I have a 2003 4.7HO Overland and recently had an air con problem that I thought just needed a re-gas. However that did not solve the problem. The garage has tested the compressor and also the relay but they have got as far as they can with their software etc. They said that they cannot get a feed TO the relay.
Some cars apparently have a low pressure switch to safe guard the compressor etc but they said the Grand Cherokee does not, they suggested needing the main delaer diagnosic software that they do not have .
Anyone got an ideas before I go to the Jeep Dealer please ?

 

Earlier models Wj had a low pressure switch. 2003 the switch is called a pressure transducer and is mounted on the discharge line next to the condenser.

 

Brilliant , many thanks for that , I will take a look and let the auto electrician know. That should help him hopefully