Computer Diagnostics and Tuning Technical discussion on diagnostics and programming of the F-body computers

hooking up obd1 to a obd2 scanner

Old Nov 20, 2007 | 07:54 AM
  #1  
roller71's Avatar
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hooking up obd1 to a obd2 scanner

i have a actron super auto scanner but it only came with 16 pin plug for obd2 dlc. My fire bird has the 16 pin but is a obd1. Is there away to hook this plug up to the dlc to get a obd1 reading. my scanner is set up to read either, but dont know if cable is plugging in to right pins. Scanner says is not reading connection, or do i have to buy the the obd1 plug and jump it to read the computer.95 firebird lt1
Old Nov 20, 2007 | 11:55 AM
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I think Shoebox has the diagram on his site.
Old Nov 21, 2007 | 06:56 AM
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Originally Posted by moparman
I think Shoebox has the diagram on his site.
FOR AND OBD 1 PLUG, BUT NOT A OBD2 CORD THAT SCANS BOTH OBD1 AND OBD2 FROM SCANNER
Old Nov 21, 2007 | 07:56 AM
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I would think the cable you have would work if the scanner can do OBD-I. If not, you need the correct cable.
Old Jun 1, 2008 | 10:42 AM
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have the correct cable and tried your method says cant find pcm. also if i plug obd2 cable in the port it reads it, but its a obd1 car most everthing says off on reading and shows no fault codes this car is gonna drive me crazy. ps changed everthing including harness and still want fire, and know my fuel pump not coming on, which it was b4 and it want come on with the jumper on harness and it has power to the unit..... confused
Old Jun 1, 2008 | 11:06 AM
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First, verify that the Actron scanner is good for both OBD-II and OBD-I. If its an OBD-I scanner, often the OBD-I cables are "extra cost" options. They should offer a cable, or a cable plus adapter specifically for the few oddball GM cars that had the 16-pin ALDL connector with an OBD-I PCM.
Old Jun 1, 2008 | 11:47 AM
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Originally Posted by roller71
have the correct cable and tried your method says cant find pcm. also if i plug obd2 cable in the port it reads it, but its a obd1 car most everthing says off on reading and shows no fault codes this car is gonna drive me crazy. ps changed everthing including harness and still want fire, and know my fuel pump not coming on, which it was b4 and it want come on with the jumper on harness and it has power to the unit..... confused
Just because the cable plugs in does not mean it is the correct cable. If it was meant for OBD-II only, it probably won't work. I am not sure it was Actron, but recently I was surprised to read that some scanner brand did not offer a cable that would work on the oddball 95s. Autoxray does for their scanners.
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