DME M1.7, M42 Applications (88 Pin Control Module)

This system is used on E30 & E36 4 cylinder engine models.

Additional features and functions were introduced to the system through the model years increasing the scope of the system's control.

QUICK VISUAL IDENTIFIERS:

88 Pin CM (M1.7):

Air Flow Meter:

Individual Ignition Coils Per Cylinder:

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
- Direct Ignition Coil Timing Control with ignition knock sensor monitoring
- Purge Valve Control
- Output of Ti, TD and DK signals
- AC compressor relay control
- DISA control (from 1992)
- Transmission range monitoring
- EGS communication
- 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 based on O2 Sensor Signal(s) with memory Adaptive Idle Speed Control