Volvo Workshop Manuals
V70R AWD L5-2.3L Turbo VIN 52 B5234T6 (1998)
Powertrain Management > Computers and Control Systems > Relays and Modules - Computers and Control Systems > Engine Control Module > Component Information > Diagrams > Page 3441
Engine Control Module: Description and Operation
The Motronic 4.4 is an Electronic Fuel / Ignition Engine Management System which controls:
^ Fuel Injection
The Engine Control Module (ECM) incorporates microprocessor which receives signals from the various sensors in the car. The micro-processor uses
The Engine Control Module incorporates adaptive functions, which enable it to adjust its computations continuously to suit running conditions.
Efficient engine management maintains low exhaust emissions. Since CO content and idling speed do not require adjustment, service requirement is
The Engine Control Module also incorporates an On-Board Diagnostic (OBD) function. Signals from sensors, and the operation of the Three-Way
Substitute values can be adopted for:
- Engine Coolant Temperature (ECT) Sensor
Faults are recorded in the Engine Control Module memory in the form of Diagnostic Trouble Codes (DTCs). Information can be read-off using the
The Engine Control Module is housed in a ventilated box in the engine compartment.
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