Diagnostic Procedure

WARNING: This page is about a different car, the 2004 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.

BLEND/MODE/RECIRC DOOR OPERATION IMPROPER - DIAGNOSTIC PROCEDURE

TEST	ACTION
1	NOTE: All Actuator Circuit Test fault messages and Overcurrent DTCs must be repaired before diagnosing Calibration fault messages. Turn the ignition on.With the DRBIII(R) in HVAC, System Tests, actuate the Actuator Circuit Test.Does the DRBIII(R) display any Actuator Circuit Test fault messages? Yes --> Return to the symptom list and choose the symptom(s). Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 2
2	NOTE: All Actuator Circuit Test fault messages and Overcurrent DTCs must be repaired before diagnosing Calibration fault messages. Turn the ignition on.With the DRBIII(R), read active HVAC DTCs.Does the DRBIII(R) display any active HVAC DTCs? Yes --> Return to the symptom list and choose the symptom(s). Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 3
3	NOTE: All Actuator Circuit Test fault messages and Overcurrent DTCs must be repaired before diagnosing Calibration fault messages. Turn the ignition on.With the DRBIII(R) in HVAC, System Tests, actuate the HVAC Door Recalibration Test.Does the DRBIII(R) display any HVAC Door Recalibration fault messages? Yes --> Return to the symptom list and choose the symptom(s). Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 4
4	Which door did customer ID as faulty? Mode Door Go To 5 Blend Door Go To 6 Recirculation Door Go To 7
5	Start the engine. Turn the blower control to the high speed position. Turn the mode select control to each door position for a minimum of 30 seconds and check for airflow from the corresponding vents. Does air flow from the correct vents for each door position? Yes --> Test Complete. No --> Remove door actuator from A/C-Heater Housing Assy. By hand, attempt to rotate the door actuator in both directions. Also, inspect for disconnected, missing, or broken door actuator linkage. Repair as necessary in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 .
6	Start the engine. Turn the blower control to the high speed position. Turn the mode select control to the panel position. Turn the blend control to the full hot position. Turn the blend control to the full cold position, in 25% increments, while checking for a change in airflow air temperature coming from the panel vents. Does airflow air temp change at driver & pass panel vents with respect to position of blend control? Yes --> Test Complete. No --> Remove door actuator from A/C-Heater Housing Assy. By hand, attempt to rotate the door actuator in both directions. Also, inspect for disconnected, missing, or broken door actuator linkage. Repair as necessary in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 .
7	Start the engine. Turn the blower control to the high speed position. Turn the mode select control to the panel position. Turn the mode select control to the MAX panel position. The sound of the air flowing through the ducts should get louder as the recirculation door opens to bring in recirc air. Does the sound of the airflow get louder after turning the control to the MAX panel position? Yes --> Test Complete. No --> Remove door actuator from A/C-Heater Housing Assy. By hand, attempt to rotate the door actuator in both directions. Also, inspect for disconnected, missing, or broken door actuator linkage. Repair as necessary in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 .