Good day,thanks for Allen from US provides us this case! JDiag Elite II test with 2016 year Cadillac details steps .
1,JDiag Elite II VCI *1, Connect to laptop via WIFI, USB, RJ45 cable, another side connect to Cadillac DLC with iginiton on. Open the JDiag Elite II Upgrade Tool to find the VCI serial No. means everything ready to work.(as below photo shows).
The JDiag Device will read out VIN and produce year information, etc.
Next choose Engine Control Module to read out the details info and live data stream.