Nissan Almera G15 — a popular sedan, known for its reliability and unpretentiousness. However, even in such a machine, electrical problems may arise over time, and most often they are associated with relay - small but critical elements responsible for controlling high current circuits. If your headlights, cooling fan, or starter are not working, the relay may be the culprit.

In this article we will analyze in detail which relays are installed in Almera G15where they are located, how to check and replace them. You'll also find fuse box diagrams, common troubleshooting symptoms, and answers to frequently asked questions. Information is valid for models 2013–2019 with gasoline engines HR15DE And HR16DE.

Where are the relays located? Nissan Almera G15?

B Almera G15 the relays are distributed over two main blocks:

  • 🔧 Main fuse and relay box — located in the cabin, to the left of the steering column. Access to it opens after removing the cover (press the latch at the bottom).
  • 🚗 Additional block under the hood — located next to the battery, in a plastic box with a lid. Relays responsible for powerful consumers (starter, cooling fan, etc.) are located here.

Also, individual relays can be installed directly in the circuits of some components (for example, the fuel pump relay is often mounted under the rear seat). The exact location depends on the year of manufacture and vehicle equipment.

📊 Where do your relays most often fail?
  • In the salon block
  • In the engine compartment
  • In the circuits of individual components (fuel pump, headlights)
  • Haven't encountered any problems

To avoid confusion, remember a simple rule: low current relay (lighting, climate control) usually in the cabin, and high current relay (starter, fan) - under the hood.

Relay purpose in Nissan Almera G15: decoding according to schemes

Each relay in a car performs a specific function. Below is a table with a breakdown of the main relays for Almera G15 (valid for most configurations):

Relay number Purpose Location Symptoms of a problem
K1 Starter relay Engine compartment block The starter does not turn or clicks, but does not start the engine
K2 Cooling fan relay Engine compartment block Engine overheating, fan does not turn on
K3 Fuel pump relay Under the rear seat or in the cabin unit Engine does not start, no fuel pressure
K9 Low beam relay Salon block Both low beam headlights do not work
K15 Heated rear window relay Salon block The rear window does not heat, the circuit is broken

A complete relay diagram for your configuration can be found in instruction manual (section Fuses and Relays) or on the fuse box cover (there is often a marking there). If you do not have a manual, you can download it from the official website Nissan or on owner forums.

How to find a relay diagram for your Almera G15?

1. Open the fuse box cover - there is often a diagram on the inside.

2. Check the glove compartment - there may be paper instructions with markings there.

3. Download the electronic manual using the VIN code on the Nissan website (section “Technical Documentation”).

4. Visit thematic forums (for example, Drive2 or Almera-Club), where users post photos of schemes.

Signs of a faulty relay: how to diagnose the problem?

Relay in Almera G15 rarely fail suddenly - they are usually preceded by indirect signs. Here are the most common symptoms:

  • ⚡ Clicks without operation — for example, when you turn the ignition key, a click is heard, but the starter does not turn. This indicates burnt contacts inside the relay.
  • 🔥 Relay overheating - if the relay body is hot to the touch, this is a sign of increased resistance (often due to oxidation of the contacts).
  • 💡 Unstable operation of the node - for example, the cooling fan turns on every once in a while or the headlights blink for no reason.
  • 🚨 Complete refusal - if the relay is completely out of order, the corresponding component (for example, a fuel pump or heated glass) will stop working.

Before changing the relay, make sure that the problem is not fuse (they often burn out along with the relay) or wiring. For example, if the headlights do not work, first check the bulbs and fuse F9 (10A), and only then the relay K9.

💡

If the relay “clicks” but does not work, try turning on/off the corresponding component (for example, headlights or heated glass) several times. Sometimes this helps to “break through” oxidized contacts and temporarily restore operation.

How to check the relay in Nissan Almera G15?

Checking the relay does not require special tools - a multimeter or even a simple 12V light bulb is enough. Diagnostic algorithm:

  1. Remove the relay from the socket (carefully pry it off with a screwdriver or your fingers).
  2. Inspect the body for cracks, melting or signs of overheating.
  3. Ring the winding:
    • 🔌 Connect the multimeter in resistance mode to the contacts 85 And 86 (usually these are control pins).
    • 📉 Normal resistance - 50–120 Ohm. If it shows a break or zero, the relay is faulty.
  4. Check your contacts:
    • 🔋 Serve 12V to contacts 85 And 86 (possible from battery).
    • 🔊 There should be a click - this means that the winding is working properly.
    • 📊 Check the resistance between 30 And 87 - in the off state it should be ∞ (open), when on - 0 ohm (closed).

If the relay does not click when voltage is applied or the contacts do not close, it must be replaced. For a temporary solution you can try clean contacts fine sandpaper or WD-40, but this does not guarantee long-term performance.

Inspect the housing for damage|Ring the winding (contacts 85–86)|Apply 12V to the control contacts|Check the closure of the power contacts (30–87)|Compare with the working relay (if there is a spare one)-->

Relay replacement: step-by-step instructions

Replace the relay in Nissan Almera G15 you can do it yourself in 5–10 minutes. You will need:

  • 🔧 Flat screwdriver (for removing the block cover).
  • 🔍 Flashlight (to better see the markings).
  • 🔋 New relay (preferably original or analogue with the same parameters).

Step-by-step algorithm:

  1. Disconnect the negative battery terminal (especially if you are working with a relay under the hood).
  2. Remove the unit cover:
    • Inside: press the latch at the bottom of the lid and pull it towards you.
    • Under the hood: press the latches on the sides and lift the lid up.
  • Find the faulty relay according to the diagram (see table above) or markings on the lid.
  • Remove the relay - Gently grab it by the body and pull it up. If it's tight, you can pry it off with a screwdriver.
  • Install a new relay - it should stand up with a slight click. Make sure the contacts are not bent.
  • Check the operation of the node - turn on the ignition and activate the appropriate function (for example, headlights or heated glass).
    • 💡

    When replacing the starter relay or fuel pump be sure to check the condition of the contacts in the block sockets - they often oxidize or burn, which leads to repeated breakdowns.

    If after replacing the relay the unit still does not work, check:

    • 🔌 fuse - it could burn out due to a short circuit.
    • 📡 Wiring — the cable from the relay to the node may be damaged.
    • 🔧 The node itself - for example, if the cooling fan does not work, the problem may be in its motor.

    Which relays fail most often?

    According to owner statistics Nissan Almera G15, the following relays most often break:

    1. Starter relay (K1) — due to high currents, the contacts burn out, especially when the engine is frequently started in cold weather.
    2. Cooling fan relay (K2) - fails due to overheating (especially in summer) or contact corrosion.
    3. Fuel pump relay (K3) - often suffers from power surges or poor fuel (leads to increased load on the pump).
    4. Low beam relay (K9) — the contacts oxidize due to moisture entering the fuse box.

    To extend the life of the relay, follow these simple recommendations:

    • 🔋 Check regularly battery voltage - low charge or voltage surges shorten the life of the relay.
    • 💧 Avoid getting moisture into the fuse box (for example, when washing under the hood).
    • 🔧 Periodically clean the relay contacts from oxidation (you can use WD-40 or special lubricant for electrical contacts).
    💡

    If you often drive off-road or in high humidity conditions, treat the relay contacts dielectric grease - this will prevent corrosion and extend service life.

    Where to buy a relay for Nissan Almera G15?

    Relay for Almera G15 can be purchased in several places:

    Place of purchase Pros Cons Average price (RUB)
    Official dealer Nissan Guarantee of original spare parts Expensive, long wait 800–1500
    Online stores (Exist, Avtodoc, Kufar) Large selection, fast delivery Risk of running into a fake 300–1000
    Car markets or showdowns Cheap, you can bargain No warranty, risk of buying a used one with a defect 150–500
    Electronics stores (eg Chip and Dip) You can choose a universal relay You need to know the parameters (current, voltage) 200–600

    When purchasing, pay attention to:

    • 🔍 Marking - the relay must match the number (for example, 25230-JD00A for starter relay).
    • 📏 Dimensions and contacts - even if the relay looks the same, the location of the legs may differ.
    • 🔋 Rated current - for example, a fan relay requires a current of at least 30A.

    If you buy a non-original relay, give preference to proven brands: Hella, Bosch, Valeo or Meat & Doria. They are often not inferior in quality to the original, but are cheaper.

    FAQ: Frequently asked questions about relays in Nissan Almera G15

    Is it possible to replace the relay with a similar one from another Nissan model?

    Yes, but only if they match catalog number, contact diagram And rated current. For example, the starter relay from Nissan Note or Juke with the same engine HR15DE often come up. However, it is better to check the spare parts catalog by VIN code.

    Why does the starter relay click but the starter does not turn?

    This is a typical sign burnt contacts inside the relay or starter malfunction. First replace the relay with a known working one. If the problem persists, check:

    • 🔋 Battery charge (must be at least 12.5V).
    • 🔌 Condition of the starter terminals (often oxidize).
    • 🔧 The starter itself - perhaps the brushes or bearings are worn out.
    How to test a relay without a multimeter?

    Can be used 12V test lamp or known working relay for replacement. Algorithm:

    1. Remove the relay and insert a working one instead (for example, from the same node, if it is duplicated).
    2. If the node works, your relay is faulty.
    3. If not, the problem is in the wiring or the unit itself.

    You can also submit 12V from battery to contacts 85 And 86 - If the relay is working properly, you will hear a click.

    What to do if the cooling fan relay fails while on the road?

    If the fan does not work and the engine begins to overheat:

    1. 🚗 Stop and turn off the engine.
    2. 🔧 Check the fuse F10 (10A) - it often burns out along with the relay.
    3. 🔄 If the fuse is intact and the relay is faulty, you can temporarily close the contacts 30 And 87 in the relay socket (for example, with a piece of wire) - the fan will turn on directly. But you can’t go that far - only to the nearest service station!
    ⚠️ Attention: Driving for a long time with the fan not working will lead to engine overheating and serious damage (rotating liners, deformation of the cylinder head).
    Why does the fuel pump relay often fail?

    Main reasons:

    • ⚡ Power surges - for example, when “lighting” from another car.
    • 🛢️ Bad fuel — the fuel pump works with increased load, which leads to overheating of the relay.
    • 💧 Moisture in the fuse box - oxidation of contacts.
    • 🔋 Fuel pump wear - if the pump jams, the relay experiences increased load.

    To extend the life of the relay, use quality fuel and periodically clean the fuse box contacts.