JTAG

Read/Write

industry-standard chip debug interface — JTAG (IEEE 1149.1) is the standard chip debugging/programming interface. Used to read/write ECU flash directly when OBD/bench modes are locked.

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Related terms

BDM (Background Debug Mode)
low-level CPU debug interface Protocol (Read/Write)
specific procedure to access an ECU Bench Flash
reading/writing ECU on the workbench OBD Flash
reading/writing ECU via OBD port (in-car)

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