Question about 2003 Hyundai Tiburon

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What is the function of wheel speed sensor - 2003 Hyundai Tiburon

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The wheel sensor sends the wheel speed to the computer for the ABS system.

Posted on Dec 12, 2012

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Speed sensor sends a signal to the on-board computer reporting the vehicle speed

Posted on Dec 12, 2012

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Can a bad speed sensor cause awd disable light to come on


Yes and no. Just depends on what it is called. ABS sensor and wheel speed sensor are the same thing and function the same way. That is what is going to be bad and there is one on each wheel. Put the car on a computer at the mechanics shop and they can tell you which wheel sensor is going out.

Sep 25, 2016 | Cars & Trucks

1 Answer

Anti-lock function on brakes is triggered by applying brakes while steering wheel is turned hard over


Sounds like you are losing wheel speed signal when under hard turns. This is commonly caused by the harness at or near the wheel speed sensor has a bad connection of there may be a break in the wiring that intermittently loses signal to the ABS module and causes the anti-lock function to happen, (loss of wheel speed is like wheel skid as far as the ABS module is concerned) It is usually necessary to have a scan tool to monitor the data and read codes on the ABS system. You may have to take vehicle to shop that is capable of diagnosing the problem.

Oct 13, 2015 | 2003 GMC Sierra 1500

1 Answer

Traction control light and abs light is on


Hi Tony, It sounds as if one of the wheel speed sensors has become defective. Have a scan carried out to determine which sensor it is and then either clean or replace it. The speed sensors on modern vehicles carry multiple tasks and are interlinked with a variety of functions. One defective sensor can be responsible for faults in traction control, ABS mal function and even gear change problems with automatic gearbox's Regards John

Oct 06, 2012 | 2007 Chevrolet Avalanche LTZ

2 Answers

Where is my speed sensor located?


Hi.

The vehicle speed sensor or VSS is located on top of the transmission, on the output shaft. This sensor provides input to the speedometer on instrument cluster. There are also 4 wheel speed sensors (one on each wheel). Their primary function is to detect wheel speed to control ABS.

Below a picture of the VSS sensor:

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Sep 08, 2011 | 1999 Ford Windstar

1 Answer

Where is the speed sensor located on 1996 mitsubishi rs 2.0 non turbo


There is actuly 3 of them one on each front wheel that sence the speed that the wheels are turning . And one on the transmission tail stock that sences the speed the transmission is turning . The vehicle control module compares information and corrects brake and engine functions as well as shift functions . The most likely ones are the front wheel ones that are giveing you problems because they get water and road salt witch tends to corroad the the connecters to them . That would be ware to start looking for problems . Keep im mind that all of these sensors generate voltage there little generators that create what is called a refferance voltage of about .5 volts DC and be tested by spinning the wheels and haveing a volt meter hooked to the output wires from the connectors

Jul 19, 2011 | 1996 Mitsubishi Eclipse

2 Answers

ABS and OD lights are on and transmission is kicking out could this all be related


Could be a fuse or a wheel speed sensor; next, check the tone rings on the axle shafts and see if they are not broken.

I quote this information from Jeep lover's...

The amber ABS warning lamp is located in the instrument cluster. It is used to inform the driver that the antilock function has been turned off due to a system malfunction. The warning lamp is controlled by the CAB and/or the main relay through an in-harness diode. The CAB controls the lamp by directly grounding the circuit. The main relay grounds the lamp circuit when it is de-energized.
The re BRAKE warning lamp is located in the instrument cluster. It can be activated by application of the parking brake or leak in the front or rear wheel brake hydraulic circuit.
The antilock brake controller (CAB) is a microprocessor-base device that monitors wheel speeds and controls the anttlock function.
The primary functions of the CAB are:
- monitor wheel speeds
- detect wheel locking tendencies
- control fluid pressure modulation to the brakes during antilock stop operation
- monitor the system for proper operation
- provide communication to the DRB while in diagnostic mode
- store diagnostic information in non-volatile memory
The CAB continuously monitors the speed of each wheel. When a wheel locking tendency is detected, the CAB will command the appropriate valve to modulate brake fluid pressure in its hydraulic unit. Brake pedal position is maintained during an antilock stop by being a closed system with the use of 3 accumulators. The CAB continues to control pressure in individual hydraulic circuits until a wheel locking tendency is no longer present. The CAB turns on the pump/motor during an antilock stop.
The antilock brake system is constantly monitored by the CAB for proper operation. If the CAB detects a system malfunction, it can disable the antilock system and turn on the antilock warning lamp. If the antilock function is disabled, the system will revert to standard base brake system operation.
The CAB inputs include the following:
- four wheel speed sensors
- stop lamp switch
- ignition switch
- main relay voltage
- pump/motor relay output
- diagnostic communication ISO/K
- G switch (acceleration switch)
The ABS main relay is located in the power distribution center (PDC). The main relay has two functions. First, when the relay is energized, it supplies power to the valve/solenoids in the valve block assembly and the pump/motor relay coil. Second, when the relay is de-energized, it supplies a ground to turn on the ABS warning lamp. The main relay is controlled by the CAB. The CAB energizes the main relay when it receives an ignition input signal.
The ABS pump/motor relay supplies power to the pump/motor. It is also located in the PDC. The relay coil is powered by the main relay and the coil ground is controlled by the CAB. The pump/motor relay is a special five-terminal relay and should not be replaced with a standard relay.
One wheel speed sensor (WSS) is located at each wheel and sends a small AC signal to the control module (CAB). This voltage is generated by magnetic induction when a toothed sensor ring (tone wheel) passes by a stationary magnetic sensor (wheel speed sensor). The CAB converts the AC signals into digital signals for each wheel.
The front wheel speed sensor air gap is NOT adjustable. The correct front wheel speed sensor air gap is from 0.40mm to 1.3mm. Preferred rear sensor air gap for drum brake systems is 1.1mm. Acceptable air gap range is 0.92mm to 1.275mm. For rear disc brake systems, the preferred rear sensor air gap is 1.2mm. Acceptable air gap range is 0.95mm to 1.45mm. All wheel speed sensors have a resistance between 900 and 1300 ohms.
Correct antilock system operation is dependent on tone wheel speed signals from the wheel speed sensors. The vehicle's wheels and tires should all be inflated to the recommended pressures for optimum system operation. Variations in wheel and tire size or significant variations in inflation pressure can produce inaccurate wheel speed signals; however, the system will continue to function when using the mini-spare. When driven over rough road surfaces, the rear wheel speed sensor signals may be erratic and cause a false trouble code (drum brakes only).
Diagnostic trouble codes are retained in memory until erased using the DRB, or automatically erased after 50 key cycles.
Ensure you are using a DRBIII scan tool properly connected to the data link connector located under the dash to the right of the steering column.
Select "Anti-lock Brakes" the "Teves ABS". Turn the ignition on.
Read and record all ABS diagnostic trouble codes. If the "Valve Power Feed Circuit" trouble code is present, it must be repaired before prior to addressing any other DTCs.
If there are no trouble codes present, select "Inputs/Outputs" and read the brake switch input as you press and release the brake pedal. If the display does not match the state of the pedal, check for 8 volts at the brake lamp switch output circuit. If the voltage is not present, repair the open brake lamp switch output circuit. If the voltage is present, replace the CAB.
If the display does match the state of the pedal, read the "G-Switch" status, with the vehicle on a level surface, both switches should read "CLOSED". If the status is not correct, make sure the G-Switch is properly mounted and connected (under the driver's side rear seat). If it looks correct, you'll have to check for voltage to the G-Switch.

Hope helps.

Jan 18, 2011 | 1995 Jeep Grand Cherokee

1 Answer

ABS and ESC off light came on. I cannot shut it off by making or breaking the switch. What does the ABS and ESC have to do with each other?


ABS = anti-lock braking system, ESC = electronic stablity control... they both use wheel speed sensors to function, so if you have a bad wheel speed sensor they both will throw codes and not operate.

Jan 04, 2011 | 2006 Hyundai Sonata

1 Answer

Check traction control


traction control's speed sensor in the wheel's hub assembly is probably not functioning correctly, not sensing right speed.

Change the speed sensor, sometimes it's included in the hub assembly.

Aug 11, 2010 | 1997 Lincoln Continental

1 Answer

Speed sensor problems


speed sensor tells the pcm how fast the car is going, Also it serves to tell the abs computer that the wheel speeds are the same, and triggers the abs in the event of a slide. Some speed sensors controll how the trans shifts as well as speedometer operations :)

Jun 16, 2010 | 1999 Dodge Durango

2 Answers

Speedometer stop working where's the cable?


Your vehicle does not have a traditional speedometer cable. Instead it uses a VSS (Vehicle Speed Sensor) to read speed of the vehicle below is a short test to help you determine if it is the VSS that has failed.

SPEEDOMETER VEHICLE SPEED SENSOR TEST

1. Press and release trip odometer button until function number 6 appears in display window.

2. Turn a front wheel and observe display (pulses are added to number in display. Check impulse signal for speedometer vehicle speed sensor. If 7 pulses are generated per wheel revolution, vehicle speed sensor is okay.

3. If specified number of pulses are not generated, check for open in wiring harness between speed sensor and instrument cluster. Repair wiring harness if necessary. If wiring harness is okay, replace speedometer vehicle speed sensor.

Jan 21, 2010 | 1996 Volkswagen Passat

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