The Throttle Position Sensor (TPS) is used by the ECU to calculate various engine management parameters used by functions such as idle speed control,acceleration enrichment and motor sport features. It is important that the ECU knows when the throttle is open and closed (or part way in between). The following procedure calibrates the ECU to match the TPS and is for engines using a cable driven throttle:
1.Connect a laptop/notebook PC to the ECU and connect to the ECU using PCLink.
2.Under the Analog Channels menu, ensure that the correct An Volt channel is set to 'TPS (Main)'. Refer to the pin functions section of this manual for details.
3.Under the 'Options' menu, select 'TPS calibration'.
4.Follow the on screen instructions.
5.Select the 'Analog Inputs' tab in the runtime values section of PCLink (lower part of the screen).
6.Ensure the Throttle Position value reads 0% when the throttle is closed and 100% when fully open.
7.Perform a 'Store' by pressing F4.
For engine setups that use Electronic Throttle Control the Accelerator Position Sensor (APS) and Throttle Position Sensor (TPS) need to be calibrated.
For Link Plug-in ECUs see PCLink Help > G4X ECU Tuning Functions > Electronic Throttle Control