Delphi-Common Rail System – EEC V powertrain control module PCM Analog input signals

Analog input signals can have any voltage value within a given range. Examples of analog input signals include:

• IAT (Intake Air Temperature),
• MAP,
• ECT (Engine Coolant Temperature).

As the microprocessor of the PCM can only process digital signals, the analog input signals must first be converted. This is performed internally in the PCM in an analog-to-digital converter (A/D converter).