DME MS42 Service Manual. Diagnostics
M52TU Engine. OBD II Function. Test Procedure (FTP). Check Engine. E39, E46, E52, E53.
BMW MS42 DME Pinout and Service Manual. A complete technical guide for working with the MS42 engine control unit (used on the M52TUB20/M52TUB25/M52TUB28). Indispensable for diagnosing complex electrical problems. Includes:
- A complete pinout diagram of all three ECU connectors.
- DME ground and power supply locations.
- Signal values (voltage, resistance) for key sensors.
- Sensor testing instructions (lambda probes, MAF, crankshaft position).
- Wiring diagrams for fuel injectors, coils, and the Double VANOS system.
Siemens MS42 E46 pinout
Also fits models E39, E46, E52, E53.





