Anti-lock brake system (ABS) is a critical element of active safety in a modern vehicle, and Nissan Murano Z50 is no exception. This system works based on data from wheel speed sensors, which convert mechanical movement into electrical signals. If one of these elements fails, the electronic control unit (ECU) records the error, turns off the ABS system and the corresponding lamp on the dashboard lights up, which significantly changes the braking behavior on slippery surfaces.
Crossover owners Nissan Murano Z50 often face the need to diagnose or replace sensors, especially after 150 thousand kilometers. Operation in harsh winter conditions, frequent off-road driving, or the ingress of reagents into suspension mechanisms accelerates the wear of the wiring and the most sensitive element. Understanding the operating principles of the system and the ability to recognize signs of malfunction in time will help you avoid costly repairs and maintain safety on the road.
How the ABS system works on the Nissan Murano Z50
The system is based on a non-contact inductive sensor installed directly in or near the wheel hub, which reads marks on the gear ring (rotor) of the hub. When the wheel rotates, the sensor generates an alternating signal whose frequency is directly proportional to the rotation speed. The ECU receives data from all four wheels and compares them in real time, determining the start of wheel locking during heavy braking.
If the signal from one of the sensors is missing or has a distorted shape, the control unit makes a decision about a malfunction. In this case, the system is forcibly switched off and the braking system switches to operating mode without anti-lock. It is important to understand that the brakes themselves continue to work, but you will lose the ability to brake effectively on ice or wet asphalt without the risk of skidding.
On the model Nissan Murano Z50 the system is also integrated with Vehicle Stability Control (VDC) and Traction Control System (TCS). Therefore, a malfunction of the wheel speed sensor often leads to the lighting of not only the ABS lamp, but also the VDC OFF indicator, which can confuse an inexperienced driver.
Main symptoms of sensor malfunction
The first and most obvious sign of a breakdown is the yellow ABS light on the dashboard that comes on. In most cases, this is accompanied by a sound signal when the engine starts and a fault message appears on the on-board computer display. However, visual indicators do not always appear immediately, especially if the problem is intermittent, for example due to poor contact in the connector.
An indirect sign may be incorrect operation of the speedometer or odometer if the sensor on the drive axle is faulty. In some cases, you may notice that the brake pedal begins to vibrate or fall prematurely even when driving calmly, which indicates false alarms of the system due to incorrect data.
Another symptom is the failure of the tire pressure monitoring system (TPMS), which Nissan Murano Z50 often calculates pressure indirectly by comparing wheel speed. If the ABS sensor is faulty, the TPMS system will also generate an error or stop displaying current values.
- 🚨 ABS and VDC indicators light up on the instrument panel when starting the engine.
- 🚫 Complete failure of the traction control system (TCS) and exchange rate stability.
- ⚠️ Unpredictable behavior of the brake pedal during emergency braking on a slippery road.
Diagnostics and error reading
To accurately determine the malfunction, you must connect a professional diagnostic scanner to the OBDII connector located under the steering column. Simple Chinese adapters can only read basic engine codes, while the braking system will require hardware capable of handling ABS and VDC protocols. This will allow you to see the specific error code indicating the problem wheel.
The most common error codes for Nissan Murano Z50 begin with the prefix C (Chassis). For example, C1101 indicates a malfunction of the ABS signal generator, and codes C1130, C1135, C1140, C1145 correspond to specific speed sensors (right front, left front, right rear, left rear). Errors associated with an open circuit or short circuit are also common.
Visual inspection also plays an important role. It is necessary to inspect the wiring leading to the sensor for chafing, oxidation of contacts or damage to the insulation. Often the problem lies not in the sensor itself, but in the connector, which has become oxidized due to moisture and dirt.
⚠️ Attention: Do not attempt to clean oxidized ABS sensor contacts with simple solvents as this may damage sensitive electronics. Use only special contact cleaners with anti-corrosion protection.
- Up to 100,000 km
- 100,000 - 200,000 km
- More than 200,000 km
- I don't know for sure
Step-by-step instructions for replacing the sensor
Replacing the wheel speed sensor with Nissan Murano Z50 - a task of medium complexity that can be completed independently with a basic set of tools and a jack. The process begins by lifting the car and removing the wheel from the side where it is intended to be replaced. Please note that the sensors on the front and rear axles may have different mounting designs and wiring lengths.
Before starting work, you must disconnect the negative terminal of the battery to avoid a short circuit. Locate the sensor connector, which is usually located in the fender liner or on the frame near the hub. Release the wire harness clips and carefully disconnect the connector. Next, unscrew the bolt securing the sensor itself to the steering knuckle or hub.
Removing the old sensor can be difficult, as it often becomes stuck due to corrosion. Use light tapping with a hammer or penetrating lubricant, but be careful not to damage the threaded hole or sensing element. The new sensor is installed without the use of additional sealants, since it has a special rubber seal.
☑️ Preparing to replace the sensor
After installing a new element, you need to check its functionality. Connect the connector, return the battery terminal to its place and start the engine. If the error on the panel goes away after several trips at different speeds, then the problem is solved. If the lamp remains on, errors may need to be reset via the diagnostic scanner.
- 🛠️ Use a torque wrench to tighten the sensor mounting bolt (usually 8-10 Nm) so as not to strip the thread.
- 🧼 Clean the seat from rust and dirt before installing a new sensor.
- 🔌 Check the integrity of the wire of the new sensor before installation to avoid defects.
⚠️ Attention: If the error does not disappear after replacing the sensor, check the integrity of the toothed ring on the hub. Dirt, chips, or chips on the ring can cause the same symptoms as a faulty sensor.
Reasons for frequent failures and selection of spare parts
One of the main reasons why ABS sensors fail is Nissan Murano Z50 is exposure to road reagents and moisture. The design of the car assumes that the sensor is in an area of constant dirt and salts, which leads to accelerated corrosion of the contacts and destruction of the wire insulation. Particularly vulnerable are areas where the wire bends when turning the wheel.
When choosing a spare part, it is important to consider that there are original sensors and analogues. Original parts Nissan They are characterized by high reliability and calibration accuracy, but are much more expensive. High-quality analogues from trusted brands such as Denso or NTK, can be a worthy replacement if installed correctly.
You should not skimp on ABS sensors, as a low-quality analogue may fail after a few months or give false signals, which will lead to emergency situations. The original sensor has a special marking and wire insulation color, which differs from most cheap analogues.
| Position | Original number (Nissan) | Analogue (Example) | Note |
|---|---|---|---|
| Front left | 47631-5Y000 | Denso 480-0001 | Often comes complete with a hub |
| Front right | 47630-5Y000 | Denso 480-0002 | Check the wire length |
| Rear left | 47631-5Y001 | NTK 20000 | Integrated into the wheel bearing |
| Rear right | 47630-5Y001 | NTK 20001 | Integrated into the wheel bearing |
Why can a sensor be built into a bearing?
On some Nissan Murano Z50 models, the ABS sensor is an integral part of the wheel bearing. This means that if it malfunctions, the entire assembly will have to be replaced, which significantly increases the cost of repairs. This design increases reliability, but complicates maintenance.
Checking the sensor with a multimeter
If you do not have a diagnostic scanner, you can perform a preliminary test of the sensor using a conventional multimeter. To do this, you need to measure the resistance between the contacts of the sensor connector. The normal resistance value for ABS sensors is Nissan Murano usually ranges from 800 to 1600 ohms, but the exact values depend on the year of manufacture and the specific model.
It is also important to check the insulation. One multimeter probe is connected to one of the sensor contacts, and the second to the car body (ground). The readings should tend to infinity (break). If the multimeter shows any resistance or zero, then there is an insulation breakdown and the sensor is faulty.
Another method is to check the AC voltage. Lift the wheel, disconnect the sensor connector and connect the multimeter to AC voltage measurement mode. Spin the wheel quickly by hand. A small voltage (from 0.1 to 2 V) should appear on the screen, which will increase with increasing rotation speed. If there is no voltage, the sensor does not produce a signal.
Before replacing the sensor, be sure to clean the installation area from dirt, as metal shavings can become magnetized to the sensor and distort the readings even after installing a new element.
Impact on other vehicle systems
ABS sensor malfunction Nissan Murano Z50 affects not only the braking system. As mentioned, Vehicle Stability Control (VDC) and Traction Control System (TCS) are completely disabled. Additionally, the Emergency Brake Assist (EBA) system, which calculates braking force based on wheel speed data, may not function properly.
On some vehicle versions equipped with adaptive cruise control or automatic braking, a faulty sensor may completely disable these functions. The control unit simply will not have reliable data about the speed and distance to the obstacle.
It is also worth noting that during long-term operation with a faulty sensor, increased wear of the brake pads may be observed on the wheel from which the signal is not received. The ECU may mistakenly interpret the absence of a signal as a wheel stop, which will lead to incorrect operation of the brake force distributor.
Timely replacement of the ABS sensor is not just eliminating an error on the panel, but restoring the full range of active safety systems of the car.
FAQ: Frequently asked questions
Is it possible to drive with the ABS light on?
Technically you can drive, as the main brakes are working. However, you lose the anti-lock system, which is critical on slippery roads. The braking distance will increase, and there is a risk of skidding during emergency braking.
Do I need to reset the error after replacing the sensor?
In most cases, the error resets automatically after several cycles of starting the engine and warming up the system. However, if the lamp does not go out, it is recommended to force reset the errors through the diagnostic scanner.
Is it possible to replace only the sensor and not the wheel bearing?
This depends on the design of the unit. On the front wheels Nissan Murano Z50 The sensor is often replaced separately. On the rear wheels it can be built into the bearing, and then the entire assembly is replaced.
How much does it cost to replace an ABS sensor at a service center?
The cost of work varies from 1,500 to 3,000 rubles per wheel, depending on the complexity of access and the region. If a wheel bearing needs to be replaced, the cost of the work will be significantly higher.
Why does the error return immediately after a reset?
This indicates that the problem is not resolved. Perhaps the sensor itself is faulty, the wiring is damaged, the contacts in the connector are oxidized, or the hub gear ring is dirty.