Diagnostic trouble code (DTC) information
WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.
Condition
The load signal from the engine control module (ECM) is a pulsed signal (between approximately 0 V and battery voltage) with a variable frequency and pulse ratio (% duty). The frequency increases with engine speed. The pulse ratio increases with load. Diagnostic trouble code (DTC) DSA-222 is stored if the DSA control module registers that the frequency (engine speed) changes too quickly or that the pulse ratio (load) is based on implausible maximum or minimum values from the engine control module (ECM).
Substitute Value
The DSA function is disengaged.
Possible Source
- Signal cable interference.
- Intermittent open-circuit in the signal cable.
- Intermittent short-circuit to supply voltage or ground in the signal cable.
- Contact resistance in the terminals.
Fault symptom[s]
- The DSA warning lamp lights.
- The anti-spin function is not operative while the DSA function is disengaged.