Bosch MED17.9.9 - TC1793 | Technical FAQ & Error Solutions

Bosch MED17.9.9 - TC1793

Errors

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Concerns vehicles from

Further Information on Bosch MED17.9.9 - TC1793

About the Control Unit

The Bosch MED17.9.9 is a sophisticated engine management system belonging to the Motronic MED17 family. It is designed for gasoline direct injection (GDI) engines, specifically optimized for the high-efficiency and performance demands of modern turbocharged powerplants. Powered by the Infineon TriCore TC1793 microprocessor, this ECU offers immense computing power to handle complex real-time calculations for fuel delivery, ignition timing, and emission controls. It is a critical component in the Jaguar Land Rover Ingenium engine series, providing the necessary precision for both economy and power.

Common Car Models

Jaguar F-Type (2.0L Turbo)
Jaguar XE / XF (Ingenium Petrol)
Land Rover Discovery Sport
Range Rover Evoque (L538/L551)
Range Rover Velar (P250/P300)
Honda Civic Type R (Market Specific)

Technical Concepts Explained

Direct Injection (MED): A fuel delivery system where gasoline is injected directly into the combustion chamber under high pressure, allowing for better cooling of the cylinder and higher compression ratios.
TriCore TC1793: A 32-bit high-performance microcontroller from Infineon. It features specialized hardware for engine management tasks, including advanced digital signal processing and safety monitoring.
Checksum: A mathematical value used to verify the integrity of the data within the ECU flash memory. If the data is modified (e.g., during tuning) without updating the checksum, the ECU will typically refuse to start the engine.