Car engine management system Nissan Almera Classic critically depends on the accuracy of the data coming from the sensors. One of the most important elements here is the crankshaft position sensor (CPS). It is this component that informs the electronic control unit (ECU) about the rotation speed and position of the pistons, which is necessary for the formation of a spark and fuel injection.
If you are faced with the fact that the car does not start, stalls while driving, or runs intermittently, the problem often lies in this device. Crankshaft sensor on model with engine G15 or HR15DE has a specific location that may not be obvious to a beginner. Understanding exactly where it is installed and how to get to it will save you time and money on a visit to the service center.
Location of the sensor on the G15 engine
In cars Nissan Almera Classic With a 1.6-liter gasoline engine (engine code G15), the crankshaft sensor is located at the bottom of the engine, near the flywheel. It is mounted directly on the clutch housing (gearbox housing) when viewed from the driver's side, but is most often accessed from underneath the vehicle.
In order to visually detect the device, you need to look into the space between the engine and gearbox. DPKV is bolted to the housing and is directed directly to the flywheel ring gear. The distance between the sensor tip and the flywheel teeth is only a few millimeters, which ensures highly accurate pulse reading.
It is important to note that access to this unit is often difficult due to the proximity of the subframe and exhaust system components. In some cases, it may be necessary to remove the engine guard or even remove the wheel to obtain a normal viewing angle and access with tools. Where is the crankshaft sensor located?, if you look at the engine diagram? This is the right side (in the direction of travel), closer to the rear of the engine compartment, but deep in the engine compartment.
Signs of failure and diagnostics
A failure of the crankshaft position sensor almost always results in immediate engine shutdown. The ECU protection system will not allow the engine to start or continue to operate without a signal to rotate the crankshaft. You may notice the following symptoms that indicate problems with DPKV:
- 🛑 The engine does not start, the starter turns, but there is no flash in the cylinders.
- 🛑 Sudden stop of a running engine while moving without the possibility of subsequent restart.
- 🛑 Floating speed at idle and unstable engine operation.
- 🛑 Error P0335 appears on the dashboard or when scanning OBDII.
For accurate diagnosis, you must use a scanner or multimeter. Trouble P0335 indicates a lack of signal from the sensor circuit. However, before changing the part, it is worth checking the integrity of the wiring harness. Often the problem lies not in the sensor itself, but in oxidized contacts or frayed insulation of the wire leading to Nissan Almera Classic.
⚠️ Warning: Do not try to start the engine repeatedly if it stalls immediately after starting. This can cause the battery to discharge and flood the cylinders with gasoline, making the situation worse.
- The car won't start
- Stalls while driving
- The revolutions are floating
- Error P0335
Procedure for checking the sensor with a multimeter
If you suspect a problem, the first step should be to check the electrical parameters. You will need a digital multimeter set to measure resistance. The crankshaft sensor is an inductive coil, so its resistance must be within a certain range.
To check, you need to disconnect the connector from the sensor. Measure the resistance between the contacts of the sensor itself. Normal value for most models Nissan is a resistance in the range of 500–1000 Ohms (the exact value depends on the batch, but sharp deviations indicate a breakdown). If the device shows a “break” or zero resistance, the part must be replaced.
It is also worth checking the resistance between the sensor contacts and the “ground” (car body). It should tend to infinity. If there is a leak on the housing, the sensor produces incorrect signals. Don't forget to also check the voltage on the wiring harness going to the car: there should be supply voltage on one of the contacts (usually 5V or 12V, depending on the circuit).
Step-by-step replacement instructions
Replacing the sensor with Nissan Almera Classic - a task of medium complexity that does not require engine removal. You will need a set of wrenches, specifically a 10mm socket, and possibly an extension. It is better to carry out work on an inspection pit or overpass, since the sensor is located in the lower part.
First you need to remove the engine crankcase protection, if installed. Then, having found the sensor, disconnect the electrical connector from it. It is secured with a plastic latch, which must be carefully pressed with a screwdriver so as not to break the fragile mechanism.
Unscrew the fastening bolt and remove the old one crankshaft sensor. Before installing a new part, be sure to clean the seat from dirt and oil. Install the new element, tighten the bolt moderately and connect the connector. The main thing when replacing is not to damage the sensitive tip of the sensor, since the slightest scratch can disrupt the reading of pulses.
☑️ DPKV replacement process
Frequent repair mistakes and nuances
Many car owners make the mistake of trying to replace the sensor without first checking the wiring. Often on Nissan Almera wiring in the engine area rubs against the body or suspension elements. If you simply install a new sensor but do not fix the short in the harness, the problem will return very quickly.
It is also important to ensure correct installation orientation. Although the sensor is symmetrical, the connector must face in a convenient direction for connection. If you are using a non-original part, make sure that it is completely identical to the original in length and body shape. Otherwise, the gap to the ring gear may not match.
⚠️ Attention: After replacing the sensor, do not forget to reset the ECU adaptations. Sometimes the computer “remembers” the errors of the old sensor, and the car may operate unstably for the first 50-100 kilometers.
What to do if the new sensor does not work?
Sometimes new parts from the store turn out to be defective. If after installation the error does not disappear, check the ignition system fuse and the integrity of the ECU itself.
Features and Compatibility Table
To select the correct spare part, it is important to know the technical characteristics of the original device. Below is a table that will help you distinguish a standard sensor from analogues and understand the main operating parameters.
| Parameter | Meaning | Note |
|---|---|---|
| Original number | 23731-ED000 | Main article for G15 |
| Sensor type | Inductive | Works without external power |
| Resistance | 500-900 Ohm | Acceptable range |
| Number of contacts | 2 | Minus and signal |
| Housing material | Plastic/Metal | Heat resistant |
When choosing an analogue, pay attention to reviews about the manufacturer. Parts from trusted brands such as NTK or Denso, usually show high reliability and accuracy of operation. Cheap Chinese copies may have unstable resistance, which will lead to false alarms of the engine protection system.
Maintenance and Prevention
The crankshaft sensor is a device with no moving parts, so it should theoretically last forever. However, the aggressive environment under the hood, vibrations and temperature changes shorten its lifespan. Regularly checking the condition of the wiring harness is the best prevention.
At each scheduled maintenance, inspect the wiring in the transmission area. If you see cracks in the insulation or signs of oxidation on the contacts, take immediate action: insulate the wire or replace the connector. Keeping the probe tip clean is also important: dirt or metal shavings stuck to it can shield the magnetic field.
If you are replacing the sensor yourself, apply a thin layer of heat-resistant sealant to the junction of the sensor and the housing to prevent moisture and oil from entering the electrical part.
Regularly checking the integrity of the wiring and cleanliness of the contacts can prevent sudden engine stops on the road.
Results and recommendations
Knowing that where is the crankshaft sensor located on Nissan Almera Classic, allows you to quickly respond to faults. Correct diagnosis and timely replacement of this element will restore reliability to your car. Remember that cheap spare parts often cause repeated breakdowns, so skimping on critical engine control components is not worth it.
If after all the manipulations the problem is not solved, perhaps the fault lies deeper - in the ECU itself or in the mechanical part of the engine. In such cases, it is better to contact professionals who have specialized equipment for in-depth diagnostics of control systems Nissan.
Why does the engine stall after warming up?
When heated, materials expand. If the sensor has microcracks in the winding, there is contact during a cold start, but when it warms up it disappears due to expansion, which leads to the motor stopping.
Is it possible to drive with a faulty crankshaft sensor?
No, that's impossible. Without a signal from the DPKV, the ECU cannot generate a spark and fuel injection, so the engine either will not start or will stall immediately.
Do I need to do training after replacing the sensor?
For Nissan Almera Classic No special software training for the sensor is required. Simply plug in the connector and start the engine. However, resetting adaptations through the scanner can improve idle performance.
How to distinguish an original sensor from a fake?
The original has clear markings, high-quality plastic molding and smooth contacts. On fakes there are often errors in writing the part number, uneven seams and too light weight of the product.