Chrysler Concorde 2004 Service Manual page 351

*BLEND DOOR INOPERATIVE —
TEST
3 Turn the ignition off.
Disconnect the C202 (manual A/C) or C203 (ATC) in-line connector (HVAC) located in
the center of the instrument panel above the accelerator pedal.
Using a voltmeter, connect one lead to the Common Door Driver (cavity 1) and the
other to the Blend Air Door Driver (cavity 3) in the C202/3 in-line connector (I/P
harness side).
With the DRBIII , erase BCM DTC's.
Turn the ignition on and observe the voltmeter. The voltmeter should show approx-
imately 0.1 volt for about 10 seconds and then slowly begin to toggle from about 2
volts to approximately 10 volts for approximately 20 to 30 seconds and then go to 0
volts.
If it does not toggle at all, repeat the procedure 2 or 3 times starting with key off and
clear DTC's then key on. After the ignition is turned on, the BCM will only be active
for about 20 or 30 seconds.
Did the voltmeter toggle and then go to zero?
Yes → If the wiring to the actuator is Okay, replace the Blend Door
→ Go To 4
No
4 Disconnect the C202 (manual A/C) or C203 (ATC) in-line connector (HVAC) located in
the center of the instrument panel above the accelerator pedal.
Disconnect the Body Control Module C1 harness connector.
Measure the resistance of the Common Door Driver circuit between the BCM C1
connector and the HVAC in line connector (cavity 1).
Is the resistance below 5.0 ohms?
Yes → Go To 5
→ Repair the Common Door Driver circuit for an open.
No
5 Disconnect the C202 (manual A/C) or C203 (ATC) in-line connector (HVAC) located in
the center of the instrument panel above the accelerator pedal.
Disconnect the Body Control Module C1 harness connector.
Measure the resistance of the Blend Air Door Driver circuit between the BCM C1
connector and the HVAC in line connector (cavity 3).
Is the resistance below 5.0 ohms?
Yes → Go To 6
→ Repair the Blend Air Door Driver circuit for an open.
No
6 If there are no possible causes remaining, view repair.
Repair
Continued
ACTION
Actuator.
Calibration must be performed after repair/replacement is com-
pleted.
Perform BODY VERIFICATION TEST - VER 1.
Calibration must be performed after repair/replacement is com-
pleted.
Perform BODY VERIFICATION TEST - VER 1.
Calibration must be performed after repair/replacement is com-
pleted.
Perform BODY VERIFICATION TEST - VER 1.
Replace the Body Control Module.
Calibration must be performed after repair/replacement is com-
pleted.
Perform BODY VERIFICATION TEST - VER 1.
335
HEATING & A/C
APPLICABILITY
All
All
All
All