Troubleshooting Hints - Blower Controls

1. Check the RR HVAC, FRT HVAC LOW/MED BLOWER, and FRT HVAC HI BLOWER Fuses in the fuse block for an open.
2. Make sure G200 and G401 are clean and tight.
3. If the Heater-A/C Control is completely inoperative, check for poor connections at Heater-A/C Control connector.
^ 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 (Refer to General Troubleshooting Procedures). Diagnostic Aids
^ Refer to System Diagnosis.