CAN messages for Audi A4 B5 chassis/dash (2001 A4 AWM 1.8t specifically)
Jason requested for 2 v3 ECUs (with 4 IGBT and bridge interface output)
- either v3 internal CAN (120 or 240 Ohm termination ?) =>
- or v3 2nd serial => AIM => AIM to CAN adapter (STM32F103)
- 2nd Serial and AiM->CAN would be preferred (-Jason)
- Yes, the 2 ECU's are made with 2nd serial exactly for this purpose
Termination'
- The adapter Jason has used in initial work has a 60ohm termination, so 120Ohm termination on the canbus adapter
- If it's wrong I can change it and report back here for clarity.
- What is the exact application ? Audi A4 B5 chassis (2001 A4 AWM 1.8t specifically) factory dash
CAN IDs and messages
The needed output is ID 0x280 at 100ms intervals
- with Byte 6 being TPS (0x00 to 0xFA range)
- and Bytes 3 & 4 are RPM (little endian: RPML is byte 3, RPMH is byte 4).
- other bytes are 0 ?
- Correct (They aren't zero in the OEM ECU, but I don't have all the data, and other bytes being zero allows the tachometer to work fine)