RAM 1500 Truck 4WD V8-5.7L VIN D (2005)
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Door linkage(s) excessively worn, disconnected, missing, broken
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Door actuator(s) broken
Diagnostic Test
1. RUN THE ACTUATOR CIRCUIT TEST
NOTE: Diagnose and repair all Actuator Circuit Test faults before diagnosing Calibration faults.
Turn the ignition on.
With the DRBIII(R) in HVAC, select System Tests and then select Actuator Circuit Test.
Allow the test to run to completion before proceeding.
Q: Does the DRBIII(R) display any Actuator Circuit Test fault messages?
YES: Diagnose and repair the fault(s). Refer to *ACTUATOR CIRCUIT TEST DIAGNOSTICS (SINGLE-ZONE) for the diagnostic test
procedure.
NO: Go To 2
2. CHECK FOR DTCS IN THE A/C HEATER CONTROL
NOTE: Diagnose and repair all Overcurrent DTCs before diagnosing Calibration faults.
With the DRBIII(R), read HVAC DTCs.
Q: Does the DRBIII(R) display any DTCs?
YES: Diagnose and repair the DTC(s).
NO: Go To 3
3. RUN THE HVAC DOOR RECALIBRATION TEST
NOTE: Diagnose and repair all Actuator Circuit Test faults and all Overcurrent DTCs before diagnosing Calibration faults.
With the DRBIII(R) in HVAC, select System Tests and then select HVAC Door Recalibration.
Allow the test to run to completion before proceeding.
Q: Does the DRBIII(R) display any HVAC Door Recalibration fault messages?
YES: Diagnose and repair the fault(s).
NO: Go To 4
4. SELECT THE APPLICABLE TEST TO DIAGNOSE THE DOOR WITH THE REPORTED FAULT
Select the applicable test to diagnose the door with the reported fault
Mode Door Function Test
Go To 5
Blend Door Function Test
Go To 6
Recirculation Door Function Test
Go To 7
5. CHECK MODE DOOR 1 & MODE DOOR 2 FUNCTION
Start the engine.
Turn the Blower control to the high speed position.
NOTE:
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The Mode Door 1 must be at its physical end of travel in the panel position to correctly direct airflow to the Mode Door 2.
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The Mode Door 2 must be at its physical end of travel in the floor-defrost position to correctly direct airflow to the Mode Door 1.
Turn the Mode Select control to each door position for a minimum of 30 seconds and check for airflow from the corresponding vents.
Q: Does air flow from the correct vents for each door position?
