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diagnostic tool help

2.9K views 6 replies 3 participants last post by  d-9  
#1 ·
I would really like to be able to do diagnostics on vans for a couple of reasons..... Firstly I am starting a workshop group in my area so it would be brilliant to be able to have it there for people who need it.
Also I my thermo top hasn't been working and I read this

The factory fitted Thermotop C'S are part of the multivan loom, and the fuse is in the auxillary panel. (i cant remember which one, but i can check for you if you need).

If youre heater isnt working, then you need to hook up VCDS, and check for faults in module 18, it will probably be locked out!, this needs to be re-set with VCDS.

These heaters will lock out after three failed firing attemps, usually caused by lack of fuel.

And this......

If VCDS Module 18 shows 'HEATER LOCKOUT'. then you can clear it.

Basically the fuel pickup in the tank could be lower, and if the ambient temp is below 11 degrees then the heater will go through the firing sequence. so if youre fuel tank is very low, and low over a 3 day period, then it will lock out.

In VCDS control module 18, you need to go to adaption and insert a (1) in block 003, then clear faults.
Can take a couple of attempts to make it stick.

So would like to be able to do this myself.
 
#5 ·
I assumed you knew what it was, given you talk about it in your first post Rasp:

VCDS is what was formerly called 'vagcom', its a pc-based diagnostics suite. You can either buy a clone lead and pay $99 to register vcds-lite, which gives you most functionality, or you can buy the full version with lead for about ÂŁ260. (or you can get a pirate/knockoff version for anywhere between free and ÂŁ50, although why anyone would pay ÂŁ50 for stolen software is beyond me).

I got the full version, because the lead has got the license embedded in it, so you can swap it between different laptops without needing to register the software (you can only register vcds lite on two computers before you have to buy a new license - given my history of destroying laptops, this seemed a bit risky). Its nice, it just works :) I also have a windows 8 tablet (HP Stream 7, ÂŁ99) which vcds works nicely on, with the full lead I can just swap between laptop and tablet depending on what I need to do.

You can register VCDS lite on the VCDS site, or buy the full version from one of the uk importers, I got mine from gendan: http://www.gendan.co.uk/product_VCHU.html

If you decide to buy a clone lead, make sure you get a decent clone, some of the blue cables on ebay contain fake FTDI chips, which got wiped by a recent driver update (thanks FTDI) - apparently they have fixed the driver so it has stopped killing the leads, but mine got killed with the most recent drivers, and its not something I'd want to risk. If I was buying a clone lead, Id buy one like this, from a genuine seller with a warranty: http://www.gendan.co.uk/product_VAGUSB.html

You should also consider the age of the vehicles you wish to talk to, vcds lite doesnt work on the T5.1 afaik, only older.
 
#4 ·
It's not easy to use no, but it's easy to read and clear faults.

The full version isnt cheap, but does everything.

I suggest you download VCDS Lite, from the rosstech site, and buy a cheap cable. this will enable you to read faults and clear most issues, but it is restricted!.

In youre case to reset the heater, has to be done in adaption, and VCDS lite does not allow that.

But for less than 10 pounds you can have a play and see what you think.

ill post a link for a cable later

col