Fan fuse <em>Nissan Qashqai</em>: location, faults and replacement

Engine cooling fan Nissan Qashqai - a critical element of the thermoregulation system. Its failure can lead to engine overheating, deformation of the cylinder head, and even jamming of the piston group. In 80% of cases the problem lies not in the fan itself, but in blown fuse or relay. However, not all owners manage to find this fuse the first time - its location depends on the year of manufacture and modification Kashkaya (J10 or J11).

In this article we will look at Exact fan fuse location diagrams for all generations, we will learn how to diagnose a malfunction without a scanner, and also show how to correctly replace an element without risking burning the electrical wiring. We will pay special attention A common problem with the relay starting circuit, due to which even a new fuse will burn out after 5-10 minutes of operation.

Where is the fan fuse located? Nissan Qashqai J10 (2007–2013) and J11 (2014–2021)

In the first generation (Qashqai J10) the fan fuse is located in main fuse box, which is located to the left of the steering column, under the plastic cover. You need to look for an element with markings F37 (30A) — it is responsible for the cooling fan power circuit. Important: on diesel versions with a motor K9K fuse can be used F39 (40A) - this is due to increased load on the cooling system.

In the second generation (Qashqai J11) the scheme has changed. The fuse has now been moved to additional unit under the hood, next to the battery. Its designation is F10 (30A) for gasoline engines (MR20DD, H5FT) and F12 (40A) for diesel engines (R9M). On hybrid versions (for example, Qashqai 1.6 DIG-T) there may be a separate relay controlled by the ECU - in this case the fuse is duplicated in the passenger compartment under the number F45 (20A).

• 🔧 J10 (2007–2013): interior block, fuse F37 (30A) or F39 (40A) for diesel.
• 🔧 J11 (2014–2021): engine compartment, fuse F10 (30A) or F12 (40A).
• ⚡ Hybrids/turbo: additional fuse F45 (20A) in the salon.

How to check a fan fuse without a multimeter

If the fan stops working, do not rush to replace it. Check the fuse first - this will take 2 minutes. Visual inspection often misleading: contacts may look intact, but be burnt out inside. Use one of three methods:

1. Replace with a known good one. Take a fuse with the same rating (for example, 30A) from another circuit (for example, a cigarette lighter) and install it in place of the suspect. If the fan starts working, the problem has been found.
2. Chain continuity. Turn on the ignition, but do not start the engine. Remove the fuse and check the voltage at its contacts in the socket using a test lamp or a test screwdriver. On one contact there should be +12V, on the other - 0V.
3. Spark test. Carefully close the fuse contacts in the socket with a screwdriver (for 1–2 seconds!). If the fuse is good and the problem is in the relay or wiring, the fan should turn on briefly.

⚠️ Attention: Never use fuses with a different rating (for example, 20A instead of 30A). This can lead to melting of the unit contacts or fire of the wiring. On Qashqai with turbo engines (MR16DDT) it is especially important to observe the rating - there the fan circuit is connected to the supercharging system.

Step-by-step instructions for replacing the fuse

Replacing the fuse with Nissan Qashqai does not require special tools, but there are nuances that even experienced car owners miss. Follow the algorithm:

1. Turn off the ignition and remove the negative terminal from the battery (required!). On Qashqai J11 with the system Start/Stop wait until the on-board network turns off completely (about 10 minutes).
2. Find the fuse box (see diagrams above). On J10 pull the tab on the unit cover in the passenger compartment, to J11 Unclip the engine compartment block clamps.
3. Remove the fuse special tongs (they are usually attached to the inside of the block cover). If you don't have pliers, use tweezers or a thin screwdriver to pry the fuse off from the side.
4. Install a new fuse the same denomination. On Qashqai with diesel engines (K9K, R9M) it is recommended to use fuses with gold plated contacts - they resist oxidation better.
5. Check fan operation. Connect the battery terminal, start the engine and wait for the fan to operate (or force it on via the diagnostic connector).

Start the engine and wait until it warms up to 90°C|Make sure the fan turns on at both speeds|Check the voltage at the fan relay contacts|Inspect the coolant temperature sensor connector

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If the fuse blows again after replacement, the problem lies deeper. Most often the culprits are:

• 🔥 Short circuit in the wiring (check the harness next to the radiator - the insulation often frays there).
• 💦 Relay stuck fan (on J10 The relay is located next to the fuse, on J11 - in a separate block under the hood).
• 🌡️ Faulty temperature sensor (sends a false signal to the ECU, causing the fan to work constantly).

Fan fuse and relay diagram for Nissan Qashqai

To avoid guessing from the coffee grounds, use the official diagrams from Nissan. Below is the current list for both generations:

On models with climate control (For example, Qashqai Tekna) there may be an additional relay in the fan circuit R25, which is responsible for working at second speed. If the fan only turns on at low speeds, check this relay - it often sticks due to moisture.

Common mistakes when replacing a fan fuse

Even experienced car owners make mistakes that lead to repeated fuse blowing or failure of other elements. Here are the most common:

1. Using "bugs". Replacing a fuse with a wire or foil is a surefire way to burn the wiring. On Qashqai this often leads to melting of the engine ECU connector (repair cost - from 20,000 ₽).
2. Ignoring relays. If the fuse blows again, 90% of the fault is the fan relay. On J10 it is located next to the fuse, on J11 - in a separate block under the hood (marking R12).
3. Untested wiring. Before installing a new fuse, be sure to check the wiring harness near the radiator. On Qashqai it often rubs against the bumper mounting bracket.
4. Poor polarity. When installing a fuse upside down, the diode in the relay circuit may burn out. This results in the fan running at only one speed.

⚠️ Attention: On Nissan Qashqai J11 with the system ProPilot Replacing the fan fuse without disconnecting the battery may reset cameras and radar settings. In this case, recalibration will be required (service cost - from 5,000 ₽).

Troubleshooting: why the fan fuse blows

If a fuse blows systematically, you need to look for the cause, not the effect. Here are the main culprits:

• 🔌 Short circuit in the harness. Most often, the insulation is frayed near the radiator or at the point of passage through the engine shield. On Qashqai J10 The problem usually lies in the temperature sensor connector.
• 🔄 Stuck relay. The relay contacts oxidize over time, and it begins to “stick.” This leads to increased current in the circuit and blown fuse. Fan relay on Qashqai It is cheap (about 300 ₽), but replacing it requires care.
• 🌡️ Faulty temperature sensor. If the sensor “lies”, the ECU may constantly turn on the fan at maximum speed, which leads to an overload of the circuit. Check the sensor resistance at different temperatures (standard: 2.5 kOhm at 20°C, 0.3 kOhm at 90°C).
• 💨 Dirty radiator. If the radiator is clogged with dirt or insects, the fan operates at its maximum capacity, which increases the load on the circuit. Clean the radiator with compressed air (not a high pressure washer!).

On Nissan Qashqai J11 with motor MR20DD There is another common problem: fan connector melting. Due to poor contact, resistance increases, which leads to overheating and blown fuse. Check the connector for darkening or melted contacts. If they turn black, replace the entire connector (part number: 28521-JM00A).

What fuses and relays to buy for Nissan Qashqai

Not all fuses are created equal. For Qashqai It is recommended to use elements from trusted manufacturers:

• 🔹 Fuses: Littlefuse (series ATM), Bussmann (series ATP), or original Nissan (item: 24060-3M000 for 30A). Avoid cheap Chinese fuses - they are often underrated.
• 🔹 Relay: Original Nissan (item: 25230-3M000 for J10, 25230-JM00A for J11) or analogues from Hella (series 4RA 003 567-121).
• 🔹 Fuse box: If the contacts in the block are melted, replace the entire block. For J10 fits the block 28500-4M000, for J11 — 28500-JM00A.

On Qashqai with turbo engines (MR16DDT, H5FT) the fan fuse must be with increased heat resistance (labeling HT on the body). Conventional fuses serve 2–3 times less in such conditions.

FAQ: Frequently asked questions about the fan fuse Nissan Qashqai

Разъём датчика температуры (J10):
1 — сигнал
2 — масса
3 — +12V (после замыкания с 1 вентилятор включится)