Quote:
Originally Posted by Wgosma
Lots to deal with, a couple of thoughts to consider-
1) is the car's battery in good condition - as you know these cars can perform in odd ways when the battery is sub-par.
2) This may sound odd but I had it happen: the varments (rats I think) got to chewing on my electrical wires- I was getting a slew of odd codes quite randomly, after many attempts to solve this by resetting codes the car ended up with Mr. Mechanic....who found an intermittently shorted ground wire amongst a cable that had been munched on by the little intruders. Likely not your cause but food for thought.
Good Luck/Bill
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It seems like it would be a lot to deal with here, but everything seems to be revolving around the DSC / ABS unit.
I think this because of the following
- ABS would fault if it doesn't know wheel speeds, explaining the first 3 codes.
- The four wheel speed sensors would all contribute to their individual codes, and the 4th code listed, which means it just can't determine vehicle speed.
- The second transmission code is just saying "Welp, the DSC isn't telling me the speed so idk wtf is going on"
- I think the first transmission code might be an expected pulse or signal fault from the DSC.
To address the two items you brought up...
Yes, I replaced the battery in / around January of this year. The battery I purchased was whatever the size is that's a step up from the original battery size. It still fit like a glove and I registered the battery at the correct Ah and have had no issues since then. Battery voltage is nominal when ignition is "on" as well as cranking and driving. I would expect to see a low battery voltage or high battery voltage.
Don't have many vermin around here, but I can't rule that out either. I would assume that, there may be one CANBUS wire that could be damaged. That was the reasoning behind me pulling the DSC connector completely to see if the behavior changed, and it did.
If it is some sort of grounded wire in the bundle or a single damaged wire, I'll report that back here.... when it's winter time. Right now it's a solid 105F outside in HTX and I'd rather die than spend hours troubleshooting it. That was part of the reason I wanted to reach out and see if anyone could provide insight of "yep, that exactly XYZ thing!"
But, given my own google-fu, I haven't come across a complete loss of wheel speeds like I mentioned here, so it may not be such an easy task.
Thanks for your help though - I'll see if I cant find an expected pin-out of the DSC unit and trace a few things back.... or go the lazy route and spend ~300 on an ABS/DSC unit off ebay
