DME M3.3.1 (88 Pin Control Module)

The introduction of the M50 TU engine in the 1993 model year brought new mechanical features such as VANOS and knock sensor monitoring. The M3.3.1 system provided the additional control and monitoring capabilities for these functions.

QUICK VISUAL IDENTIFIERS:

88 Pin CM (M1.7):

Hot Film Air Mass Sensor:

Individual Ignition Coils:

SYSTEM FEATURES:
- Power Supply Control (ECM Main Relay)
- Full - Sequential Fuel Injection with individual fuel injector shut-off
- Fuel Pump Relay Control
- Gold Start Enrichment control
- O2 Sensor Heater Relay Control
- Direct, Solid State Ignition Timing Control with knock sensor monitoring
- Secondary Ignition Monitoring
- VANOS control
- Output of Ti, TD and DKT signals
- AC compressor relay control
- EGS communication
- ASC system interface
- 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 Adaptive Purge Valve Control