Abs wheel speed sensor datasheet, cross reference, circuit and application notes in pdf format. Wheel speed sensor sensor technology metropolia confluence. Dodge viper abs speed sensor front and rear abs sensor. Sponsored links if you have gone through all these steps and you still have a code for one of the sensors the only other possibility is an open circuit somewhere in the wiring which can be found by a pin to pin check which test of the wiring. Some vehicles even compare the wheel speed sensor readings against the vehicle speed sensor vss to make sure all of these sensors are accurate and working correctly. With more than 50,000 products ranging from snapaction, limit, toggle, and pressure switches to position, speed, pressure, and airflow sensors, honeywell has one of the. A passive wheel speed sensor is po sitioned directly adjacent to a toothed impulse or tone ring. Comment valid at 0 hours removed from table 6 magnetic induction area. If you are replacing a wheel bearing on a latemodel vehicle, you will be dealing with a wheel speed sensor.
The control unit may require the sensor signal to be above a certain amplitude and the signals amplitude may be just too low for the control unit to deal with it at low speeds. Spc speed sensor single or dual flange the spc speed sensors have been designed as simple compact sensors suited to the demanding motorsport and automotive testing industries. The speed sensor uses only 1 pin that goes from low to high to detect holes in the encoder disc. Wheel speed sensor for abs systems preliminary technical data ad22157 features speed and direction from 0hz to 2500hz air gap diagnostics 2wire currentloop operation wide operating temperature range functional during temperature excursions to 190c reverse supply protected 30v applications automotive. In the past decade, wheel speed sensors have been moving to inside or on the wheel bearing or hub unit. Wheel speed sensors wss provide essential wheel speed information not only for antilock brake systems abs, but also for traction control and stability control systems. We offer high quality new, oem, aftermarket and remanufactured dodge viper abs speed sensor parts. If the power indicator does not illuminate, replace the battery in the abs active wheel sensor tester before proceeding. The postconnected evaluation unit then returns defined currents of 7 ma gap or 14 ma tooth. Look for this sensor on your wheel hubs, near the brake rotors. How to test a wheel speed sensor in under 15 minutes. Dscs fault codes stored from two different wheel speed sensors both front or both rear. Rotational speed sensors kmi1516 application note an98087 9 the kmi sensor modules of philips semiconductors can also be used to measure direction of rotation.
The control systems for abs, tcs and esc determine the wheel speed based on signals sent by the wheel speed sensors. Use an oscilloscope, connected to the sensor, and spin the wheel. Mazda 3 service manual front abs wheel speed sensor. Without a working abs wheel speed sensor, the abs system will fail to work properly.
The 9503 universal leaded speed sensor ulss was specifically designed with the tough requirements of the heavy vehicle and off road market in mind. Bendix ws20 wheel speed sensor manual pdf download. The conventional passive sensor consists of a magnetic pin with fine copper wire wrapped around to create a magnetic field. At this location, the wheel speed sensors are more accurate and often more protected from the. The rotational speed of the wheels is transmitted from the sensor to the control unit and from there to the transmission, engine, navigation and chassis control systems. A wheelspeed sensor consists of a silicon integrated circuit in the sensor head, which is hermetically sealed with overmolded plastic. A wheel speed sensor or vehicle speed sensor vss is a type of tachometer.
Set the vehicle on a stand so that the front left wheel spins easily. Wheel speed sensors typically include a toothed or optically encoded shaft and a magnetic or optical sensor. Youll find the rear wheel speed sensor mounted on the rear axle housing or wheel cylinder. Wheel speed signals are prepared by the impulse ring mounted on the brake disc or drive shaft and the corresponding wheel speed sensor. It does not require a magnet to trigger it, just a moving metal target, for example a bolt on the back of the brake disk.
Search our online abs speed sensor catalog and find the lowest priced discount auto parts on the web. Push sensor to contact tone ring, should have no more than. The red sensor indicator should flash on and off to indicate an output signal. Spin the wheel of the vehicle by hand and observe the red sensor indicator on the abs active wheel sensor tester. The wheel speed sensor can tell if a tire stops rotating or locks up, and it sends that signal to the antilock brake system so it can relieve pressure and allow the wheel to turn. Article pdf available in sensors 62 february 2006 with 676 reads. Improving the response of a wheel speed sensor by using a rls lattice algorithm. Wheel speed sensors are a necessary abs component and sensor input. Wheel speed sensor magnetic encoder ring north and south poles are shown new bearing design. The road wheel speed measured by the speed sensor provides the wheel deceleration and wheel acceleration signals for the electroniccontrol unit. Check the output pattern for interference and the correct shape passive sine wave, active square wave. Since we will be using interrupt zero to read the speed sensor, we need to connect it to pin 2 interrupt 0 pin on the uno. The active, magnetoresistive wheel speed sensor was designed to combat the weak lowspeed signal characteristics of passive sensors.
Wheel speed sensors mount on each wheel to record individual wheel speeds, and activate a signal after the. Rotational speed sensors kmi1516 nxp semiconductors. This information is used to prevent the wheels from locking and determine when the wheels are spinning, taking appropriate control action. A small bolt fastens the sensor, and a toothed ring is mounted to the cv joint, wheel hub, or the differential ring gear. Wheel speed sensor tle5041plusc data sheet atv sc infineon. Such a varying magnetic field is then forwarded to the control unit as a signal via the wheel speed sensor. Type df6 on page 12 type df10 on page type df10rotdir on page 14 type df11i on page 15 type vda on page 17. Using proven hall effect sensing technology, the spc detects a change in. The abs sensor is a vital part of the braking system. In some designs, the active sensor uses a tone ring and a permanent magnet like the variablereluctance passive sensor.
Theyre magnetic, and metal debris can collect at the tip, and the reluctor wheel can become. Look for damaged wires, sensors or a build up of road dirt etc. Wheel speed sensor sk aoctbs variable reluctance 48 teethrev digital counter. More than 90% of vehicles on the road today are equip ped with wheel speed sensors. If a code indicates a problem with one of the wheel speed sensors, inspect the tip for debris and the sensors ring for damage. Automotive wheel speed sensor market statistics and. Wheel speed sensors in motor vehicles function, diagnosis. Your speed sensor automatically detects your wheel size. We specialize in a widevariety of highquality car parts and accessories for your car, truck or suv. Consequently, a passive sensor s signal may not come on line as far as the control unit is concerned until vehicle speed is 5 mph or greater. Test for correct sensormagnet placement before permanently t for correct sensormagnet placement before permanently mounting. The sp series of wheel speed sensors have been designed as simple compact sensors suited to the demanding motorsport and onvehicle automotive testing applications. The active sensor is a proximity sensor with integrated electronics supplied with a voltage defined by the abs control unit.
You can also measure the circumference of your wheel or use one of the calculators available on the internet. Wheel speed sensor n 2006 land rover range rover sporthse from chassisvin 6a924697 4. Each time an exciter tooth and its adjacent space move past the tip of the sensor, an ac voltage cycle. The controller counts the number of pulses to determine wheel speed and evaluates whether the abs system should intercede to control braking.
Pdf among the complete family of sensors for automotive safety, consumer andindustrial application, speed sensors stand out as one of the most. When the wheel speed sensor is broken or not working as it should, one of the first things that are affected is the abs system. General wheel speed sensing abs esp indirect tire pressure monitoring itpms product type package tle5041plusc pgsso253 data sheet 7 v 1. The earliest wheel speed sensor designs are classified as passive. If necessary, you can manually enter your wheel circumference in the speed sensor settings. Pdf improving the response of a wheel speed sensor by using a. The sensor will function from a 12 to 24 vdc power supply. Wheel speed sensors may monitor the crankshaft or driveshaft rotation in vehicles that do not need to know the rate at which individual wheels are turning.
It is ideal for abs sensor applications, while offering customers flexibility in variations and features. Wheel speed sensors active and passive know your parts. Received on 22 december 2017, accepted on 25 april 2018, published. Magnetic encoder ring some new model vehicles today have begun to use a different type of wheel speed sensor encoder ring or tone wheel. The 2016 formula sae vehicle electrical systems design project provided enhanced electrical. The rotation of the impulse wheel and the resulting switching from tooth to tooth space brings about a change in the magnetic flow. A separate sensor and pulse wheel are often employed. Developed for the antiblock braking system, wheel speed sensors send information to many onboard electronic systems. The product range includes both active and passive wheel sensors special training courses on modern electronic braking systems and their components are included in the ate training offer appropriate diagnostic equipment and tools are available for perfect diagnosis and repair in the trade, in the workshop, in the ate catalog or on the internet. The proven speed sensor has gone through vigorous testing, both in the lab and on the field. Wheel speed sensing abs or stability control systems with itpms feature. C1101 c1104 wheel speed sensor 1, andor c1105 c1108 wheel speed sensor 2, is stored in the related ecu.
Install the front abs wheelspeed sensor to the removed the wheel hub, steering knuckle component, and tighten to the specified torque. Antilock braking system abs and its working aermech. Pdf emulation of wheel speed sensors for automotive electronic. The sensor counts the rate at which the teeth or marks pass by. This requires two sensor modules placed to the target wheel at different positions. The wheel speed sensor is responsible for relaying the wheel speed to the ecu so that it can tell the abs system how much pressure to safely apply. Help with rear wheel speed sensor removal jeep wrangler. Passive and active wheel speed sensors can look similar, but their operation is dissimilar. At this location, the wheel speed sensors are more accurate and often more protected from the elements. Bosch wheelspeed sensor circuits use hall technology, which incorporates the hallsensing element, signal amplifier and signal processing all on a single chip. It is used to inform the abs control module of rotational wheel speed. Ad22157 wheel speed sensor components datasheet pdf data sheet free from datasheet data sheet search for integrated circuits ic, semiconductors and other electronic components such as resistors, capacitors, transistors and diodes. Wheel sensors are magnetic so check for metal shavings around the sensor which can hinder performance. Speed sensors convert the pulses created by the contact between the magnet and sensor ring through a coil attached to the sensor.