What does Volvo S40 mean by reporting the signal failure of the throttle system?

Common faults of throttle position sensor are: \ x0d \ x0d \ (1) idle switch short circuit or open circuit; \x0d\\x0d\(2) Improper installation and adjustment of the throttle position sensor causes the idle switch not to be closed when the throttle is fully closed, or the idle switch is still closed when the throttle has a certain opening; \x0d\\x0d\(3) The sliding contact of the linear variable resistor is not in good contact, and the output signal of the throttle position sensor is interrupted intermittently during the process of the throttle valve from fully closed to fully open. \x0d\ When the throttle position sensor fails, it will lead to abnormal idle running of the engine (such as excessive or low idle speed, unstable idle speed and easy flameout) or abnormal acceleration of the engine (such as engine jitter during acceleration and slow acceleration response). ), sometimes it will cause the engine to shake intermittently during operation.