Circuit Description

The Throttle Position (TP) sensor is mounted on throttle body assembly. Sensor is equipped with potentiometer with common supply and ground circuits, and independent signal circuits. As throttle opens, signal wire on sensor No. 1 read a higher voltage and voltage in signal wire for sensor No. 2 decreases. DTC will set when signal being received by ECM conflicts with MAF reading.

DTC will set under the following conditions:

• Battery voltage greater than 7 volts.
• TP sensor No. 1 and TP sensor No. 2 readings differ by greater than 6.3 percent for more than 140 milliseconds.
• TP sensor No. 2 reading conflicts with current MAF reading.