood): If your climate control blower is working but the air isn't cold, check the A/C compressor clutch fuse.

If you replace a fuse and it immediately blows again, you have a hard short to ground. Stop replacing fuses and trace the wiring for chafing, rodent damage, or a failed component.

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