The (often referred to as PSA Interface Checker 1.9.4.3 or newer builds) is a lightweight Windows utility designed to test and validate communication between a diagnostic interface (VCI – Vehicle Communication Interface) and a PC running PSA diagnostics software like DiagBox or PP2000 .
Before flashing your device, ensure you have a "full chip" clone; attempting to flash a "lite" version can permanently damage it.
Without this little tool, many diagnostic sessions would end before they began. It ensures that whether you have an original tool or a common "clone," your computer can see the hardware and start reading those elusive fault codes. Psa Interface Checker Install - Google Docs 👩💻 Psa Interface Checker Install - Google Drive. Google Docs PSA Interface Checker and Lexia Version - French Car Forum psa interface checker download link
Do not update the interface through official internet prompts
Checks if the device is a Revision B or Revision C . Revision C is typically required for full compatibility with newer versions of Diagbox (v7.xx and higher). The (often referred to as PSA Interface Checker 1
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Different versions of Diagbox require corresponding VCI firmware versions to function correctly. Diagbox Version Recommended Firmware Version v4.3.2 / v4.3.3 Stable for older vehicles up to 2015. Diagbox v8.xx Standard firmware for updated v8 packages. Diagbox v9.xx+ v4.3.7 / v4.3.8 Required for modern vehicles and offline VM packages. The Full Chip vs. Lite Chip Difference It ensures that whether you have an original
: You run the PSA Interface Checker.exe . With a click of the "Activate" button, the tool searches for your device.