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700/900 Series General Forum for the Volvo 740, 760, 780, 940, 960 & S/V90 cars |
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940 code readerViews : 568 Replies : 9Users Viewing This Thread : |
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May 25th, 2020, 13:39 | #1 |
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940 code reader
Do I remember correctly that someone was making Volvo 940 code readers for the later cars with the port in the armrest cubby?
If so are they still available? |
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May 25th, 2020, 15:04 | #2 |
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Hi Luke
It's Loki the GLT I have one of his that I bought off another member who sold his 940. Handy to have. It enabled me to find out what abs sensor was at fault. Cheers
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V70 D5 SE Geartronic 215bhp Saville Grey 2012MY 940 LPT Manual 1996 740 SE 1990 Last edited by griston64; May 25th, 2020 at 16:33. |
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May 25th, 2020, 16:29 | #3 |
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If you’re a bit technically-minded it’s quite easy to build your own code reader along the same principles as the earlier diagnostic units in the engine compartment. There used to be some good instructions on here with pictures, but the pictures have gone now.
https://www.volvoforums.org.uk/showthread.php?t=61562 But there is an even simpler version here which is worth a look. https://www.matthewsvolvosite.com/fo...p?f=37&t=60660 |
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May 25th, 2020, 17:09 | #4 |
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Here’s the circuit- cheap and easy to make if you can solder.
Cheers |
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May 25th, 2020, 23:28 | #5 |
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Handy to build yourself one Luke!
The "simpler version" referred to by Forrest doesn't have a current limiting resistor in it, the original author doesn't specify it should be a 12V LED either! Using a normal LED without the resistor would result in a fried LED and possible a damaged ECU - the resistor is necessary! *** EDIT *** - i'll have a look in my bits and pieces tomorrow, see what bits i've got. What colour LED would you like?
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Cheers Dave Next Door to Top-Gun with a Honda CR-V & S Type Jag Volvo gone but not forgotten........ Last edited by Laird Scooby; May 25th, 2020 at 23:54. |
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May 26th, 2020, 07:32 | #6 | |
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I've message Loki so if he doesn't have any available to buy as time is hard to come by at the moment then I will build one. Ummmm mystic silver to match the car please haha red or green will do fine, thanks Dave. |
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May 26th, 2020, 09:18 | #7 | |
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Got plenty of red and green LEDs............
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Cheers Dave Next Door to Top-Gun with a Honda CR-V & S Type Jag Volvo gone but not forgotten........ |
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May 26th, 2020, 09:33 | #8 | |
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loki_the_glt - Skipper of the Exxon Valdez, driver of Sweden's finest sporting saloon - and pining for another Slant-4. |
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May 26th, 2020, 17:00 | #9 |
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Just got to locate a suitable LED for the reader. I think the model railroad gremlins have hidden them.
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loki_the_glt - Skipper of the Exxon Valdez, driver of Sweden's finest sporting saloon - and pining for another Slant-4. |
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May 26th, 2020, 19:33 | #10 |
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PM replied to Loki.
Nothing wrong with the ECU Dave just that if I was to make one and hadn't had your advice on the resistor it could have been fried. |
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