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03 August 2021 #1
Geoffrey Storey Saab Enthusiast
- Join Date
- 28 Oct 2013
- Location
- Stockton on tees England
- Posts
- 165
- Saab(s)
- 2000 9-3 viggen convertible
Errors on my viggen
I retrofitted parking sensors and tpms about 3 years ago and they worked fine.
Now I’ve got 4 errors 1 no
communication with CD player in the boot. 2 no communication with the rear parking sensors control unit. 3 no communication with the tyre pressure control unit. 4 no communication with the convertible roof control unit. This was shown using tech 2.
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03 August 2021 #2
- Join Date
- 10 Apr 2017
- Location
- Denham, England
- Posts
- 541
- Saab(s)
- 2011 2.0 9-5 Aero
Sounds like a discontinuity on the data bus.
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03 August 2021 #3
Geoffrey Storey Saab Enthusiast
- Join Date
- 28 Oct 2013
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- Stockton on tees England
- Posts
- 165
- Saab(s)
- 2000 9-3 viggen convertible
what is the data bus?
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04 August 2021 #4
- Join Date
- 10 Apr 2017
- Location
- Denham, England
- Posts
- 541
- Saab(s)
- 2011 2.0 9-5 Aero
All the electronic units in your car are connected to each other by digital data bus so that they can share information. Normally* this is just a pair of wires twisted together, known as a twisted pair, that run between the units. It is all described rather well in the 9-5 handbook and probably in that for the 9-3 as well.When you get the No Communication message it is because there is no data on the bus from those units. This may be because either they aren't powered or the bus isn't connected. Given that you have four units not communication the most likely reason is that the bus is disrupted in some way. Start by locating the units and checking the connectors.
*The 9-3 used fibre optics I believe so it is a very real possibility that the problem is with that loop.Last edited by GeoffR; 04 August 2021 at 11:41.
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04 August 2021 #5
Geoffrey Storey Saab Enthusiast
- Join Date
- 28 Oct 2013
- Location
- Stockton on tees England
- Posts
- 165
- Saab(s)
- 2000 9-3 viggen convertible
Thank you
Where would the best place be to look? Around where the ecu is?
Regards
Geoff
Sent from my iPhone using Tapatalk
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04 August 2021 #6
- Join Date
- 10 Apr 2017
- Location
- Denham, England
- Posts
- 541
- Saab(s)
- 2011 2.0 9-5 Aero
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04 August 2021 #7
Geoffrey Storey Saab Enthusiast
- Join Date
- 28 Oct 2013
- Location
- Stockton on tees England
- Posts
- 165
- Saab(s)
- 2000 9-3 viggen convertible
I've got wis but it won't run on my windows 7.
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04 August 2021 #8
- Join Date
- 10 Apr 2017
- Location
- Denham, England
- Posts
- 541
- Saab(s)
- 2011 2.0 9-5 Aero
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04 August 2021 #9
Geoffrey Storey Saab Enthusiast
- Join Date
- 28 Oct 2013
- Location
- Stockton on tees England
- Posts
- 165
- Saab(s)
- 2000 9-3 viggen convertible
i'm downloading wis that will run with windows 7.
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04 August 2021 #10
- Join Date
- 10 Apr 2017
- Location
- Denham, England
- Posts
- 541
- Saab(s)
- 2011 2.0 9-5 Aero
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