A/C Pressure Cycling Switch

A/C System Circuit Diagram (CJ2 A/C W/Climate Control):

W/CLIMATE CONTROL

A/C System Circuit Diagram (C67 A/C W/Out Climate Control):

W/O CLIMATE CONTROL


The A/C pressure cycling switch, located on the accumulator, is a normally open switch that closes when there is sufficient refrigerant charge (greater than approx. 25 psi). When the A/C control switch is turned "ON" and the pressure cycling switch is closed, a request signal is sent to the PCM, which energizes the A/C compressor clutch.