Tried the Searches, but my Air Conditioning clutch fails to engage from the A/C button on the dash. The little green light comes on, but there is no volts at the connector on the compressor. Fuse checks out OK. If I pull the connector to the compressor off and jumper in 12v direct, the clutch operates as expected. Is there any other stuff I can do or is the problem with the Air Con ECU????