Durango RT 4WD V8-5.9L VIN Z LDC (2002)
Expansion Valve: Description and Operation
Rear
REAR EXPANSION VALVE
Vehicles equipped with the optional rear A/C unit have an H-type thermal expansion valve (TXV) located on the rear HVAC unit, behind the
passenger side rear quarter trim panel. It performs the same function as the front expansion valve, to monitor refrigerant temperature and pressure
at the control head and meter the refrigerant entering the evaporator to meet the vehicle cooling requirements.
The rear expansion valve is a factory calibrated unit and cannot be adjusted or repaired. If faulty or damaged, the rear expansion valve unit must
be replaced.