DME M1.2 (55 Pin Control Module)

The M1.2 system's of the M5 and 750iL vehicles are similar in function but have unique variations.

QUICK VISUAL IDENTIFIERS:

55 Pin CM:

Hot Wire Air Mass Sensor:

Distributor Ignition:

SYSTEM FEATURES:
- Power Supply Control (ECM Main Relay)
- Semi-Sequential Fuel Injection
- Fuel Pump Relay Control
- Cold Start Enrichment control
- O2 Sensor Heater Relay Control
- Ignition Timing Control
- Purge Valve Control
- Output of Ti, TD and TR signals
- AC compressor cutout control
- EML/ASC Compatible
- "Hot wire" Air Mass Metering
- Air Mass Sensor hot wire cleaning
- Air Pump Relay Control (M5 only!)
- Substitute operating values employed if specific input signals become impaired.
- Fault monitoring with defect memory
- DIS/MoDiC Communication for Diagnosis and Variant Coding

ADAPTIVE SYSTEM FEATURES:
- Adaptive ms injection time influenced by O2 Sensor Signal. (Stored in memory)
- Adaptive Idle Speed Control