Circuit Description
WARNING: This page is about a different variant/trim than selected.
The powertrain control module (PCM) uses the following readings to calculate the predicted mass air flow (MAF) rate:
- The throttle position (TP)
- The barometric pressure (BARO)
- The intake air temperature (IAT)
- The engine RPM
The PCM compares the predicted MAF value to the actual MAF value, and to the speed density calculation, in order to verify the proper throttle operation.