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section
M 3
211098/1098S - M.Y. 2007 - edition 00
Injection - ignition system
Throttle Position Sensor (TPS)
The TPS is powered by the ECU to which it sends a signal indicating the throttle position. This information is the indirect measure
of the engine load and is used by the ECU as one of the main parameters for determining the fuel flow rate and spark advance.
Notes
To check this component, use the DDS tester following the instructions given in the paragraph “Guided diagnosis” (Sect. D 5).
It is not possible to change the throttle position sensor as a single component. In the event of a fault with this component, it will
be necessary to replace the entire throttle body assembly (Sect. L 6) and then reset the TPS (Sect. D 5).
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