Common applications
- Toyota and Lexus
- Mazda
- Volvo
- Jaguar/Land Rover
- Selected Isuzu and commercial vehicles
ECU / TCU technical guide
Denso ECU File Service
Denso ECU file-service checks for supported diesel and petrol applications, based on exact ECU and file identification.
Denso controllers cover many manufacturer-specific diesel and petrol applications. Naming, memory layout and read methods can vary more than a generic ECU-family label suggests.
Each request is reviewed using the OEM identification, Denso number, original file and read protocol.
Identification data
- Denso part number
- OEM ECU number
- Vehicle and engine
- File size and read coverage
- Tool and protocol
Workshop workflow notes
- Do not identify by file size alone
- Keep the complete original backup
- Provide fault context
- Confirm programming method before writing
Frequently asked questions
Can Denso support be confirmed from the brand alone?
No. Exact ECU identification and file data are required.
Is file size enough to identify a Denso ECU?
No. Different applications can share file sizes, so part numbers and software identifiers are also needed.