Recirc Door Output Shorted To Ground

WARNING: This page is about a different car, the 2002 Dodge Intrepid, 2002 Chrysler Intrepid, 2002 Chrysler Concorde, and 2002 Chrysler 300M. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

NOTE: After repair or replacement is completed, calibration must be performed. See AUTOMATIC A/C-HEATER SYSTEMS - CONCORDE, INTREPID & 300M article in HVAC.

Monitored & Set Condition

When Monitored: Whenever the BCM attempts to move one of the HVAC actuators.
Set Condition: When the BCM detects one or more of the following outputs shorted to ground: mode door driver, blend door driver, recirculation door driver or the common door driver.

Possible Causes:

Recirculation Door Driver Circuit Short To Ground
Body Control Module

Testing

Turn all lights off. Close the driver door latch to turn courtesy lights off. Disconnect the BCM C1 harness connector. See Figure . Measure the resistance between ground and recirculation door driver circuit. If the resistance is 5 ohms or less, repair the recirculation door driver circuit for a short to ground. If the resistance is 5 ohms or more, replace the BCM. See BODY CONTROL MODULE under REMOVAL & INSTALLATION.