Chip-Tools
Chip-Tools
ITDEENBGES

Bosch EDC17C46, C54, C64, C74 and CP74 (Audi, Seat, Skoda, Volkswagen): bench and BSL connections on VAG diesels

Strumenti Interface Classic Hardware / Connections Medium ⏱ 30-60 min 7 steps

A collection of connections for the EDC17 diesel ECUs of the Volkswagen group. The manual separates the designations by microcontroller and, for the EDC17C74, gives two board versions with different diagrams.

Required licences

  • —

Hardware / cables

  • AVDI
⚠ WarningThe EDC17C74 TC1793 exists in two versions with different connections (Version 1 and Version 2): identify the board before you solder, because the wrong version's diagram will not bring the ECU into communication.

Procedure

  1. Identify the designation from the label: EDC17C46 TC1767, EDC17C54 TC1797, EDC17C64 TC1797, EDC17C74 TC1793, or EDC17CP74 TC1793, all fitted to Audi, Seat, Skoda and Volkswagen.
  2. Open the matching manual page and check whether a "BSL connection" section also appears under the entry: for EDC17C46 and EDC17C64 the manual gives the boot mode diagram as well as the base one.
  3. For the EDC17C74, compare the board against the Version 1 and Version 2 drawings and pick the diagram matching the layout in front of you.
  4. Build the loom following the chosen drawing, respecting the pin numbering and the wire colours shown.
  5. If you are working in boot mode, add the BSL connection shown on the page before powering the ECU.
  6. Power the ECU on the bench, connect the AVDI and start the read from the software.
  7. Save the original file you read out and keep it before performing any write on the ECU.

Reference screenshots

Bosch EDC17C46, C54, C64, C74 and CP74 (Audi, Seat, Skoda, Volkswagen): bench and BSL connections on VAG diesels — 1Bosch EDC17C46, C54, C64, C74 and CP74 (Audi, Seat, Skoda, Volkswagen): bench and BSL connections on VAG diesels — 2Bosch EDC17C46, C54, C64, C74 and CP74 (Audi, Seat, Skoda, Volkswagen): bench and BSL connections on VAG diesels — 3Bosch EDC17C46, C54, C64, C74 and CP74 (Audi, Seat, Skoda, Volkswagen): bench and BSL connections on VAG diesels — 4Bosch EDC17C46, C54, C64, C74 and CP74 (Audi, Seat, Skoda, Volkswagen): bench and BSL connections on VAG diesels — 5Bosch EDC17C46, C54, C64, C74 and CP74 (Audi, Seat, Skoda, Volkswagen): bench and BSL connections on VAG diesels — 6
Source: Manuale ECU Programming Tool, parte 2 di 3, sezioni BOSCH EDC17C46/C54/C64/C74 (p.56, 66, 69, 73, 76-77) · ⏱ estimated time 30-60 min
← All Abrites guides

More guides Strumenti