XPost: uk.d-i-y
On Fri, 07 Jun 2024 16:03:17 -0400, Paul wrote:
On 6/7/2024 12:57 PM, David wrote:
On Fri, 07 Jun 2024 14:38:01 +0000, David wrote:
I have a fault showing up in diagnostics which says Company Comfort
Databus is in single wire.
<snip>
https://en.wikipedia.org/wiki/CAN_bus
Company = Proprietary = "Your hand scanner cannot scan it"
Comfort = Heating and Cooling control (front seat temp, back seat temp)
Bus
<snip>
The CAN Comfort/Infotainment Data Bus (100 Kbit/s) Control Unit has:
- Fully automatic air conditioning / air conditioning control unit -Door control unit - Comfort Control Unit - radio and navigation display unit control unit
That implies two separate buses. If the air conditioning control shorts
out, the Airbag still works (in the sense that when the car probes the airbag, it finds it "ready to fire").
We use our imagination on automobiles, because we don't expect
documentation.
Paul
Thanks for the usual comprehensive explanation.
The main very helpful point is that any fault showing on the Comfort Bus
is unlikely to be associated with the fuel rail pressure, which helps a
lot.
It is also unlikely to be mission critical.
Cheers
Dave R
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