coolant pump JAGUAR XFR 2010 1.G Owner's Guide

Published: 11-May-2011
Climate Control - Heating and Ventilation - System Operation and Component Description
Description and Operation

Control Diagram

NOTE: A = Hardwired; N = Medium speed CAN (controller area network) bus; O = LIN (local interconnect network) bus; P
= Media orientated system transport (MOST) ring.



Item Description 1 Battery 2 BJB (battery junction box) 3 CJB (central junction box) 4 Auxiliary coolant pump Comments:
all except 3.0L vehicles; 5.0L version shown, 3.0L diesel version similar www.JagDocs.com

Touch screen display (TSD) 6 Integrated control panel 7 Information control module 8 ATC (automatic temperature control) module 9 Face/Feet distribution stepper motor 10 RH (right-hand) temperature blend stepper motor 11 LH (left-hand) temperature blend stepper motor 12 Windshield (defrost) distribution stepper motor 13 Blower control module 14 RJB (rear junction box) 15 Blower
System Operation
Operation of the heating and ventilation system is controlled by the ATC module. Refer to: Control Components (412-01 Climate Control, Description and Operation).
The system can be operated in automatic or manual mode, with temperature settings selected using the switches on the
integrated control panel.

When the engine is running, coolant is constantly circulated through the heater core by the engine coolant pump and the
auxiliary coolant pump. Where fitted, the auxiliary coolant pump is energized by the CJB on receipt of medium speed CAN bus signals from the ATC module. The CJB broadcasts auxiliary coolant pump status over the medium speed CAN bus for use by other vehicle systems.

The blower is supplied with power by the blower relay on the RJB and connected to ground via the blower control module. The blower control module regulates the voltage across the blower motor to control blower speed. The voltage set by the blower
control module is controlled by a PWM (pulse width modulation) signal from the ATC module. The ATC module uses a feedback signal from the blower control module to monitor blower speed.
Refer to: Control Components (412-01 Climate Control, Description and Operation).


Heater Assembly Component Description

The heater assembly controls the temperature and flow of air supplied to the air distribution ducts. The heater assembly is
mounted on the vehicle centerline, between the instrument panel and the engine bulkhead.

The heater assembly consists of a casing that contains an A/C (air conditioning) evaporator, a heater core, two air distribution
control doors and two temperature blend control doors. On 2.7L diesel vehicles, the heater assembly also contains an electric
booster heater.
Refer to: Electric Booster Heater (412-02 Auxiliary Climate Control, Description and Operation).
Mounted on the heater casing are four stepper motors. Each of the stepper motors is connected to either an air distribution
control door or a temperature blend control door.
The A/C evaporator is part of the A/C system. Refer to: Air Conditioning (412-01 Climate Control, Description and Operation).
The heater core provides the heat source to warm the air supplied to the passenger compartment. The heater core is an
aluminum two pass, fin and tube heat exchanger, and is installed across the width of the heater housing. Two aluminum tubes
attached to the heater core extend through the engine bulkhead and connect to the engine cooling system. For additional
information, refer to:
Engine Cooling (303-03A, Description and Operation),
Engine Cooling (303-03B Engine Cooling - V6 3.0L Petrol, Description and Operation), Engine Cooling (303-03C, Description and Operation).

Air Inlet Duct

The air inlet duct connects the fresh air inlet in the engine bulkhead to the heater assembly. The air inlet duct is installed
behind the instrument panel on the passenger side.

The air inlet duct consists of a casing that contains a pollen filter, an air inlet door, a blower and a blower control module. A
recirculation air inlet is incorporated into the casing. A servo motor is mounted on the casing and connected to the air inlet
door, to allow selection between fresh and recirculated air.
Refer to: Control Components (412-01 Climate Control, Description and Operation). The pollen filter is part of the air distribution and filtering system.
Refer to: Air Distribution and Filtering (412-01 Climate Control, Description and Operation).
The blower regulates the volume of air flowing through the air inlet duct to the heater assembly. The blower consists of an
open hub, centrifugal fan and an electric motor.
The blower control module regulates the power supply to the blower motor. The blower control module is installed in the air

inlet duct downstream of the blower, where any heat generated during operation is dissipated by the air flow.

Auxiliary Coolant Pump

On all vehicles except 3.0L, an auxiliary coolant pump is installed on the rear right side of the radiator housing, in the return
line from the heater core. The auxiliary coolant pump is an electric pump that boosts the flow of coolant through the heater
core.

Ventilation Outlets

The ventilation outlets allow the free flow of air through the passenger compartment. The outlets are installed in the LH and
RH rear quarter panels, below the rear lamps. Each ventilation outlet consists of a grille covered by a soft rubber flap, and is
effectively a non-return valve. The flaps open and close automatically depending on the pressure differential between the air
inside and outside the vehicle.

Published: 11-May-2011
Climate Control - Control Components - System Operation and Component Description
Description and Operation

Control Diagram

NOTE: A = Hardwired; N = Medium speed CAN (controller area network) bus; O = LIN (local interconnect network) bus; P
= Media orientated system transport (MOST) ring.



Item Description 1 Battery 2 BJB (battery junction box) 3 CJB (central junction box) 4 Auxiliary coolant pump Comments:
All except 3.0L vehicles; 5.0L version shown, 3.0L diesel version similar.

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

DTC Description Possible Cause Action B1D2711
Heater Coolant
Pump
Heater coolant pump control
circuit - short to ground Carry out any pinpoint tests associated with this DTC
using the manufacturer approved diagnostic system.
Refer to the electrical circuit diagrams and check heater
coolant pump control circuit for short to ground B1D2713
Heater Coolant
Pump
Heater coolant pump control
circuit - open circuit Carry out any pinpoint tests associated with this DTC
using the manufacturer approved diagnostic system.
Refer to the electrical circuit diagrams and check heater
coolant pump control circuit for open circuit B1D9796 Tilt Sensor
Component internal failure Suspect the battery backed sounder, check and install a
new battery backed sounder as required P057112
Brake Switch A
Circuit
Footbrake switch circuit - short
to power Refer to the electrical circuit diagrams and check
footbrake switch circuit for short to power P080111
Reverse Inhibit
Control Circuit
Electrochromic rear view mirror,
reverse inhibit circuit - short to
ground Carry out any pinpoint tests associated with this DTC
using the manufacturer approved diagnostic system.
Refer to the electrical circuit diagrams and check
electrochromic rear view mirror, reverse inhibit circuit for
short to ground P080112
Reverse Inhibit
Control Circuit
Electrochromic rear view mirror,
reverse inhibit circuit - short to
power Refer to the electrical circuit diagrams and check
electrochromic rear view mirror, reverse inhibit circuit for
short to power P080113
Reverse Inhibit
Control Circuit
Electrochromic rear view mirror,
reverse inhibit circuit - open
circuit Refer to the electrical circuit diagrams and check
electrochromic rear view mirror, reverse inhibit circuit for
open circuit P085013
Park/Neutral Switch
Input Circuit
Park/Neutral signal circuit -
open circuit Refer to the electrical circuit diagrams and check
Park/Neutral signal circuit for open circuit P162413 Anti-theft System
RJB anti-theft signal circuit -
open circuit Refer to the electrical circuit diagrams and check RJB
anti-theft signal circuit for open circuit P254F13
Engine Hood Switch
Circuit/Open
Hood ajar switch signal circuit -
open circuit Refer to the electrical circuit diagrams and check hood
ajar switch signal circuit for open circuit U001988
Low Speed CAN
Communication Bus
Bus OFF Carry out any pinpoint tests associated with this DTC
using the manufacturer approved diagnostic system. U014200
Lost
Communication
With Body Control
Module "B"
No sub type information Carry out any pinpoint tests associated with this DTC
using the manufacturer approved diagnostic system. U015500
Lost
Communication
With Instrument
Panel Cluster (IPC)
Control Module
No sub type information Carry out any pinpoint tests associated with this DTC
using the manufacturer approved diagnostic system. U015600
Lost
Communication
With Information
Center "A"
No sub type information Carry out any pinpoint tests associated with this DTC
using the manufacturer approved diagnostic system. U016400
Lost
Communication
With HVAC Control
Module
No sub type information Carry out any pinpoint tests associated with this DTC
using the manufacturer approved diagnostic system. U016800
Lost
Communication
With Vehicle
Security Control
Module
No sub type information Check power and ground supplies to vehicle security
module U019900
Lost
Communication
With "Door Control
Module A"
No sub type information Carry out any pinpoint tests associated with this DTC
using the manufacturer approved diagnostic system. U020000
Lost
Communication
With "Door Control
Module B"
No sub type information Carry out any pinpoint tests associated with this DTC
using the manufacturer approved diagnostic system.