940 diagnostic reader diagram

Greybeard · Nov 28th, 2017, 14:48

Hi all, I'm looking to build a diagnostic reader for the 940 (1997 LPT), gpl1968 has listed the parts in https://www.volvoforums.org.uk/showthread.php?t=102112 but there's no sign of the wiring diagram. Had a good look round but because they're all old posts the image hosting appears to have expired. Is the diagram buried somewhere? Can anyone help?

baggy798 · Nov 28th, 2017, 19:39

Greybeard · Nov 28th, 2017, 20:49

A really quick and really useful response from baggy798, circuit diagram and piccy of the finished item. Wonderful! Many thanks.

aardvarkash10 · Nov 29th, 2017, 07:44

this needs to be pinned

ThePurplePanther · Nov 29th, 2017, 11:14

Seconded.

I'm going to try and build one during my down time over christmas, so will report back with my progress/lack of

gpl1968 · Nov 29th, 2017, 23:00

Sorry, the original was deleted in the great Photobucket purge.....
I have uploaded another copy to this forum so hopefully it won't disappear again. That said, I am happy for anyone to save a copy and distribute as they see fit.
Cheers

Forrest · Nov 30th, 2017, 22:01

This is my take on it. By using an off-the-shelf OBD breakout box in place of the rotary switch I greatly reduced the amount of soldering needed. Otherwise, just the same as above.

arctan · Dec 12th, 2018, 22:20

Quote:

Originally Posted by gpl1968

Sorry, the original was deleted in the great Photobucket purge.....
I have uploaded another copy to this forum so hopefully it won't disappear again. That said, I am happy for anyone to save a copy and distribute as they see fit.
Cheers

Nice to see this subject is alive! And that people are getting code readers at a sensible price. Some time ago (a year or more), I bought the bits, mounted everything, then couldn't find my soldering iron. It's still in the shed- but I'm seeing someone with an iron soon! But. I have an idea that the electric seat has a pin, (a diagnostic output like the others). I can't find the diagram that made me think this ...

loki_the_glt · Dec 13th, 2018, 08:52

I still have a couple of units built-up if anyone is looking for one; they're based on GPL1968's diagram.

See also this thread: https://www.volvoforums.org.uk/showthread.php?t=285498[/URL]

loki_the_glt · Dec 13th, 2018, 11:17

Quote:

Originally Posted by Forrest

This is my take on it. By using an off-the-shelf OBD breakout box in place of the rotary switch I greatly reduced the amount of soldering needed. Otherwise, just the same as above.

Where did you get the neat break-out box?

Nov 28th, 2017, 14:48	#1
Greybeard Junior Member Last Online: Nov 13th, 2019 16:51 Join Date: May 2017 Location: Plymouth	940 diagnostic reader diagram Hi all, I'm looking to build a diagnostic reader for the 940 (1997 LPT), gpl1968 has listed the parts in https://www.volvoforums.org.uk/showthread.php?t=102112 but there's no sign of the wiring diagram. Had a good look round but because they're all old posts the image hosting appears to have expired. Is the diagram buried somewhere? Can anyone help?

Nov 28th, 2017, 19:39	#2
baggy798 🤍💙💗 Last Online: Today 03:42 Join Date: Mar 2006 Location: Lichfield	__________________ MY97 940 CD LPT Super Sports Edition 2 Turbo, Midnight Purple, 175,000 miles.

Dec 13th, 2018, 08:52	#9
loki_the_glt Torquemeister Last Online: Apr 22nd, 2024 11:43 Join Date: Dec 2004 Location: Asgard, Cheshire	I still have a couple of units built-up if anyone is looking for one; they're based on GPL1968's diagram. See also this thread: https://www.volvoforums.org.uk/showthread.php?t=285498[/URL] __________________ loki_the_glt - Skipper of the Exxon Valdez, driver of Sweden's finest sporting saloon - and pining for another Slant-4.

Nov 28th, 2017, 20:49	#3
Greybeard Junior Member Last Online: Nov 13th, 2019 16:51 Join Date: May 2017 Location: Plymouth	A really quick and really useful response from baggy798, circuit diagram and piccy of the finished item. Wonderful! Many thanks.

Nov 29th, 2017, 07:44	#4
aardvarkash10 Master Member Last Online: Oct 8th, 2022 22:22 Join Date: Sep 2016 Location: Auckland	this needs to be pinned

Nov 29th, 2017, 11:14	#5
ThePurplePanther Member at Large Last Online: Sep 8th, 2019 11:46 Join Date: Nov 2017 Location: Southampton	Seconded. I'm going to try and build one during my down time over christmas, so will report back with my progress/lack of

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