GODIAG GT100 with GODIAG CAS4 CAS4+ Test Platform can not only perform key programming (add new key and all keys lost), but also synchronize test and troubleshooting. This post will share the guide to use it to test whether the programmed key synchronizes with CAS4/CAS4+ module before installing the module back to the car. All devices required: GODIAG GT100 OBD2 Break Out Box ECU Connector GODIAG CAS4 CAS4+ Programming Test Platform CAS4 or CAS4 module BMW Key Connection: Firstly, connect GODIAG CAS4 Test Platform with CAS4/CAS4+ module Next, plug CAS4 CAS4+ Test Platform connector to GODIAG GT100 directly Then fasten the screw of test platform Finally, supply power to GODIAG GT100, and turn on “POWER” and “12 V (30)” button Main operation steps: 1.When the key synchronizes with CAS4 CAS4+: Plug the key into the coil of GODIAG CAS4 Test Platform Then the CANL, BAT+, CHAS GND, SIG GND and CANH indicators will be on But the CANL and CAN...