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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> (HVAC Systems (ATC) - Electrical Diagnostics) >> DTC Troubleshooting >> B10AF-Right Blend Door Actuator Performance >> Diagnostic Test

Diagnostic Test

  1. CHECK FOR ACTIVE CONTROL CIRCUIT/PERFORMANCE AND CONTROL CIRCUIT OPEN DTCs 
    1. Turn the ignition on.
    2. With the scan tool, read active HVAC DTCs.

      Does the scan tool display any active: XXXX CONTROL CIRCUIT/PERFORMANCE or XXXX CONTROL CIRCUIT OPEN DTCs?

      Yes 

      • Diagnose and repair the DTCs.

      No 

      • Go to step  2
  2. RUN ACTUATOR CALIBRATION TEST 
    1. With the scan tool, select System Tests and then select Actuator Calibration Test. When the test is complete, select View DTCs.

      Does the scan tool display any DTCs?

      Yes 

      • Diagnose and repair the DTCs. Refer to the DIAGNOSTIC CODE INDEX  for a complete list of all HVAC related symptoms.

      No 

      • Go to step  3
  3. CHECK MODE, BLEND AND RECIRCULATION DOOR OPERATION 
    1. Start the engine.
    2. Set the blower to high speed.
    3. Verify that air flows from the correct vents while setting the Mode control to the Panel position, the Bilvel position, the Floor/Defrost position, and the Defrost position. Then, repeat in the opposite direction.
    4. Set the Mode control to the Panel position.
    5. Set the Driver Blend control to the full cold position.
    6. Set the Passenger Blend control the full cold position.
    7. Verify that the airflow air temperature changes while setting the Driver Blend control to the full hot position. Then, repeat in the opposite direction.
    8. Verify that the airflow air temperature changes while setting the Passenger Blend control to the full hot position. Then, repeat in the opposite direction.
    9. Set the Mode control to any position between Floor and Panel.
    10. Press the Recirc function on. Verify that the sound of the airflow gets louder as the recirculation door opens to bring in recirculated air.
    11. Press the Recirc function off. Verify that the sound of the airflow gets softer as the recirculation door closes to bring in fresh air.

      Does each door operate properly?

      Yes 

      No 

      • Remove the door actuator of the affected door from the A/C Heater Housing Assembly. By hand, attempt to rotate the actuator in both directions. Inspect the A/C Heater Housing for damage, for disconnected, missing, or broken linkage, and for broken or binding doors. Repair as necessary in accordance with the Service Information.
      • Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure
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