Code P027, Open Throttle Position Switch Signal: Action
PCM turns on MIL. EGR is disabled. Garage shift adapts are maintained at current levels.
NOTE:
Test numbers refer to numbers on diagnostic chart.
- LO fan status light should cycle from ON to OFF to ON when accelerator is depressed and released.
- Checks if fault is with throttle position switch.
- Checks PCM's ability to recognize signal if circuit No. 427 is open.
- Checks if circuit No. 451 is open.