Computer diagnostics of the M50B20 engine, Bosch DME 3.1 on BMW E34

DME 3.1 (M50B20 non-Vanos) ECU identification dаta: Bosch hardware 0261200400 / software 1267356300, BMW hardware 1726171 / software 173, code 065

ECU Identification

 

DME M3.1 of the M50 engine without VANOS system

 

  • Bosch hardware number: 0261200400
  • Bosch software number: 1267356300
  • BMW hardware number: 1726171
  • BMW software number: 173
  • Check number: 1730154
  • Part number: 1730969
  • Manufacturing code: 065

Stored Fault Codes

 

 73   Vehicle speed sensor signal

 

 

DME 3.1 fault code: 73 - vehicle speed sensor signal

Live Data

 

 67   Engine speed: 760 RPM

 

 92   Ignition advance angle: 7.5° BTDC

 

 114   Injection signal: 0.00 ms

 

 78   Engine temperature: 81 °C

 

 77   Intake air temperature: 35 °C

 

 41   Air flow meter voltage: 2.33 V

 

 93   Load signal: 1.65 ms

 

 12   Throttle position: 0.5 V | idle

 

 

DME 3.1 main parameters: RPM 760, ignition 7.5°, injection 0.00 ms, engine temp 81°C, AFM voltage 2.33V

 

 

 91   Lambda mixture control: active

 

 70   Lambda sensor voltage: 0.08 V

 

 36   Fuel tank ventilation: OFF

 

 26   Supply voltage: 14.0 V

 

 73   Vehicle speed: 0 km/h

 

 

DME 3.1 system states: lambda control active (voltage 0.08V), tank ventilation off, supply 14.0V

 

 

 65   Transmission selector position: P/N

 

 64   Ignition timing intervention: not active

 

 85   A/C compressor: OFF

 

 86   A/C switch: not activated

 

 

DME 3.1 input signals: selector position P/N, ignition intervention inactive, A/C and compressor off