No spark on Nissan Almera G15 (2012–2018, engines HR16DE And K4M) is one of the most insidious malfunctions that can immobilize a car for a long time. Unlike obvious problems like a dead battery or broken starter, finding the cause requires a systematic approach: from checking the spark plugs to diagnosing the ECU. In this article we will analyze all possible reasons - from the banal to the exotic, - and we will also give step by step instructions with photos and diagrams for self-repair.

Feature Almera G15 is that its ignition system is integrated with the immobilizer and engine control unit (ECU). This means that the problem may lie not only in the hardware, but also in software failures. We collected data from Nissan service manuals, owner reports from forums (including Drive2 And Almera-Club) and experience of auto electricians to provide unique information about the typical “jambs” of this model, which are not in general manuals. For example, why on Almera with HR16DE The crankshaft position sensor often “glitches” at low temperatures, or how to trick the immobilizer to check the spark without a key.

1. Symptoms of no spark: how to accurately diagnose the problem

Before you disassemble half of the car, make sure that the problem is the lack of a spark. On Nissan Almera G15 it shows up like this:

  • 🔥 Engine won't start at all (the starter turns, but there is no “popping” in the exhaust pipe).
  • 💨 From the exhaust pipe smells like gasoline — fuel is supplied, but does not ignite.
  • 🔋 On the dashboard "Check Engine" light on (error codes P0300–P0304, P0351–P0354).
  • 🔧 When checking the candles they dry (no gasoline sticking) or filled with fuel.

To 100% confirm that there is no spark, do the following test:

  1. Unscrew one candle (for example, from 1st cylinder).
  2. Paste it into high voltage wire tip.
  3. Press the candle to engine weight (for example, to a valve cover).
  4. Crank the engine with the starter. If there is no spark, the problem is confirmed.
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Use arrester or spark tester (costs ~300 rubles) so as not to risk electric shock and not damage the ECU with static discharge.

Important: on Almera G15 You can’t check the spark “on weight” (holding a candle in his hand)! This can lead to breakdown of the ignition coil or damage to the transistors in the control unit. Also remember that on the engine HR16DE individual ignition coils, and on K4M - general module.

2. Top 7 reasons for lack of spark on Nissan Almera G15

Let's consider all the possible culprits of the problem, from the simplest to the most complex. Let's start with what you can check without tools, and we’ll finish with diagnosing the ECU.

Reason Symptoms How to check Repair cost
Faulty spark plugs Engine troubles, errors P0300–P0304 Visual inspection, spark test from 300 rub. (candles)
Breakdown of high-voltage wires Weak or no spark on all cylinders Check with a multimeter (resistance 5–10 kOhm) from 1,500 rub. (set of wires)
Faulty ignition coil Errors P0351–P0354, no spark on cylinders 1–2 Replacement of the coil (if the problem continues, the coil is to blame) from 2,500 rub. (for 1 piece)
Crankshaft position sensor (CPS) Engine does not start, no spark or injection Check with an oscilloscope or replace with a known good one from 1,200 rub.
Engine control unit (ECU) No spark on all cylinders, control circuit errors Diagnostics with a scanner, checking power and mass from 5,000 rub. (repair)

On Almera G15 There is unique feature: If the immobilizer does not recognize the key, it may block the spark. In this case, the starter will turn and fuel will be supplied. To rule out this reason, try starting the car second key or check the immobilizer indicator on the dashboard (should flash 1 time and go off).

📊 What modification of Nissan Almera G15 do you have?
  • 1.6 (HR16DE)
  • 1.5 (K4M)
  • I don't know
  • Other

3. Diagnostics of spark plugs and high-voltage wires

Let's start with the simplest thing. On Nissan Almera G15 candles recommended NGK IFR6T11 (for HR16DE) or NGK BKR6E-11 (for K4M). If others are standing, this is already a potential cause of the problem.

Unscrew all spark plugs and inspect for cracks, carbon deposits, and oil.

Check the gap (should be 1.0–1.1 mm for HR16DE and 0.9 mm for K4M)

Test the spark on each spark plug (see instructions above)

Replace the spark plugs - if the problem continues, the spark plug is to blame -->

High voltage wires on Almera G15 often “glitch” due to moisture getting into the connectors. To check them:

  1. Remove the wires from the coils and spark plugs.
  2. Measure the resistance of each wire with a multimeter. Norm: 5–10 kOhm.
  3. Inspect for cracks or punctures (especially cerca connectors).

If the wires are broken, you will see dark spots on the insulation or hear a characteristic crackling sound when the engine runs in the dark. On Almera with HR16DE individual coils, so there are no high-voltage wires - the spark comes directly.

How to check ignition coils without a scanner?

1. Swap the coils from the 1st and 4th cylinders.

2. If the problem (lack of spark) moves to another cylinder, the coil is to blame.

3. On K4M (1.5) there is only one ignition module for all cylinders, so check it by replacing it with a known good one.

4. Crankshaft position sensor (CPS): why is it to blame in 30% of cases

DPKV on Nissan Almera G15 - this is the most critical sensor to form a spark. If it's faulty, the ECU doesn't know when to spark and just blocks ignition. Signs:

  • 🚗 The engine does not start at all (the starter turns, but there are no signs of life).
  • 🔧 Bugs P0335 or P0336 (DPKV circuits).
  • 💡 The “Check Engine” may not light up on the dashboard (the ECU does not receive a signal at all).

How to check DPKV:

  1. Remove the sensor (located next to the crankshaft pulley).
  2. Measure the resistance between the terminals: it should be 500–700 Ohm.
  3. Check the voltage at the connector with the ignition on: 12 V on one contact, 0 V on the other.

On Almera G15 There is feature: if the DPKV “dies” gradually, the car may start every other time or stall while driving. The sensor may also malfunction when low temperatures (below –10°C) due to condensation in the connector. Try drying the contacts or treating them WD-40.

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If the DPKV is faulty, the engine will not start under any circumstances - even “from the pusher”. This is a key sign for diagnosis.

5. Problems with the ECU and immobilizer: when the electronics are to blame

If all previous checks have failed, the problem may be engine control unit (ECU) or immobilizer. On Almera G15 This is a common problem, especially after:

  • 🔌 Battery disconnects (immo settings are reset).
  • 💻 Unsuccessful chip tuning or flashing the ECU.
  • 🚗 Replacing a key or ECU without connection to the immobilizer.

How to diagnose:

  1. Check Is the immobilizer indicator flashing? (red car on the tidy). If it blinks constantly, the key is not recognized.
  2. Connect the scanner (for example, ELM327) and check for errors in the circuits U1000 (connection with immo) or B2600 (key malfunction).
  3. Check the power supply to the ECU: 12 V on pin 1 (red wire) and ground on pin 2 (black wire).

If the problem is in the immobilizer, you can try:

  • 🔑 Restart the key learning procedure (see instructions below).
  • 🔧 Disable the immobilizer programmatically (a soldering iron and ECU firmware are required).
  • 🚗 Replace block NATS (Nissan immobilizer system) along with the keys.
How to learn immobilizer keys on Almera G15?

1. Insert the first key into the ignition.

2. Turn on the ignition (do not start!) for 5 seconds - the immo indicator should blink.

3. Turn off the ignition and repeat step 2 for the second key.

4. After training both keys, start the engine - if it starts, the procedure was successful.

Attention! If the ECU “went into protection” (for example, after unsuccessful firmware), it can only be brought back to life by flashing it via K-TAG or similar equipment. Independent attempts to reset the settings (for example, by removing the battery terminal) may aggravate the problem.

6. Checking power and ground circuits: hidden problems

On Nissan Almera G15 there are often problems with massive wires, especially in places where they are attached to the body. If the mass is “rotten” or oxidized, the ECU and sensors may not work correctly, which leads to a lack of spark.

Key points to check:

  • 🔋 ECU weight — under the dashboard, next to the block (black wire to the body).
  • 🔌 Ignition coil weight - on the cylinder head (cylinder head).
  • ⚡ Battery weight — from the “–” terminal to the body (often oxidizes).

How to check:

  1. Disconnect the negative terminal of the battery.
  2. Clean all mass points to a shine (use sandpaper or a metal brush).
  3. Check the resistance between the ECU ground and the body - there should be 0 ohm.
  4. Apply to contacts lithol or copper grease for protection against corrosion.

Also check fuses And relaythose responsible for the ignition system:

  • 🔥 Fuse F14 (10 A) - ECU circuit.
  • ⚡ Relay K9 — main relay of the engine control system.

Attention! On Almera G15 relay K9 often “sticks” due to moisture getting into the fuse box (located under the hood, next to the battery). If the car does not start after washing or raining, first dry the unit with a hairdryer.

7. What to do if there is no spark on all cylinders

If after all checks there is no spark not on any cylinder at all, the problem is most likely in:

  1. ECU (does not generate a signal to the coils).
  2. Ignition control circuits (break or short circuit).
  3. Immobilizer (blocks system operation).

Algorithm of actions:

  1. Check availability 12 V on ignition coils (contact “+”) with the ignition on.
  2. Measure the resistance between the coil control contacts (on the ECU connector) - it should be 0.5–1 Ohm.
  3. If everything is in order, but there is no spark, remove the ECU and check for swollen capacitors or signs of corrosion.

On Almera G15 with HR16DE There is hidden problem: if all coils fail at the same time, the culprit may be transistor switch in the ECU, responsible for ignition control. In this case, only repairing the unit or replacing it will help.

Attention! If you decide to replace the ECU, you need to flash for your immobilizer or use the block from the donor machine along with the keys and the NATS block. Otherwise the engine will not start.

FAQ: Frequently asked questions about lack of spark on Nissan Almera G15

Is it possible to start the Almera G15 without a spark “from the pusher”?

No. If there is no spark, the fuel will not ignite, so the engine will not start either from the pusher or the tow. Unlike diesel engines, where the fuel is ignited by compression, a gasoline engine Almera a spark is needed.

Why is there no spark when it's cold, but when it's hot?

This is a typical symptom faulty DPKV or bad contact in its connector. At low temperatures, the sensor may give incorrect signals due to condensation or microcracks in the wiring. Try warming up the sensor with a hairdryer or replacing it with a new one.

What spark plugs are best for Almera G15 1.6 (HR16DE)?

Officially recommended candles - NGK IFR6T11 (iridium) or Denso FK16HR11. The gap should be 1.0–1.1 mm. Do not install cheap analogues - they often cause misfires.

Could the lack of spark be related to the alarm?

Yes, if the alarm is connected to the ignition or immobilizer circuits. Some models (eg StarLine or Pandora) can block the spark if there is a failure. Check whether the alarm diode is blinking abnormally and try to turn it off during diagnostics.

How much does it cost to diagnose a lack of spark in a service?

The cost depends on the region and level of service:

  • 🔧 Basic diagnostics (scanner + checking spark plugs/coils) — 1,000–2,000 rub.
  • 💻 In-depth diagnostics (oscilloscope, ECU check) - 3,000–5,000 rub.
  • 🔑 Immobilizer diagnostics - 2,000–4,000 rub.