Chip-Tools

ITDEENBGES

BSL connections for Delphi CRD3.XX and DCM6.1, Motronic M17.8.7, plus a note on the Simos PCR2.1

Connection diagrams for the Delphi CRD3.XX and DCM6.1 ECUs and for the Motronic M17.8.7 used on KTM, Polaris and Bajaj bikes and quads: all of them work in BSL only. At the end, the manual's note on the Simos PCR2.1, which is not read with this tool.

Procedure

1. Identify the ECU and its microcontroller: the Delphi CRD3.XX for Mercedes exists in a TC1793 version and a TC1797 version, with two separate diagrams; the Delphi DCM6.1 TC1797 is the Ford unit; the Motronic M17.8.7 TC1762 is the KTM, Polaris and Bajaj ECU.
2. Open the ECU and take the board out: all three families are listed as "BSL only", so the work is done on board points, not from the vehicle connector.
3. On the Delphi CRD3.XX pick the right diagram according to the microcontroller fitted: the manual gives the TC1793 wiring first and then the TC1797 one, and the points are not the same.
4. Build the loom following the photo on the page: ground, power, data lines and finally the BSL jumper.
5. Connect the AVDI, power the bench and start the ECU Programming Tool; do a full read and save it to file as a backup before programming.
6. If the vehicle has a Simos PCR2.1, stop here: switch to the Abrites software for VAG, which is the intended route for that ECU.

Reference screenshots