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1994 Pontiac Grand Am OBD1

Tiny
DANJO
  • MEMBER
  • 1994 PONTIAC GRAND AM
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 13,000 MILES
Why can I not access codes, have bought reader and it will not access codes, tryed jumper wire would not read has 1 slot on top an 2 on bottom should jump all 3 together to get it to read, or will it harem the reader or the ecm? Car will start and idle but will not move when you put it in gear, and the check engine light comes on
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Tuesday, March 2nd, 2010 AT 9:02 PM

1 Reply

Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Turn ignition on but DO NO start engine. use jumper wire between terminal "B" and terminal "A" , pic below. light should then flash codes.


https://www.2carpros.com/forum/automotive_pictures/261618_Graphic_367.jpg

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Tuesday, March 2nd, 2010 AT 9:07 PM

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