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z Fuel pump malfunctioning, replace fuel delivery unit. See FUEL DELIVERY UNIT, REMOVING z Check DTC memory: See Diagnostic Trouble Code (DTC) Memory, Checking And Erasing . z Read readiness code: See Readiness Code, Displaying in ENGINE PERFORMANCE. If the DTC memory has been erased or the Engine Control Module separated from the permanent positive, the See Diagnostic Trouble Code (DTC) Memory, Checking And Erasing in ENGINE PERFORMANCE. ELECTRONIC POWER CONTROL (EPC) SYSTEM EPC SYSTEM, FUNCTION With the EPC system the throttle valve is not operated by a cable. There is no mechanical connection between The position of the accelerator is transmitted to the Engine Control Module by two throttle position sensors The position of the accelerator (drivers requirement) is the main input value for the Engine Control Module. The throttle valve is operated over the complete revolution and load range by an electric motor (throttle valve The throttle valve is operated by the throttle valve positioner which is controlled by the Engine Control Module. When the engine is not running and the ignition is switched on the Engine Control Module moves the throttle When the engine is running (under load) the Engine Control Module can open or close the throttle valve This means that the throttle valve can already be completely open even though the accelerator pedal is This also gives vastly improved consumption and exhaust emission levels at certain load conditions. The torque required by the engine can be produced by the Engine Control Module by optimizing the
2003 Volkswagen New Beetle GLS 1998-2004 ENGINE Fuel System - New Beetle, 1.8L (APH, AWV & AWP)
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