Jumper the connector on the pressure switch on the drier.

If that works you're more than likely out of freon, I've only ever seen like 1 bad pressure switch.

If that doesn't work then you can jump two pins under the klima but I don't know off hand which to two pins those are. That would point to a bad klima or an issue with the compressor or speed sensor.

Can you turn the compressor by hand? If its locked up all attempting to hot wire the clutch will do is throw your belt.

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