Land Rover Discovery: Climate Control - Air Conditioning
COMPONENT LOCATION - VEHICLES WITHOUT AN INTERNAL HEAT EXCHANGER ( IHX )
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- Refrigerant pressure sensor
- Thermostatic eXpansion Valve (TXV)
- Evaporator
- Receiver/Drier
- Condensor
- Air Conditioning (A/C) compressor
- Low pressure line
- High pressure line
- Low pressure servicing connection
- High pressure servicing connection
COMPONENT LOCATION - VEHICLES WITH AN INTERNAL HEAT EXCHANGER ( IHX )
.jpg)
- Refrigerant pressure sensor
- Thermostatic eXpansion Valve (TXV)
- Evaporator
- Receiver/Drier
- Condensor
- Air Conditioning (A/C) compressor
- Low pressure line
- High pressure line
- Low pressure servicing connection
- High pressure servicing connection
Overview
A choice of Air Conditioning (A/C) systems are available with features to enhance the performance for second and third-row seat passengers.
The system is available in two forms, with an optional rear air conditioning unit.
- Manual air conditioning system.
- Two-zone auto system, with separate LCD display controls for driver and front passenger.
- Vehicles with 5+2 seating, an optional auxiliary air conditioning unit
for
third row passengers is available, with controls for temperature and fan
speed.
For additional information, refer to: Auxiliary Climate Control (412-02 Auxiliary Climate Control, Description and Operation).
The rear air conditioning has a child lock function which disables the rear fan speed control switches. This is feature is accessed from the Touch Screen.
The A/C system transfers heat from the passenger compartment to the outside atmosphere to provide the climate control assembly with dehumidified cool air.
The A/C system is a sealed closed-loop system, filled with refrigerant as the heat transfer medium. Refrigerant oil is added to the refrigerant to lubricate the internal components of the A/C compressor:
- R1234yf refrigerant is used in USA and Canada (NAS market); systems with an Internal Heat Exchanger (IHX) installed.
- R134a refrigerant is used in the ROW markets; systems without an Internal Heat Exchanger (IHX).
For additional information, refer to: Specifications (412-01 Climate Control, Specifications).
The compressor is a variable displacement unit, where the displacement (flow of refrigerant) is controlled to match the thermal load of the evaporator. The type of compressor fitted will depend on engine variant, see below.
The operation of the A/C system is controlled by the Automatic Temperature Control Module (ATCM).
For additional information, refer to: Control Components (412-01 Climate Control, Description and Operation).
Climate Control Air
Conditioning Compressor - Ingenium I4 2.0l
Diesel
(G1885406)/ Removal and
InstallationClimate Control - Air
Conditioning / Description
READ NEXT:
Climate Control - Air
Conditioning / Description
DESCRIPTION
The air conditioning system includes the following features:
B-pillar mounted mid-level vents for row 2 passengers
Face-level vents mounted in the C-pillar on vehicles with 5+2 seating,
Climate Control - Air
Conditioning/ Operation
PRINCIPLES OF OPERATION
To accomplish the transfer of heat, the refrigerant is circulated around the
system, where it passes through two pressure/temperature regimes. In each
of the regimes the refrig
SEE MORE:
Interior Lighting / Diagnosis and Testing
PRINCIPLES OF OPERATION
For a detailed description of the Interior Lighting, refer to the relevant
Description and Operation section in the workshop manual. REFER to:
Interior Lighting (417-02 Interior Lighting, Description and Operation).
INSPECTION AND VERIFICATION
CAUTION:
Diagnosis by substituti
Opening the bonnet
Pull the bonnet release lever, located
in the left-side front footwell.
Lift the bonnet safety catch, located
below the centre point of the bonnet,
then raise the bonnet.
CLOSING THE BONNET
Do not drive with the bonnet
retained by the safety catch
alone.
Lower the bonnet until the safety
