ECU Communication Failure via OBDII & Repair

We've experienced some communication issues with certain ECUs over the years.  Jorge noticed a microchip on a T4 (2005 model year) that appeared burned.  He identified this was the chip that manages communication for the ECU via the OBDII port.  

As many of you know, the On Board Diagnostic (OBD) port is how we can read codes and read data from the T4 computer.  The rest of the ECU may be working fine so it will continue to run your car.  The problem lies when you attempt to read and clear an engine code that might be set on your car.

We were able to successfully replace the burned chip and restore the ECU to full operation.  We have a local friend who builds electronics for the defense industry with the know-how and equipment.  We recruited him to assist.  

These ECUs are no longer available new so keep the existing ones operational will be important as we attempt to keep these cars on the road for as long as possible!