TechnicianVision · Knowledge base
Identifying FCA/Stellantis Programming Differences
I-CAR · December 18, 2019 · Chrysler, Dodge, Jeep, RAM, Fiat, Alfa Romeo
Summary
This article explains the FCA/Stellantis PROXI alignment procedure, which is a critical programming process required to allow newly installed modules or electronic control units (ECUs) to communicate with the vehicle. Failure to perform this alignment when replacing modules, such as blind spot sensors, can result in diagnostic trouble codes (DTCs) and system failures.
What to do on the job
Perform a PROXI alignment using a diagnostic scan tool under the Body Control Module (BCM) Miscellaneous Functions menu whenever replacing an FCA/Stellantis ECU or module that requires configuration data alignment.
How to use it
Use this document to justify the labor time and scan tool usage required for PROXI alignment when replacing electronic modules on FCA/Stellantis vehicles. It proves that PROXI alignment is a mandatory OEM programming step distinct from standard calibration, necessary to prevent DTCs and system failures.
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