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-   -   CPU reset after ABS lead change (https://www.chryslerforum.com/forum/chrysler-voyager-town-country-21/cpu-reset-after-abs-lead-change-20959/)

Sportcoupe Dec 4, 2013 08:41 AM

CPU reset after ABS lead change
 
I have replaced the passenger side ABS cable and sensor. I had expected this to cure the problem of the warning light in the dash being on, as diagnostics revealed this cable was faulty.
Do I need to somehow reset the CPU so it knows there's a new cable there or is that a job for someone with a diagostic computer?

Many thanks

Raptor 07 Dec 4, 2013 03:25 PM

Disconnect the negative battery cable for 2-3 minutes. If that doesn't work you may need a scanner.

mrfixit Dec 4, 2013 08:21 PM


Originally Posted by Sportcoupe (Post 75376)
I have replaced the passenger side ABS cable and sensor. I had expected this to cure the problem of the warning light in the dash being on, as diagnostics revealed this cable was faulty.
Do I need to somehow reset the CPU so it knows there's a new cable there or is that a job for someone with a diagostic computer?

Many thanks

Disconnect one battery cable and touch it to the other one for about 10 seconds and it will reset everything.

Sportcoupe Dec 5, 2013 01:51 AM

Doing the battery disconnects didn't fix it, I guess i'll have to go back to the diagnostics man.

tfb Dec 5, 2013 02:05 AM

If the diagnostics where reporting a failure of one wheel sensor it doesn't necessarily mean that it is the sensor is faulty. It could be the wiring from the sensor to the ABS unit, the ABS unit itself, the alignment of the sensor or the reuctor rings on the hub.

You have to look at all the possible causes of why the ABS unit believes it is not getting a good strong signal from that wheel that is consistent with the signals from the other wheels.

Regards
Richard

mrfixit Dec 5, 2013 05:15 AM

Be sure none of the teeth are broken and nothing is lodged between them. this will give a bad signal.

Leedsman Dec 6, 2013 07:04 AM

If it's any relevance, some ercos on my Jag. could only be dealer-erased. Maybe that's why if the braking system is involved?

Leedsman.

tfb Dec 6, 2013 12:36 PM

abs sensor faults on the chrysler's will self clear when the fault is rectified. Tends to be SRS faults that need to be manually cleared, but each make has it's own little foibles.

Regards
Ricahrd


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