NO START AND NO COMMUNICATION WITH SNAP ON MODIS SCANNER

  • Tiny
  • louielewis
  • 1995 Mitsubishi Expo
  • 198,000 miles

I have a no start on my 1995 mitsubishi expo 2.4l.I have fuel and spark.I have an ignition switch that I have to turn on and off a few times before it works but it still turns over.I also have a snap on scanner ( Modis ) with the correct mitsu-1 adapter and the key7 attatchment but I get a no communication everytime I hook it up. It says obd1 under the hood on the emmisions tag but it has an obd II connector under the dash so I am not sure how to check for codes.I am lost. Please help

Wednesday, December 28th, 2011 AT 8:24 PM

8 Answers

  • Tiny
  • rivermikerat
  • Expert
  • 6,155 posts

It sounds as though you have an issue with the ignition switch that needs to be addressed first.

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Wednesday, December 28th, 2011 AT 8:31 PM
  • Tiny
  • rasmataz
  • Member

Check and test the ignition switch, fuel pressure if its within specs and verify the valve and ignition timing-

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Wednesday, December 28th, 2011 AT 8:31 PM
  • Tiny
  • louielewis
  • Member

Would the ignition switch being semi faulty cause the no communication with the scanner? And also a no start? I mean when it turns over it turns over good

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Wednesday, December 28th, 2011 AT 8:48 PM
  • Tiny
  • rivermikerat
  • Expert
  • 6,155 posts

Yes, it could cause the no start condition. The switch may not be sending the signal to power up the ignition primary circuit.

The no communication issue is probably a loose connector pin or broken wire.

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Wednesday, December 28th, 2011 AT 9:02 PM
  • Tiny
  • louielewis
  • Member

Even if when the ignition switch is rolling over and over it is getting park at the plugs

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Wednesday, December 28th, 2011 AT 11:09 PM
  • Tiny
  • rivermikerat
  • Expert
  • 6,155 posts

You have engine turning over and spark, but it's not starting?
Check all fuses and relays.

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Wednesday, December 28th, 2011 AT 11:49 PM
  • Tiny
  • louielewis
  • Member

I checked all fuses and relays

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Thursday, December 29th, 2011 AT 9:32 PM
  • Tiny
  • rivermikerat
  • Expert
  • 6,155 posts

See images. Test continuity on the lines to and from the data connector.

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Thursday, December 29th, 2011 AT 10:12 PM

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