FixVault
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.