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Saab
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2005
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9-3 Linear, 2D Convertible, Automatic
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Repair and Diagnosis
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Engine Performance
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TRIONIC T8 Fuel Control System
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Technical description
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Brief description
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Description
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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.