Member Since: 30 Jan 2023
Location: Northumberland
Posts: 22
the replacement fbh was of an early discovery 4, but is the same model of fbh, just test the ground side of the fbh connection & that is fine , will test the pins now !
5th Feb 2023 1:38 pm
Flatlander
Member Since: 20 Jul 2015
Location: Here
Posts: 575
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Last edited by Flatlander on 21st Feb 2023 10:16 pm. Edited 2 times in total
5th Feb 2023 1:46 pm
vizlauk
Member Since: 30 Jan 2023
Location: Northumberland
Posts: 22
tested pin 4 & 7 on the fbh to ground , the power is nearly the same as via the ignition
5th Feb 2023 1:48 pm
Flatlander
Member Since: 20 Jul 2015
Location: Here
Posts: 575
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Last edited by Flatlander on 21st Feb 2023 10:16 pm. Edited 1 time in total
5th Feb 2023 1:52 pm
Flatlander
Member Since: 20 Jul 2015
Location: Here
Posts: 575
...
Last edited by Flatlander on 21st Feb 2023 10:16 pm. Edited 1 time in total
5th Feb 2023 1:54 pm
vizlauk
Member Since: 30 Jan 2023
Location: Northumberland
Posts: 22
I had exactly the same problem with the original unit i took off, i can reconnect it to try it again but im not hopeful, the units are both marked up as ttv - no mention of evo on them ?
5th Feb 2023 1:55 pm
Motolab
Member Since: 18 Oct 2019
Location: Sleen
Posts: 1820
vizlauk wrote:
the replacement fbh was of an early discovery 4, but is the same model of fbh,
As flatlander says, it is NOT the same! Same shape, yes, but different model, like the difference between the D3 and the D4 themselves
Most important difference: the D4 uses different CAN-bus speed than the D3, so does the FBH…
So that D4 one, is NOT to be seen, let even manage, over the CAN-bus from a D3..Best regards
Harold
Always looking for Pre '55's & Pre war British Motorcycles! knowing or having one for sale? PM please. I visit the UK 6 times a year
Ps. I edit my texts quite often, english is not my native language, so I will edit My “typo’s” etc.
5th Feb 2023 1:56 pm
Flatlander
Member Since: 20 Jul 2015
Location: Here
Posts: 575
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Last edited by Flatlander on 21st Feb 2023 10:17 pm. Edited 1 time in total
5th Feb 2023 1:59 pm
vizlauk
Member Since: 30 Jan 2023
Location: Northumberland
Posts: 22
ive just looked at the plugs on a ttv evo are different to the ttv ? they do not fit !
5th Feb 2023 2:03 pm
Flatlander
Member Since: 20 Jul 2015
Location: Here
Posts: 575
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Last edited by Flatlander on 21st Feb 2023 10:17 pm. Edited 1 time in total
5th Feb 2023 2:15 pm
Martin Site Admin and Owner
Member Since: 06 Nov 2004
Location: Hook Norton
Posts: 18573
TT EVO (not V EVO) are different connectors to TTV and V EVO.
D3 TTV and D4 TTV EVO not compatible with each other.
A D4 FBH won’t operate on a D3. And vice versa.06 D3 SE / 15 LR D90 XS SW / 88 LR 90 Td5 / 68 BMW 2000 ti
Any issues with the site let me know!
5th Feb 2023 2:22 pm
vizlauk
Member Since: 30 Jan 2023
Location: Northumberland
Posts: 22
Both fb heaters are this model !
5th Feb 2023 3:07 pm
Martin Site Admin and Owner
Member Since: 06 Nov 2004
Location: Hook Norton
Posts: 18573
What model? Your screenshot doesn’t tell us anything.
If it’s from a D4 it won’t work on a D3, which is why you’re getting that comms error.
Swap the main PCB over from your D3 heater.
Edit: photo added after my comment above. You’ve only sent the label from the D3 heater (build date in 2004).
If it’s a D4 heater it won’t be the same part number. The model may be the same but doesn’t mean it’ll work. You can get a TTV for a VW but that doesn’t work on D3 either…
Your D4 heater may be a TTV. Some very very early D4 had TTV but they are programmed to communicate with a D4 and, again, don’t work on a D3.06 D3 SE / 15 LR D90 XS SW / 88 LR 90 Td5 / 68 BMW 2000 ti
Any issues with the site let me know!
5th Feb 2023 3:10 pm
vizlauk
Member Since: 30 Jan 2023
Location: Northumberland
Posts: 22
yes - i stand corrected, i have removed the fbh & the wiring in the internal plugs is different, so back to the drawing board with the original fbh - ive just stripped it to check if it was full of carbon, it is brand new inside, like it has never worked !
5th Feb 2023 4:36 pm
vizlauk
Member Since: 30 Jan 2023
Location: Northumberland
Posts: 22
FIXED
Well, all working now, can now test & pick it up with my iid tool, original unit wouldn't work , iid tool didn't pick it up either, so I got another fbh from a discovery 3 , fitted it , re- connected the fuel line & its now working.
I'm guessing original unit had an electrical fault in the circuit board, handy to keep it for spares incase I ever need a burner etc.
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