inoperative A/C pressure
transducer.
Test the A/C pressure transducer and tighten
or replace as required.
6. Inoperative evaporator
temperature sensor.
6. See SENSOR-EVAPORATOR
TEMPERATURE . Test the evaporator
temperature sensor and replace as required.
7. Inoperative powertrain
control module (PCM) or
engine control module
(ECM), depending on
engine application.
7. Refer to the proper Diagnostic article for
testing of the PCM or ECM. Test the PCM or
ECM and replace as required.
Normal pressures, but A/C
Performance Test air
temperatures at center panel
outlet are too high.
1. Excessive refrigerant oil
in system.
1. See REFRIGERANT OIL LEVEL .
Recover the refrigerant from the refrigerant
system and inspect the refrigerant oil content.
Restore the refrigerant oil to the proper level
as required.
2. Blend door actuator
improperly installed or
inoperative.
2. See ACTUATOR-BLEND DOOR .
Inspect the actuator for proper operation and
replace as required.
3. Blend-air door
inoperative or sealing
improperly.
3. See HOUSING-HVAC . Inspect the blend-
air door for proper operation and sealing and
correct as required.
The low side pressure is
normal or slightly low, and
the high side pressure is too
low.
1. Low refrigerant system
charge.
1. See REFRIGERANT SYSTEM LEAKS .
Test the refrigerant system for leaks. Repair,
evacuate and charge the refrigerant system as
required.
2. Refrigerant flow through
the A/C accumulator is
restricted.
2. See EVAPORATOR-A/C . Replace the
restricted accumulator as required.
3. Refrigerant flow through
the A/C evaporator is
restricted.
3. See EVAPORATOR-A/C . Replace the
restricted A/C evaporator as required.
4. Inoperative A/C
compressor.
4. See COMPRESSOR-A/C . Replace the
A/C compressor as required.
The low side pressure is
normal or slightly high, and
the high side pressure is too
high.
1. A/C Condenser air flow
restricted.
1. Check the A/C condenser for damaged fins,
foreign objects obstructing air flow through
the condenser fins, and missing or improperly
installed air seals. Clean, repair, or replace
components as required.
2. Inoperative radiator
cooling fan.
2. Test the radiator cooling fan and replace as
required. Refer to Group 7.
3. Refrigerant system
overcharged.
3. See REFRIGERANT SYSTEM
CHARGE . Recover the refrigerant from the
refrigerant system. Charge the refrigerant
system to the proper level as required.
4. Air in the refrigerant
4. See REFRIGERANT SYSTEM LEAKS
2007 Dodge Nitro R/T
2007 HVAC Heating & Air Conditioning - Service Information - Nitro