K-TAG Master interface and connector views. Image supplied by the contributor; permission confirmed by the contributor. Original photographer and licence terms not specified.
K-TAG is Alientech’s earlier direct ECU programming device. The supplier describes supported JTAG, BDM/Nexus and bootloader communication families, with application-specific protocols selected in K-Suite. It is distinct from the OBD-focused KESSv2.
Connections and backups
Depending on the ECU and protocol, work may require access to the circuit board or a service-mode connector. Memory access and backup contents vary; consult the exact protocol manual, supported list and wiring instructions. Master and Slave versions were offered.
Sources and photographs
Chiptuningshop: K-TAG, illustrated guide; Alientech: example K-Suite K-TAG and KESSv2 TCU support.