Park Avenue V6-231 3.8L VIN L SFI (1993)
A/C Signal: Description and Operation
A/C Pressure Cycling Switch
A/C Control Circuit Diagram (Electronic And Dual Zone A/C)
ELECTRONIC AND DUAL ZONE A/C
A/C Control Circuit Diagram (Manual A/C)
MANUAL A/C
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.
