Crazy K Posted September 6, 2006 Report Share Posted September 6, 2006 my thought before, and again... is that you could splice the wires from a salvaged OBD2 car's connector into the wires from an obd 1.5 Data Link Connector(spliced in parrallel, so as to both availible), and be able to read the codes with a OBD 2 computer reader anywhere. Part of the reason for me wondering if this is possible is that a few times I have looked into it I have been told that an adapter was needed to link their diagnotic computer to the DLC 94 CS OBD 1.5 DLC pinout (12 pin connector) M L K J H G A B C D E F A BLK ground J DK GRN entertainment and comfort serial data K PPL Diagnotic request to diagnostic energy reserve module M TAN serial data input/output OBD2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 2 PPL 4 BLK (Chassis) Ground 5 BLK (pcm?) Ground 9 TAN Baud Data 16 ORN power source, 12+volts (Note 4,5=Ground 16=Battery+ are standard pins for the OBD-II standard thoughts and comments? Quote Link to comment Share on other sites More sharing options...
slick Posted September 6, 2006 Report Share Posted September 6, 2006 In theory, yes you could. I know when people swap (say the l67 into a 92 3.1 beretta), they have a wiring mess to deal with, mainly because they don't have the appropriate firewall connector. It will mainly consist of matching the obd1 wires to the appropriate obd2 pin. Quote Link to comment Share on other sites More sharing options...
GnatGoSplat Posted September 6, 2006 Report Share Posted September 6, 2006 Ken, this is the best I can find right now: http://www.id2.cz/obd2/pinout_obd2.png For a GM, Pin 2 is the serial data wire. Only 3-pins are used for GM as far as scanning is concerned. http://www.nology.com/obd2connector.htm GM uses VPW. I don't have full pinouts though. Quote Link to comment Share on other sites More sharing options...
Crazy K Posted September 6, 2006 Author Report Share Posted September 6, 2006 let me resate the idea for clarity... since I am suprosed at the low amount of response. I would still be operating with the obd1.5 as stock, with the obd2 connector wired in. any further feedback? I hope to hit a j/y in the next week and snag an OBD 2 connector from a GM car. Quote Link to comment Share on other sites More sharing options...
Stevo Posted June 30, 2007 Report Share Posted June 30, 2007 I understand this is an old question but instead of repeating whats going on here I'd like to keep it going. Will an OBD2 reader pick up OBD1.5 codes? Is the 1.5 setup a 2.X setup wired on a 12 pin setting? If you rewire the connector will it confuse the reader instead and cause it to not understand the information it is reading? Quote Link to comment Share on other sites More sharing options...
19Cutlass94 Posted June 30, 2007 Report Share Posted June 30, 2007 are you wanting to do this just so that you can pull codes? Quote Link to comment Share on other sites More sharing options...
Crazy K Posted June 30, 2007 Author Report Share Posted June 30, 2007 It would make code pulling easier if it could be done. fortunately, I now have a location where I can scan an OBD1.5. I would simply have both the proper obd 1.5 and ghetto obd II connector present so I could use whatever i find assuming the idea works. I still do not know the answer. I will have to try it myself! hmmm Quote Link to comment Share on other sites More sharing options...
19Cutlass94 Posted June 30, 2007 Report Share Posted June 30, 2007 scanning OBD1.5 is not a big deal at all. If your gonna do that, convert the car to OBDII then come do mine Quote Link to comment Share on other sites More sharing options...
ManicMechanic Posted July 1, 2007 Report Share Posted July 1, 2007 It would make code pulling easier if it could be done. fortunately, I now have a location where I can scan an OBD1.5. A national chain, perhaps? Quote Link to comment Share on other sites More sharing options...
Crazy K Posted July 1, 2007 Author Report Share Posted July 1, 2007 i found an AZ in Cleveland, and one on the far south side of Indy which has the correct universal scanner to use. Most of them only have the OBD 2 scanner. Quote Link to comment Share on other sites More sharing options...
19Cutlass94 Posted July 1, 2007 Report Share Posted July 1, 2007 You guys need to invest in an OTC scan tool! Quote Link to comment Share on other sites More sharing options...
ManicMechanic Posted July 1, 2007 Report Share Posted July 1, 2007 Yes, I do. However...I might just go OBD II when the L67 goes in the van. Quote Link to comment Share on other sites More sharing options...
mfewtrail Posted July 1, 2007 Report Share Posted July 1, 2007 IF any of you have a laptop available, buy an appropriate cable and use the tunerpro definition file that Ryan(search here!) wrote for "OBD 1.5" to scan your car for codes, etc. Quote Link to comment Share on other sites More sharing options...
Crazy K Posted July 1, 2007 Author Report Share Posted July 1, 2007 IF any of you have a laptop available, buy an appropriate cable and use the tunerpro definition file that Ryan(search here!) wrote for "OBD 1.5" to scan your car for codes, etc. I have an OBD 1 cord that i tried in two different obd 1.5 cars. the only thing that works is the tach, everything else has false readings. It is a datamaster cable, do you think it can be used with the tunerpor thing you mentioned? Quote Link to comment Share on other sites More sharing options...
mfewtrail Posted July 2, 2007 Report Share Posted July 2, 2007 Ken, I would imagine that it would work. TGPilot on the board would probably know for sure. Tunerpro is free to download & use, so it wouldn't take you long to try it out. Download the "RT" version of tunerpro. Quote Link to comment Share on other sites More sharing options...
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