The cycle switch not engaging the Compressors clutch
The most likely reason the compressor is not coming on is because you are low on freon. The low pressure switch will keep the compressor from cycling on because damage to your compressor would result. You can jumper across the low presure switch with the engine running and A/C turned on, ( for short time only) this will provide you with question is my compressor clutch good, or am I just low on freon. The AC compressor relay switch may need to be replaced
Either low on freon or the low pressure switch is bad. You are gonna have to put a set of gauges on it. Usually this happens when the freon leaks out of the system. If there is not enough freon in the system, the low pressure switch keeps the compressor from coming on and being burned up.
What kind of car and which switch. There are several that can effect compressor operation.
Try checking the low pressure switch.
Check for a blown fuse in fuse block and also at the top of the compressor Bad switch Bad compressor clutch
The clutch receives it's signal to engage from a pressure switch in the system. If there is insufficient refrigerant in the system the pressure switch will not close resulting in no power at the compressor clutch to make it engage.
I don't think there is a switch inside the cabin for opening bonnet, the lever for manually opening it,is on the left hand side of the passenger footwell
The 1992 Chevrolet Suburban air conditioner compressor relay switch can be found in the fuse box. The air conditioning compressor relay switch will be labeled as such.
Most likely cause is a faulty under bonnet pin switch
there are several causes to the air pump. the first and most obvious is the air pump (compressor) itself. if you do not hear the compressor pumping air or if you do not feel the slight vibration of the compressor when you put your car into drive, then it's probably the compressor that has gone bad. if the compressor is coming on and you do not hear any air leaking, then your problem could be the height adjuster, located on the suspension bags themselves. Bronconvict: another possibility includes the compressor relay switch. This switch controlls the power to the air bag suspension compressor. This switch is known for burning out when the suspension compressor is working too hard. This can also be caused by a bad/corroded GEM module (due to notorious winshield leak). i had to replace "height sensor" on driver side . part was $200.
I have a problem with my dishboard lights and radio lights not coming on. What can I do to get them to come on