Description And Operation: Description
Typical A/C pressure transducer shown in illustration
The A/C pressure transducer is a sensor that measures the pressure of the refrigerant in the high-pressure side of the refrigeration system.
It is installed on a Schrader-type fitting located on the refrigerant discharge or liquid line, depending on engine application.
An O-ring seals the connection between the A/C pressure transducer and the refrigerant line fitting. The transducer is connected to the vehicle electrical system by a three-terminal connector.
The Schrader-type valve in the refrigerant line fitting permits the A/C pressure transducer to be removed or installed without disturbing the refrigerant in the A/C system.
Replacement of the O-ring seal is required when the pressure transducer is replaced. Failure to replace the O-ring seal may result in a refrigerant system leak.