Mechanics

WHAT CODE READER CAN I USE FOR A 94 GM THAT USES ONLY THE A AND M PINS ON THE DATA LINK.THERE IS NO B TERMINAL.

1994 Chevrolet Beretta • 160,000 miles

Not all obd 1 readers work on 94 or 95 gm
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Smedly
January 18, 2012.




A and m pins only on data link

Tiny
Smedly
Jan 18, 2012.
So do you have a 12 pin or 16 pin connector?

Saturntech9
Jan 18, 2012.
12 pin but it only has wires to a and m pins, does not use a and b

Tiny
Smedly
Jan 18, 2012.
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

Cadieman
Jan 18, 2012.
In your case you cant flash the codes. What code reader do you have?

Saturntech9
Jan 18, 2012.
Read above there is no b terminal so you cant flash the codes it needs a scan tool.

Saturntech9
Jan 18, 2012.
I have the equis 3120 that does not work in this case. I am told I need a powered reader

Tiny
Smedly
Jan 18, 2012.
Do I have the only 94 chev with this type of data connection?
What type scan tool do I need?

Tiny
Smedly
Jan 18, 2012.
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.
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Saturntech9
Jan 18, 2012.
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.

Saturntech9
Jan 18, 2012.

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