Circuit Description

Throttle Position (TP) sensor provides a voltage signal that changes relative to throttle opening. Signal voltage varies from about 0.6 volt at idle to about 4.5 volts at Wide Open Throttle (WOT). TP sensor signal is one of the most important inputs used by VCM for fuel control and most VCM control outputs. DTC will set if TP sensor value does not closely match what VCM predicts TP sensor value should be.

For duplication of DTC, ensure DTC P0122 is not set, no IAC or MAP sensor DTCs are set, engine is running, BARO is not in default, and throttle position is steady.