I think I would bite the bullet and have the dealer scan the vehicle. It's the last thing I would normally suggest, but in your case, it's probably money well spent.

Guessing is expensive (ABS module), or time consuming (sensor change). And they do not carry a high probability of first time success.

Just to show how bad sizes can be, the Goodyear on the left is bias but works out to 295/50/15 and the M/T on the right is a 275/50/15 and is actually taller than the 295.

http://forums.pelicanparts.com/uploa...1635890076.JPG

To the OP, can you please update when you have resolved the issue?

Yes please, and hit us up with any questions . I would 1) verify the abs/vsc module is awake, and functioning, and 2). scan and clear ( write them down ) every module in the vehicle, then see where you stand .
I bet we can fix this one long distance . Id love to see some fault codes somewhere .
Nissan is weird like that

First thing that comes to mind that is common to the functions behind those three MILs is wheel speed detection. If you can find a way to test whether the rest of the bus is getting signals from the wheel speed sensors you'd learn a lot.

Yup, I absolutely will update accordingly. I won’t get back on it until Sunday.

Ok, my first question is Second, how do I verify the abs/vsc is awake?

I did the “ignition on, press door switch 10 or enter self test” and that completed normally.

Full disclosure, while I’ve wrenched on cars since the late ‘70s, I’ve barely scratched the surface on OBDII vehicles. She made an appointment with her regular shop for Monday. If I don’t find anything before then, I’ll let them take a look, but only to diagnose. If I feel I can do the repair, I’ll dive in.

With all I’ve read, I agree it’s prob a wheel speed sensor.

Regarding the different tires front to rear. I agree that it can cause issues, but they’ve been like that for at least 2 years and this problem just began. I doubt it’s that, and if she keeps the truck, that’ll be addressed later.

On Nissan's you test each wheel sensor with an Ohm meter, each should be around 7. Less then 7 and you have a bad a sensor. The Xterra might be a difgferent reading so you may want to look it up, but that's the reading on Pathfinders. You check it at the connector on the ABS module, or check it at each wheel at the plug. Checking at the wheel is good because you can rotate the plug and see if the resistance changes between 7 and and around 6.

I believe the pathfinder and xterra hub are the same with an both have integrated wheel speed sensor.

It's my neighbors Pathfinder that I keep working on, I would say it's a terrible car however it has almost 300k on it so I guess a diff rebuild and some ABS issues, two cats, not really a big deal. Cutting those cats out was a nightmare, I don't know how those thieves do it so quick.

How do I “scan each module”?

Is that from the single OBDII port and my scanner can select different modules from it?

Or are you saying there are other ports my scanner can connect to?

I’m headed to her place later today and jumping in a bit.

TIA! SmileWavy

Didn't really have much time to tinker yesterday, she dropped it off at her regular shop this morning.

Just spoke with the shop and they say it's the steering angle sensor and the rr wheel speed sensor. However, they say something in the axle is causing the rear sensor to not function. They'd need to do further disassembly to determine the cause.

Do I need a laptop and appropriate software to calibrate the steering sensor?

Rear axel?

I had this happen with our Nissan Quest and it was the cam position sensor. It was easy to replace, took all of about 15 minutes.

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Shop called…
RR sensor is ok, it’s the ring that it reads is goofy.
The steering angle sensor is also faulty.

They’re doing the whole repair.

Cool.

She has a nice truck that I hope will continue to serve her well.

Beats a car payment!

I have had great luck with mine, I bought it slightly used in 2008 with just 10k miles on it. Been my daily ever since and it has never left me stranded or needed any sort of major repair.

So, they have to pull the rear axle, and either clean , or replace the rear reluctor. eeeeewwwww. I bet it has a bad wheel bearing, or diff bearings, and they find metal particulate in there, either clinging to the reluctor, or the magnetic wheel speed sensor .
At least they have it figured out !
Was there any unusual noise coming from the rear axle ?

None that I could detect.

In my neck of the woods, there would be a dead field mouse wrapped around the reluctor. ;)

I'm shaking my head a little at the SAS and wheel sensor (or, well- reluctor) going south at the same time, but who knows. Why even worry. Sometimes the greater part of valor is knowing when to punt.

It was the diff bearings on the pathfinder I worked on. Thank goodness for Google, tons of good threads on repairing the Nissan diff. The metal had also collected on the diff sensors as well.