12 pin but it only has wires to a and m pins, does not use a and b
January, 18, 2012 AT 6:26 PM
U can buy key tools that plug in. Then you read the flashing light on the dash for codes. Recheck the connector because a and b are the right wires. Just buy a test key and plug it in. Ty for using 2carpros
January, 18, 2012 AT 6:28 PM
In your case you cant flash the codes. What code reader do you have?
January, 18, 2012 AT 6:32 PM
Read above there is no b terminal so you cant flash the codes it needs a scan tool.
January, 18, 2012 AT 6:37 PM
I have the equis 3120 that does not work in this case. I am told I need a powered reader
January, 18, 2012 AT 6:49 PM
Do I have the only 94 chev with this type of data connection?
What type scan tool do I need?
January, 18, 2012 AT 6:52 PM
Thats crazy it didnt come with a cig lighter adapter?Or have a battery inside the scanner?All the obd1 cars I know of dont power the scan tool off the connector. Iam not familar with the equis scanner I have the actron scanner with the obd1 domestic connectors it came with a cig lighter adapter to power it plus it has a 9V inside of it.
January, 18, 2012 AT 6:56 PM
They had the newer 12 pin connectors with and without that pin. The ones with that pin you could use a jumper and flash the codes out. Without that pin you have to use a scan tool to read codes.