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Home >> Volvo >> 2004 >> S40 LSE >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Dynamic Stability Assist (DSA) & Electronic Control Module (ECM) Diagnostic Trouble Codes (644 Body) >> DSA-223: Engine Control Module (ECM) Initialization. Faulty Signal (B4204T2 CVVT; 2000) >> Diagnostic trouble code (DTC) information
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Diagnostic trouble code (DTC) information

Condition 

Fig 1: Identifying Engine Control Module (ECM) Initialization
GLL111970Courtesy of VOLVO CARS OF NORTH AMERICA.

The DSA control module establishes communication with the engine control module (ECM) when the engine speed exceeds 600 RPM for the first time in the ignition cycle. This informs the engine control module (ECM) that there is a DSA system. The communication between the control modules is via cables for the load signal and the torque limiting signal. The engine control module (ECM) replies to the DSA control module with a special signal. Diagnostic trouble code (DTC) DSA-223 is stored within approximately 3 seconds if the DSA control module registers that the response is missing or deviates from the permitted value.

NOTE: The diagnostic trouble code (DTC) is only stored as long as the ignition is on / the engine is running and the fault is permanent. If the fault disappears (becomes intermittent) the diagnostic trouble code (DTC) will no longer be stored.

Substitute Value 

The DSA function is disengaged.

Possible Source 

Fault symptom[s]