How to hook up OBD 1 scanner?

Tiny
DAVID CHANDLER FARR
  • MEMBER
  • 1994 DODGE GRAND CARAVAN
  • 3.3L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 95,000 MILES
Where do I hook a obd1 scanner to retrieve transmission fault codes?
Friday, May 9th, 2025 AT 2:26 AM

3 Replies

Tiny
STEVE W.
  • MECHANIC
  • 14,769 POSTS
You will find that vehicle has two ports. The engine controller access is under the hood that looks like the attached image, it's on the left side inner fender. Then there is the main data bus connection that also has the transmission controller on it that one should be under the dash on the left side it also has 6 pins but in 2 parallel lines like the third image.
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Friday, May 9th, 2025 AT 8:00 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 52,273 POSTS
This guide shows how to get the codes:

https://www.2carpros.com/articles/retrieve-trouble-codes-for-chrysler-dodge-plymouth-odb1-1995-and-earlier-car-mini-van-and-light-trucks

Please go over this guide and get back to us.
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Sunday, May 11th, 2025 AT 11:18 AM
Tiny
STEVE W.
  • MECHANIC
  • 14,769 POSTS
Just keep in mind that those codes are only the engine codes, not the transmission codes.
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Monday, May 12th, 2025 AT 2:06 PM

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