Circuit Description

Throttle Position (TP) sensor is a potentiometer. Sensor is mounted on side of throttle body. Sensor provides a voltage signal that changes relative to throttle blade angle. This signal voltage is one of the most important used by ECM. Sensor has a signal circuit, ground circuit and a 5-volt reference circuit. Signal circuit is increased to 5 volts within ECM. When ECM senses a signal voltage outside normal operating range of sensor, this DTC will set.

Conditions required to set DTC are:

• Throttle angle is greater than 96 percent or less than 3.9 percent.
• Condition is met for at least 50 milliseconds.
• While cranking engine, previous conditions are met for at least 2 seconds.