Fuse box <em>Nissan AD</em> (11 body): complete guide with photos and diagrams

Owners Nissan AD in body 11 (manufactured 1995–2001) often encounter electrical problems that are associated with the fuse box. This unit is responsible for protecting circuits from short circuits and overloads, but over time the contacts oxidize, fuses fail, and relays begin to “fail.” If your headlights don't work, your heater fails, or your windows stop opening, the fuse box may be the culprit.

In this article you will find exact layout of fuses and relays for Nissan AD 11 body, learn how to correctly diagnose faults and replace elements without the risk of damaging the electrical wiring. We will also analyze typical mistakes that car owners make when working with the unit, and give recommendations for prevention. All data is confirmed by the manufacturer’s manuals and the experience of service technicians.

Where is the fuse box located in Nissan AD (11 body)?

B Nissan AD 11th body provided two main fuse boxes:

• 🔧 Main unit — located in the cabin, under the instrument panel on the driver’s side. To access it, you need to open the cover (it is secured with latches) and fold it down.
• ⚡ Additional relay block — located in the engine compartment, next to the battery (on some modifications, under a plastic cover near the windshield).

The photo below shows the main unit in the cabin. Please note: there is a diagram with fuse numbers on the cover, but over time the inscriptions are erased, so it is better to use our decoding.

Important: on some versions Nissan AD (for example, with a diesel engine CD20) block location may vary slightly. If you don't find it under the dashboard, check the space under the glove compartment - an additional module with fuses for the audio system and climate control was sometimes installed there.

Fuse diagram and decoding: what is responsible for what

The table below shows full decoding of the fuses of the main unit for Nissan AD 11 bodies (petrol and diesel versions). The numbers correspond to the markings on the block cover.

Fuse no.	Denomination (A)	What is he responsible for?
1	10	Side lights (left side), license plate light
5	15	Low beam headlights (right headlight), reverse lamp
10	20	Electric windows, heated rear window
15	7.5	Audio system, cigarette lighter, clock
20	10	Fog lights (front and rear)

⚠️ Attention: fuse No. 15 (7.5A) most often fails due to the use of powerful chargers in the cigarette lighter. If it burns out again, check the circuit for a short circuit or replace the cigarette lighter with an original one (part number 25460-4M000).

You can download the complete diagram with numbers 1–30 at link at the end of the article. Please note: on diesel versions the fuse No. 25 (10A) is responsible for the glow plugs - if the car does not start well when cold, check it first.

Typical fuse box faults and their causes

Fuse box in Nissan AD It rarely fails completely, but individual elements can cause problems. Here are the most common symptoms and their causes:

• 💡 Fuses blow for no apparent reason - usually associated with oxidation of contacts in the block or a short circuit in the circuit. For example, if the fuse is constantly on No. 10 (20A), check the power window wiring for chafing.
• 🔌 The relay clicks, but the equipment does not work - a sign of burnt contacts inside the relay (often found in cooling fan relays).
• 🔥 The plastic block melts — a critical malfunction requiring immediate diagnosis. Reason: prolonged overload of the circuit or installation of a fuse with an overrated rating.

Pay special attention oxidation of contacts - This is the most common problem in cars over 15 years old. The photo below shows a corroded block: such contacts need to be cleaned with a special liquid (for example, CRC 2-26) or fine sandpaper.

How to check a block for oxidation?

Use a multimeter in continuity mode: connect the probes to the fuse terminals. If the resistance tends to infinity, the contact is broken. Also inspect the block for green deposits (copper oxidation) or white deposits (aluminum oxidation).

If fuses blow immediately after replacement, do not install elements with a large value - this may lead to a fire in the wiring. Instead, check the circuit for short circuits using a multimeter or contact an auto electrician.

Step-by-step instructions: how to replace a fuse or relay

Replacing the fuse in Nissan AD does not require special skills, but it is important to follow the sequence of actions so as not to damage the block. Here are the detailed instructions:

1. Turn off the power. Remove the key from the ignition and remove the negative terminal from the battery (this will prevent a short circuit).
2. Remove the unit cover. Press the latches on the sides and gently fold it down. Don't force it - the plastic is fragile!
3. Find the faulty element. Use the circuit from our table or a multimeter in dialing mode.
4. Remove the fuse. Grasp it with tweezers (usually there is one in the block) and pull up. Do not use metal tools - they may short-circuit the contacts.
5. Install a new fuse. It must match the nominal value (see table above). Insert it until it clicks.

⚠️ Attention: If after replacement the fuse blows again, do not repeat the procedure - This is a sign of a serious malfunction in the circuit. For example, for a fuse No. 5 (15A)responsible for low beam, the typical cause is a short circuit in the lamp socket or damage to the wiring under the headlight.

To replace the relay, the procedure is similar, but more effort will be required to remove it - they are secured with latches. If the relay is stuck, do not try to pull it out by force: spray it on the contacts WD-40 and wait 5-10 minutes.

How to check the relay in the fuse box

Relay in Nissan AD are responsible for the operation of powerful consumers: starter, cooling fan, fuel pump, etc. If the equipment does not turn on, but the fuse is intact, the problem may be in the relay. Here's how to check it:

1. Remove the relay from the block. Pay attention to the markings (for example, R1 - starter relay, R3 - fan relay).
2. Ring the winding. Connect the multimeter to the terminals 85 And 86 (see diagram on the relay body). Resistance must be within 50–120 Ohm.
3. Check your contacts. Serve 12V to conclusions 85 And 86 - there should be a click and the contacts 30 And 87 close (check with a multimeter).

If the relay does not click or the contacts do not close, it needs to be replaced. For Nissan AD original relays fit Nissan (article 25230-4M000) or analogues from Bosch (series 0 332 019 150).

The most problematic relays in Nissan AD:

• 🚗 Starter relay (R1) - when it fails, the car does not start, but clicks are heard under the hood.
• 💨 Fan relay (R3) - if it does not work, the engine overheats (especially true for versions with GA16DE).
• ⛽ Fuel pump relay (R5) — if a breakdown occurs, the engine stalls a few seconds after starting.

Upgrading the fuse box: is it worth replacing with a new one?

Over time, the plastic of the fuse box Nissan AD becomes brittle and contacts oxidize. Many owners wonder: is it worth replacing the entire unit or is cleaning enough? The answer depends on the condition:

• ✅ The block is in good condition — just clean the contacts, replace blown fuses and lubricate the relay with dielectric grease.
• ❌ The block is melted or cracked - replacement required. Original block (25460-4M001) costs about 3–5 thousand rubles, but you can find a used one in good condition.

If you decide to replace the unit, please note:

1. The new block should be complete analogue by the number and location of fuses.
2. During installation, check all connectors for corrosion - it must be removed.
3. After replacement, test all electrical circuits (headlights, power windows, heater).

Some owners install additional fuse blocks for powerful equipment (for example, for a winch or additional lights). In this case it is important:

• 🔌 Connect the new unit via a separate relay.
• 📏 Use wires with a cross section of at least 2.5 mm².
• 🔥 Install the fuse on 20–30% higher than the design current (for example, for 100W headlights it is enough 10A).

Common mistakes when working with the fuse box

Even experienced car owners make mistakes that can lead to serious damage. That's what can't do when working with the fuse box Nissan AD:

• 🔧 Use bugs (homemade wire jumpers) instead of fuses. This may cause a fire!
• 💦 Clean contacts with a damp cloth - Water accelerates corrosion. Use only dry methods (brush, compressed air) or special sprays.
• ⚡ Check circuits for spark, closing the contacts with a screwdriver. This leads to voltage surges and failure of electronic components.

Another common mistake is ignoring oxidation. Many people simply replace fuses without cleaning the contacts of the unit. As a result, the new fuse quickly burns out due to poor contact. To avoid this, use contact lubricant (For example, Liqui Moly Kupfer-Spray) after cleaning.

What should I do if the fuse blows immediately after replacement?

This means there is a short circuit in the circuit. Disconnect all consumers connected to this fuse and check them one by one with a multimeter. Most often, the problem is damaged wire insulation or faulty equipment (for example, a window lift motor).

If you are not confident in your skills, it is better to contact an auto electrician. Diagnosis of the fuse box in the service will cost 1–2 thousand rubles, but it’s cheaper than repairing burnt wiring.

FAQ: Answers to frequently asked questions about the fuse box Nissan AD

Which fuse is for the cigarette lighter?

For the cigarette lighter in Nissan AD 11 body meets fuse No. 15 (7.5A). If it burns out, also check the circuit for a short circuit - often the problem is a damaged cigarette lighter socket.

Why don't the power windows work?

If the power windows stop working, check:

• fuse No. 10 (20A) — he is responsible for their nutrition.
• Relay R7 (if installed) - it controls electric motors.
• Wiring in the doors - the wires in the corrugation between the body and the door often fray.

Can fuses of a different rating be used?

No! Installing a fuse with overvalued (for example, 20A instead of 10A) can lead to melted wiring or even a fire. If a fuse constantly blows, look for the cause - usually a short circuit or a faulty consumer.

Where can I find a fuse box diagram for the diesel version?

Scheme for diesel Nissan AD (engine CD20) is slightly different. For example, fuse No. 25 (10A) responsible for glow plugs. The full diagram can be downloaded here (Section “Documentation”).

How to check the fuse box without a multimeter?

If you don't have a multimeter, you can:

• Visually inspect the fuses for burnt threads.
• Replace the suspicious fuse with a known good one (with the same rating).
• Listen to the relay - it should click when turned on.

However, for accurate diagnostics it is better to use a multimeter or contact a service center.