I fixed my blower not working problem from info from BRUTAL. Thanks!!! (2004 XJ8 or X350 models)

1. Determine first if it is your blower (fan) that is bad, or its Control Module. Under the glove box is a cover. It is held up by two plastic fasterners. Pull out the smaller center part and the fastener will come out and the cover will drop down. At the fan is a plug with two large wires. Hook up a test light to the wires. Turn on the Climate Control and the test light should light up. If not then keep one end of the test light hooked up to the white wire (POS) and ground the other end of the test light. If it now lights up; then the fan's Control Module may be bad. You can ground the dark wire and if the fan runs then it is okay.

2. Near the fan, there is another plug with large wires. Hook your test light up to the wires and with the Climate Control on; the test light should light up. If it does then the problem is the Control Module. If it doesn't light; check the fuses again.

3. The Control Module is a replacement for the original. The new part has longer cooling fins. The part number is C2C39577. You will need to remove the glove box to replace the Control Module.

4. REMOVING THE GLOVE BOX:
You will need a #2 Phillips head screw driver, a T30 Torx driver and an 8mm socket or wrench.

NOTE: YOU WILL NOT NEED TO UNPLUG ANYTHING. THE GLOVE BOX WILL DROP TO THE FLOOR WITH ALL PLUGS ATTACHED!

NOTE: THERE IS A SMALL PHILLIPS HEAD SCREW RIGHT BY THE TWO BOLTS THAT HOLD THE BOTTOM OF THE GLOVE BOX ON THE DRIVER'S SIDE. THIS IS HARD TO SEE AND CAN DRIVE YOU NUTS IF YOU DIDN'T KNOW THAT IT IS THERE!

INCLUDED HERE ARE THE SHOP MANUAL INSTRUCTIONS. REMEMBER THAT THIS IS FOR TOTALLY REMOVING THE GLOVE BOX FROM THE CAR. DON'T UNPLUG ANYTHING!

5. Once the glove box is out of the way you can see the Control Module on top of the duct. Two Phillips head screws hold it in place. You can remove the Module without unplugging it. NOTE WHICH WAY IT IS TURNED. IT ONLY FITS ONE WAY. You will need to put the new Control Module in place before plugging in the harness. Screw it down and plug it in. Test the system and then put the glove box back together in reverse order.

https://www.jaguarforums.com/forum/a...1&d=1319142544

https://www.jaguarforums.com/forum/a...1&d=1319142544

https://www.jaguarforums.com/forum/a...1&d=1319142544

https://www.jaguarforums.com/forum/a...1&d=1319142544

https://www.jaguarforums.com/forum/a...1&d=1319142544

https://www.jaguarforums.com/forum/a...1&d=1319142544

https://www.jaguarforums.com/forum/a...1&d=1319142544

 

Hi I have a none working blower fan too: Not sure I am following the logic above.

Currently, I have voltage (about 10 Volts) to the fan black connector - measured across the black and white wires. I also have 12 volt s across the black and white wire at the white connector (I assume the control module input). Does that indicate the module is dead or the fan is bad? I changed the speed of the fan and there was no voltage change at the fan connecter - steady 10 volts.

Thanks in advance for any insight, want to make sure I order the right part!

 

Remember that the White wire is the positive. Try grounding the black wire at the fan plug (the black wire is controled by the Blower Control Module). If the fan now runs then the BCM is probably bad. The White wire at the fan should have the same voltage (White wire at plug and ground from chassis) as the White wire at the nearby plug that also has heavy White and Black wires.

These instructions are for the XJ8's starting with 2004. They may be correct for other models, but I haven't looked into that.

 

Thanks for the clarification - I will check tonight (the car is a 04 XJR)

 

Big thanks to Brutal and Glendoramike for all the info posted, I removed glovebox,avoided all booby traps ,replaced Blower module today on my 2003 xjr ,no probs. New module OE part C2C39577 with larger fins from David Manners Ltd £130 + DELIVERY.

 

Glendoramike, thanks a whole lot, My a/c broke down a couple of days ago, i followed your instructions on testing blower and ended up replacing the climate control module, cost me $280 at my local jaguar dealership, put in new climate control module and a/c works great now. Just in time for the central cali heat. great post Glendoramike.

 

sidsjag,

You said climate control module but do you really mean blower control module? My indie mechanic once told me that the climate control module is a $4K item from Jag!

Regards,
Ray (05 XJ8L)

 

oops, i think its called blower control module. its the one that tells your a/c how much air to blow out.

 

This information was spot on. Did the job there just now, blower fixed, saved money. Thanks.
Alec

 

You gave me the confidence to tackle it. Fan is now running with jumper. Blower control modulator is on order. Excellent job guys. Probably save me $500.

 

I've added this to the How To section

 

TIP: Pry the cover off the control module (resistor), look under the pc board on one end, you'll see a thermal fuse under a clip. Pop it out, de-solder it, ck with meter to see if blown. solder in new fuse...cost...almost nothing.

 

Just to let you all know that today I had my blower control module replaced after noticing no fan was running last Sunday, a day of torrential rain.

This job turned out to be a bit of a saga. Monday the shop confirmed the blower module was u/s but didn't have one in stock so ordered one and on Wednesday, I went in for the new one to be fitted. The blower still didn't work !! Mechanic (who used to work as a customer liaison engineer at Jaguar) did various tests but could find nothing wrong. Hints were made I might have a wiring loom problem. However, this guy is good, and fortuitously, another X350 was in the shop that day, so he took the module off this car and tried it, and away went the blower like a good'un. So the "new" part did not work. Another was ordered and fitted today, and the fan is now operational. What the shop think has happened is another shop have gotten confused and returned a faulty unit in the box the replacement came in, and this got accepted back as surplus to requirements. However, we will never know, and at least I now have a working fan.

It is amazing how you rely on this fan to (1) keep the car comfortable, and (2) keep the windows clear.

Anyway the part cost £106.55, plus fitting labour of £72.75. Then with our UK VAT tax of 20%, final bill was £216.

I hope this is my final one for 2012.

 

There is another way.................

How roberwil 'stole' from the *******s

 

Hi Awesomeauto,
I did remove the thermal fuse in blower control module and test it. Sure enough it was bad. But where to get a replacement?

 

Well I didn't have time to look, so I just opened up a 7 1/2 amp glass fuse, slid a small heat shrink over it and soldered it in. Original was 2 amp, it's the control circuit which is also fused elsewhere. But you can prolly find one at digikey.com

 

Thanks to the procedures provided by BRUTAL (via GlendoraMike) and AWESOMEAUTO, I now have a working blower. I tried my local electronics parts shop and they were able to supply new Thermal cutouts for $2.99 EACH, albeit a little larger than the original. I was able to fix the control module that came out of the car, plus one I bought on eBay for $23 which also did not work when it arrived. Since the new thermal cutout is bigger than the original and about 4C higher in temperature rating, it now hangs from the underside of the circuit board in mid-air rather living in the recess that the old one was removed from.
In my case, the glovebox did not drop to the floor all that easily once all the screws were removed. What helped was to remove the piece of ductwork immediately behind the bottom of the glove box, which is held up by a single small torx fastener.
But thanks again. I got out of this for less than $30 and now have a spare blower control module.

 

Great info on what seems to be a fairly common problem

 

I was able to repair my blower module using this helpful information. I was able to fix it by replacing the thermal cutoff (fuse), as described earlier.

I was able to find the exact part from digikey.com - part P102920-ND. This is made by Panasonic their part EYP-2BN109. Cost $0.43 (I had to buy 10)

If anyone would like one of these parts to attempt their own repair I would be happy to mail you 1 as I have 9 left!! As a new member I assume most have ability to PM me.

 

Tkanks EVERYONE! This site certainly works for helping each other.
I would appreciate member VDPBlue sending me one of the Panasonic fuses you bought. My email is: Wfennelly@comcast.net so we can arrange this. Thanks again.