Operation CHARM: Car repair manuals for everyone.
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Troubleshooting Hints

PERFORM BEFORE BEGINNING SYSTEM DIAGNOSIS
1. Check A/C Fuse.
2. Check HEATER Fuse.
3. Check that A/C system is properly charged with refrigerant. Refer to Air Conditioning in Heating and Air Conditioning for proper procedure. Heating and Air Conditioning
4. Check that G102 and G103 are clean and tight.
5. Before component replacement, check for poor connections at related component and in-line harness connector terminal connections.