VIDEO

Informace

Audi

Audi P1543

See the basic definition of a diagnostic error. This will help you to clarify the main causes of the fault code. You will understand the program of the control unit
Basic DTC analysis according to OBD2 protocol standard.

OBD2 or On-Board Diagnostics displays messages for basic group styles. More comprehensible code composition has been standard since 2000. The DTC code consists of five characters and its composition will be shown in this video

Insight into programming

The basic unit for the operation of any computer is the bit. Logic 0 and 1 are expressed by a single bit. Diagnostics The error code is composed of 16 bits. The first two bits define one of the four basic circuits. The video will show you a comprehensive overview of the composition of the error report

A diagnostically understandable description of the Diagnostic Trouble Code

Audi P1543

Basic error definition

Throttle Actuation Potentiometer Signal Too Low

Cause of DTC

Engine started, battery voltage must be at least 11.5v, all electrical components must be off, parking brake must be engaged (to keep daytime driving lights off), automatic transmission selector must be in park, the exhaust system must be properly sealed between the catalytic converter and the cylinder head, coolant temperature must be at least 80 degrees Celsius, and the ground between the engine and the chassis must be well connected. The signal from the Throttle Position Valve Module to the ECM detected was erratic, non existent or unreliable. Note: If the complete throttle valve control module is current-less (e. g. connector disconnected) the throttle valve moves into a particular, specified mechanical position, which signals an increased idle speed with an engine at operating temperature. If only the Throttle Position (TP) actuator –V60- is current-less, the throttle valve also moves into the specified mechanical position (emergency running gap), however, since Closed Throttle Position (CTP) switch –F60- can still be recognized, an almost normal idle RPM is reached via the respective ignition angle retardation. If the Engine Control Module (ECM) detects a malfunction at Throttle Position (TP) sensor –G69-, Throttle Position (TP) actuator –V60- is switched current-less by the Engine Control Module (ECM) and the throttle valve moves into the specified mechanical position (emergency running gap) again. Note: Terminal assignment at throttle control module is different in vehicles with and without cruise control. Characteristic: Steering column switch with operating module for cruise control.