Bosch ME7.1

The ECU appears to use two 16bit Infineon B59233-FA (aka SAK-C167CR-4RM) CPUs. Non-volatile code/data is stored on a single 16bit AM29F800BB 44 pin PSOP

Block diagram of the torque based system's control flow:

References

• Andy Whittaker's excellent site
• Me-motronic Engine Management from Amazon.com.uk (ISBN 3-934584-34-9)
• The 2.7-litre V6 Biturbo Design and Function Self-study Programme 198
• A New Approach to Functional and Software Structure for Engine Management Systems - BOSCH ME7
• B59233-FA (aka SAK-C167CR-4RM) Datasheet