DME M5.2, (88 Pin Control Module)

Introduced on the 1995 750iL, this was the first system to comply with OBD II.

This system was used on 4, 8 and 12 cylinder engine vehicles.

QUICK VISUAL IDENTIFIERS:

88 Pin CM (M1.7):

Hot Film Air Mass Sensor:

Individual Ignition Coils (M44 & M62 Engines):

Distributor Ignition:

SYSTEM FEATURES:
- Power Supply Control (ECM Main Relay) engines)
- OBD II compliant
- Full - Sequential Fuel Injection with individual fuel injector shut-off
- Direct or Distributor Solid State Ignition Timing Control with knock sensor monitoring
- Fuel Pump Relay Control
- Cold Start Enrichment control
- O2 Sensor Heating Control (PWM)
- Secondary Ignition Monitoring
- Automatic One-touch starting
- MAP Thermostat control (M62)
- Output of Ti, and TD signals
- AC compressor control interface
- CAN bus communication
- Engine cooling fan control (M44)
- Substitute operating values employed if specific input signals become impaired.
- Fault monitoring with defect memory
- DIS/MoDiC Communication for Diagnosis and Programming

ADAPTIVE SYSTEM FEATURES:
- Adaptive ms injection time based on O2 Sensor Signal with memory
- Adaptive Idle Speed Control (M44, M62)
- Adaptive Purge Valve Control