Computer diagnostics of the M50B20 engine, Siemens MS40.0 on BMW E36

MS40.0 (M50B20 non-Vanos) ECU identification dаta: Siemens hardware 6577014002f / software 6577015007, generation 000010MS40, date 23/92

ECU Identification

 

MS40.0 Siemens of the M50B20 engine without Vanos system for E34/E36 series

 

  • Siemens hardware number: 6577014002f
  • Siemens software number: 6577015007
  • Generation number: 000010MS40
  • Current number: 0048409
  • Manufacturing date: 23/92
  • BMW hardware number: 1748006
  • Check number: 1738283
  • Part number: 1748210

Stored Fault Codes

 

 53   Lambda sensor heater

 

 

MS40.0 DME fault code: 53 - lambda sensor heater

Live Data

 

 18   Engine speed: 711 RPM

 

 90   Ignition advance angle: 10.1° BTDC

 

 68   Air flow meter signal: 12.5 kg/h

 

 114   Injection signal cylinder #1: 3.7 ms

 

 85   Intake air temperature: 51 °C

 

 81   Engine temperature: 84 °C

 

 53   Lambda sensor heater: 2 %

 

 91   Lambda mixture control: OFF

 

 73   Lambda sensor voltage: 0.09 V

 

 

MS40.0 DME main parameters: RPM 711, ignition 10.1°, air flow 12.5 kg/h, injection 3.7 ms, engine temp 84°C

 

 

 77   Throttle position: 0.64 V | idle | 0° opening angle

 

 97   Knock control system: OFF

 

 98   Acceleration enrichment: OFF

 

 

MS40.0 parameters: throttle position 0.64V (idle), knock control off, acceleration enrichment off

 

 

 111   A/C compressor shut-off: not active

 

 9   A/C compressor: OFF

 

 10   Air conditioning: OFF

 

 14   Ignition timing intervention: OFF

 

 8   Transmission selector position: P or N

 

 

MS40.0 auxiliary systems: A/C off, compressor shut-off inactive, selector position P/N