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Matt110



Member Since: 29 Jun 2014
Location: UK
Posts: 680
United Kingdom 
Webasto diagnostics wire for a thermotop 12v switched?
Hi, I have an ex-rover 75 12v switched thermotop C which has stopped functioning and needs a reset and a code read so I know what to change to repair it.

I know Martin used to sell wires for connecting and reading the units.

Have this link....

https://www.disco3.co.uk/wiki/Fuel_Burning...t_Software

But I'm not sure this works with my 1 pink diagnostic wire? And I don't think the link to the shop works any more?

Could I ask for your help please any webasto gurus out there.[/quote][/b]
Post #1027048 6th Mar 2024 9:39pm
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jst



Member Since: 14 Jan 2008
Location: Taunton
Posts: 8026
 2011 Defender 110 Puma 2.4 USW Stornoway Grey
was it in your vehicle working?

flashing lights or display read out if it has one? Cheers

James
110 2012 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop
Post #1027248 8th Mar 2024 7:04am
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Martin
Site Admin


Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6605
United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Montalcino Red
You can diagnose the TTC with the WTT software, yes.

There’s a menu option to pick the TTC, I have done it with BMW/L322 heaters.  1988 90 Td5 NAS soft top
2015 D90 XS SW
Post #1027254 8th Mar 2024 9:00am
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Martin
Site Admin


Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6605
United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Montalcino Red
Pin 2 is diagnostic/comms line, is that wired in?  1988 90 Td5 NAS soft top
2015 D90 XS SW
Post #1027255 8th Mar 2024 9:01am
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Matt110



Member Since: 29 Jun 2014
Location: UK
Posts: 680
United Kingdom 
Thanks. Sorry for really delayed reply.

Yep (pink?) pin2 diagnostics wired in and I left it out of the loom to be able to access it.

Curiously however.....

I reset it properly today by turning the power off whilst it was switched on.

On restart, it fired up normally, got into "normal" operation with fan at full speed and fuel pump ticking at normal operation speed, then shut down and dumped a massive cloud of white smoke out the exhaust. Which I assume to be a symptom of the fast shut down rather than the actual error state in operation.

Are there any common faults they develop that cause.... I guess... An over heat and shut down or something else similar?
Post #1029098 23rd Mar 2024 7:01pm
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Matt110



Member Since: 29 Jun 2014
Location: UK
Posts: 680
United Kingdom 
Sorry. Quick bump in case anyone can offer any guidance
Thanks.
Post #1030146 1st Apr 2024 10:34pm
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