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FBH works with software but not with car
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arb
 


Member Since: 25 Jan 2019
Location: hampshire
Posts: 29

United Kingdom 2011 Discovery 4 3.0 SDV6 HSE Auto Buckingham BlueDiscovery 4
FBH works with software but not with car

Hi all - probably a case of naivety - so be gentle with me.

See what I did here.

Summary:
I now have a RRS FBH board in my (cleaned/serviced) heater unit.

It works perfectly with the WTT software, (burns strong & clean) but the car won't start it up (and yes it's very cold outside; yes I've tested the sensor resistances; also done a hard power reset of car).
It won't even attempt a start - I get a "U0166-87" code from the Autel diagnostics (lost communication with auxiliary heater control module) - so thinking it's probably the board swap that caused that.
FYI I don't have remote or timed heating normally available.

What are my options?

Or is it a case of get a remote kit or refit AGAIN with a like-for-like D4 unit?

Thanks in advance

arb
  
Post #220974711th Feb 2021 3:28 pm
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Martin
Site Admin and Owner 


Member Since: 06 Nov 2004
Location: Hook Norton
Posts: 18439

United Kingdom 2006 Discovery 3 TDV6 SE Manual Buckingham BlueDiscovery 3

You've fitted what is basically a D3 unit (pre-facelift RRS) to a D4. The D3 and D4 use different CAN bus specifications (29 bit ID for D3, 11 bit ID for D4).

It works with WTT as that is over the WBUS, and not CAN related.

When fitted back in the Disco, you have a mismatch between the CAN IDs, the heater presumably isn't sending out (or listening to) the signals on the correct IDs.

Same applies to pre/post facelift [2010MY] RRS Mk1.
 06 D3 SE / 15 LR D90 XS SW / 88 LR 90 Td5 / 68 BMW 2000 ti
Any issues with the site let me know! 
 
Post #220975211th Feb 2021 3:41 pm
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arb
 


Member Since: 25 Jan 2019
Location: hampshire
Posts: 29

United Kingdom 2011 Discovery 4 3.0 SDV6 HSE Auto Buckingham BlueDiscovery 4

Thanks so much Martin - so I'll be needing a donor D4 board => should i post that in the main FBH thread or in 'wanted'? - (or would both be allowed?)

Cheers

arb
  
Post #221006412th Feb 2021 2:29 pm
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Martin
Site Admin and Owner 


Member Since: 06 Nov 2004
Location: Hook Norton
Posts: 18439

United Kingdom 2006 Discovery 3 TDV6 SE Manual Buckingham BlueDiscovery 3

Wanted ad please (a 2010+ RRS1 will also work)
 06 D3 SE / 15 LR D90 XS SW / 88 LR 90 Td5 / 68 BMW 2000 ti
Any issues with the site let me know! 
 
Post #221008612th Feb 2021 3:29 pm
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arb
 


Member Since: 25 Jan 2019
Location: hampshire
Posts: 29

United Kingdom 2011 Discovery 4 3.0 SDV6 HSE Auto Buckingham BlueDiscovery 4

Thanks. Done.
  
Post #221340024th Feb 2021 1:02 pm
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