Circuit Description

Throttle Position (TP) sensor provides a voltage signal that changes relative to throttle opening. Signal voltage varies from about .5 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 when the following conditions are present:

• Engine is running.
• No MAP sensor DTCs are set.
• No TP sensor DTCs are set.
• No IAC sensor DTCs are set.
• MAP is less than 50 kPa.
• Change in throttle position is less than 2 percent.
• Last throttle position is greater than calculated throttle position based on engine RPM.