Initial Inspection and Diagnostic Overview

1. Check the HEATER Fuse with a fuse tester.
2. Check the A/C Fuse with a fuse tester.
3. Check that grounds G105 and G202 are clean and tight.
4. Before diagnosing suspected A/C Condenser Fan problems, be sure that the A/C Compressor Clutch engages when the A/C SWITCH is pushed to ON and the BLOWER SPEED SELECTOR SWITCH is in any position but "OFF." If the A/C Compressor Clutch does not engage properly, refer to Heating and Air Conditioning. Heating and Air Conditioning
5. Check that the A/C system has a proper charge of refrigerant. Refer to Heating and Air Conditioning. Heating and Air Conditioning