Page 1761 of 3039
All vehicles
Installation
5. CAUTIONS:
Take care not to damage the O-ring seals during
installation.
A new O-ring seal is to be installed.
Torque: 5.3 Nm
6. CAUTIONS:
Take care not to damage the O-ring seals during
installation.
A new O-ring seal is to be installed.
Torque: 3.5 Nm
1. To install, reverse the removal procedure.
Page 1762 of 3039
Published: 11-May-2011
Climate Control - Desiccant Bag V6 3.0L Petrol/V8 5.0L Petrol/V8 S/C 5.0L
Petrol
Removal and Installation
Removal
NOTE: Removal steps in this procedure may contain installation details.
1. WARNING: Make sure to support the vehicle with axle stands.
Raise and support the vehicle.
2. Refer to: Air Conditioning (A/C) System Recovery, Evacuation and Charging (412-00 Climate Control System - General Information, General Procedures).
3. Refer to: Radiator Splash Shield (501-02 Front End Body Panels, Removal and Installation).
4. www.JagDocs.com
Page 1763 of 3039
6.
1. To install, reverse the removal procedure.
Page 1764 of 3039
Electric booster heater retaining screws 1.3 - 11
Page 1765 of 3039
Published: 11-May-2011
Auxiliary Climate Control - Electric Booster Heater - Component Location
Description and Operation
NOTE: LHD (left-hand drive) vehicle shown, RHD (right-hand drive) vehicle similar.
Component Location
Item Description 1 Evaporator 2 Heater core 3 Electric booster heater 4 Heater assembly 5 150 A megafuse
Page 1766 of 3039
Published: 11-May-2011
Auxiliary Climate Control - Electric Booster Heater - System Operation and
Component Description
Description and Operation
Control Diagram
NOTE: A = Hardwired; D = High speed CAN (controller area network) bus; N = Medium speed CAN bus; O = LIN (local interconnect network) bus.
Item Description 1 Battery 2 BJB (battery junction box) 3 CJB (central junction box) 4 Integrated control panel 5 Instrument cluster www.JagDocs.com
Page 1767 of 3039

7 ECT (engine coolant temperature) sensor 8 Ambient temperature sensor 9 Electric booster heater 10 Face/Feet distribution stepper motor 11 RH (right-hand) temperature blend stepper motor 12 LH (left-hand) temperature blend stepper motor 13 Windshield (defrost) distribution stepper motor 14 ATC (automatic temperature control) module 15 150 A megafuse
General System Operation
Operation of the electric booster heater is controlled by the ATC module, which communicates with the micro-controller in the booster heater using the LIN bus. The temperature requested by the ATC module is based on:
The ambient air temperature.
The engine coolant temperature.
The temperatures selected on the integrated control panel.
The blower must be running for the electric booster heater to operate.
If electrical load management is in force, electric booster heater performance is reduced. For additional information, refer to:
Electronic Engine Controls (303-14A, Description and Operation),
Electronic Engine Controls (303-14B Electronic Engine Controls - V6 3.0L Petrol, Description and Operation), Electronic Engine Controls (303-14C, Description and Operation).
Electric Booster Heater Component Description
The electric booster heater is installed in the heater assembly, on the downstream side of the heater core. It consists of
ceramic coated thermistor elements, rated at 1.25 kW, and a micro-controller. Electrical power for the booster heater is
supplied by the BJB via a 150 A megafuse installed under the RH front seat.
Page 1768 of 3039
Auxiliary Climate Control - Auxiliary Coolant Flow Pump
Removal and Installation
Removal Published: 11-May-2011
1. WARNING: Do not work on or under a vehicle supported only by a jack.
Always support the vehicle on safety stands.
Raise and support the vehicle.
2. Refer to: Air Deflector (501-02, Removal and Installation).
3.
4.
lose.
5.
lose.
NOTE: Clamp the coolant hose to minimize coolant
NOTE: Clamp the coolant hose to minimize coolant