Marelli control unit
Marelli MJD 6F3
MJD 6F3 is a Marelli control unit that CARTESIAN recognises from the content of its file, whatever tool read it. It is listed for 7 vehicle brands (Alfa Romeo, Chevrolet, Fiat, Lancia and others). The archive holds original files for it, collected since September 2026.
- Maker
- Marelli
- Vehicle brands
- 7
- Original files
- in the archive
- Checksum
- verified on load, corrected on save
- Last file added
- October 2026
Vehicles
Listed for Alfa Romeo, Chevrolet, Fiat, Lancia, Opel, Suzuki, Vauxhall.
Known vehicles: 1.3 MultiJet / CDTI / DDiS (Fiat, Opel, Suzuki, …).
Most seen in the archive: Fiat Doblo, Fiat Grande Punto, Fiat Punto, Fiat Fiorino, Opel Astra, Ford Ka, Fiat Qubo.
What CARTESIAN does with this unit
Solutions applied in the app for this unit, each checked on the file before it is written:
- DPF and EGR off
- fault codes (DTC) off
- IMMO off
- checksum
Checksum: verified when the file is opened and corrected automatically on every save; a file whose checksum cannot be proven is refused, not guessed.
Back to the original: with the archive's original file a modified unit can be returned to stock, and History keeps the original of every job you process.
Original files in the archive
The archive holds original files of this unit, collected since September 2026 and last added in October 2026. Search them in your account or in the app by hardware or software number, or hand it the file you read and the closest originals are suggested; downloads count against your plan's daily allowance.
| Hardware | Software |
|---|---|
| MJD6F3HW03P | MJD6F3HW03P |
| 51839153 | 3545B192 |
| 51805368 | 3454D166 |
| 51862556 | 3552Z191 |
| 51871694 | 3645G291 |
| 51843361 | 3641PI90 |
| 51846262 | 3546H980 |
| 51862559 | 3545B595 |
| 51862562 | 33457D191 |
| MJD6F3HW03R | 3058D448 |
- Typical file size
- 2,048.00 KB, 2,564.50 KB, 2,560.00 KB
- Fuel
- diesel 100%
- Brands in the archive
- Fiat, Opel, Lancia, Alfa Romeo, Ford, Volkswagen
Related Marelli units
Open a Marelli MJD 6F3 file in CARTESIAN
Download the app, sign in with your e-mail and open the file you read: the unit is recognised from its content and the solutions it supports are listed.