M5.2.1 - Overview - 5-Series, 7-Series

• M5.2.1
  • Notes
  • Purpose Of The System
  • Features Of M5.2.1
  • System Components: Inputs - Processing - Outputs
  • IGNITION COIL POWER SUPPLY (Unloader) RELAY
  • Shrouded Fuel Injector Air Control (5.4L - M73)
  • Operation
  • Battery Charge Logic
  • Evaporative Fuel System Pressure Leak Diagnosis
  • LDP-Purge System Integration
  • LDP Operation
  • ORVR FUNCTION (On-board Refueling Vapor Recovery)
  • EWS III (3.3)
  • Rolling Code Operation
  • Engine Starting Procedure
  • Service Information
  • IKE Modification - Can Bus Additions
  • M5.2.1 For 1999 My M73 TU
    • Notes
    • M73 TU ECM Relays
    • M73 TU Air Shrouded Fuel Injectors
    • Auxiliary Fan Control
    • Secondary Air Injection System
    • Electrically Heated Thermostat
    • ECM Control
    • M73 TU Exhaust System
    • Electric Catalytic Converter (E-CAT) Assemblies
    • E-CAT Control Function
    • Criteria For E-CAT Heating Coil Activation
    • Diagnosis