A/C Pressure Switch

The A/C pressure switch consists of a high-low pressure switch (A/C pressure switch A) and a middle pressure switch (A/C pressure switch B).

• High-Low pressure switch

  If the refrigerant pressure becomes too high (due to blockage or lack of airflow at the A/C condenser), or too low (due to leakage), the A/C pressure switch stops the A/C request a signal to the PCM and the A/C compressor stops operating.

  Fig 1: Identifying High-Low Pressure Switch Dimensions

  Courtesy of AMERICAN HONDA MOTOR CO., INC.
• Middle pressure switch

  If the refrigerant pressure goes above or below 1,520 kPa (15.5 kgf/cm² , 220 psi), the A/C pressure switch opens or closes to signal the PCM to change the speed of the A/C condenser fan and radiator fan (high-low).

  Fig 2: Identifying Middle Pressure Switch Dimensions

  Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 3: Identifying Climate Control Door Positions (1 Of 2)

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 4: Identifying Climate Control Door Positions (2 Of 2)

Courtesy of AMERICAN HONDA MOTOR CO., INC.