A/C Pressure Sensor

WARNING: This page is about a different car, the 2011 Honda Pilot, 2010 Honda Pilot, and 2009 Honda Pilot. However, it is still accessible from the selected car via links, so may be relevant.

The A/C pressure sensor converts A/C pressure into electrical signals to the PCM.

NOTE: The pressures can be monitored using the HDS PGM-FI Data List.

Fig 1: Identifying A/C Pressure Sensor Unit

Courtesy of AMERICAN HONDA MOTOR CO., INC.

The response of the A/C pressure sensor is shown in the graph below.

NOTE: When the refrigerant is below 196 kPa (2.0 kgf/cm² , 28 psi) or above 3,140 kPa (32 kgf/cm² , 455 psi), the PCM turns the compressor relay off to protect the A/C compressor.

Fig 2: Identifying A/C Pressure Sensor Output Voltage Graph

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 3: Identifying A/C Pressure Sensor Connector

Courtesy of AMERICAN HONDA MOTOR CO., INC.