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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
Specification data are reference values and are measured between each terminal and 48 (ECM ground).

EC-RP/SEN-01:

EC-RP/SEN-01 - Connector Views:

WIRING DIAGRAM

M6,E75 Connector Views:

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Step 3:

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Step 9:

DIAGNOSTIC PROCEDURE