Troubleshooting Hints - Air Delivery & Temperature Controls

- Check that Heater-A/C Selector Switch and Temperature Control Lever on the Heater-A/C Control Assembly move freely.
- Check for a broken (or partially broken) wire inside of the insulation which could cause system malfunction but prove "GOOD" in a continuity/voltage check with a system disconnected .These circuits may be intermittent or resistive when loaded, and if possible, should be checked by monitoring for a voltage drop with the system operational (under load).
- Check for proper installation of aftermarket electronic equipment which may affect the integrity of other systems (see Troubleshooting Procedures). Diagnostic Aids
- Refer to System Diagnosis.