RAM 3500 Truck 4WD V8-5.7L VIN D (2003)
BLEND/MODE/RECIRC DOOR OPERATION IMPROPER--SINGLE-ZONE
POSSIBLE CAUSES
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Check for actuator circuit test fault messages
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Check for active HVAC DTCs
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Check for HVAC door recalibration fault messages
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Mode door actuator(s)/linkage(s)/door(s)
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Blend door actuator/linkage/door
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Recirculation door actuator/linkage/door
Blower Motor Inoperative
Test 1 - 3