2010 JAGUAR XFR Rear Drive

Rear Suspension - Rear Suspension
Diagnosis and Testing

Principle of Operation Published: 22-May-2012

For a detailed description of the suspension system, refer to the relevant Description and Operation section of the workshop
manual.REFER to: (204-02 Rear Suspension)

Rear Suspension (Description and Operation), Rear Suspension (Description and Operation), Rear Suspension (Description and Operation).
Inspection and Verification

1. Verify the customer concern

2. Visually inspect for obvious signs of damage and system integrity



3. If an obvious cause for an observed or reported condition is found, correct the cause (if possible) before proceeding to
the next step
4. If the fault is not visually evident, verify the symptom and refer to the following Symptom Chart

Symptom Chart
Symptom Possible Cause Action Evidence of fluid on suspension damper
Fluid on damper from an external source
Fluid leaking from damper
Damper not faulty, do not renew
GO to Pinpoint Test A.
PINPOINT TEST A : DAMPER FLUID LEAK DIAGNOSIS TEST CONDITIONS DETAILS/RESULTS/ACTIONS A1: ASSESS LEAK NOTES:


Residual oil left over from the damper assembly process may create oil staining on the damper tube. This will not affect
the function of the damper.
Slight seepage is considered normal. 1 Assess the extent of the oil leakage Is the leakage serious enough to indicate that the damper seal has failed? Yes
GO to Pinpoint Test B. No
Damper not faulty, do not renew.
PINPOINT TEST B : CONFIRM LEAK TEST CONDITIONS DETAILS/RESULTS/ACTIONS B1: ROAD TEST 1 Clean all traces of oil from the damper 2 Drive the vehicle over a speed bump or similar ten times Is any fluid visible on the outside of the damper? Yes
GO to Pinpoint Test C. No
Damper not faulty, do not renew.
PINPOINT TEST C : DAMPER STICKOUT TEST TEST CONDITIONS DETAILS/RESULTS/ACTIONS C1: DAMPER STICKOUT TEST Mechanical

Damaged suspension dampers Visual Inspection

11.















12.
13.
14. NOTE: Left-hand shown, right-hand similar.

Detach the shock absorber.













Detach the fuel filler hose.

















CAUTION: Under no circumstances must the flexible
coupling (or its fixings) be loosened or removed from the
driveshaft.
Detach the driveshaft from the rear drive axle flange.
Mark the position of the driveshaft in relation to the
rear drive axle flange.
Mark the position of the balance nut in relation to the
rear drive axle flange. (if fitted).
Mark the position of each nut and bolt in relation to the
driveshaft flexible joint.







NOTE: Left-hand shown, right-hand similar.

Remove the rear subframe reinforcement plate retaining bolts. www.JagDocs.com

10.















11.
12. NOTE: Left-hand shown, right-hand similar.

Install the shock absorber.
Tighten to 133 Nm.














NOTE: Install the components to their original fitted
positions.
Attach the driveshaft to the rear drive axle flange.












Attach the fuel filler hose to the fuel tank.













13.
Connect both park brake cables to the rear brake calipers. www.JagDocs.com

1 Tire valve and pressure sensor 2 Tire fitting/removal tool initial start position 3 High tire and bead tension area 4 Low tire and bead tension area When removing the tire, the bead breaker must not be used within 90 degrees of the tire valve in each direction on each side
of the tire.

When using the tire removal machine, the fitting arm start position must be positioned as shown in the tire changing
illustration for each side of the tire. The wheel can then be rotated through 180 degrees in a counter-clockwise direction. This
will relieve tension from the tire bead allowing the remaining 180 degrees of the tire to be manually pulled from the rim.

When refitting the tire, position the fitting arm as shown. Rotate the tire and take care that the bead on the low tension side
of the tire does not damage the sensor.

Run-Flat Tires

Run-flat tires are not available on vehicles from 2011MY.

TREAD Act - NAS Only

Vehicles supplied to the North American markets must comply with the legislation of the Transport Recall Enhancement,
Accountability and Documentation (TREAD) act. Part of the requirement of the TREAD act is for the vehicle to display a label
which defines the recommended tire inflation pressure, load limits and maximum load of passengers and luggage weight the
vehicle can safely carry. This label will be specific to each individual vehicle and will be installed on the production line. The
label is positioned on the driver's side 'B' pillar on NAS vehicles and the inside rear face of the LH door on Canadian
specification vehicles.

This label must not be removed from the vehicle. The label information will only define the specification of the vehicle as it
came off the production line. It will not include dealer or owner fitted accessory wheels and tires of differing size from the
original fitment.

If the label is damaged or removed for body repair, it must be replaced with a new label specific to that vehicle. A new label is
requested from Jaguar parts and will be printed specifically for the supplied VIN of the vehicle.

Tire Pressure Monitoring System (TPMS)

The Tire Pressure Monitoring System (TPMS) is a driver assistance system which assists the driver to maintain the tire
pressures at the optimum level. TPMS is standard fitment on NAS vehicles and an optional fitment in other markets. TPMS

7 Initiators 8 TPMS module 9 Instrument cluster


Tire Pressure Monitoring System (TPMS) System Operation

The controlling software for the Tire Pressure Monitoring System (TPMS) is located within a Tire Pressure Monitoring System
Module. The software detects the following:

When the tire pressure is below the recommended low pressure value - under inflated tire.
The location of the tire on the vehicle that is below the recommended pressure.
Malfunction warning.

The TPMS system comprises:

Tire pressure monitoring system module located below the right-hand front seat.
Tire pressure receiver located near the gear shifter within the floor console.
Two front initiators positioned forward of the wheels and behind the fender splash shields.
Two rear initiators positioned rearward of the wheels and assembled on dedicated brackets located behind the fender
splash shields.
Four sensors, each sensor is integral with a tire valve and located within the tire; the space saver spare wheel is not
fitted with a sensor.

The four initiators are hard wired to the TPMS module. The initiators transmit 125 KHz Low Frequency (LF) signals to the tire
pressure sensors which respond by modifying the mode status within the Radio Frequency (RF) transmission. The 315 or 433
MHz RF signals are detected by the tire pressure receiver which is connected directly to the TPMS module. The received RF
signals from the tire pressure sensors are passed to the TPMS module and contain identification, pressure, temperature and
acceleration information for each wheel and tire.

The TPMS module communicates with the instrument cluster via the medium speed CAN bus to provide the driver with
appropriate warnings. The TPMS module also indicates status or failure of the TPMS or components.

Tire Location and Identification

The TPMS can identify the position of the wheels on the vehicle and assign a received tire pressure sensor identification to a
specific position on the vehicle, for example front left, front right, rear left and rear right. This feature is required because of
the different pressure targets and threshold that could exist between the front and rear tires.

The wheel location is performed automatically by the TPMS module using an 'auto-location' function. This function is fully
automatic and requires no input from the driver. The TPMS module automatically re-learns the position of the wheels on the
vehicle if the tire pressure sensors are replaced or the wheel positions on the vehicle are changed.
The TPMS software can automatically detect, under all operating conditions, the following:
one or more new tire pressure sensors have been fitted
one or more tire pressure sensors have stopped transmitting
TPMS module can reject identifications from tire pressure sensors which do not belong to the vehicle
two 'running' wheels on the vehicle have changed positions.

If a new tire pressure sensor is fitted on any 'running' wheel, the module can learn the new sensor identification automatically
through the tire learn and location process.

The tire-learn and location process is ready to commence when the vehicle has been stationary or traveling at less than 12
mph (20 km/h) for 15 minutes. This is known as 'parking mode'. The learn/locate process requires the vehicle to be driven at
speeds of more than 12 mph (20 km/h) for 15 minutes. If the vehicle speed reduces to below 12 mph (20 km/h), the learn
process timer is suspended until the vehicle speed increases to more than 12 mph (20 km/h), after which time the timer is
resumed. If the vehicle speed remains below 12 mph (20 km/h) for more than 15 minutes, the timer is set to zero and process
starts again.

Low Pressure Monitoring

The tire low pressure sensor transmits by RF (315 MHz or 433 MHz depending on market) signal. These signals contain data
which corresponds to tire low pressure sensor identification, tire pressure, tire temperature, acceleration and tire low pressure
sensor mode.

Each time the vehicle is driven, the tire pressure monitoring system module activates each LF antenna in turn. The
corresponding tire low pressure sensor detects the LF signal and responds by modifying the mode status within the RF
transmission.

The system enters 'parking mode' after the vehicle speed has been less than 20 km/h (12.5 miles/h) for 12 minutes. In parking
mode the tire low pressure sensors transmit a coded signal to the tire pressure monitoring system module once every 13
hours. If the tire pressure decreases by more than 0.06 bar (1 lbf/in²) the tire low pressure sensor will transmit more often as
pressure is lost.

As each wheel responds to the LF signal from the tire pressure monitoring system module, it is assigned a position on the
vehicle and is monitored for the remainder of that drive cycle in that position.

Measure the resistance between: C3MC39A, harness side C4MC43, harness side Pin 7 Pin 1 Is the resistance greater than 5 ohms?
Yes
REPAIR the high resistance circuit. This circuit contains
intermediate connector, C44-Y. For additional information, refer to
the wiring diagram. Clear the DTC and run an On Demand Self Test
(ODST) using the manufacturer approved diagnostic system to
confirm rectification.
No
INSTALL a new rear right hand low-frequency initiator. REFER to:
Tire Pressure Monitoring System (TPMS) Rear Antenna (204-04 Wheels and Tires, Removal and Installation).
PINPOINT TEST F : MISSING, INCOMPATIBLE OR DEFECTIVE RUNNING TIRE LOW PRESSURE SENSOR
OR RECEIVER TEST
CONDITIONS DETAILS/RESULTS/ACTIONS F1: CHECK FOR CORRECT WHEEL AND TIRE ASSEMBLY AND TIRE LOW PRESSURE SENSOR 1 Establish that a full size running wheel and tire assembly has a tire low pressure sensor installed. As a visual confirmation, a tire low pressure sensor has a metal valve stem rather than a rubber one and
cannot be installed to a mini/space saver spare wheel. Is a full size wheel and tire assembly with tire low pressure sensor installed?
Yes
GO to F2. No
Install the correct wheel and tire assembly or tire low pressure sensor, of correct frequency, in accordance
with that defined in the manufacturer approved diagnostic system new tire low pressure sensor
application. F2: CHECK FOR ADDITIONAL DTCS 1 Remove the Tire Pressure Monitoring System power supply fuse and re-install it. Clear DTCs and leave the vehicle stationary for 15 minutes, then drive it at a speed greater than 15.5 mph (25 kph)
continuously for at least 10 minutes.
(Note: If the vehicle speed drops below this value, the drive time to complete the test will need to be increased.)

The use of the manufacturer approved diagnostic system, and the datalogger signal ’Tire pressure
monitor system status – learn mode status’ will verify the completion of the test when the value returns
to ‘Inactive’. 2 Check for additional DTCs C1A5631, C1A5831, C1A6031, C1A6231, with identical time stamps. Have all four DTCs logged with identical time stamps in the tire pressure monitoring system module?
Yes
Replace the tire pressure monitoring system radio frequency receiver.
REFER to: Tire Pressure Monitoring System (TPMS) Receiver (204-04 Wheels and Tires, Removal and Installation).
No
GO to F3. F3: VERIFY THE POSITION OF THE DEFECTIVE TIRE LOW PRESSURE SENSOR 1 Check tire pressure monitoring system DTCs. Are any C1AXX31 DTCs logged?
Yes
Install the correct tire low pressure sensor, of correct frequency, in accordance with that defined in the
manufacturer approved diagnostic system new tire low pressure sensor application, to the position
identified by the logged DTC.
REFER to: Tire Low Pressure Sensor (204-04 Wheels and Tires, Removal and Installation). No
No further action is required.
(Note: The use of the manufacturer approved diagnostic system, and the datalogger signal ’Tire pressure monitor system status – learn completed successfully’ will verify the successful completion of the test.)
PINPOINT TEST G : LOCALIZATION FAILURE TEST
CONDITIONS DETAILS/RESULTS/ACTIONS G1: CHECK FOR ADDITIONAL DTCS 1 Check for additional DTCs: C1A5711, C1A5712, C1A5713. C1A5911, C1A5912, C1A5913, C1A6111, C1A6112, C1A6113, C1A6311, C1A6312, C1A6313. Are any of the DTCs listed above also logged?
Yes
Refer to the DTC Index and remedial actions.
No
GO to G2. G2: CHECK FOR ADDITIONAL DTCS

Published: 11-May-2011
Vehicle Dynamic Suspension - Vehicle Dynamic Suspension V8 5.0L Petrol/V8 S/C 5.0L Petrol - Overview
Description and Operation

OVERVIEW

Adaptive Dynamics - Supercharged Vehicles from 2010MY

The adaptive dynamics system, is an electronically controlled suspension system which constantly adjusts the damping
characteristics of the suspension dampers in reaction to the existing driving conditions. The adaptive dynamics system is
available on specified models.

The system is controlled by an Adaptive Damping Module (ADM), located beneath the right-hand front seat. The module
receives signals from three dedicated vertical accelerometers; two at the front of the vehicle and one at the rear, which,
together with four suspension height sensors, determine the state of the body and wheel motions. In addition to these inputs,
further signals from other vehicle electronic system components to determine vehicle state and driver inputs are monitored by
the adaptive damping module. These combined signals are used by the adaptive damping module to continuously adjust the
damping characteristics of each of the suspension dampers in reaction to the current driving conditions to give the optimum
body control and vehicle ride.

7 Rear accelerometer 8 Instrument cluster 9 JaguarDrive selector module 10 ABS (anti-lock brake system) module 11 TCM (transmission control module) 12 ECM (engine control module) 13 RH (right-hand) rear damper 14 RH front damper 15 LH (left-hand) front damper 16 LH rear damper 17 LH rear suspension height sensor 18 RH rear suspension height sensor 19 LH front suspension height sensor 20 RH front accelerometer 21 RH front suspension height sensor 22 Adaptive damping module 23 LH front accelerometer


PRINCIPLES OF OPERATION System Operation

The adaptive damping module uses a combination of information from other system modules and data from the accelerometers
and suspension height sensors to measure the vehicle and suspension states and driver inputs. Using this information, the
adaptive damping module applies algorithms to control the dampers for the current driving conditions.
The adaptive damping module receives signals on the high speed CAN bus from the following system components: Brake Pressure - ABS module. Brake Pressure Quality Factor - ABS module. Car Configuration Parameters - AJB. Center Differential Range Actual - ECM. Engine Speed - ECM. Engine Speed Quality Factor - ECM. Engine Torque Flywheel Actual - ECM. Engine Torque Flywheel Actual Quality Factor - ECM. Gear Position Target - TCM. Lateral Acceleration - ABS module. Power Mode (Ignition Signal) - CJB. Power Mode Quality Factor - CJB. Roll Stability Control Mode - ABS module. Steering Wheel Angle - ABS module. Steering Wheel Angle Speed - ABS module. Steering Wheel Angle Status - ABS module. Terrain Mode Requested - JaguarDrive selector.
Torque Converter Slip - TCM. Vehicle Information Parameters HS - AJB Vehicle Speed - ABS module. Vehicle Speed Quality Factor - ABS module. Front Left Wheel Speed - ABS module. Front Left Wheel Speed Quality Factor - ABS module. Front Right Wheel Speed - ABS module. Front Right Wheel Speed Quality Factor - ABS module. Rear Left Wheel Speed - ABS module. Rear Left Wheel Speed Quality Factor - ABS module. Rear Right Wheel Speed Quality Factor - ABS module. Rear Right Wheel Speed - ABS module. The adaptive damping module also outputs information on the high speed CAN bus for use by other systems as follows: Fault Message - instrument cluster.
Terrain Mode Change Status - JaguarDrive selector.
Terrain Mode - JaguarDrive selector.

The adaptive damping module monitors the input signals and operates the damper solenoids. The input signals are used in
control modes and a force required for each damper for that mode is calculated. An arbitration mode monitors the force
requirements from each mode and apportions a force to a damper. The force is converted to the appropriate current and sent to
the damper.
The control modes are as follows: