I had the dreaded "AC blows hot air " desase few weeks back ..I got DCCV replaced and the RCCM repaired by Mudule Master , Idaho. I typically keep my driver vents closed...so cool air did come out of the AC on Passenegr side ..I thought I was done ..right ...but my wife she drove the car other day open the Driver vents hot air is still coming.!! ..If I keep my temp hi ( no AC ) on driver side and low ( Hi AC) on Passenger it actually works okay with slightly warm air out of Driver side..but need to get it done right...Any thoughts!!

 

About all you can do are the usual checks that the DCCV is good, the RCCM is good, the sensors, wiring etc until you find what's bad. Don't assume anything recently fixed is actually working.

 

This information is for a 2000 S-Type 3.0 and yours is a 2005 4.0 so this information is a little different. However, the link to Jaguar Climate Control will help you in your troubleshooting process and a DIY Diagnose It Yourself procedure.

Link: JagRepair.com - Jaguar Repair Information Resource

I do not have a oneline for MY 2005 but this MY 2004 might help

Link: http://www.jagrepair.com/images/Auto...x2062004en.pdf

I hope this helps.

 

trashdee, ditto to jagv8, return the DCCM to Module Masterbater for a second look.

 

I went to Jaguar Climate Control site ...and followed instructions to check DCCV/RCCM .....did test procedure B...Had to buy a multi meter..using for first time ...used IR thermometer gun for temps.

but here are the results.

Engine ON ..A/C on ...temps on LO ( outside temp 88 F)

i. Temp Driver 130 F ...Center 120 F ....Pass 77 F

Step ii ...FC 4 pin9 Voltage @ 58 ( 2000 m V setting on multi meter)
. FC 4 pin 10 Voltage @ 256 ( " " )

Resistance Pin9 @ 110 ohms ( 2000 omega setting on multi meter )
. Pin10 @ 555 ohms ( " " )

skip iii ( no clamp-on ammeter )

iv. Current Pin 9 @ 8.1 amps ( 200 m A seeting on Multi meter )
. Pin 10 @ 39.4 amps ( 200 m A setting on Multi meter )

These values for voltage , resistance and amps needs to adjusted based on Multi meter settings I suppose.

Have not done sensor measurements ( step v) yet ..

Any thoughts on these numbers...I have not sent out the RCCM back to Module Masters yet ...but will do after some feedback .

 

When on mV or mA ranges the readings are mV and mA so e.g. 58mV (which is tiny).

 

I would recommend that you give this information to - JaguarClimateControl.com and see how they interpret your information. They are in a better position to say what is right or wrong.