Circuit Description

Throttle Position (TP) sensor measures amount of throttle opening. Vehicle Control Module (VCM) uses TP sensor information for fuel delivery calculations. TP sensor readings during acceleration are much higher than those during deceleration or idle. Signal voltages vary from about 0.5 volt at idle to about 4.8 volts at wide open throttle.

TP sensor signal is one of the most important inputs used by the VCM for fuel control and for most of the VCM control inputs.

Conditions required to set DTC are:

• No MAP related DTCs are present.
• No TP related DTCs are present.
• No IAC related DTCs are present.
• Engine is running.
• BARO is not at calculated default.
• Change in TP is less than 1.9 percent.