System Tests, Relearns, Resets, Initializations and Calibrations

Multi-step procedures to either run a test against a vehicle system, return detailed system information (full vehicle system list), or initiate a multi-step procedure (e.g., running a ABS bleed or power balance test).

Relearns are procedures to establish parameters (ranges) within a module (e.g., setting Idle, Idle Air Volume, etc.).

A Reset includes “resetting” a vehicle Maintenance/Service Indicator or establishing a “0” point calibrations (e.g., setting a seat weight sensor while vehicle is unoccupied).

An initialization is a process to make a vehicle aware of a new repair or component. (e.g., When replacing any BMW or Mini Cooper battery the technician must perform initialization to tell the vehicle’s computer the battery has been replaced).

The action of telling the vehicle’s internal computers to readjust components to specific tolerances (e.g., cameras, headlights, TPMS sensors and other similar technologies).

The interface standard designed by SAE (Society of Automotive Engineers) for vehicle ECU reprogramming. Its purpose is to utilize an API (Application Programming Interface) which would allowing technicians the ability to reprogram ECU’s without the need for a special dealer-only tool. Included is the ability to pass program files (“software update”) to the vehicles ECU.

The process of updating a vehicles ECU similar to performing a “software update”. Reflash requires the J2534 interface.

Reprogramming is similar to reflashing but is not an update to the current “software.”  It is the process technicians perform when a relevant module is replaced.  Most reprograming requires the J2534 interface, but some do not.