The Future of FCA Programming for the Aftermarket World

Matthew Diagnostician Commack, New York Posted   Latest   Edited  

From 2012, only the Fiat branded vehicles required a pass-through device that can communicate on 4 CAN channels. Starting in 2018, all Fiat Chrysler Automobiles (FCA) require a 4 CAN channel pass through device. Now, using J2534 pass-through programmers you will need to sign up and get two subscriptions, one at wiTECH 2.0 aftermarket, and one at Tech Authority. 

The reason for getting two different subscriptions is that you need one to login and get access to the wiTECH application, and one to access the vehicle and program a module from Tech Authority. The module software comes from Tech Authority. When using wiTECH 2.0 aftermarket, it turns your J2534 pass through device into a factory FCA scan tool. This is a full solution that can program any module, perform special functions, see all live data, and utilize all vehicle actuations. On 2018 to current FCA vehicles, technicians have been running into issues were their aftermarket scan tools can’t even erase DTCs, due to their scan tool not utilizing 4 CAN channels of communication. The old J2534 Chrysler application is getting phased out slowly, and everything is going to wiTECH 2.0 aftermarket. 

I Just want to give everyone a heads up on what is the inevitable future when trying to diagnose and how to diagnose these newer vehicles from FCA. Also, it takes up to 24 hours for wiTECH to approve your pass-through device and your PC. Keep this in mind when scheduling your programming event.

Chris Technician
Bryans Road, Maryland
Chris Default

Does FCA have to approve you pass-through device and PC every time or just once? Thanks for the info Chris

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Matthew Diagnostician
Commack, New York
Matthew Default

one time only once your j2534 device is approved. you just login and pay for a subscription to witech 2.0 aftermarket and tech authority​.​com

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Geoff Diagnostician
Lahaina, Hawaii
Geoff Default

Have you compiled a list of specific J-2534 devices that actually work vs. don't work?

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Chris Technical Support Specialist
Commack, New York
Chris Default

Its my understanding the CarDaq+3 is supported as well as the snapon branded clone. I do not know for sure which others.,

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Jaxon Technical Support Specialist
Stafford Heights, Australia
Jaxon Default

Good morning Matthew, Could you define "4 CAN channel" please.

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Thomas Owner/Technician
Rudyard, Michigan
Thomas Default

The way I understand it, pins 6 and 14 are the ‘diagnostic can’ lines connected to the secure gateway module. There is another pair of CAN lines in the connector to do the real work on.

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