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  #28  
Old 09-05-2013
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Originally Posted by Yom View Post
for the others with issues:

-ESP light will turn on after a while of driving if your steering wheel is not centered properly. This can technically only be centered if you have an AEV Procal or a dealer scan tool.

-Front wheel speed sensors cannot be contaminated by mud or dirt. If they do get contaminated, the wheel bearings will also need to be replaced as there will be mud and dirt inside the sealed wheel bearing assembly. Only the rears can be affected by mud/dirt ingress.

-ESP activation while under braking when turning left or right van be caused by worn axle ball joints, the sensation is usually the brake pedal pulsating and braking effect only occurring on the wheel opposite to the direction of your turn - I have had this event at speeds as low as 20km/hr.

-No swaybars or extra body roll from a crap lift can and will cause very early ESP activation when cornering, the effects of this will be felt from whole vehicle getting brake application and power being cut.
How does the lack of sway bars activate esp when cornering?? are there g force sensors in the body???
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Old 09-05-2013
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Yes, there are g-force sensors in the body, also used to deploy the airbags. Also is able to sense based on speed and steering wheel angle what the sideways gforce should be and if the vehicle slides this will reduce the gforce and activate the ESC system decreasing power and applying brakes to the (I think) inner rear wheel mostly.

Sladey - any error codes coming up? I would take a stab at a wheel speed sensor error from either mud and crap in the rear wheels stuffing up the sensor reading or an issue with the cabling to one of the sensors
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  #30  
Old 10-05-2013
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Originally Posted by SeaComms View Post
Yes, there are g-force sensors in the body, also used to deploy the airbags. Also is able to sense based on speed and steering wheel angle what the sideways gforce should be and if the vehicle slides this will reduce the gforce and activate the ESC system decreasing power and applying brakes to the (I think) inner rear wheel mostly.

Sladey - any error codes coming up? I would take a stab at a wheel speed sensor error from either mud and crap in the rear wheels stuffing up the sensor reading or an issue with the cabling to one of the sensors
rear abs codes showing up on the diagnostic

i was getting some front end work done at dbor and they took a real quick look at this issue as well, bill is leaning towards abs lines being damaged as part one of the issue, from being pulled this way or that after the last mob of useless nitwits (my term, not his)*cough* poly4x4 *cough*, did the lift but did not loosen off everything, allowing things to be pulled almost to breaking point under full droop.

Not that the droop is that impressive because they put oem length shocks on a 3-4 inch lift, but i digress, i'm jacking it up on the weekend and going to get all the mud still hiding in and around everything cleared away, see what i can see. at least if i cant fix it and it goes back to dbor it will be clean, im sure they were getting tired of sweeping dirt off the floor damned bog holes
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Last edited by sladey; 10-05-2013 at 03:44 AM.
  #31  
Old 10-05-2013
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Unplug your rear sensors & check the resistance, if they are open circuit you will need a new sensor,sensors are only $35 new from your jeep dealer & are easy to replace
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  #32  
Old 30-03-2014
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Default ABS and ESP error

similar line...

I have to replace a FL wheel speed sensor on JK Rubi. I went to local dealer, told him what I wanted and he ordered it. When it arrived, the cable was too short and hence part didn't fit. Queried this with the parts dude next time I was there, he says that side specific WSS aren't made anymore, and one part fits both sides?

Is this correct? If it is, how then do you fit the passenger sensor if the cable is too sort (by a lot - 20-30cm)?

Dave
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  #33  
Old 31-03-2014
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Quote:
Originally Posted by TJ Dave View Post
similar line...

I have to replace a FL wheel speed sensor on JK Rubi. I went to local dealer, told him what I wanted and he ordered it. When it arrived, the cable was too short and hence part didn't fit. Queried this with the parts dude next time I was there, he says that side specific WSS aren't made anymore, and one part fits both sides?

Is this correct? If it is, how then do you fit the passenger sensor if the cable is too sort (by a lot - 20-30cm)?

Dave

yea that's a bit odd, he was not talking about the rears was he? they are the same as they have no long cable to worry about

with the fronts it seems silly that they made them a soldered unit rather than being able to detach the loom at the end of the WPS, silly

thanks though coz in a totally vein moment I worked out by typing "front wheel position sensor jeep jk" into google that my video on the subject is first in the search results (sh!t as it is), only its wrong because I'm talking about the rears, derp derp
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Last edited by sladey; 31-03-2014 at 04:21 AM.
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  #34  
Old 30-05-2014
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Hi all,

I recently had all four lights come on after applying the brakes firmly to avoid another vehical. The 4WD Service light went out about 5 seconds later but the others remained. The Jeep seemed to run OK for the remainder of the trip. I turned the ignition off and then back on and the lights were gone. This now seemes to happen every time I apply the brakes with some force.

I scanned it to see if any codes came up and got these
U0414-Invalid Data Received From 4WD Clutch Control Module
U0402-Invalid Data Received From TCM
C2111-Sensor Supply Voltage Circuit Low
C140A-Transfer Case Motor Performance

All forums I've read relating to these lights suggest wheel alignment issues or faulty/dirty wheel sensors. To me, the codes don't seem to relate to either these.

I will change the sensors on the weekend and the have a wheel alignment done after that if the sensors don't do the trick. Will keep you posted on the progress.

If anyone can give me some advice, i would greatly appriciate it.

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2008 KK Cherokee 2.8ltr
2.5" CRD Stu Lift Kit
GDE Flash Tune
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