2010 JAGUAR XFR Parking

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
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.

Parking brake module retaining bolts 4 - 35 Parking brake release actuator retaining bolts 20 15 -

Published: 11-May-2011
Parking Brake and Actuation - Parking Brake - Component Location
Description and Operation
Component Location










































Item Description 1 Parking brake switch 2 EPB (electronic parking brake) module 3 Parking brake actuator 4 Caliper and disc assemblies (2 off) 5 Stoplamp switch 6 Brake warning indicator - NAS vehicles 7 Brake warning indicator (all except NAS (North American Specification) vehicles) www.JagDocs.com

Published: 11-May-2011
Parking Brake and Actuation - Parking Brake - System Operation and
Component Description
Description and Operation

Control Diagram

NOTE: A = Hardwired; D = High speed CAN (controller area network) bus.



Item Description 1 Battery 2 BJB (battery junction box) 3 CJB (central junction box) 4 RJB (rear junction box) 5 EPB module 6 Stoplamp switch

7 Instrument cluster 8 Parking brake switch 9 Parking brake actuator


Static Apply System Operation

The EPB module receives a vehicle speed signal from the ABS (anti-lock brake system) module on the high speed CAN bus. If the parking brake switch is pulled to the 'Apply' position and vehicle speed is less than 2 mph (3 km/h), the EPB module will
instigate its 'Static Apply' mode and drive the actuator to apply full parking brake force to the rear wheels.

The EPB module monitors the current drawn by the actuator and compares this to information held within its configuration
software to determine when full braking force has been applied.

Dynamic Apply

There are two 'Dynamic Apply' modes; low speed dynamic and high speed dynamic. The low speed dynamic mode operates at
speeds between 2 mph (3 km/h) and 20 mph (32 km/h). The high speed dynamic mode operates at speeds above 20 mph (32
km/h).

If the parking brake switch is pulled up to the 'Apply' position and vehicle speed is within the low speed dynamic range, the
EPB module drives the actuator to apply full parking brake force to the rear wheels.

If the parking brake switch is pulled up to the 'Apply' position and vehicle speed is within the high speed dynamic range, the
EPB module will apply braking force to the rear wheels at a slower rate until full braking load is reached or the switch is
released. The rate with which braking force is applied is controlled by the EPB module, which monitors both current drawn by
the actuator and positional information from the actuator hall sensor and compares this to information held within its
configuration software.

Drive Away Release

The EPB module will initiate its 'Drive Away Release' function and automatically release the parking brake if the following
conditions are detected:
The engine is running.
Drive , or reverse is selected.
Positive throttle movement is detected.

The EPB module receives messages of gear selector position and throttle angle over the high speed CAN bus from the TCM (transmission control module) and the ECM (engine control module) respectively.

Release from Park

The EPB module will initiate its 'Release from Park' function and automatically release the parking brake if the gear selector is
moved from Park to any position except Neutral.

Repairs

Before carrying out any work on the parking brake system, the Jaguar approved diagnostic system must be connected and the
'parking brake unjam' routine run. The routine can be found in the 'Vehicle Configuration' area, under the 'Set-up and
Configuration' menu. After any work has been carried out on the parking brake, the system will require resetting.


CAUTION: Do not use the 'Emergency Release' tool to allow work to be carried out on the parking brake. Work can only be
carried out on the parking brake system after the 'parking brake unjam' routine has been run.

Resetting

If the electrical supply is disconnected from the EPB module, the actuator will loose its position memory. On battery
re-connection and ignition on, 'APPLY FOOT AND PARK BRAKE' will be displayed in the instrument cluster message center
indicating the parking brake requires resetting.
Refer to: Parking Brake (206-05, Diagnosis and Testing).

Operating Voltages

The EPB module will only operate the actuator if the power supply from the battery is between 9 V and 16 V. At any voltage
within this range, the actuator is able to fully tighten and release the brake cables. If the power supply falls outside of the
range, a fault code is stored in the EPB module and can be retrieved using the Jaguar approved diagnostic system.

Stoplamp Switch



The stoplamp switch is mounted on the brake pedal box. One of the prerequisites for releasing the parking brake is that the
foot brake is applied. The EPB module is able to determine the position of the footbrake by monitoring the status of the
stoplamp switch via a hardwired electrical connection.
The stoplamp switch also forms part of:
The ABS. Refer to: Anti-Lock Control - Stability Assist (206-09 Anti-Lock Control - Stability Assist, Description and Operation). The speed control system. For additional information, refer to:
Speed Control (310-03A, Description and Operation),
Speed Control (310-03B, Description and Operation),
Speed Control (310-03C, Description and Operation).

Red Illuminated Parking brake applied Red Flashing Parking brake electrical failure Amber Illuminated Parking brake electrical failure If a parking brake failure warning indicator is active, the message 'CANNOT APPLY PARK BRAKE' or 'PARK BRAKE FAULT' will
also appear in the instrument cluster message center. If the vehicle is moving with the parking brake applied, the message
'PARK BRAKE ON' will appear in the message center accompanied by a chime from the instrument cluster.
Refer to: Information and Message Center (413-08 Information and Message Center, Description and Operation).