RAM 2500 Truck 2WD V10-8.0L VIN W (2003)
Heater Core Case: All Technical Service Bulletins
A/C - Lack of Air from Floor Vents
NUMBER: 24-004-03
GROUP: Heating & A/C
DATE: June 13, 2003
SUBJECT:
Defrost Door Inoperative
OVERVIEW:
This bulletin involves replacing the defrost door and lower half of the heater, A/C (HVAC) housing.
MODELS:
2003
(DR)
Ram Truck
SYMPTOM/CONDITION:
The defrost door may break at the pivot shaft causing inadequate travel. The system may not completely close causing a lack of air discharge out the
floor vents and full discharge from the defrost outlet. This may be caused by a broken actuator stop on the heater A/C (HVAC) housing.
DIAGNOSIS:
If the vehicle exhibits the condition, perform the Repair Procedure.
PARTS REQUIRED:
EQUIPMENT REQUIRED:
REPAIR PROCEDURE:
WARNING:
ON VEHICLES EQUIPPED WITH AIRBAGS, DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL,
STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISOLATE THE
BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE AIRBAG SYSTEM CAPACITOR TO DISCHARGE
BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE AIRBAG SYSTEM.
FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN AN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE
PERSONAL INJURY.
NOTE:
THE FOLLOWING PROCEDURES ARE OUTLINED IN DETAIL IN THE 2003 RAM TRUCK SERVICE MANUAL, PUBLICATION
NUMBER 81-370-03059. IF YOU ARE NOT FAMILIAR WITH THE PROCEDURES, REFER TO THE SERVICE MANUAL FOR
ADDITIONAL INFORMATION.
1.
Disconnect and isolate the battery negative cable.
2.
Drain the engine cooling system.
3.
Recover the refrigerant from the refrigerant system
4.
Disconnect the liquid refrigerant line fitting from the evaporator inlet tube.
