Solved! Webasto FBH Diags - Page 3

sigor · 28th January 2008, 13:54

I've fouhd sometnihg on ebay (Germay).
http://cgi.ebay.de/Webasto-Thermo-TO...QQcmdZViewItem

This is a PCB, isn't it? But all the PCBs are not the sam as I understand. I will aks here in Slovenia at Webasto. They have already told me to come to test my FBH and then they see what could be done.

Keith · 28th January 2008, 16:03

That PCB is not suitable, if you look carefully it does not have the pins in the connector for the water pump

Personally I am not going to bother with PCBs from Ebay I have bought two so far both allegedly brand new, both seem faulty.

Net result for me this exercise is far to time consuming and is starting to make a hole in my pocket so I don't think I will continue with it.

AndyJ · 28th January 2008, 18:07

Is it a common fault? Maybe an easy fix...

CDTi · 12th March 2008, 19:22

Keith

Do I need another interface for this in addition to the Ibus one?

black olive · 12th March 2008, 21:33

given thenumber of duff webasto's knocking around with PCB issues it would be good if we could get some real technical info from them to enable us to fault find and sort the issues- the guys in the know at webast know there are issues but wont release data - as an electronics engineer Ifind it all very frustrating

CDTi · 12th March 2008, 21:55

Quote:

Originally Posted by black olive

the guys in the know at webast know there are issues but wont release data - as an electronics engineer Ifind it all very frustrating

Knowledge is power - and in this case money as you have to pay over £200 for a new PCB/heat exchanger assembly.

Keith · 12th March 2008, 21:56

Quote:

Originally Posted by CDTi

Keith

Do I need another interface for this in addition to the Ibus one?

Nope the resler will work fine with fbh connected to the car but will not work stand alone on the bench and I can't work out why.

As an ex Avionics engineer I find it annoying as well Steve

Departed · 8th June 2009, 19:15

Just come to this post having bought a Diesel.

I can guess why the Resler doesn't work off the car: pull up resistor to 12v. It's only present in one unit (BCU I think) so needs to be added if that's not in circuit.

I guess the webasto one has this.

If it will help, I'll try to find what value.

black olive · 10th June 2009, 19:52

try a 4k7 for starters

Departed · 11th June 2009, 20:12

there's a few threads around, and some refer to the Wbus, which we don't use.

Does anyone know if the unit actually supports w bus?

Seems an eaier way of connecting stuff up.

12th March 2008, 19:22	#24
CDTi This is my second home No longer in the MGR club Join Date: Nov 2006 Location: Tipperary Posts: 3,933 Thanks: 35 Thanked 51 Times in 35 Posts	Keith Do I need another interface for this in addition to the Ibus one? __________________ 'Tis better to be silent and be thought a fool, than to speak and remove all doubt.

12th March 2008, 21:33	#25
black olive I really should get out more....... 260 SE vin 214 ( last mark 1 260 ) Join Date: Dec 2006 Location: Lancashire Posts: 2,009 Thanks: 1 Thanked 8 Times in 4 Posts	given thenumber of duff webasto's knocking around with PCB issues it would be good if we could get some real technical info from them to enable us to fault find and sort the issues- the guys in the know at webast know there are issues but wont release data - as an electronics engineer Ifind it all very frustrating __________________ [SIGPIC][/SIGPIC]

10th June 2009, 19:52	#29
black olive I really should get out more....... 260 SE vin 214 ( last mark 1 260 ) Join Date: Dec 2006 Location: Lancashire Posts: 2,009 Thanks: 1 Thanked 8 Times in 4 Posts	try a 4k7 for starters __________________ [SIGPIC][/SIGPIC]

28th January 2008, 13:54	#21
sigor Regular poster Rover 75 CDT Saloon Join Date: Nov 2006 Location: Maribor Posts: 59 Thanks: 1 Thanked 0 Times in 0 Posts	I've fouhd sometnihg on ebay (Germay). http://cgi.ebay.de/Webasto-Thermo-TO...QQcmdZViewItem This is a PCB, isn't it? But all the PCBs are not the sam as I understand. I will aks here in Slovenia at Webasto. They have already told me to come to test my FBH and then they see what could be done.

28th January 2008, 16:03	#22
Keith This is my second home ZT400 Join Date: Oct 2006 Location: Ellesmere Posts: 5,948 Thanks: 0 Thanked 43 Times in 29 Posts	That PCB is not suitable, if you look carefully it does not have the pins in the connector for the water pump Personally I am not going to bother with PCBs from Ebay I have bought two so far both allegedly brand new, both seem faulty. Net result for me this exercise is far to time consuming and is starting to make a hole in my pocket so I don't think I will continue with it.

28th January 2008, 18:07	#23
AndyJ Avid contributor MG ZT CDTi 135 XPower Grey Join Date: Nov 2006 Location: Chertsey, Surrey Posts: 116 Thanks: 0 Thanked 0 Times in 0 Posts	Is it a common fault? Maybe an easy fix...

8th June 2009, 19:15	#28
Departed Retired -- Join Date: Jan 2007 Location: -- Posts: 3,785 Thanks: 0 Thanked 4 Times in 4 Posts	Just come to this post having bought a Diesel. I can guess why the Resler doesn't work off the car: pull up resistor to 12v. It's only present in one unit (BCU I think) so needs to be added if that's not in circuit. I guess the webasto one has this. If it will help, I'll try to find what value.

11th June 2009, 20:12	#30
Departed Retired -- Join Date: Jan 2007 Location: -- Posts: 3,785 Thanks: 0 Thanked 4 Times in 4 Posts	there's a few threads around, and some refer to the Wbus, which we don't use. Does anyone know if the unit actually supports w bus? Seems an eaier way of connecting stuff up.