MODIS Ultra Frequently Asked Questions - Scanner

Connecting to OBD-I vehicles.

Some OBD-I vehicle communication adapters require 12 volts or ground be provided from the vehicle in order to establish proper communication between the vehicle and the scan tool. This is achieved by plugging the Lighter Power Cable and/or the Battery Power Cable into the silver power port on the side of the OBD-I adapter



Adapters that require
external 12 volts
Some OBD-I adapters require ground as well.
Adapters that require external Ground
Chrysler-1 Multi-1 (Connect black lead to vehicle ground)
GM-1 Multi-2 (Connect black lead to vehicle ground)
Ford-1B MB-2A (Connect alligator clip to vehicle ground)


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No Communication Message.

“No Communication” may be the result of using an incorrect or failed Personality Key. If the correct Personality Key is being used and the issue persists, attempt communication using a new Personality Key appropriate for use with the make of the vehicle. For example, on Ford use the K17 key in place of the K20. If communication can be established with the new key the original key has most likely failed and should be replaced.

Please contact your local Snap-on Franchisee or visit to order a replacement key.

Damaged data cables or OBD-II adapters can also cause "No Communication" messages.


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Where are the OBD-I adapters? Part numbers?

The MODIS Ultra compatible OBD-I adapters can be purchased as a set or individually from your local Snap-on Representative or online at

Adapter Kit #1 - EAK0301B08A

Adapter Kit #2 (OBD-I Only) - EAK0288B04B


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Are Personality Keys ever needed with MODIS Ultra?

Yes, the following applications require a Data Cable (Part# EAX0068L01A), OBD-II Key Adapter (Part# EAA0355L46C) and the K-7A Personality Key (Part# EAP0268L65A).


Chrysler Imports Stealth 1994-1996
Chrysler Imports Talon 1995-1998
Mitsubishi 3000GT 1994-1999
Mitsubishi Diamonte 1994-1996
Mitsubishi Eclipse 1995-1996
Mitsubishi Expo 1994-1996
Mitsubishi Galant 1994-1998
Mitsubishi Mirage 1994-1995
Mitsubishi Montero 1994
Chrysler Sebring 1995-2000
Dodge Avenger 1995-2000
Eagle Talon 1995-1999



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How to: Access Fast-Track® Troubleshooter Reference Documents in SureTrack.

The Fast-Track Reference material is available online at the SureTrack website. It is available to our customers 24 hours a day at no charge. A SureTrack membership or subscription is NOT required.

If you are a registered member of SureTrack currently you must logout of SureTrack to search and view Fast-Track reference material. Follow these instructions to view the Fast-Track reference material:

  1. Open the internet browser and navigate to the SureTrack website at
  2. In the Fast-Track Reference Search field enter the reference number provided by the Troubleshooter in the Snap-on scan tool and then hit enter or click on the magnifying glass icon

  3. The correct document will open up in your browser or in a PDF reader/viewer
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