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Home >> Saab >> 1994 >> 900 S Sedan L4-2290cc 2.3L DOHC >> Repair and Diagnosis >> Relays and Modules >> Relays and Modules - Powertrain Management >> Relays and Modules - Computers and Control Systems >> Engine Control Module >> Description and Operation >> Electronic Control Module(S)
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Electronic Control Module(S)

PURPOSE
The Motronic electronic fuel injection/ignition ECM controls:
^ Fuel Injection
^ Ignition
^ Idle speed
^ Turbocharger boost pressure
^ EVAP System

OPERATION
The ECM uses a microprocessor to convert input signals into the necessary output functions.

The ECM also incorporates on-board diagnostics (OBD) to monitor system operation.

The ECM incorporates "self-learning" (adaptive) functions which allow it to adjust output functions for various operating conditions.

SYSTEM DESCRIPTION
Additional information is available under "SYSTEM DESCRIPTION."