Nissan AD is a legendary Japanese SUV that is still in use on the roads of the CIS due to its reliability. However, even with such “indestructible” machines, small but critical elements fail over time - for example, turn relay. If your AD The turn signals started blinking at an uneven frequency, the emergency lights stopped working, or the signal disappeared completely - the problem is most likely in this module.

In this article we will look at how to independently diagnose a relay malfunction, where it is located in Nissan AD, how to replace it and what analogues are suitable instead of the original. We also provide a connection diagram, typical repair mistakes and answers to frequently asked questions. The material will be useful for both beginners and experienced car owners who prefer to repair their car with their own hands.

Where is the turn signal relay located? Nissan AD?

In most modifications Nissan AD (including WD21 And Y60) the turn and hazard warning relay is located in fuse box under the dashboard from the driver's side. The exact location depends on the year of manufacture:

  • 📍 AD before 1993: the relay is installed in a separate plastic box next to the steering column, under a plastic cover. To get there, you need to unscrew the two panel mounting screws.
  • 📍 AD after 1993: The relay was moved to the main fuse box (next to the starter and cooling fan relays). It has a black or gray body with markings FLASHER or TURN SIGNAL.
  • 📍 AD with diesel engines: sometimes the relay is duplicated in an additional unit under the hood (next to the battery). This is rare, but it is worth checking if the relay is not found in the cabin.

To accurately identify the part, pay attention to its shape: turn relay in AD usually cylindrical (old models) or rectangular (later versions) with 3–5 contacts. Do not confuse this with the starter relay (which is larger) or the charging relay (which has a metal heat sink).

📊 What modification of Nissan AD do you have?
  • WD21 (gasoline)
  • Y60 (diesel)
  • Other modification
  • I don't know

Signs of a faulty turn relay

Turn signal relay Nissan AD rarely fails suddenly - usually the malfunction appears gradually. Here are the key symptoms that indicate problems:

  • ⚡ Uneven blinking of turn signals: the lamps blink too quickly, slowly or at different frequencies (for example, the right turn blinks faster than the left).
  • 🔕 No sound signal: When turning on the turn, you can’t hear the characteristic “ticking” of the relay (even if the lamps are on).
  • 💡 Constantly burning lamps: The turn signals do not blink, but are on continuously (indicating that the relay contacts are stuck).
  • 🚨 Emergency lights not working: When you press the hazard warning button, the lamps do not light up or blink randomly.
  • 🔋 Spontaneous activation: The turn signals start flashing without pressing the steering column switch (the relay “sticks” in the closed state).

Important: if, along with a malfunction of the turn signals, the brake lights or parking lights stop working, the problem may be in the fuse box or wiring - the turn relay has nothing to do with it.

⚠️ Attention: On Nissan AD With LED turn signal lamps installed, the relay may not work correctly due to low LED resistance. In this case, the relay needs to be replaced with contactless electronic (for example, from Hella or Bosch).

How to check the turn signal relay with a multimeter?

Before replacing the relay, you should make sure that it is the problem. To do this, you will need a multimeter (or a simple “control” with a light bulb). Diagnostic procedure:

  1. Remove the relay from the fuse box (after disconnecting the battery ground).
  2. Call contacts:
    • 🔧 Connect the multimeter probes to the terminals 85 And 86 (relay coil). Resistance must be within 50–120 Ohm.
    • 🔧 Connect the probes to 30 And 87 (power part). In the initial state, the resistance should be endless (open contacts).
  • Apply power: connect to 85 And 86 voltage 12 V (possible from battery). There should be a click and resistance between 30 And 87 should become 0 ohm (closed contacts).

    • If the relay does not click or the resistance does not change, it is faulty. Also check fuse (usually 10 A or 15 A, is responsible for the turn signal circuit). On AD It is located next to the relay in the fuse box.

    Ring the winding (contacts 85–86)

    Check the power section (pins 30–87)

    Apply 12 V to the winding and listen for a click

    Make sure the fuse is intact -->

    Turn signal relay connection diagram Nissan AD

    Below is a typical connection diagram for a turn signal relay for Nissan AD WD21 (petrol versions). On diesel Y60 The wiring may differ slightly, but the operating principle is the same.

    Relay contact Wire color Purpose Where does the wire go?
    30 Red Power (+12 V) From the fuse 10 A (turn signal circuit)
    85 Black/white Control (weight) On the steering column switch
    86 Green/yellow Signal from switch From the steering column switch (left/right turn)
    87 Blue/black Lamp output To the turn signal lamps (via the fuse block)
    87a (if any) Brown Warning lamp On the turn indicator on the dashboard

    If on your AD the relay has a different wire color, check the wiring diagram for the specific modification. For example, on Y60 with diesel TD42 contact 86 maybe orange and 87 - purple.

    How to find a diagram for your modification?

    Download the repair manual (Service Manual) for your Nissan AD by VIN code. On sites like NicoClub or Nissan Forums There is a section with electrical diagrams. Alternative - program Mitchell1 or AllData (paid, but demo versions are available).

    Replacing the turn signal relay with Nissan AD: step by step instructions

    Replace the turn signal relay with AD can be done in 10–15 minutes without special tools. You will need:

    • 🔧 Flat screwdriver (for removing the panel).
    • 🔧 New relay (original or analogue).
    • 🔧 Multimeter (optional, for checking).

    Step 1: Turn off the power

    Remove the “–” terminal from the battery to avoid short circuit. On diesel AD It is also recommended to turn off "+" (due to high inrush current).

    Step 2: Remove the panel trim

    Under the steering column, find the plastic trim (attached with 2-3 screws or latches). Carefully pry it up with a screwdriver and remove it. On some versions AD You will also have to unscrew the lower part of the dashboard.

    Step 3: Remove the relay

    In the fuse block, find the relay marked FLASHER. Gently pull it up (sometimes you need to press the latch on the side). If the relay is stuck, don’t pull it - spray it WD-40 and wait 5 minutes.

    Step 4: Install the new relay

    Insert the new part into the connector (make sure it is in the correct orientation - the contacts must match). If the relay does not engage, do not press - check if the legs are bent.

    Step 5: Check your work

    Connect the battery and test the turn signals in three modes:

    1. Left turn.
    2. Right turn.
    3. Emergency alarm.

    If the lamps flash at the same frequency and the relay clicks, the replacement was successful.

    💡

    If, after replacing the relay, the turn signals blink too quickly, check the incandescent lamps - perhaps one of them is burnt out or LED lamps without resistors are installed.

    Original and similar relays for Nissan AD

    Original turn signal relay for Nissan AD has an article number 25230-31U00 (for models before 1993) or 25230-31U10 (for later versions). The cost of the original is from 1,500 to 3,000 rubles, but it can be replaced with analogues:

    Manufacturer Article Type Price, rub. Notes
    Hella 4RA 003 507-011 Electronic 800–1 200 Suitable for LED lamps, silent
    Bosch 0 332 014 150 Electromechanical 600–900 Similar to the original, reliable
    Valeo 401001 Universal 500–700 May require wiring modifications
    JP Group 1194600900 Electromechanical 400–600 Budget option, short resource

    When choosing an analogue, pay attention to relay type:

    • 🔄 Electromechanical - classic, with clicks, suitable for incandescent lamps.
    • 💡 Electronic — silent, mandatory for LED lamps (has a frequency stabilizer).

    ⚠️ Attention: On Nissan AD with installed gas cylinder equipment (GBO), the turn relay may fail more often due to power surges. In this case, it is recommended to install relay with overvoltage protection (For example, Hella 4RA 003 507-031).

    Typical mistakes when replacing a turn signal relay

    Even something as simple as replacing a relay can lead to new problems if mistakes are made. That's what can't do:

    • ❌ Ignore fuse: if the relay is burned out, check the fuse (usually 10 A). Replacing it without diagnosing the cause of the short circuit will lead to repeated failure of the relay.
    • ❌ Install a relay from another model: for example, a relay from Nissan Patrol or Toyota The pinout may not fit, even if it looks similar.
    • ❌ Do not check contacts: oxidized or bent relay legs lead to poor contact and repeated malfunctions. Clean the connector with alcohol or WD-40.
    • ❌ Use LED lamps without resistors: if you installed LEDs, but did not replace the relay with an electronic one, it will burn out in 1-2 months.

    Another common problem is mixed up wires during reassembly. If, after replacing the relay, the turn signals work “in the opposite direction” (the left one blinks when the right one is turned on), check the connection of the contacts 85 And 86.

    💡

    Before replacing the relay, always check the serviceability of the turn signal lamps - a burnt-out lamp can simulate a relay malfunction!

    Frequently asked questions (FAQ)

    Is it possible to drive without a turn signal relay?

    Technically it's possible, but it's illegal and dangerous. Without a relay, the turn signals will not blink, but are constantly on (or do not work at all). This violates traffic rules (Article 12.5 of the Code of Administrative Offenses - a fine of 500 rubles) and increases the risk of an accident, since other drivers will not understand your maneuvers.

    Why does the new relay click but the lights don't blink?

    There are several reasons:

    1. The fuse has blown (check 10 A in the block).
    2. The contacts in the lamp connector have oxidized (clean or replace the sockets).
    3. Broken wire from the relay to the lamps (test the circuit with a multimeter).
    4. The steering column switch is faulty (check the contact 86 on the relay).

    Which relay is better - original or analogue?

    Original relay (25230-31U00) more reliable, but more expensive. Analogues (Hella, Bosch) are cheaper and often not inferior in quality. For LED lamps necessarily take an electronic relay (for example, Hella 4RA 003 507-011).

    How to test a relay without a multimeter?

    You can use a “control” (12 V light bulb with wires):

    1. Connect one control wire to 85, second to 86 - the light should be on.
    2. Connect 30 to the “+” of the battery, and 87 - to control. When power is applied to 85–86 The light should come on/off with clicks.

    Where to buy a relay for Nissan AD?

    Original and similar relays can be found:

    • 🛒 In spare parts stores (Exist, AutoDoc, Ekat).
    • 🌍 In the markets: Avito, Drom, AliExpress (for analogues).
    • 🏗️ In disassembly - original relays from used cars (cheaper, but risk of defects).

    Before purchasing, check the article number and compatibility with your modification AD.