S-Type (X200) V8-4.0L (AJ28) (2001)
Compressor Clutch Relay: Description and Operation
Air Conditioning Clutch Relay
This monitor checks to confirm that the A/C control relay is responding to a request from the ECM to switch it on or off. When the entry conditions have
been met the ECM compares the state of the A/C compressor clutch relay to the commanded state. If they do not agree then a timer is started. If at the
end of the period the commanded and actual relay states do not agree then the DTC is flagged.