Why does my diagnostic link only have two wires

Tiny
SMEDLY
  • MEMBER
  • 1994 CHEVROLET BERETTA
  • 160,000 MILES
Cant check codes because only have two wires on far right top and bottom
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Wednesday, January 18th, 2012 AT 10:28 AM

11 Replies

Tiny
WRENCHTECH
  • EXPERT
Here's what it should have


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Wednesday, January 18th, 2012 AT 10:59 AM
Tiny
SMEDLY
  • MEMBER
It only has wires to the a and m pins
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Wednesday, January 18th, 2012 AT 11:29 AM
Tiny
WRENCHTECH
  • EXPERT
That's all it needs.
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Wednesday, January 18th, 2012 AT 11:32 AM
Tiny
SMEDLY
  • MEMBER
It has wires only to the a and the m pins
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Wednesday, January 18th, 2012 AT 11:33 AM
Tiny
SMEDLY
  • MEMBER
Should it send codes through the a and m pins then?
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Wednesday, January 18th, 2012 AT 11:43 AM
Tiny
WRENCHTECH
  • EXPERT
It will if you are using the right equipment which I doubt you are. The scan tool has to provide external power because OBD1 links are not powered.
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Wednesday, January 18th, 2012 AT 11:49 AM
Tiny
SMEDLY
  • MEMBER
Was told to use a jumper wire to view codes
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Wednesday, January 18th, 2012 AT 11:57 AM
Tiny
SMEDLY
  • MEMBER
They say to jump the a and b terminals
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Wednesday, January 18th, 2012 AT 12:00 PM
Tiny
WRENCHTECH
  • EXPERT
Not on that one.
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Wednesday, January 18th, 2012 AT 12:00 PM
Tiny
SMEDLY
  • MEMBER
What do I need to read my codes?
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Wednesday, January 18th, 2012 AT 12:06 PM
Tiny
WRENCHTECH
  • EXPERT
A professional scan tool
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Wednesday, January 18th, 2012 AT 12:11 PM

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