What marque does your friend recommend that does not need maintenance or repair work? In my experience, Jaguars are no more, nor less, reliable that other luxury vehicles.

Many of the jokes and 'quips' heard are usually referring to vehicles built during the dark days of British Leyland ownership in the 1970s. When I hear such comments, I always ask what model the person owned, which usually gets a response that it was a friend of a friend's third cousin, or some such nonsense.

 

The friend would recommend one of 3 - the "L", a taxi or ubber - of course she lives in Chicago and does not own a car. I have heard many of these kind of comments in the past about other marquees that I have owned but never the buy 2 comment.

Aside from that - can you answer any of my questions regarding the CCM unit? I think my last questions may have been to far down the thread for anyone to notice. I'll try posting the questions under a new title and see if it draws any useful response.

 

If you perform a search, the DCCV and other components have been discussed in many threads.

There is even a vendor who can repair the control unit and return it to you within a few days. http://jaguarclimatecontrol.com/diagnose

 

Yeah, found the link and contacted him 2 days ago - no response as of yet. I've read the threads but have not been able to get info on how a "fried" CCM acts. Mine will not power on but does back light the red/blue buttons when the headlights are engaged. Rear window defroster will not turn on either. Any other fuse besides #32 in the engine compartment to check?

 

Here is a link to the 2005MY S-Type electrical guide:

http://www.jagrepair.com/images/Auto...cal-2005on.pdf

 

They act differently depending on what blew. Some won't even repair easily (unless you can diagnose ICs).

 

I read a bunch of the threads and searched ebay and the like. It looks like there are a number of people who claim that they can repair the unit but Jeff at Jaguarclimatecontrol.com seems to be the most knowledgeable and probably the priciest although he will look at the units for free and then discuss the options. He also claims to provide an update that will keep it from overloading in the future should the new DCCV fail.

 

Based on the final diagnosis and resulting repair(s), kindly post the steps and results for future reference by other forum members.

 

I think he adds resettable thermal fuses.

 

The guy who runs this business does it on the side. He may have had something urgent come up, such as a family crisis or who knows what. Or you may not have read all of this first before emailing him

Contact Us & Pricing - JaguarClimateControl.com

To confirm what JagV8 said, that page also mentions his modules are "upgraded w/ fault-protection circuitry".

 

After filling out the form on his website and waiting the specified time for a reply I went back to the site and found an email address to contact him should a response not be received. It seems that the form never registered on his end and he responded immediately to my inquiry. Pulling the 2nd unit today and sending both to Jeff for inspection later today. Thanks again for all the response. I will post the results and steps taken in a concise manner when the problem is resolved for future forum members.

 

A quick update:
I sent both CCM units to Jeff @ Jaguar Climate Control. He checked them out and could not find any problems. He offered to do the upgrade on one unit and purchase the 2nd unit bringing my investment down to a minimum. He suggested that I do a continuity test on the system. I went back and looked things over and discovered that when I was originally checking the system I must not have properly seated fuse F14 in the passenger compartment fuse box B [climate control system, two stage adaptive damping control module] - yes I am kicking myself over this one!

I am going to take Jeff up on his offer as the upgrade makes a lot of sense to me and I really will not need a 2nd unit with the upgraded unit. Hopefully this will all work out and in a couple of days I will be able to report back a successful job completed,

 

Well sometimes things happen.
Sorry to hear about the added expense. But lesson learned.
.
.
.

 

Thanks for the update. Don't beat yourself up over this. In fact, kudos to you for taking the time to go back and recheck earlier work when you realized something just wasn't right. I deal with headscratchers like this on a fairly regular basis in my work (aviation electronics). It can be tough to mentally shift gears and revisit earlier work and assumptions, because that is often where the fault lies. I've got a coworker who is like a dog chasing squirrels in these situations, always itching to dig deeper and tear the next thing apart. Our boss is nearly to the point of approving my request for a tranquilizer gun for these cases.

Thanks again for the update. So many threads never get wrapped up in forums like this.

 

I got the CCM back from Jeff at Jaguar Climate Controls earlier today and installed the upgraded unit. Now that I have properly seated fuse #14 it appears that I have full power to the unit and I can turn it off or power up. It is still blowing hot air when the A/C is on from both sides. I can change the mode and get the same hot air on the floor or the defroster

I have been following Kewpie's problems with his R and it seems to be a similar problem.

I did check the compressor when I was under the unit and did not see any leaks. When the A/C is turned on I can hear it engage. I checked the low side A/C pipe behind the left front tire and it is cold to the touch but not frosted after running the car with the A/C on full [low] for 5 miles.

After I installed the new DCCV I disassembled the suspected failed unit and found fluid where it appeared it should not be so it seems to make sense that the unit was defective.

Any suggestions?

 

It may be best to take the vehicle to an air conditioning specialist with the equipment to add the correct level of refrigerant by weight.

 

Yes, +1

Gauges need to be hooked up to check both low and high pressure sides vs. ambient temperature.

 

Update!
After the new DCCV, cabin air filter, ambient temp sensor, evac sensor and check of the CCM and upgrade I took the 4.2 to my local a/c shop within walking distance. He checked the charge and it was a bit low. Still no cold air. He poked around and checked the voltage to the DCCV and it was at proper voltage. He then clamped off the hoses at the DCCV and surprise - cold air. It seems that the motocraft DCCV that I replaced was defective. The parts supplier is going to refund the purchase so for a couple of hundred in labor on a 90 degree day it should be fixed. The idea to clamp the hose came from the mechanics shop/reference manual. Probably the first test one should do.

 

Glad to hear you got it sorted out. I hope I didn't steer you wrong in post #10. I had suggested checking to see if the heater hoses were hot. I'm starting to think this is just too hard to tell, due to lots of ambient heat under the hood. In the future, I will take your recommendation and suggest clamping off the heater hose instead.

I think I will also suggest putting a thermometer in the dash duct. If the air is close to ambient temperature, that would point to no cooling but no heating, either. If warmer than ambient, that would point to heat being added via the heater core.

 

Further update!
After the charge [had to wait a day as his a/c machine died when he attempted my charge] and the clamping off of the heater hose and the independent's diagnosis that the replacement DCCV was defective they installed a new DCCV. He cleaned up the contact points, checked that it was getting 12V and buttoned it back up. It blew cool air until the car warmed up then started blowing hot air again. They kept it over the weekend, got a better scanner but could not read deep codes. At this point they gave up. Good news - only charged me for the fill. It goes to my independent British shop next.