Refrigerant Pressure Sensor / Switch: Testing and Inspection

Description
The refrigerant pressure sensor is installed at the liquid tank of the air conditioner system. The sensor uses an electrostatic volume pressure transducer to convert refrigerant pressure to voltage. The voltage signal is sent to ECM, and ECM controls cooling fan system.

ECM Terminals And Reference Value:

EC-RP/SEN-01:

EC-RP/SEN-01 Connector View:

Wiring Diagram

Super Multiple Junction (SMJ) Terminal Arrangement (E75, M6):

Steps 1 - 2:

Steps 3 - 8:

Step 9:

Diagnostic Procedure