2010 JAGUAR XFR brakes

After any work on the rear brakes, the parking brake must be re-calibrated.
Refer to: Parking Brake (206-05 Parking Brake and Actuation, Description and Operation). www.JagDocs.com

Published: 02-Oct-2012
Rear Disc Brake - TDV6 3.0L Diesel /V8 5.0L Petrol/V8 S/C 5.0L Petrol - Brake
Caliper Vehicles With: High Performance Brakes
Removal and Installation

Removal


WARNING: Failure to release the tension and calibrate the electric parking brake during rear parking brake related service
procedures, could cause the parking brake to function incorrectly or become inoperative.


CAUTION: Brake fluid will damage paint finished surfaces. If spilled, immediately remove the fluid and clean the area
with water.


NOTE: Removal steps in this procedure may contain installation details.


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: Wheel and Tire (204-04 Wheels and Tires, Removal and Installation).

3. Refer to: Parking Brake Cable Tension Release (206-05 Parking Brake and Actuation, General Procedures).

4.

Published: 11-May-2011
Rear Disc Brake - TDV6 3.0L Diesel /V8 5.0L Petrol/V8 S/C 5.0L Petrol - Brake
Disc Vehicles With: High Performance Brakes
Removal and Installation

Removal


CAUTION: Brake discs must be renewed in pairs.


NOTE: Removal steps in this procedure may contain installation details.


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: Brake Pads - Vehicles With: High Performance Brakes (206-04B Rear Disc Brake - TDV6 3.0L Diesel /V8 5.0L Petrol/V8 S/C 5.0L Petrol,
Removal and Installation).

3.

4.
Installation



Torque: 103 Nm
























Remove the 2 clips.
Clean the components mating faces.
1.Toinstall,reversetheremovalprocedure.

Published: 11-May-2011
Rear Disc Brake - TDV6 3.0L Diesel /V8 5.0L Petrol/V8 S/C 5.0L Petrol - Brake
Pads Vehicles With: High Performance Brakes
Removal and Installation

Special Tool(s)


206-080
Brake caliper piston retractor tool

206-081
Brake caliper piston retractor tool

303-588
Remover, Crankshaft Pulley/Damper Removal

WARNINGS:


Failure to release the tension and calibrate the electric parking brake during rear parking brake related service procedures,
could cause the parking brake to function incorrectly or become inoperative.


Do not allow dirt or foreign liquids to enter the reservoir. Use only new brake fluid of the correct specification from
airtight containers. Do not mix brands of brake fluid as they may not be compatible.


Brake pads must be renewed in axle sets only, otherwise braking efficiency may be impaired.


CAUTION: Brake fluid will damage paint finished surfaces. If spilled, immediately remove the fluid and clean the area
with water.
NOTES:


Only extraction bolt from special tool 303-588 is used.


Removal steps in this procedure may contain installation details.


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.

Symptom Possible Cause Action The parking brake will not
engage or release (with
parking brake warning
message)
Cables fouled, trapped or damaged
Cables incorrectly routed or installed
Rear lining wear
Actuator malfunction
Caliper malfunction
Check the rear and primary
cables for correct installation
and damage
Inspect the rear brake linings for
wear
Re-calibrate the parking brake,
refer to the calibration procedure
Check the rear service brake for
correct installation and operation No communication with the
parking brake module
Fuse
Module off Bus
CAN network error
Parking brake module fault
Check fuses
Ensure battery is fully charged
and in serviceable condition.
Check battery voltage at parking
brake module
Check CAN network using
manufacturer approved
diagnostic system 'Park brake Fault' displayed on
message center with
associated warning lamps
Parking brake system fault
Check the parking brake module
for DTCs and refer to DTC Index Brakes drag
Parking brake not re-calibrated after battery has
been disconnected or has been in a state of
discharge, or repairs have been carried out to
the rear service or parking brake system
Service brake system fault
Re-calibrate parking brake, refer
to the calibration procedure
Check the service brake for
correct operation DTC Index

For a list of diagnostic trouble codes that could be logged on this vehicle, please refer to Section 100-00.
REFER to: Diagnostic Trouble Code (DTC) Index - DTC: Electric Parking Brake (PBM) (100-00 General Information, Description and Operation).

1 LH (left-hand) front brake 2 RH (right-hand) rear brake 3 LH rear brake 4 RH front brake 5 Primary circuit inlet port 6 Secondary circuit inlet port The ABS module is located in the passenger side, rear engine bay and incorporates the HCU. The HCU is a four channel unit that modulates the supply of hydraulic pressure to the brakes under control of the ABS module.
The primary and secondary outlets of the master cylinder are connected to the primary and secondary circuits within the HCU. The primary circuit in the HCU has separate outlet ports to the RH front and LH rear brakes. The secondary circuit in the HCU has separate outlet ports to the LH front and RH rear brakes.

Published: 11-May-2011
Anti-Lock Control - Stability Assist - Anti-Lock Control - Stability Assist - Overview
Description and Operation

Overview

The ABS (anti-lock brake system) and DSC (dynamic stability control) system features a Bosch modulator, which is an
integrated four-channel HCU (hydraulic control unit) and ABS module. The unit is located in the rear of the engine compartment on the passenger side, and is installed in the brake hydraulic circuit between the brake master cylinder and the four brake
calipers.

The ABS module is connected to the high speed CAN (controller area network) bus, and actively interacts with other vehicle system control modules and associated sensors to receive and transmit current vehicle operating information.

When required, the ABS module will actively intervene and operate the HCU during braking or vehicle maneuvers to correct the vehicle attitude, stability, traction or speed. During incidents of vehicle correction, the ABS module may also request the ECM (engine control module) to control engine power in order to further stabilize and correct the vehicle.
To provide full system functionality, the ABS and DSC system comprise the following components: DSC switch.
Four wheel speed sensors.
Steering angle sensor.
Yaw rate and lateral acceleration sensor.
Stoplamp switch.
Instrument cluster indicator lamps.
Integrated ABS module and HCU. Brake booster vacuum sensor (3.0L vehicles only).

Two variants of ABS module are available, Bosch ESP®8.1 and Bosch ESP®plus8.1. The Bosch ESP®plus8.1 system is fitted to vehicles with ACC (adaptive cruise control) and incorporates a new feature to Jaguar known as 'electronic brake prefill'.

Electronic brake prefill, senses any rapid throttle lift off, activating a small brake hydraulic pressure build-up of approximately 3
to 5 bar (43.5 to 72.5 lbf/in²) in anticipation of the brakes being applied. This application produces a quicker brake pedal
response and consequently slightly shorter stopping distances. When the ECM detects rapid throttle lift off it signals the ABS module which controls the HCU to apply a low brake pressure to assist in a quicker brake application.

NOTE: All vehicles with ACC are supported by the Bosch ESP®plus8.1 system.

The ABS provides the following brake functions that are designed to assist the vehicle or aid the driver: ABS. DSC, including Trac DSC.
CBC (corner brake control).
EBD (electronic brake force distribution).
ETC (electronic traction control).
EBA (emergency brake assist).
EDC (engine drag-torque control).
Understeer control.
Electronic brake prefill (vehicles with ACC only).
Brake vacuum assist (3.0L vehicles only).

All the brake functions listed are automatically active when the ignition is in power mode and the engine is running. The DSC
system can be selected to off using the DSC switch.


WARNING: Although the vehicle is fitted with DSC, it remains the drivers responsibility to drive safely according to the
prevailing conditions.

7 Brake fluid level switch 8 LH rear wheel speed sensor 9 RH rear wheel speed sensor 10 RJB (rear junction box) 11 High mounted stop lamp 12 LH stop lamp 13 RH stop lamp 14 Diagnostic socket 15 TCM (transmission control module) 16 Electronic parking brake module 17 ECM (engine control module) 18 Instrument cluster 19 ABS (anti-lock brake system) module 20 JaguarDrive selector module 21 Adaptive damping control module 22 Adaptive speed control module 23 Yaw rate and lateral acceleration sensor 24 Roof opening panel motor/module 25 Brake booster vacuum sensor (3.0L vehicles only) 26 Steering angle sensor


Anti-Lock Brake System System Operation

ABS controls the speed of all road wheels to ensure optimum wheel slip when braking at the adhesion limit. The wheels are prevented from locking to retain effective steering control of the vehicle.

The brake pressures are modulated separately for each wheel. Rear brake pressures are controlled to maintain rear stability on
split friction surfaces.

Dynamic Stability Control

DSC (dynamic stability control) uses brakes and powertrain torque control to assist in maintaining the yaw stability of the
vehicle. While the ignition is energized the DSC function is permanently enabled, unless selected off using the DSC switch.

DSC enhances driving safety in abrupt maneuvers and in under-steer or over-steer situations that may occur in a bend. The
ABS module monitors the yaw rate and lateral acceleration of the vehicle, steering input and individual wheel speeds, then selectively applies individual brakes and signals for powertrain torque adjustments to reduce under-steer or over-steer
conditions.
In general:

In an under-steer situation the inner wheels are braked to counteract the yaw movement towards the outer edge of the
bend.
In an over-steer situation the outer wheels are braked to prevent the rear end of the vehicle from pushing towards the
outer edge of the bend.

The ABS module monitors the tracking stability of the vehicle using inputs from the wheel speed sensors, the steering angle sensor, and the yaw rate and lateral acceleration sensor. The tracking stability is compared with stored target data. Whenever
the tracking stability deviates from the target data, the ABS module intervenes by applying the appropriate control strategy. The following interactions occur in an intervention situation:

High speed CAN signal to the ECM, to reduce engine torque. Application of braking to the appropriate corner of the vehicle.
Trac DSC

TracDSC is an alternative setting of DSC with reduced system interventions. With TracDSC engaged, traction may be somewhat
increased, although stability may be reduced compared to normal DSC. TracDSC is intended for use only on dry tarmac, by
suitably experienced drivers and should not be selected for other surfaces or by drivers with insufficient skill and training to
operate the vehicle safely with the TracDSC function engaged.

The less restrictive TracDSC setting may be preferred, for example, by expert drivers engaged in high performance driving on
dry Tarmac surfaces such as tracks and circuits.
Switching between DSC and Trac DSC: