Member Since: 18 Jun 2008
Location: Portsmouth
Posts: 60
FBH and CAN bus
Do you have to have the FBH connected to the CAN bus? Will it flag a DTC if removed from the bus?
I have a Webasto timer fitted at the mo, just want to run the FBH independently.
Fed up the vehicle overriding what I want on or off!
I know the car uses the FBH for supplementary heating, but I can easily rig up a PIC to monitor outside temp, coolant temp and engine running, to fire up the FBH to assist vehicle warm up/heating...
Ta
Rob
13th Oct 2012 2:50 pm
Martin Site Admin and Owner
Member Since: 06 Nov 2004
Location: Hook Norton
Posts: 18518
It will work without the CAN connected, I have an IanNP harness which disconnects the FBH from the CAN 06 D3 SE / 15 LR D90 XS SW / 88 LR 90 Td5 / 68 BMW 2000 ti
Any issues with the site let me know!
13th Oct 2012 3:58 pm
Robbed666
Member Since: 18 Jun 2008
Location: Portsmouth
Posts: 60
Cheers Martin!
Going to use a PIC with a RTC and alarm, 18F24J11 springs to mind, also has more than enough ADC channels for temps etc.
RTC to replace the Webasto timer. Also allows multiple programmed cycles including a month function for winter settings.
Try and use the 'Land Rover' button on the key fob for remote manual start for the FBH..
Need to have prod about
Sounds like this week's project....
13th Oct 2012 4:45 pm
marco 110
Member Since: 15 Nov 2009
Location: SALLES 33
Posts: 1014
Robbed666 wrote:
Sounds like this week's project....
Sounds like a great project !!!!
Interesting !Marco.
-D4 sdv6 HSE 2012 , high beam assist , surround cam, tv , and a lot of nice stuff..
Member Since: 06 Nov 2004
Location: Hook Norton
Posts: 18518
For testing, fine, remove the CAN pins but for general use I would leave the CAN bus connected so you still have automatic control.
How are you going to talk to the FBH from the PIC?06 D3 SE / 15 LR D90 XS SW / 88 LR 90 Td5 / 68 BMW 2000 ti
Any issues with the site let me know!
13th Oct 2012 4:52 pm
bellautos
Member Since: 02 Feb 2006
Location: NorthYorkshire
Posts: 2532
Our FBHIC runs the heater independantly and the cars CAN does not stop our control or the heater from funning when we unlock and lock the car, for more in depth a control as well as FBH feed back info our GSM module monitors many things you mention as seen below.
Off 0
Temp 59
Mode E
Volts 12.4
Faults 0
LS 3
GSM 10
Vsn: 1.3i
13th Oct 2012 6:41 pm
Antjp
Member Since: 09 Aug 2013
Location: Warringon
Posts: 349
Which pins do I need to remove to stop the fbh switching off when I unlock the car.
I want control of it using the webasto oval timer only. I don't want errors flagging up on my dash so I thought I'd ask if anybody has done this.
15th Dec 2013 9:58 am
Martin Site Admin and Owner
Member Since: 06 Nov 2004
Location: Hook Norton
Posts: 18518
CAN bus at the D3 FBH are the following wires:
yellow/white (pin 7)
yellow/blue (pin 4)
If you are removing them make sure to insulate and secure the ends so they do not touch each other or any metal part on the vehicle.06 D3 SE / 15 LR D90 XS SW / 88 LR 90 Td5 / 68 BMW 2000 ti
Any issues with the site let me know!
16th Dec 2013 10:08 am
Antjp
Member Since: 09 Aug 2013
Location: Warringon
Posts: 349
Thanks pal I will insulate them for definite.
16th Dec 2013 4:10 pm
Antjp
Member Since: 09 Aug 2013
Location: Warringon
Posts: 349
I have removed them wires insulated and I had to pull the fuse an replace just to reset and everything is working perfect. Thanks for your help
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