No Cooled Or Warm Air

Check A/C fuse in fuse/relay panel. Replace fuse if blown. Check wiring for short if fuse blows again.
Check A/C compressor clutch for correct engagement.
Check A/C switch for correct operation.
Check temperature control switch for correct operation.
Check low pressure switch.
Check for slipping compressor drive belt.
Check for faulty compressor or blower motor.