Test 17D - Inoperative Blend Door

WARNING: This page is about a different car, the 1994 Eagle Vision, 1994 Dodge Intrepid, 1994 Chrysler New Yorker, 1994 Chrysler LHS, and 1994 Chrysler Concorde. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Perform TEST 17A before proceeding with this test.

Using DRB, calibrate ATC doors. Using external DVOM, backprobe Dark Blue/Red wire at 10-pin HVAC connector, located near plenum. If voltage is not higher than 10 volts all the time, go to next step. If voltage remains above 10 volts, repair short to voltage on Dark Blue/Red wire, and replace BCM. Perform VERIFICATION TEST.
Observe voltmeter while rotating temperature control knob from cold to hot position. If voltage remains less than 10 volts, go to next step. If voltage increases to above 10 volts, inspect blend door for free movement. If door is okay, replace blend door actuator. Perform VERIFICATION TEST.
Using external DVOM, backprobe Black BCM connector cavity No. 20 (Dark Blue/Red wire). BCM is located above right kick panel. Observe voltmeter while operating temperature control knob through its full range. If voltage remains less than 10 volts, go to next step. If voltage increases to above 10 volts, repair open Dark Blue/Red wire between 10-pin connector and Black BCM connector. Perform VERIFICATION TEST.
Turn ignition off. Unplug Black BCM connector. Unplug 10-pin HVAC connector. With DRB in ohmmeter mode, probe Black BCM connector cavity No. 20 (Dark Blue/Red wire). If resistance is less than 5 ohms, repair short to ground on Dark Blue/Red wire, replace BCM, and perform VERIFICATION TEST. If resistance is not less than 5 ohms, replace BCM and perform VERIFICATION TEST.