Drivers And Passengers Side Vent Temperatures Vary By More Than 20 F (11 C) (Without A/C)

Driver's and passenger's side vent temperatures vary by more than 20 �F (11 �C)

Diagnostic Procedure:

1. Probable cause: The recirculation control door or the air mix door is malfunctioning

2. Do the following troubleshooting:

3. Recirculation control motor circuit troubleshooting Recirculation Control Motor Circuit Troubleshooting (Without A/C)

4. Air mix control motor test Air Mix Control Motor Test

Also check for:

- Control panel DTCs How To Troubleshoot the Heating System (Without A/C)
- Poor or loose connections at the terminals