Thanks in advance, Dave
99 Escort compressor not engaging (except every once in a while in the morning for a short while.) Checked the CCRM. Pin 21 has voltage, as does pin 22 when the air is off. When I turn it on, pin 22 goes to 0 volts. The info I have says if pin 21 has voltage and pin 22 does not, then the computer has grounded the relay to prevent compressor operation. The computer is sensing an engine performance problem and will have to be diagnosed and repaired for clutch to work. The motor seems to be running fine.I did plugs,wires,fuel filter and fuel injector cleaner.No help. Any ideas what I should look at next?