I am having problems car going into sleep mode. Seems the throttle body 2 wire pigtail
is the problem. Can not find one. Although some say a Ford focus might be the answer.
Any thoughts...

Dante1

 

Check the Ford pigtail catalogue -
https://www.motorcraft.com/content/d...-Book-2016.pdf

 

wow. I just browsed that out of curiosity. So many pigtails and a lot of them so similar

 

I also looked at the Ford pigtail book.

A little overwhelming but a possibility.
Dante1

 

What is the matter with the connector? I could see a bad connector causing driveability problem or setting DTC codes, but I'm not seeing how it would prevent the car from entering sleep mode.

If just the lock is broken, can you secure the connector with a Tyrap or similar? Electrically that would be good as new, and in my over-inflated opinion is preferable to splicing in new wire terminals. Or if you can find a replacement connector, you can usually swap the existing terminals to the new body, with no need for splices.

If the connector body is damaged, you can even go without it and connect the terminals directly. The connector body is just a convenience to hold the terminals in the correct order and acts as a backup to keep them locked in place. Several times I've encountered damaged connectors for which no replacement was available. In those case, I've removed the damaged shell and just installed the wire terminals by themselves. Of course you must keep track which terminal goes where. Perfect? No. Adequate? Yep.

 

Hi,
I was not having problems with not going into sleep mode. I was having problems with the 2005 S 3.0 going into sleep mode.
After replacing the brake switch, the fuel pedal and now it has come to the Throttle
Body 2 wire pigtail connector.
I have owned a few Jags, all XJ6's, but this sleep mode was new to me 5 years ago.
The sleep mode happened two days ago in a car wash...lol
In Texas, where the highway speed is 80 mph and you are passing 18 wheelers, with one right behind then your S Jag goes into sleep mode. That is truly an experience.
especially if its the first time it is happening to you.
Thanks for advise I will pass it on...
Dante1

 

Just curious... What exactly do you mean by "sleep mode" ?

 

I'm officially confused. Sleep mode is a very specific term, describing how the various computer modules automatically power down about 30 minutes or so after the engine is turned off. When there's a problem with "sleep mode", it almost always refers to some module(s) remaining powered up and depleting the battery while parked.

But in your situation, are you saying the engine suddenly dies while driving? That's certainly a problem, but I wouldn't call it "sleep mode".

 

Thanks for your input...
Sleep mode is what the dealer has called it over years. But, the car almost dies, parkbrake fault readout ,no cruise control light comes on and car slows down to 10 mph.
Happened once with a bad battery but now they are saying that its the throttle Body pigtail connector.Which I can't find.
If I clear the codes then the car will start and run til I get to the garage.

Dante1

 

It's just that dealer's terminology - I've also never heard of it let alone by that name.

Very possibly not diagnosed properly in which case you're wasting your time.

You seem to be describing one of the limp home kind of things but you normally get an orange or red warning on the dash (and the pigtail would not be the cause). Don't you have any warning(s) on the dash?

 

To quote that great philosopher Kent Dorfman:



We are slowly peeling back layers of this onion. It would have been VERY helpful earlier to have mentioned these other faults appearing at the same time. The parking brake and cruise control faults are a known issue, so much so that we actually have a thread dedicated to some likely root causes. The guy who started that thread is a bona fide genius, by the way. I heard he smells nice, too, but I'm getting off track:

https://www.jaguarforums.com/forum/s...attery-193787/


Since we aren't really getting anywhere trying to resolve the TB connector issue, let's consider the other two faults. Since they appear at the same time, there is a high likelihood they are all from the same root cause. Read through that thread and you will see the battery itself is often the culprit, causing low prestart voltage. Even if the starter cranks just fine, if voltage dips below a certain level under the heavy load of the starter, you can get some spurious faults. It is perfectly normal for the voltage to dip to some extent with the starter engaged, but below a certain point things get weird.

You mentioned you previously had the same batch of faults and a new battery took care of it. How long ago was that?

Another possibility is your new battery is okay healthwise, and would pass any test, but may be partially discharged. This could be caused by a marginal charging system, or short frequent trips with high electrical loads (AC and lights, for example). You could also have a parasitic drain running the battery down overnight, but not bad enough to completely kill the battery.

That thread has several recommendations for troubleshooting. The one I strongly recommend is to charge the battery every night for a week or so and see if that keeps the fault at bay. I realize it's a pain to hook up the charger every evening and then disconnect it in the morning, but if the car now behaves itself when you begin the day with a fully charged battery, then you know low prestart voltage is the culprit. The next step would be to figure out why.

Back to that connector, I know you want to get it fixed. Just remember, if the individual contacts are all making good connections metal-to-metal, the plastic connector body is immaterial for now. Sure, you'd want to get it replaced eventually, but cracked/broken/missing plastic isn't going to be causing your fault if the connections are still good.