Nissan Laurel - a legendary sedan, produced from 1968 to 2002, but especially popular in body styles C33 (1993–1997), C34 (1997–2000) And C35 (2000–2002). Like any car of considerable age, it requires special attention to electrics. Fuses are a weak point here: over time they oxidize, burn out or lose contact, which leads to inoperative headlights, heater fan or even engine failure. In this article, we will look at where the fuse boxes are located, how to check and change them, as well as typical problems that owners encounter.

Feature Laurel — availability two main fuse blocks (in the cabin and under the hood) plus additional relays depending on the configuration. For example, in versions with RB25DE or VQ30DE the scheme may differ from the basic modifications. We have collected current data for all generations, including rare export variants, and added tips on how to avoid common diagnostic mistakes.

Where are the fuses located in Nissan Laurel?

B Nissan Laurel fuses are located in three zones:

  • 🚗 Main unit in the cabin — to the left of the steering column, under the panel (accessible after removing the cover).
  • 🔧 Block under the hood - next to the battery (in C34/C35 it is often covered with a plastic cover with the inscription FUSE).
  • ⚡ Additional relays — in the glove compartment (on some modifications) or behind the center console.

B Laurel C33 The interior unit is often hidden behind a plastic cover that needs to be pryed off with a screwdriver. B C34/C35 Access is easier - just press the latch. The engine compartment unit in these models is moved closer to the windshield, which simplifies inspection in the rain (no need to remove the battery).

Important: on some export versions (for example, for the Middle East), blocks may have different fuse order. If your diagram does not match the one below, check the markings on the block cover - the numbers and purpose are usually indicated there.

📊 What body type is your Nissan Laurel?
  • C33 (1993–1997)
  • C34 (1997–2000)
  • C35 (2000–2002)
  • Other body

Nissan Laurel fuse diagram by generation

Below is a universal diagram for most modifications. Please note: fuse numbers may vary depending on year of manufacture and equipment. For example, in Laurel C35 with VQ35DE added fuses for the system VDC (stability control), which are not available in the basic versions.

Fuse no. Denomination (A) Purpose (C33/C34) Purpose (C35)
1 10 Interior lighting, instrument lighting Interior lighting, clock
5 15 Low beam (right headlight) Low beam (both headlights)
10 20 Heater fan Heater fan, air conditioner
15 10 Audio system, cigarette lighter Audio system, NAVI (if installed)
20 30 Window lifters Windows, sunroof

B Laurel C35 with engine VQ35DE fuse No. 25 (15A) is responsible for the system VDC - if it burns out, the indicator on the device will light up SLIP. Earlier models (C33/C34) do not have this fuse.

For accurate identification we recommend:

  1. Take a photo of the fuse box cover (there is often a diagram there).
  2. Check numbers with FAQ at the end of the article, which shows differences by year.
  3. Use a multimeter to test the circuits (more on this in the next section).
Where can I download the complete fuse diagram?

Official manuals for Nissan Laurel can be found on the website NicoClub (section Service Manuals). The resource is also useful for C35 LaurelClub, where scans from the factory are posted.

How to check fuses: step-by-step instructions

Checking the fuses in Laurel does not require special skills, but there are nuances. For example, in old blocks (C33) the contacts often oxidize, and visually the fuse may appear intact, although the circuit is broken. Here's how to avoid mistakes:

Turn off the ignition and remove the terminal from the battery|Locate the fuse box (see section above)|Have a multimeter or test light ready|Have spare fuses on hand (10A, 15A, 20A)-->

Step 1. Visual inspection

Remove the fuse with tweezers (usually it is built into the block cover) and look at the light. A blown fuse has broken thread inside. However, in 30% of cases the break is not visible to the naked eye - especially if the fuse is old and covered with dust.

Step 2. Check with a multimeter

Set the multimeter to continuity test mode (diode or resistance icon). Touch the fuse contacts with the probes:

  • 🔊 Beep or resistance 0 ohm - the fuse is OK.
  • 🚫 No signal or OL (break) - the fuse has blown.

Step 3. Check the voltage (for experienced ones)

Turn on the ignition and check the voltage at both fuse contacts in the block:

  • ⚡ On one contact 12V, on the other 0V - the fuse has blown.
  • ⚡ On both contacts 12V — a problem in the circuit after the fuse (for example, a short circuit).

⚠️ Attention: Never test fuses for sparks by closing the contacts with a screwdriver or wire. B Laurel this may cause combustion engine control unit (ECU) or ignition relay.
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If the fuse blows again after replacement, do not install a “bug” (a wire instead of a fuse). In 90% of cases this leads to a fire in the wiring. Instead, look for a short in a circuit (usually in the harnesses under the hood or in the doors).

Typical faults and their causes

Owners Nissan Laurel The most common problems encountered with fuses are:

  • 💡 Low beam fuse blows (No. 5 or No. 6) - usually due to oxidation of the contacts in the headlight or a short circuit in the harness going to the lamp. B C34/C35 The problem may be in the light relay (located next to the fuse box).
  • 🔥 The heater fan fuse is on (No. 10) - the heater motor is to blame (often jams due to moisture) or damaged wiring under the dashboard.
  • 🚪 Power windows do not work (fuse No. 20) — check the contacts in the doors (wires often fray there). IN C35 The relay in the unit under the hood could also be to blame.
  • 🔋 The cigarette lighter fuse blows (No. 15) - usually due to the use of powerful devices (for example, a compressor) or a short circuit in the socket.

Particular attention should be paid fuse No. 30 (30A) - he is responsible for ECU (electronic engine control unit). If it burns out, the car will not start. The cause is often corrosion in the connectors. ECU or a short in the harness near the battery.

B Laurel C35 with VQ35DE There is also a problem with the fuse IGN (ignition) - it may burn out due to a faulty immobilizer or alarm. If the car stalls after a few seconds after replacing the fuse, check immobilizer (reflashing the key often helps).

⚠️ Attention: If in Laurel C33 with engine RB20DE or RB25DE The cooling fan has stopped working, do not rush to change fuse No. 12. First check the fan relay (it often gets stuck due to overheating) and the temperature sensor.

How to replace a fuse: tips and mistakes

Replacing the fuse in Nissan Laurel It seems simple, but many owners make mistakes that lead to repeated breakdowns. Here's how to do it right:

1. Fuse selection

Only use fuses same denomination, as the original ones. For example:

  • 🔢 Replace 10A on 15A Do not do this - this may lead to a fire in the wiring.
  • 🔢 As a last resort, you can temporarily install a fuse with smaller denomination (for example, 15A instead of 20A), but only for diagnostic purposes.

2. Replacement procedure

  1. Turn off the ignition and remove the terminal from the battery (especially if you are working with the unit under the hood).
  2. Remove the burnt fuse using tweezers (not your fingers - the contacts may be damaged).
  3. Install the new fuse until it clicks.
  4. Check circuit operation before connecting the battery (for example, turn on the headlights).

3. Common mistakes

  • ❌ Using “bugs” (wire, foil) - this leads to a fire in the wiring.
  • ❌ Replacing a fuse without searching for the cause of the burnout (for example, a short circuit).
  • ❌ Installing the fuse upside down - in some units this can lead to poor contact.
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If the fuse blows immediately after replacement, the problem is not in it, but in the circuit. You need to look for a short circuit or a faulty consumer (for example, a stove motor or a lamp).

Electrical diagnostics: what to do if the fuses burn repeatedly

If the fuse is in Laurel burns out again and again, which means there is short circuit or increased load. Here's the action plan:

1. Checking the circuit for short circuit

Disconnect all consumers in the circuit (for example, if the cigarette lighter fuse is on, disconnect its connector). If the fuse no longer blows, the problem is in one of the devices. If it stays on, look for a short in the wiring.

2. Wiring continuity

Use the multimeter in resistance mode:

  • 🔍 Disconnect both ends of the wire from the circuit.
  • 🔍 Touch the ends of the wire with the probes. There must be resistance 0 ohm (if the wire is intact) or OL (if there is a break).
  • 🔍 If the resistance is close to 0 ohm When checking, there is a short circuit between the wire and ground.

3. Typical short circuits in Laurel

  • 🚗 Harnesses under the hood - often rub against the edge of the hood or radiator.
  • 🚪 Wiring in the doors — breaks when opening/closing.
  • 💡 Lamp sockets - oxidize and cause a short circuit.

B Laurel C34/C35 There is often a problem with the harness going to ECU. If fuse No. 30 (30A) blows for no apparent reason, check the connectors ECU for corrosion. Clean the contacts with alcohol and apply dielectric grease.

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To find a short in the wiring, use the "dividing test" method: divide the circuit in half and check each part separately. This will save time.

Recommendations for caring for Nissan Laurel electrics

To keep the fuses in Laurel last longer, follow these tips:

  • 🛠️ Clean the block contacts once a year - use WD-40 or a special contact cleaner. Oxidation increases resistance and causes fuses to overheat.
  • 🌧️ Check the tightness of the blocks - in C33 water often enters the interior unit through the door seals.
  • 🔌 Don't overload the circuits - for example, do not connect more powerful devices to the cigarette lighter 120W (otherwise fuse No. 15 will burn out).
  • 🔋 Keep an eye on your battery - low voltage (less than 11.5V) may cause false tripping of fuses.

For owners Laurel C35 with VQ35DE it is especially important to monitor massive wires. Over time, they oxidize, which leads to unstable operation of electronics. Check mass points:

  • 🔧 Under the battery (main mass).
  • 🔧 On the body near ECU.
  • 🔧 On the gearbox (if there are problems with the sensors).

If you often drive off-road, we recommend installing additional fuse box protected from moisture (e.g. Blue Sea Systems). This will protect the electrical system from corrosion and short circuits.

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B Nissan Laurel with a mileage of more than 200 thousand km, be sure to check the condition of the harnesses in the engine compartment. The insulation becomes brittle and the slightest movement can cause a short circuit.

FAQ: Frequently asked questions about Nissan Laurel fuses

🔍 Where can I find a fuse diagram for my Laurel modification?

The schemes differ depending on the body and engine. For C33/C34 with RB20DE/RB25DE download the manual at NicoClub. For C35 with VQ30DE/VQ35DE Check the fuse box cover - there is usually a current diagram there. If it is not there, write the model and year in the comments - we will help you find it.

⚡ Why does the low beam fuse blow out even though the lamps are new?

In 80% of cases the problem is oxidized cartridge contacts or a short circuit in the harness going to the headlight. Check:

  1. Condition of the cartridge (moisture often accumulates there).
  2. The integrity of the insulation of the wire from the headlight to the fuse box.
  3. Low beam relay (in C34/C35 it is separate, next to the block).

If the fuse burns immediately after replacement, unplug the headlight from the connector and check the circuit with a multimeter.

🚗 Is it possible to install a fuse of a higher rating if the original one quickly burns out?

No! This may lead to fire in the wiring. The fuse is rated for the maximum current that the circuit can withstand. If it burns out, then there is a problem (short circuit or faulty consumer). Instead of increasing the denomination, find and eliminate the cause.

🔧 How to check the relay in Nissan Laurel?

Relay in Laurel are checked like this:

  1. Remove the relay from the block.
  2. Ring the contacts with a multimeter 85 And 86 (coil) - the resistance should be 50–120 Ohm.
  3. Serve 12V to contacts 85 And 86 - there should be a click.
  4. Call contacts 30 And 87 - when off, resistance OL, included - 0 ohm.

If the relay does not click or does not pass current, replace it. B Laurel The fan, low beam and fuel pump relays often fail.

💡 Which fuses are most likely to blow in Laurel C35?

B C35 The most problematic fuses:

  • No. 5/6 (15A) - low beam (often due to oxidation of cartridges).
  • No. 10 (20A) - stove fan (motor or relay is to blame).
  • No. 15 (10A) - audio system/cigarette lighter (short circuit in the socket).
  • No. 25 (15A) - system VDC (only for VQ35DE).

If fuse No. 30 (30A) is lit, check ECU and a harness near the battery.