PI72: Throttle

Throttle Position Switch. The throttle position switch is part of the ISC motor. When the throttle cam is lifted off the ISC motor, the switch opens. When the throttle cam rests on the ISC motor, the switch closes. This input comes to the PCM at pin "2D8". PI72 should be "LO" with the accelerator pedal released and "HI" with the accelerator pedal depressed.