The A/C pressure transducer is a 3 wire sensor. The PCM applies 5 volts to the A/C pressure transducer.
The ground for the A/C pressure transducer is provided by the PCM. The output signal from the A/C pressure transducer changes depending on the pressure of the refrigerant.
The A/C pressure transducer sends the voltage signal to the PCM to indicate the A/C pressure.
IDS: ACP_V