ABS issue when turning Fixed
Any of you guys have the issue where when your taking off or moving really slow and have the wheels cut, your hearing your abs kick in and or a noise that sounds like a bad axle?? I had this issue and wasn’t getting any dash lights so I was thinking something was binding when I had the wheels cut and making this noise. Then the other day my abs light, service stabilitrac, and service brake assist light came on only for a few minutes then went off. After some digging I found some stuff about the abs harnesses being bad about giving this issue on the 8th gens. Save yourself some cash and do like I did and clean your abs connector and make sure it’s got enough slack to not pull somewhat apart when you turn like mine was doing. About an hour job removing the wheels and cleaning these and inspecting for bad connections can save you some money and a headache. Not always going to be the fix I know but definitely worth looking at before you take it somewhere or start buying parts you don’t need
I actually made a post on this the other day. Here is a copy and paste from there.
Hey everyone. I was trying to help someone on here the other day with these codes so I thought I would just do some explaining so I could just link them to the topic which actually worked out pretty well since a vehicle came in and I was able to make a quick video on one of the issues that can cause this.
C0035 - Left front wheel speed sensor circuit.
C0040 - Right front wheel speed sensor circuit.
With these 2 codes you're more than likely going to find an open wire to the hub assembly speed sensor.
First before we get into testing at all just do a good visual inspection of the hub and harness. Some times the connector from the hub harness becomes disconnected from the retainer and the harness will rub on the axle causing wiring damage where the hub assembly has to be replaced. I have seen this several times.
But mostly what I find is the harness to the hub wheel speed harness is open requiring you to replace the harness.
The way you test this is by testing the resistance across the 2 terminals of the harness (the harness to car side, not the harness to hub side)
You will find the resistance is between 850 and 1350. While you have your meter connected, manipulate/wiggle the wiring harness and see if you can get it to show infinite resistance or OL. If it does replace the harness. You can use but splices, but I recommend soldering.
If the harness side doesn't show OL, Go to the hub harness connector and using the meter test across both terminals. Spin the wheel and with the meter on the mV AC voltage setting you should see at least 100 mV AC. If it is not greater than that replace the Hub.
Hope this helps someone and makes it a little easier to understand and diagnose. If you have any other questions you can leave them here or message me. I will be happy to try to help you.
Here is the video I made of replacing the harness.
Thanks for your reply..
Many times it could be the wheel bearings (which the above mentioned harness goes through) and or could be just the harness and wiring damaged or chaffing as mentioned above. If the turn to the right then the left wheel, as it seems to always be the opposite wheel bearing.
I got my 2004 about 4 years ago for a song. It had problems GALORE, not the least of which was constant ABS issues.
The abs system monitors wheel speed to determine if it's losing traction. When it works, it works, however there are many things that can throw this system awry.
My problems with ABS didn't go away until I had replaced:
- All 4 wheel bearings (including the abs sensors)
- Both CV axles
- Control arms
- ABS sensor wiring harnesses at all 4 corners (these are common failure points)
- Steering rack
- And believe it or not - all engine mounts, including that big oil-filled one
Movement, backlash, "play" and just general sloppy control of the relative motion between the engine/trans + drive axles + wheel bearings can screw up the abs system, and all of these components need to be in good shape for it to work correctly. This is assuming your abs control box and brakes are good otherwise.
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