Dodge Ram 2004 Service Manual page 418

HEATING & A/C
*BLEND/MODE/RECIRC DOOR OPERATION IMPROPER -- DUAL-ZONE
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Continued
TEST
7 Start the engine.
Turn the blower control to the high speed position.
Turn the mode control to the panel position.
Move the driver blend control to the full hot position.
Move the driver blend control to the full cold position, in 25% increments, while
checking for a change in airflow air temperature coming from the driver's panel
vents.
Does the airflow air temperature change with respect to the position of the blend
control.
Yes → Test Complete.
→ Remove door actuator from A/C-Heater Housing Assy. By hand,
No
8 Start the engine.
Turn the blower control to the high speed position.
Press the MAX control off (LED not Illuminated).
Press the MAX control on (LED Illuminated). The sound of the air flowing through
the ducts should get louder as the recirculation door opens to bring in recirc air.
Does the sound of the airflow get louder after pressing the MAX control on?
Yes → Test Complete.
→ Remove door actuator from A/C-Heater Housing Assy. By hand,
No
ACTION
attempt to rotate the door actuator in both directions. Also,
inspect for disconnected, missing, or broken door actuator link-
age. Repair as necessary in accordance with the Service Informa-
tion.
Perform BODY VERIFICATION TEST - VER 1.
attempt to rotate the door actuator in both directions. Also,
inspect for disconnected, missing, or broken door actuator link-
age. Repair as necessary in accordance with the Service Informa-
tion.
Perform BODY VERIFICATION TEST - VER 1.
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APPLICABILITY
All
All