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Home › Saab › 2004 › 9-3 Linear, Automatic › Repair and Diagnosis › Engine Performance › TRIONIC T8 Fuel Control System › Technical Description › Brief description › Description › CDM (740)

CDM (740)

The Combustion Detection Module first processes the ion stream signal from the ignition coils.
Supplies information to the ECM on the combustion quality and any knocking.