This looks like it could be fun...anyone know what connects to this connector, to the right side of the console behind the trim panel on an 1989? Looks like a ribbon cable might connect to it on the frontside...


Pete

 

Hi Pete,

That connector is for the Climate Control ECU. The photo album at the link below shows some additional views:

Welcome to Jag-lovers - Members Photo Viewing Page

Off the top of my head, I think the XJ40s did have a diagnostic connector, maybe in the trunk/boot? But it is a proprietary Jaguar connector that only works with dealer diagnostic equipment. I don't know about the '89, but our '93 is OBD I. The saloons weren't standardized to OBDII compliance until the X300.

I'll be curious if any of the other members recalls any additional info about the XJ40 diagnostic connector and system.

Cheers,

Don

 

Don - on my 94, the connector is under the battery tray (in the /trunkboot)

Larry

ps waiting to see if your question to Nick re: using PDU software on a laptop gleans any result before downloading those disks ;-)

 

So I got into this a bit yesterday...Don, thanks for your input as always... after pouring through some Delanaire docs. Sounds like it basically interfaces with the JDS Jag Diagnostic System for troubleshooting. Is there a listing of what all of these inputs/outputs are, or what their thresholds should be?


The JDS system has me curious as well....do these systems ever pop up on ebay or on the market...or has anyone worked on an emulator for a PC?


Pete

 

THANK YOU THANK YOU THANK YOU!

That large connector is the wiring to the Climate Control Module (CCM) Computer. Those are the wires for the rotary flaps, blower motors, vacuum solenoids, temperature sensors, solar sensor, and feedback potentiometers. I remember reading somewhere that the pins are exposed for diagnostics purposes like feedback potentiometer voltage checks when the system is malfunctioning. I always figured a technician would use a DVOM to probe those different pins and check for malfunctions that way...

Now that you've posted the picture, however, it appears that not only can you probe those pins with a DVOM, but you can also connect a Jaguar PDU (Portable Diagnostic Unit) to the Climate Control Module directly, and perform Guided Diagnostics Procedures with the help of the PDU.

My PDU stuff came with a couple of cables I couldn't identify. I think you've helped me solve that... According to my PDU manual, this is the "A/C interface adapter" for the Mklll and MkiV Climate Control systems.



Unless I'm seeing things, I believe I have the very cable that allows the PDU to interface with XJ40 Climate Control Modules. The large multi-pin connector on the end of the cable connects to the VIA unit, a big module that interfaces the car wiring to the PDU...

Intersting Stuff! I don't think the PDU was around in 1989, and therefore, I think the WDS also had this capability to connect to the car's harnesses through connectors like this. My Jag mechanic who worked at a Jag dealer for 20 years told me the WDS was called the "harness machine" because no matter what the issue was, it always told the technician to replace the whole harness.. Haha. No wonder why they needed a replacement.

Thanks,
Nick

 

This is the "Teves Interface adapter" for testing the ABS Control Module on XJS cars.

 

The "Relay Tester Cable" which plugs into relay bases to check for proper signals at relay connectors.



And the same thing, but for "Microrelays"

 

And the "Marelli Interface adapter" for testing the fuel injection system on XJS and XJ12 cars.

 

Nick,

That is amazing information and significantly moreso with your accompanying photos! You've just made a lot of XJ40 owners very jealous!

And thanks also to Pete, whose inquiring mind prompted this discussion!

Cheers,

Don

 

I came a cros this thread and I thought to show you guys a little bit more of the PDU. I connected the PDU to the climate control and tried to check some things. I was a bit short in time so I couldn't finish and wasn't able to do all the tests but maybe an other time but for now I have made some pictures for you guys.

Now I have to find the correct probe to do more testing and have to try an older CD version to see if that make any different. It would be nice to see the live values of the sensors.

 

But the reason I found this thread was because I was looking where this connector is used for. I do know this type as a diagnostic connector for Rover MEMS Engine management but haven't seen in in a Jaguar before (and I know it is not the diagnostic socket of the Jaguar Engine management).

Anybody?

 

Is that the Infra-Red Security System connector??

bob

 

Hi Gijzzy,

Thank you for uploading the photos of the PDU in action - very interesting.

Regarding that electrical connector, I like Bob's theory that it's related to a security system that may not be fitted. It's not for a sunroof motor (that also isn't fitted). What's the year and model of the Jag?

Cheers,

Don

 

I think it isn't because the infra red receiver is in place and has got an other connector.

The car has a VIN ending with 6602** so that would make him a XJ40 MY 1992.

Today I was able to see all the sensors, and have made more pictures, will post them later.

 

After I loaded older software to the PDU I was able to get the datalogger for the climate control to work .

 

And some pictures with the PDU connected to the ECM: