How To Replace An ABS Wheel Speed Sensor

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Category:

Autos & Vehicles

Tags:

• ABS
• Wheel
• Speed
• Sensor
• automobiles
• instructions
• repair
• instructional video
• how-to
• cars
• diy

[DarkGiuseppe]

I have a question about the speed sensor. Is the output a unipolar square with an amplitude as high as 14V or is it something else (maybe bipolar sawtooth)? Are most cars nowadays magnetic type or Hall effect type ABS speed sensors? Can I follow the wiring up into the engine compartment? (I want to measure the signal with an o-scope) Sorry for the silly questions but I am want to acquire the signal to get speed data from it (EE project). The car I am working on is an Acura TL 2003? Thanks.

[canobd2]

The wheel speed sensors for your 03 TL are magnetic contactless type. As the gear pulsar teeth rotate past the wheel sensor's magnetic coil, AC current is generated. The AC frequency changes in accordance with the wheel speed. Hopefully this helps.

[RealDoubts]

i got a 1997 Mazda b3000 the speedometer doesn't work sometimes if i bang on the dash it works for a few seconds i took apart the speedometer and see if it was a loose connection put it all back together and still the same problem i have no idea what's wrong. And note the check engine light is on

[canobd2]

Do you know what code(s) you have? Your problem might be a bad connection (wiring), speedometer, or sensor?

[canobd2]

You should check to see what ABS code(s) you have, this will give you a place to start your diagnoses.

[gammah1]

@canobd2 Also if you think it's the ABS sensor how do you know which one ? i read few threads on the internet and they all mentioned the rear ones. why is that ?

and i know this might sound stupid but is the abs sensor and the speed sensor the same thing ? or they are 2 different things ? please help me :(

[gammah1]

@canobd2

hi man quick question, I have a Holden Barina 2006 and i keep getting the ABS light on shortly after driving , followed by the brake warning light. also when i brake sometimes i get a weird trembling noise that i can feel on the pedal. and last week i noticed that the speedometer needel sticks sometimes. happened to me 2 times. it sticks on a reading even when i apply brakes it takes few seconds to realize that I have slowed down. what could be the problem ?? please help i'm desperate

[RealDoubts]

@canobd2 no i don't know what codes i have sorry i think its the instument cluster i don't want to buy a new one if it's not it

[canobd2]

I do not think your ABS problem is related to your speedometer problem. Do you have oversize tires if so this could be your problem?

[enriquesford]

on my 97 f150 (4x4) the ABS light was always on until one day the light turned off, it didn't burn out because it still turns on once i turn the key (as every other light), but now my speedometer isn't marking the correct speed. what could it be?