Dodge 2001 Ram 1500 Owner's Manual page 2734

BR/BE
HEATING & AIR CONDITIONING (Continued)
Condition
LOW SIDE PRESSURE
IS NORMAL OR
SLIGHTLY HIGH, AND
HIGH SIDE PRESSURE
IS TOO HIGH.
LOW SIDE PRESSURE
IS TOO HIGH, AND
HIGH SIDE PRESSURE
IS TOO LOW.
LOW SIDE PRESSURE
IS TOO LOW, AND HIGH
SIDE PRESSURE IS
TOO HIGH.
A/C Diagnosis
Possible Causes
1. Condenser air flow
restricted.
2. Inoperative cooling
fan.
3. Refrigerant system
overcharged.
4. Air in the refrigerant
system.
5. Engine overheating.
1. Accessory drive belt
slipping.
2. A/C orifice tube not
installed.
3. Faulty a/c compressor.
1. Restricted refrigerant
flow through the
refrigerant lines.
2. Restricted refrigerant
flow through the a/c
orifice tube.
3. Restricted refrigerant
flow through the a/c
condenser.
HEATING & AIR CONDITIONING
1. Check the condenser for damaged fins, foreign objects
obstructing air flow through the condenser fins, and
missing or improperly installed air seals. Refer to Cooling
for more information on air seals. Clean, repair, or replace
components as required.
2. Refer to Cooling for more information. Test the cooling
fan and replace, if required.
3. (Refer to Plumbing/Standard Procedure - Refrigerant
System Charge) in this group. Recover the refrigerant
from the refrigerant system. Charge the refrigerant
system to the proper level, if required.
4. (Refer to Plumbing/Diagnosis and Testing - Refrigerant
System Leaks) in this group. Test the refrigerant system
for leaks. Repair, evacuate and charge the refrigerant
system, if required.
5. Refer to Cooling for more information. Test the cooling
system and repair, if required.
1. Refer to Cooling for more information. Inspect the
accessory drive belt condition and tension. Tighten or
replace the accessory drive belt, if required.
2. (Refer to Plumbing/A/C Orifice Tube/Diagnosis and
Testing) in this group. Replace the liquid line, if required.
3. (Refer to Plumbing/A/C Compressor/ Removal/
Installation) in this group. Replace the compressor, if
required.
1. (Refer to Plumbing/Caution - Refrigerant Hoses/Lines/
Tubes Precautions) in this group. Inspect the refrigerant
lines for kinks, tight bends or improper routing. Correct
the routing or replace the refrigerant line, if required.
2. (Refer to Plumbing/A/C Orifice Tube/Diagnosis and
Testing) in this group. Replace the liquid line, if required.
3. (Refer to Plumbing/A/C Condenser/ Removal/
Installation) in this group. Replace the restricted a/c
condenser, if required.
Correction
24 - 5