Nissan Terrano 1 (R20) fuses: location, diagram and replacement

Nissan Terrano 1 (internal designation R20) is a legendary compact SUV, released in 1986 and gaining popularity due to its reliability and easy repairs. However, even such machines eventually develop electrical problems, and the most common cause is blown fuses. If your headlights do not work, the stove fails, or the cigarette lighter does not turn on, the first thing you should check is fuse mounting block.

In this article you will find complete fuse and relay diagram for Nissan Terrano 1 with petrol (GA16DE, SR20DE) and diesel (CD20, CD20T) engines, including the location of the blocks, decoding of each element and step-by-step instructions for replacement. We will also analyze typical symptoms of malfunctions and give tips on how to avoid diagnostic errors.

Where are the fuses located in Nissan Terrano 1?

B Terrano 1 fuses and relays are distributed over two main blocks:

• 🔧 Main mounting block — located under the hood, next to the battery (driver's side). Protected by a plastic cover with an inscription FUSE & RELAY BOX.
• 🚗 Additional block — located in the cabin, under the instrument panel (to the left of the steering column). To gain access, you need to unscrew the two screws securing the plastic cover.

On some modifications (for example, with a diesel engine CD20T) there may be a third block - fuel pump relay, located under the rear seat. It is often confused with a fuse, but it is the relay installed there (marking FUEL PUMP RELAY).

Important: on export versions Terrano 1 (for example, for the Japanese or European market), the block diagram may differ slightly. If your car is imported, check the sticker on the back of the unit cover - the current decoding is indicated there.

Fuse diagram for Nissan Terrano 1 (main unit)

The main mounting block contains the majority of fuses and relays responsible for key vehicle systems. Below is a table with a breakdown for the most common version Terrano 1 (1986–1995).

Fuse no.	Denomination (A)	Purpose	Symptoms of a problem
F1	10	Interior lighting, instrument lighting, trunk lamp	The lamps do not light up, the panel backlight does not work
F2	10	Direction indicators, hazard warning lights	Turn signals do not flash, hazard lights do not work
F3	15	Windshield wipers, windshield washer	Wipers don't work, washer doesn't spray
F7	20	Heated rear window	The rear window does not heat, the heating filaments are broken
F10	15	Cigarette lighter, 12V socket	Cigarette lighter does not work, devices do not charge

A complete diagram for your modification can be found on the back of the block cover or in repair manual (section Electrical Wiring Diagram). If the sticker has worn off, be guided by the color of the wires: for example, the cigarette lighter fuse (F10) is usually connected to a red wire with a black stripe.

⚠️ Attention: On Terrano 1 with diesel engine CD20T fuse F8 (15A) is responsible for the operation of glow plugs. If the car has difficulty starting when cold, check it first - this is a common problem with diesel versions.

How to check a fuse with a multimeter?

If you suspect that a fuse has blown, you can check it without removing it from the block - a multimeter or even a test lamp is enough. Algorithm of actions:

1. Turn on the circuit that is not working (such as headlights or windshield wipers).
2. Set the multimeter to mode calls (diode icon) or resistance measurements (200 Ω).
3. Touch the fuse terminals with the probes:
   • 🔋 If on the screen 0 Ω or a beep sounds - the fuse is good.
   • 🚫 If resistance ∞ (infinity) - the fuse has blown.

For a visual check, remove the fuse with tweezers (usually included with the unit) and inspect the metal thread inside. A burnt thread will be torn or melted. Don't test fuses for sparks. - this can damage the car's electronics!

Typical fuse problems and their causes

B Nissan Terrano 1 Most often the fuses of the following circuits fail:

• 💡 F10 (cigarette lighter) — burns out due to the connection of powerful devices (compressors, inverters) or a short circuit in the outlet.
• 🔦 F5 (low beam) — the problem may be in oxidized lamp contacts or damaged wiring.
• 🚿 F3 (wipers) - often suffers due to freezing of the windshield wiper mechanism in winter.
• 🔥 F8 (glow plugs, diesel) — burns out when trying to start for a long time when cold or the relay malfunctions.

If the fuse burns again after replacement, don't increase its value - this may cause a fire! In such cases, it is necessary to look for the cause:

• Short circuit in the wiring (check the insulation of the wires).
• Consumer malfunction (for example, jammed wiper motor).
• Poor contact in connectors (oxidation or corrosion).

⚠️ Attention: On Terrano 1 with gasoline engine SR20DE fuse F15 (10A) responsible for the work ECU. If it burns out, the engine may not start or may run rough. Disconnect the battery before replacing!

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

If the new fuse blows instantly, this indicates a short circuit. Required:

1. Disconnect the battery.

2. Remove the fuse and check the circuit with a multimeter in resistance mode (between the positive wire and ground).

3. If the resistance is close to 0, there is a short circuit. It is necessary to sequentially disconnect consumers in this circuit to find the culprit.

4. Frequent culprits: damaged wires under the hood (rubbed against metal), faulty switches or motors (for example, a heater fan).

Step-by-step instructions for replacing the fuse

Replacing the fuse in Nissan Terrano 1 takes no more than 5 minutes. You will need:

• Tweezers (usually included with the block).
• New fuse same denomination.
• Flashlight (for ease of inspection).

Sequence of actions:

1. Turn the ignition off and disconnect the problematic circuit (for example, remove the key from the lock if changing the cigarette lighter fuse).
2. Remove the fuse box cover (press the latches on the sides).
3. Find the blown fuse (look at the diagram or signs of melting).
4. Use tweezers to remove the old fuse and insert the new one. strictly according to polarity (some fuses have marks + And –).
5. Close the unit cover and check the operation of the circuit.

If after replacement the fuse burns out again, do not repeat the procedure - this may indicate a serious malfunction. Contact an auto electrician for diagnosis.

Relay in Nissan Terrano 1: location and purpose

Together with fuses in the mounting block Terrano 1 Relays are installed that are responsible for controlling powerful consumers. Their malfunction can manifest itself in the same way as a blown fuse (for example, the headlights or cooling fan do not work). Below is a list of the main relays and their locations:

Designation	Purpose	Symptoms of a problem	How to check
R1	Starter relay	The starter does not turn or clicks	Ring the winding (resistance ~80 Ω)
R3	Cooling fan relay	The fan does not turn on, the engine overheats	Apply 12V to pins 85 and 86 - a click should be triggered
R5	High beam relay	High beam does not turn on	Replace with a known good one

Relay in Terrano 1 standardized - most of them are marked 12V 30/40A and are interchangeable with relays from other cars Nissan (For example, Patrol Y60 or Navara D22). When purchasing a new relay, pay attention to the contacts: they must match in location and number.

To test the relay you can use jumper (for example, a piece of wire with stripped ends). Connect it instead of a relay between the contacts 30 And 87 - if the circuit works, the relay is faulty. Do not use this method for the starter relay or fuel pump - this may cause damage!

Where to buy fuses and relays for Terrano 1?

Fuses and relays for Nissan Terrano 1 are not in short supply, but when purchasing it is important to consider several nuances:

• 🛒 Fuse rating must strictly correspond to the original. For example, if the diagram specifies 15A, do not install 20A - this may damage the wiring.
• 🔍 Fuse type: in Terrano 1 fuses are used blade type (knife). Older models may have cylindrical fuses - they need to be replaced only with similar ones.
• 🔄 Relay better to buy original ones (Nissan or Mitsubishi) or trusted manufacturers: Hella, Bosch, Valeo.

Where to look:

• 🏬 Auto stores: in the "Electrical" or "Nissan" section. The price of a fuse is from 10 to 50 rubles, a relay is 200–800 rubles.
• 🌍 Online stores: Exist.ru, Autodoc, Emex. Convenient to select by VIN or catalog number.
• 🔧 Showdown: if you need rare relays (for example, for diesel versions), you can find used spare parts.

When purchasing a relay, pay attention to catalog numbers:

• 25230-31U00 — starter relay;
• 25230-31U10 — cooling fan relay;
• 25230-31U25 — high beam relay.

⚠️ Attention: There are often counterfeit Chinese-made relays on the market (for example, with the inscription "Made in Japan", but without the brand logo). Such relays may burn out after a few months. Check the packaging for the presence of a hologram and barcode.

FAQ: Frequently asked questions about Nissan Terrano 1 fuses

Is it possible to replace the fuse with a higher rating if it keeps blowing?

No! Increasing the fuse rating may result in melted wiring or a fire. If the fuse burns out repeatedly, look for the cause (short circuit, faulty consumer) or contact an auto electrician.

Where is the cigarette lighter fuse located?

In the main mounting block under the hood there is a fuse F10 (15A). On some versions it may be designated as CIGAR.

Why do the headlights not work after replacing the fuse?

Possible reasons:

• Bulbs are burnt out (check both headlights).
• Light relay faulty (R5 or R6).
• The contacts in the fuse box have oxidized.
• The problem is in the light switch (check the switch handle).

Which fuse is responsible for the stove (heater)?

The fuse controls the operation of the heater fan F6 (20A). If the heater is not blowing, also check the fan relay (R3) and the motor itself (it is located under the panel on the passenger side).

Can fuses from other cars be used?

Yes, if they match face value And type (in Terrano 1 - knife blade). For example, fuses from Toyota, Mitsubishi or VAZ (if the denomination and size are the same).