Ford Explorer Sport Trac: ABS Light On / WSS Signal I Can Not Explain?
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Date: 2020-08-05
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Comments and reviews: 10
Fred
Ok. I haven't finished this video yet but I gotta say that when you see a DC offset from a device that isn't supposed to generate DC, two areas to investigate are thermocouple effects and chemical effects. A little bit of salt in the wrong place can do it. Did you measure the DC resistance of each sensor? Did you check it's impedance? Did you measure if that ac waveform generated can stand a normal AC and DC load? Your scope won't provide a low enough impedance to check that. There are three other way-out sources of a mysterious DC offset. One is if you have a badly oxidized connection AND a lot of random AC (generally high-frequency RF) field nearby. The scope won't display the RF cuz the frequency is too high. But the oxidized connection will rectify the RF yielding a mysterious and variable DC voltage. OK. That was weird enough. Here's another: a malfunctioning electrolytic capacitor. I don't think wheel sensors have those. An even weirder one is if you are dealing with something radioactive that spits out a charged particle. They do make laboratory current sources out of Carbon-14, for instance. I doubt this is your problem. But seriously, you should compare the left and right sensors into a decent load resistor not just measure their open-circuit waveforms which is what a scope does.
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Ok. I haven't finished this video yet but I gotta say that when you see a DC offset from a device that isn't supposed to generate DC, two areas to investigate are thermocouple effects and chemical effects. A little bit of salt in the wrong place can do it. Did you measure the DC resistance of each sensor? Did you check it's impedance? Did you measure if that ac waveform generated can stand a normal AC and DC load? Your scope won't provide a low enough impedance to check that. There are three other way-out sources of a mysterious DC offset. One is if you have a badly oxidized connection AND a lot of random AC (generally high-frequency RF) field nearby. The scope won't display the RF cuz the frequency is too high. But the oxidized connection will rectify the RF yielding a mysterious and variable DC voltage. OK. That was weird enough. Here's another: a malfunctioning electrolytic capacitor. I don't think wheel sensors have those. An even weirder one is if you are dealing with something radioactive that spits out a charged particle. They do make laboratory current sources out of Carbon-14, for instance. I doubt this is your problem. But seriously, you should compare the left and right sensors into a decent load resistor not just measure their open-circuit waveforms which is what a scope does.
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ruben
greetings friend i'm from venezuela i say bad english i use google to talk to you. I have an explorer 2010 4. 0 v6. I have abs lights on, skidding, handbrake. the scanner code b1342 error or ecu error appears. The module was sent to be checked on a test bench and everything went well, I tested the direct positive 2 pins (1-32) and the direct ground (16) on the abs module cables as well as the positive one for the suiche. I also tested pins 12-13 of the 61 ohm given by the two module communication pins. I would like help with this friend please something else that I can review. here the situation is difficult to have experts. the 4 abs sensors are perfect the scanner allows me to see that they work perfect.
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greetings friend i'm from venezuela i say bad english i use google to talk to you. I have an explorer 2010 4. 0 v6. I have abs lights on, skidding, handbrake. the scanner code b1342 error or ecu error appears. The module was sent to be checked on a test bench and everything went well, I tested the direct positive 2 pins (1-32) and the direct ground (16) on the abs module cables as well as the positive one for the suiche. I also tested pins 12-13 of the 61 ohm given by the two module communication pins. I would like help with this friend please something else that I can review. here the situation is difficult to have experts. the 4 abs sensors are perfect the scanner allows me to see that they work perfect.
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jerstuube
Ive run into 3 times in the past month and have no idea why the ABS module isnt liking it? Sure its a little low but I thought it should eventually pick up. Interestingly all 3 bearing were the same manufacturer of low line bearing. Hopefully if u find the answer please share! Its baffling me. (And Im sure my boss would like a proper reason as to why its no good, other than its junk lol)
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Ive run into 3 times in the past month and have no idea why the ABS module isnt liking it? Sure its a little low but I thought it should eventually pick up. Interestingly all 3 bearing were the same manufacturer of low line bearing. Hopefully if u find the answer please share! Its baffling me. (And Im sure my boss would like a proper reason as to why its no good, other than its junk lol)
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Dick
Clean your file with a piece of copper pipe --- flaten one end of the pipe with a hammer, then you can drag and push the end of the copper pipe on the file. Let me know how it works for ya. I need to do it again on mine.
I am in Arizona retired USAF. I am coming back in May to the finger lakes for two weeks to see my brother. No I won; t brother you, time is money. Have a great day.
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Clean your file with a piece of copper pipe --- flaten one end of the pipe with a hammer, then you can drag and push the end of the copper pipe on the file. Let me know how it works for ya. I need to do it again on mine.
I am in Arizona retired USAF. I am coming back in May to the finger lakes for two weeks to see my brother. No I won; t brother you, time is money. Have a great day.
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Jason
I have a suburban that had about 750-900 milivolts on three wheels and one that put out about 300 mv and it was tripping my stabilitrac during acceleration I used a caliper and the air gap in the hub was within spec. I tried closing it up a smidge and Also tried a different abs sensor in the hub and still same result. So replaced the hub and it worked putting out the Correct voltage.
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I have a suburban that had about 750-900 milivolts on three wheels and one that put out about 300 mv and it was tripping my stabilitrac during acceleration I used a caliper and the air gap in the hub was within spec. I tried closing it up a smidge and Also tried a different abs sensor in the hub and still same result. So replaced the hub and it worked putting out the Correct voltage.
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Garth
Regarding Moog and being Chinese made parts. Guess who else is made in China? OEM parts are. GM, ACDelco and all of them. Parts are Chinese. Even though Moog is associated with a large mother corporation, they still are good parts as any other. Just my opinionm having much experience with trying to get USA OEM when I can and finding the OEM part boxes labeled China.
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Regarding Moog and being Chinese made parts. Guess who else is made in China? OEM parts are. GM, ACDelco and all of them. Parts are Chinese. Even though Moog is associated with a large mother corporation, they still are good parts as any other. Just my opinionm having much experience with trying to get USA OEM when I can and finding the OEM part boxes labeled China.
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KENHUNTSMAN100
The reason I suspect the module is not able to read this is the circuit needs to raise 0. 6v above and below zero volts to switch the transistors on and off. The DC voltage offset could prevent this from happening. Capacitors are used inside the module to ensure this toggles around the zero volt line. It's great how YouTube can be used like a video IATN.
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The reason I suspect the module is not able to read this is the circuit needs to raise 0. 6v above and below zero volts to switch the transistors on and off. The DC voltage offset could prevent this from happening. Capacitors are used inside the module to ensure this toggles around the zero volt line. It's great how YouTube can be used like a video IATN.
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Wrench97
Nice video, I just had a Dodge Dakota with a dead aftermarket sensor/hub on it. Ohm'd out ok and had a voltage reading on the scope when spinning the tire, it also has a static volt reading even after removing the hub/sensor assembly from the truck?
It has to be some kind of galvanic action from all salt brine on the roads the last couple weeks.
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Nice video, I just had a Dodge Dakota with a dead aftermarket sensor/hub on it. Ohm'd out ok and had a voltage reading on the scope when spinning the tire, it also has a static volt reading even after removing the hub/sensor assembly from the truck?
It has to be some kind of galvanic action from all salt brine on the roads the last couple weeks.
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Shawn
What if you already replaced one brand new hub up front and the same abs issue is happening? Abs light had been on for a while, drivers speed sensor wire was cut for atleast 2 years, 2003 ford explorer sport trac xlt finally the bearings started to roar. Replaced drivers hub yesterday.
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What if you already replaced one brand new hub up front and the same abs issue is happening? Abs light had been on for a while, drivers speed sensor wire was cut for atleast 2 years, 2003 ford explorer sport trac xlt finally the bearings started to roar. Replaced drivers hub yesterday.
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olvera
Hello Erick I had the same problem with a Honda Civic check all with pico and omhs as well as the harness changed the hub bering for an (aftermarket that the customer brought as well as the sensor) and no change. my solution was to replace hub bering sensor front honda dealer.
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Hello Erick I had the same problem with a Honda Civic check all with pico and omhs as well as the harness changed the hub bering for an (aftermarket that the customer brought as well as the sensor) and no change. my solution was to replace hub bering sensor front honda dealer.
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