Hi guys, indent style HVAC control. Obd 1.5 only code is post cat o2 heater.
All heat and fan OK.
Compressor clutch will engage only with direct 12v jump. Both high and low side switches currently jumped closed, relays have been swapped.
Visual wire and fuse inspection.
No metering tests done yet, don't know were to start.
Any help to get me going on an organized path would be a great help.
Thanks Jeff.

 

fist step is insuring you have freon in the system and how much pressure there is. Only after that checks out can you move on to electrical.

 

High side and low side both jumped closed with a full charge. Freon is out of the =tion.
Does anyone know the readings I should be getting from the head unit maual switch?