Will Launch Connect

Niall Owner/Technician Stirling, United Kingdom Posted   Latest  

2004 Grand Cherokee 2.7CRD

Using Launch Pro Mini, Jeep software version V33.00, Launch will read ECM fault codes but will not let me see any live data, any data chosen just shows a straight line, tried KOEO and KOEI, tried in TCM all OK, under OBD live data (minimal) is available. If anyone can confirm if this should work. I have a 2006 5.7 here which communicates OK.

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Joel Diagnostician
Soquel, California
Joel Default
   

I have terrible stories about launch data for crysler , is not my first go. The scanner is great but does not work very well on this manufactur, try other scanner.

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Tyler Technician
Olathe, Kansas
Tyler Default
   

I agree with Joel - the Launch software has never worked well for CDJR, in my experience. I had very similar issues connecting to newer Grand Caravan's with V32​.​XX. V33 fixed most of them, but it's still hit or miss...

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David Owner/Technician
Kitchener, Ontario
David Default
 

Hi I have used Version 32.30 on a 2008 Jeep Grand Cherokee diesel and had data and output controls. So I would think it should but understand its not a 2004.

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Joel Diagnostician
Soquel, California
Joel Default
 

I was chasing my tail on 2003 dodge ram 2500 diesel , it was crank no start conditions , the data on the scanner show 7 volts on the pid . For pcm so I had a charger connected o. The vehicle I am specting about 14 v. So I decide check power and ground all where there at 14 volt , good power and ground. So before replacing the Ecm I wanted to try another scanner , when I connected the snap on I…

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David Owner/Technician
Kitchener, Ontario
David Default
 

That does make for a frustrating situation. When in doubt it certainly is always wise to grab another tool and to verify the actual output or input of the circuit at the module. The launch is not my first grab tool for a few reasons.

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Joel Diagnostician
Soquel, California
Joel Default
 

I have been taking the launch at first step very good scanner ,but when something does no make sense I stop there and grab the verus . When I want to graph data for sure nothing better than snap on

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Hollis Technician
Boulder, Colorado
Hollis Default
 

I had a similar experience recently due to a poor ECM ground. Using an OTC Smart BOB (Breakout Box) with pinout LED's connected between the DLC and my scanner, I noticed that the LED illumination was dim, that was my clue.

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Niall Owner/Technician
Stirling, United Kingdom
Niall Resolution
 

Thanks to all replies, I have a contact with an old Snap-On scanner not sure which one, will try it when the Jeep comes back in.

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