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Bosch MED17.3.x, ME17.8.31 and ME17.8.32 (Alfa Romeo, Maserati, Ferrari, Aston Martin, McLaren): bench and BSL connections

Strumenti Interface Classic Hardware / Connections Advanced ⏱ 30-60 min 6 steps

Connection diagrams for the high-end Bosch petrol ECUs: the MED17.3.x on Alfa Romeo, Lancia, Maserati and Ferrari, the ME17.8.31 on Aston Martin and the ME17.8.32 on McLaren.

Required licences

  • —

Hardware / cables

Procedure

  1. Pin down the designation from the label: MED17.3.1 TC1766 (Alfa Romeo, Lancia), MED17.3.3 TC1793 (Alfa Romeo), MED17.3.4 TC1797 (Maserati), MED17.3.5 TC1793 (Maserati, Alfa Romeo, Ferrari), ME17.8.31 TC1797 (Aston Martin), ME17.8.32 TC1797 (McLaren).
  2. Check the Tricore microcontroller on the board: the MED17.3.3 and MED17.3.5 are TC1793, the MED17.3.4 is TC1797 and the MED17.3.1 is TC1766.
  3. Open the manual page for the entry you identified and build the loom following the drawing, respecting pins and wire colours.
  4. For the MED17.3.4 TC1797 (Maserati) additionally use the "BSL connection" diagram given in the same section for boot mode.
  5. Power the ECU on the bench with a stable supply and connect the AVDI.
  6. Start the read from the software, save the original file and keep a copy of it before any write.

Reference screenshots

Bosch MED17.3.x, ME17.8.31 and ME17.8.32 (Alfa Romeo, Maserati, Ferrari, Aston Martin, McLaren): bench and BSL connections — 1Bosch MED17.3.x, ME17.8.31 and ME17.8.32 (Alfa Romeo, Maserati, Ferrari, Aston Martin, McLaren): bench and BSL connections — 2Bosch MED17.3.x, ME17.8.31 and ME17.8.32 (Alfa Romeo, Maserati, Ferrari, Aston Martin, McLaren): bench and BSL connections — 3Bosch MED17.3.x, ME17.8.31 and ME17.8.32 (Alfa Romeo, Maserati, Ferrari, Aston Martin, McLaren): bench and BSL connections — 4
Source: Manuale ECU Programming Tool, parte 2 di 3, sezioni BOSCH MED17.3.x e ME17.8.3x (p.85, 97-99) · ⏱ estimated time 30-60 min
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