2010 JAGUAR XFR Workshop Manual

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Page 585 of 3039

JAGUAR XFR 2010 1.G Workshop Manual TEST
CONDITIONS DETAILS/RESULTS/ACTIONS C1: ROAD TEST VEHICLE 1 Road test the vehicle and apply the brake pedal. Does the vehicle pull or drift?
Yes
GO to C2. No
No action required, vehicle is O

TEST
CONDITIONS DETAILS/RESULTS/ACTIONS C1: ROAD TEST VEHICLE 1 Road test the vehicle and apply the brake pedal. Does the vehicle pull or drift?
Yes
GO to C2. No
No action required, vehicle is OK. C2: INSPECT TIRE CONDITION/PRESSURE 1 Check for excessive tire wear or incorrect pressures. Are the tires at the correct pressure and in good condition?
Yes
GO to C3. No
Adjust the tire pressures or install new tires if excessively worn. Re-test the system for normal operation. C3: CHECK CALIPERS 1 Check the disc brake caliper pistons and pins for binding, leaking or sticking. Do the disc brake caliper pistons and pins bind, leak or stick?
Yes
Rectify sticking pins and install new brake calipers as required. REFER to:
Brake Caliper - Vehicles With: Standard Brakes (206-03A Front Disc Brake - V6 3.0L Petrol, Removal and Installation),
Brake Caliper - Vehicles With: High Performance Brakes (206-03A Front Disc Brake - V6 3.0L Petrol, Removal and Installation),
Brake Caliper (206-04A Rear Disc Brake - V6 3.0L Petrol, Removal and Installation), Brake Caliper - Vehicles With: High Performance Brakes (206-04, Removal and Installation).
Re-test the system for normal operation.
No
GO to C4. C4: INSPECT BRAKE DISCS 1 Check the brake discs for excessive damage, thickness variation or runout. REFER to: Brake Disc Runout Check (206-00 Brake System - General Information, General Procedures). Does excessive damage or runout exist?
Yes
Install new brake discs and brake pads as required. Re-test the system for normal operation.
No
GO to C5. C5: INSPECT THE FRONT HUB AND WHEEL BEARING ASSEMBLY 1 Check the front hub and wheel bearing assembly. Are the wheel bearings OK?
Yes
GO to C6. No
Install new wheel bearings as required.
REFER to: Front Wheel Bearing and Wheel Hub - V6 3.0L Petrol (204-01 Front Suspension, Removal and Installation).
Re-test the system for normal operation. C6: CHECK SUSPENSION BUSHINGS AND BALL JOINTS. 1 Check all suspension bushings and ball joints. Are the suspension bushings and ball joints OK?
Yes
GO to C7. No
Install new front suspension bushings and ball joints as required. Install new rear suspension bushings
and ball joints as required. Refer to the relevant section in the workshop manual. C7: CHECK VEHICLE ALIGNMENT 1 Check the vehicle alignment. REFER to: Front Subframe - 2.7L Diesel (502-00, Removal and Installation),
Front Subframe - V6 3.0L Petrol (502-00 Uni-Body, Subframe and Mounting System, Removal and Installation),
Front Subframe - 4.2L (502-00, Removal and Installation). Is a vibration present?
Yes
Check for wear or failure of steering gear bushings. Check for wear or failure of steering gear ball joints.
Check for wear or failure of front wheel bearings, suspension bushings and ball joints. Check for wear or
failure of rear wheel bearings, suspension bushings and ball joints. Refer to relevant section in workshop
manual and install new components as required.
No
No action required, vehicle is OK.
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Page 586 of 3039

JAGUAR XFR 2010 1.G Workshop Manual TEST
CONDITIONS DETAILS/RESULTS/ACTIONS D1: CHECK FOR SPONGY PEDAL (ENGINE OFF) 1 Check for a firm brake pedal. Is the brake pedal effort and brake pedal travel normal? Yes
No action is required,

TEST
CONDITIONS DETAILS/RESULTS/ACTIONS D1: CHECK FOR SPONGY PEDAL (ENGINE OFF) 1 Check for a firm brake pedal. Is the brake pedal effort and brake pedal travel normal? Yes
No action is required, vehicle is OK.
No
GO to D2. D2: CHECK BRAKE PEDAL RESERVE (ENGINE OFF) 1 Pump the brake pedal 10 times and hold on the final application. Does the brake pedal feel firm on final application? Yes
GO to D3. No
Bleed the brake system.
REFER to: Brake System Bleeding (206-00 Brake System - General Information, General Procedures). D3: CHECK BRAKE PEDAL RESERVE (ENGINE ON) 1 With engine running at idle speed. 2 Apply the brake pedal lightly three or four times. 3 Wait 15 seconds for the vacuum to recover. 4 Push down on the brake pedal until it stops moving downward or an increased resistance to the brake pedal travel occurs. 5 Hold the brake pedal in the applied position while increasing the engine speed to 2000 revs/min. 6 Release the accelerator pedal. Does the brake pedal move downward as the engine speed returns to idle? Yes
GO to D4. No
Check the vacuum to brake booster. D4: CHECK BRAKE FLUID LEVEL 1 Check the brake master cylinder reservoir fluid level. Is the fluid level OK? Yes
Bleed the brake system.
REFER to: Brake System Bleeding (206-00 Brake System - General Information, General Procedures). Re-test the system for normal operation.
No
Check for leaking brake system and rectify as required. Add fluid and bleed the brake system.
REFER to: Brake System Bleeding (206-00 Brake System - General Information, General Procedures). Re-test the system for normal operation.
PINPOINT TEST E : THE PEDAL GOES DOWN FAST TEST
CONDITIONS DETAILS/RESULTS/ACTIONS E1: ROAD TEST VEHICLE 1 Road test the vehicle and apply the brake pedal. Is the brake pedal effort and brake pedal travel normal? Yes
No action required, vehicle is OK.
No
GO to E2. E2: CHECK BRAKE PEDAL TRAVEL-PRESSURIZE SYSTEM 1 Pump the brake pedal rapidly (five times). Does the brake pedal travel build up and then hold? Yes
Bleed the brake system.
REFER to: Brake System Bleeding (206-00 Brake System - General Information, General Procedures). Re-test the system for normal operation.
No
GO to E3. E3: CHECK FOR BRAKE SYSTEM LEAKS Is the alignment within specification?
Yes
No action is required, vehicle is OK.
No
Adjust the alignment as required. REFER to:
Front Subframe - 2.7L Diesel (502-00, Removal and Installation),
Front Subframe - V6 3.0L Petrol (502-00 Uni-Body, Subframe and Mounting System, Removal and Installation),
Front Subframe - 4.2L (502-00, Removal and Installation).

Page 587 of 3039

JAGUAR XFR 2010 1.G Workshop Manual Check for external brake system leaks. For additional information, refer to brake master cylinder component test in this section. Is there a leak present? Yes
Repair as necessary, add fluid and ble

Check for external brake system leaks. For additional information, refer to brake master cylinder component test in this section. Is there a leak present? Yes
Repair as necessary, add fluid and bleed brake system.
REFER to: Brake System Bleeding (206-00 Brake System - General Information, General Procedures). Re-test the system for normal operation.
No
No action required, system is OK.
PINPOINT TEST F : THE PEDAL GOES DOWN SLOWLY TEST
CONDITIONS DETAILS/RESULTS/ACTIONS F1: ROAD TEST VEHICLE - CHECK BRAKE PEDAL OPERATION 1 Check if the condition occurs during actual stopping application by applying the brake pedal while the vehicle is moving. Does the condition occur when the vehicle is moving? Yes
GO to F2. No
GO to F3. F2: CHECK FOR BRAKE SYSTEM LEAKS 1 Check for external brake system leaks. For additional information, refer to brake master cylinder component test in this section. Are there any external brake system leaks? Yes
Rectify as necessary. Add fluid and bleed the brake system.
REFER to: Brake System Bleeding (206-00 Brake System - General Information, General Procedures). Re-test the system for normal operation.
No
GO to F3. F3: CARRY OUT A BRAKE MASTER CYLINDER BYPASS TEST 1 Test for brake master cylinder bypass condition. Refer to Brake master cylinder component test in this section. Has a concern been identified? Yes
Install a new brake master cylinder, add fluid and bleed the brake system.
REFER to: Brake System Bleeding (206-00 Brake System - General Information, General Procedures). Re-test the system for normal operation.
No
No action required, system is OK.
PINPOINT TEST G : EXCESSIVE BRAKE PEDAL EFFORT TEST
CONDITIONS DETAILS/RESULTS/ACTIONS G1: CHECK BRAKE PADS 1 Check the brake pads for wear, contamination, correct installation, damage and type. Has a concern been identified?
Yes
Correctly install or install new brake pads as required. REFER to:
Brake Pads - Vehicles With: Standard Brakes (206-03A Front Disc Brake - V6 3.0L Petrol, Removal and Installation),
Brake Pads - Vehicles With: High Performance Brakes (206-03A Front Disc Brake - V6 3.0L Petrol, Removal and Installation),
Brake Pads (206-04A Rear Disc Brake - V6 3.0L Petrol, Removal and Installation), Brake Pads - Vehicles With: High Performance Brakes (206-04, Removal and Installation).
Re-test the system for normal operation.
No
GO to G2. G2: CHECK VACUUM 1 Disconnect the vacuum hose from the brake booster. 2 Connect a vacuum/pressure tester to the vacuum hose. 3 Run the engine at normal operating temperature. 4 Record the vacuum reading. Is the reading 40.5 kPa (12 in-Hg) or greater?
Yes
GO to G3. No
Locate and rectify the source of low vacuum. Re-test the system for normal operation. G3: INSPECT SYSTEM 1 Switch the engine off. 2 Reconnect the vacuum hose.

Page 588 of 3039

JAGUAR XFR 2010 1.G Workshop Manual Inspect the brake booster, rubber grommet, and all vacuum plumbing for cracks, holes, damaged connections, or missing clamps. 4 Pump the brake pedal several times to exhaust the vacuum. Push down on

Inspect the brake booster, rubber grommet, and all vacuum plumbing for cracks, holes, damaged connections, or missing clamps. 4 Pump the brake pedal several times to exhaust the vacuum. Push down on the brake pedal and hold. Does the brake pedal move down when the engine is started?
Yes
Vacuum system is OK.
No
GO to G4. G4: CHECK POWER BRAKE BOOSTER VALVE 1 Check the brake booster valve. For additional information, refer to Brake Booster component test in this section. Is the power brake booster valve OK?
Yes
Check the brake booster. For additional information, refer to Brake Booster component test in this
section. Install a new brake booster as required. REFER to:
Brake Booster (206-07 Power Brake Actuation, Removal and Installation), Brake Booster - RHD (206-07, Removal and Installation).
Re-test the system for normal operation.
No
Install a new brake booster valve. Re-test the system for normal operation.
PINPOINT TEST H : BRAKE LOCKUP DURING LIGHT BRAKE PEDAL FORCE TEST
CONDITIONS DETAILS/RESULTS/ACTIONS H1: TEST BRAKE LOCKUP 1 Road test the vehicle and apply the brake pedal lightly. Do the brakes lockup?
Yes
GO to H2. No
No action required, vehicle is OK. H2: INSPECT BRAKE PADS 1 Inspect brake pads for contamination, correct installation, damage and type. Has a concern been identified?
Yes
Correctly install or install new brake pads as required. REFER to:
Brake Pads - Vehicles With: Standard Brakes (206-03A Front Disc Brake - V6 3.0L Petrol, Removal and Installation),
Brake Pads - Vehicles With: High Performance Brakes (206-03A Front Disc Brake - V6 3.0L Petrol, Removal and Installation),
Brake Pads (206-04A Rear Disc Brake - V6 3.0L Petrol, Removal and Installation), Brake Pads - Vehicles With: High Performance Brakes (206-04, Removal and Installation).
Re-test the system for normal operation.
No
GO to H3. H3: INSPECT BRAKE CALIPERS 1 Inspect brake calipers for binding, leaking or sticking. Has a concern been identified?
Yes
Correctly install or install new brake calipers as required. REFER to:
Brake Caliper - Vehicles With: Standard Brakes (206-03A Front Disc Brake - V6 3.0L Petrol, Removal and Installation),
Brake Caliper - Vehicles With: High Performance Brakes (206-03A Front Disc Brake - V6 3.0L Petrol, Removal and Installation),
Brake Caliper (206-04A Rear Disc Brake - V6 3.0L Petrol, Removal and Installation), Brake Caliper - Vehicles With: High Performance Brakes (206-04, Removal and Installation).
Re-test the system for normal operation.
No
No action required, vehicle is OK.
PINPOINT TEST I : BRAKES DRAG TEST
CONDITIONS DETAILS/RESULTS/ACTIONS I1: ROAD TEST VEHICLE 1 Road test the vehicle and apply the brakes. Are the brakes functioning correctly? Yes
No action required, vehicle is OK.
No
GO to I2. I2: CHECK BRAKE CALIPERS 1 Check the front and rear calipers pistons and pins for binding, leaking or sticking.

Page 589 of 3039

JAGUAR XFR 2010 1.G Workshop Manual Yes
Inspect the brake calipers and parking brake cables. Install new components as required. Re-test the
system for normal operation.
No
GO to I3. I3: CHECK BRAKE BOOSTER 1 Check the brake booste

Yes
Inspect the brake calipers and parking brake cables. Install new components as required. Re-test the
system for normal operation.
No
GO to I3. I3: CHECK BRAKE BOOSTER 1 Check the brake booster connecting rod alignment and travel. Is the connecting rod OK? Yes
Vehicle is OK.
No
Install a new brake booster as required. REFER to:
Brake Booster (206-07 Power Brake Actuation, Removal and Installation), Brake Booster - RHD (206-07, Removal and Installation).
Re-test the system for normal operation.
PINPOINT TEST J : EXCESSIVE/ERRATIC BRAKE PEDAL TRAVEL TEST
CONDITIONS DETAILS/RESULTS/ACTIONS J1: TEST ON ROUGH ROAD 1 Road test the vehicle on rough road conditions. 2 Apply the brakes slowly. Is the brake pedal effort and brake pedal travel normal?
Yes
No action required, vehicle is OK.
No
GO to J2. J2: CHECK BRAKE FLUID LEVEL 1 Check the brake master cylinder reservoir fluid level. Is the fluid level OK?
Yes
GO to J3. No
Check brake master cylinder reservoir sealing points. For additional information, refer to Brake master
cylinder component test in this section. Add brake fluid and bleed the brake system.
REFER to: Brake System Bleeding (206-00 Brake System - General Information, General Procedures). Re-test the system for normal operation. J3: CHECK BRAKE PEDAL RESERVE 1 Run engine at idle speed. 2 Apply the brake pedal lightly three or four times. 3 Wait 15 seconds for the vacuum to replenish. 4 Push down on the brake pedal until it stops moving downward or an increased resistance to the brake pedal travel occurs. 5 Hold the brake pedal in the applied position while increasing the engine speed to 2000 revs/min. 6 Release the accelerator pedal. Does the brake pedal move downward as the engine speed returns to idle?
Yes
GO to J4. No
Check the vacuum to the brake booster. J4: CHECK THE FRONT WHEEL BEARING ASSEMBLY 1 Check the front wheel bearing assembly. Are the front wheel bearings loose/damaged?
Yes
Tighten to specification or install a new front wheel bearing as required.
REFER to: Front Wheel Bearing and Wheel Hub - V6 3.0L Petrol (204-01 Front Suspension, Removal and Installation).
Re-test the system for normal operation.
No
Check the front brake discs for thickness variances.
PINPOINT TEST K : SLOW OR INCOMPLETE BRAKE PEDAL RETURN TEST
CONDITIONS DETAILS/RESULTS/ACTIONS K1: CHECK FOR BRAKE PEDAL RETURN 1 Run the engine at idle while making several brake applications. 2 Pull the brake pedal rearward with approximately 44.5 N (10lb) force. 3 Release the brake pedal and measure the distance to the toe board. 4 Make a hard brake application. 5 Release the brake pedal and measure the brake pedal to toe board distance. The brake pedal should return to its original position.

Page 590 of 3039

JAGUAR XFR 2010 1.G Workshop Manual
Does the brake pedal return to its original position? Yes
No action required, vehicle is OK.
No
GO to K2. K2: CHECK FOR BRAKE PEDAL BINDING 1 Disconnect the brake booster from the brake pedal.

Does the brake pedal return to its original position? Yes
No action required, vehicle is OK.
No
GO to K2. K2: CHECK FOR BRAKE PEDAL BINDING 1 Disconnect the brake booster from the brake pedal. Check the brake pedal to ensure free operation. Is the brake pedal operating freely? Yes
Install a new brake booster as required. REFER to:
Brake Booster (206-07 Power Brake Actuation, Removal and Installation), Brake Booster - RHD (206-07, Removal and Installation).
Re-test the system for normal operation.
No
Repair or install new brake pedal. Re-test the system for normal operation. Component Tests

Brake Booster

1. Check all hoses and connections. All unused vacuum connectors should be capped. Hoses and their connections should
be correctly secured and in good condition with no holes and no collapsed areas. Inspect the valve on the brake booster
for damage.
2. Check the hydraulic brake system for leaks or low fluid.

3. With the automatic transmission in PARK, stop the engine and apply the parking brake. Pump the brake pedal several
times to exhaust all vacuum in the system. With the engine switched off and all vacuum in the system exhausted,
apply the brake pedal and hold it down. Start the engine. If the vacuum system is operating, the brake pedal will tend
to move downward under constant foot pressure. If no motion is felt, the vacuum booster system is not functioning.

4. Remove the vacuum hose from the brake booster. Manifold vacuum should be available at the brake booster end of the
hose with the engine at idle speed and the automatic transmission in PARK. Make sure that all unused vacuum outlets
are correctly capped, hose connectors are correctly secured and vacuum hoses are in good condition. When it is
established that manifold vacuum is available to the brake booster, connect the vacuum hose to the brake booster and
repeat Step 3. If no downward movement of the brake pedal is felt, install a new brake booster.

5. Operate the engine for a minimum of 10 seconds at a fast idle. Stop the engine and allow the vehicle to stand for 10
minutes. Then, apply the brake pedal with approximately 89 N (20lb) of force. The pedal feel (brake application) should
be the same as that noted with the engine running. If the brake pedal feels hard (no power assist), install a new valve
and then repeat the test. If the brake pedal still feels hard, install a new brake booster. If the brake pedal movement
feels spongy, bleed the brake system.
REFER to: Brake System Bleeding (206-00 Brake System - General Information, General Procedures). Brake Master Cylinder

Usually, the first and strongest indicator of anything wrong in the brake system is a feeling through the brake pedal. In
diagnosing the condition of the brake master cylinder, check pedal feel as evidence of a brake concern. Check for brake warning
lamp illumination and the brake fluid level in the brake master cylinder reservoir.
Normal Conditions
The following conditions are considered normal and are not indications that the brake master cylinder is in need of repair.

Modern brake systems are designed to produce a pedal effort that is not as hard as in the past. Complaints of light
pedal efforts should be compared to the pedal efforts of another vehicle of the same model and year.
The fluid level will fall with brake pad wear.

Abnormal Conditions

Changes in the brake pedal feel or brake pedal travel are indicators that something could be wrong in the brake system. The
diagnostic procedure and techniques use brake pedal feel, warning indicator illumination and low brake fluid level as indicators
to diagnosing brake system concerns. The following conditions are considered abnormal and indicate that the brake master
cylinder is in need of repair:

NOTE: Prior to carrying out any diagnosis, make sure the brake system warning indicator is functional.
Brake pedal goes down fast. This could be caused by an external or internal leak.
Brake pedal goes down slowly. This could be caused by an internal or external leak.
Brake pedal is low or feels spongy. This condition may be caused by no fluid in the brake master cylinder, reservoir cap
vent holes clogged or air in the hydraulic system.
Brake pedal effort is excessive. This may be caused by a bind or obstruction in the pedal/linkage, a faulty non-return
valve, booster or insufficient booster vacuum.
Rear brakes lock up during light pedal force. This may be caused by damaged brake pads, a partially applied parking
brake, a damaged ABS sensor or bearing failure.
Brake pedal effort erratic. This condition could be caused by the brake booster or incorrectly installed brake pads.
Brake warning indicator is on. This may be caused by low fluid level or float assembly damaged. www.JagDocs.com

Page 591 of 3039

JAGUAR XFR 2010 1.G Workshop Manual Non Pressure Leaks

Any reduced fluid volume in the brake master cylinder reservoir may be caused by two types of none pressure external leaks.

Type 1: An external leak may occur at the brake mas

Page 592 of 3039

JAGUAR XFR 2010 1.G Workshop Manual
Brake System - General Information - Brake Disc Runout Check
General Procedures

Check Published: 01-Jul-2014

1. Remove the wheel and tire.
For additional information, refer to: Wheel and Tir

Brake System - General Information - Brake Disc Runout Check
General Procedures

Check Published: 01-Jul-2014

1. Remove the wheel and tire.
For additional information, refer to: Wheel and Tire (204-04 Wheels and Tires, Removal and Installation).

2. Install all the wheel nuts and tighten equally to 20 Nm (15 lb.ft).
Make sure that the brake disc is fully seated against the hub
face.

3. Install a dial test indicator gauge and holding fixture to a suitable
mounting point.

4. NOTE: If the runout is outside specification, check the hub face
runout.

Using the dial test indicator, measure the inner and outer faces of the
brake disc. For additional information, refer to: (206-00 Brake System -
General Information)
Specifications - 3.0L NA V6 - AJ27 (Specifications), Specifications - TDV6 3.0L Diesel /V8 5.0L Petrol/V8 S/C 5.0L Petrol (Specifications).
1. Position the gauge so that it contacts the disc 10 mm (0.4 in)
from the outer edge.
2. Slowly rotate the hub/disc assembly. Note the reading.

5. If a front hub runout check is required, remove the front brake disc. For
additional information, refer to:
Brake Disc - Vehicles With: Standard Brakes (206-03A Front Disc Brake - V6 3.0L Petrol, Removal and Installation),
Brake Disc - Vehicles With: Standard Brakes (206-03B Front Disc Brake - TDV6 3.0L Diesel /V8 5.0L Petrol/V8 S/C 5.0L Petrol, Removal and
Installation),
Brake Disc - Vehicles With: High Performance Brakes (206-03A Front Disc Brake - V6 3.0L Petrol, Removal and Installation),
Brake Disc - Vehicles With: High Performance Brakes (206-03B Front Disc Brake - TDV6 3.0L Diesel /V8 5.0L Petrol/V8 S/C 5.0L Petrol, Removal
and Installation).

6. If a rear hub runout check is required, remove the rear brake disc. For
additional information, refer to:
Brake Disc (206-04A Rear Disc Brake - V6 3.0L Petrol, Removal and Installation),
Brake Disc - 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),
Brake Disc - Vehicles With: Standard Brakes (206-04B Rear Disc Brake - TDV6 3.0L Diesel /V8 5.0L Petrol/V8 S/C 5.0L Petrol, Removal and
Installation).

7. NOTE: The hub surface should be free from dirt and corrosion. Do not
use abrasive cloths to clean hub faces.
Using the dial test indicator, measure the hub face runout.
1. Position the gauge so that it contacts the mounting tube
between the stud and the chamfer.
2. Slowly rotate the hub and note the runout. For additional
information, refer to the specification chart.
If the front hub runout exceeds the specifications, install a new
hub, brake disc and recheck. For additional information, refer to:
(204-01 Front Suspension)
Front Wheel Bearing and Wheel Hub - V6 3.0L Petrol (Removal and Installation),

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