Ride and Handling Optimization Land Rover Range Rover Sport I

SPECIFICATIONS

GENERAL SPECIFICATIONS

TORQUE SPECIFICATIONS

Scheme 1

GENERAL

The Terrain Response™ system allows the driver to select a program which aims to provide the optimum settings for traction and performance for the prevailing terrain conditions. The system cannot be switched off. The 'special programs off' is the default program and covers all general driving conditions. Four specific terrain programs are selectable to cover all terrain surfaces.

The system is controlled by a rotary control located on the center console, rearward of the selector lever (automatic transmission) or gearshift lever (manual transmission). The rotary control allows the selection of one of the following five programs

1. Special programs off
2. Grass/Gravel/Snow
3. Mud/Ruts
4. Sand
5. Rock crawl.

The rotary control can be rotated through 360 degrees or more in either direction and selects each program in turn. When Terrain Response is fitted to a vehicle the instrument cluster will display the selected program in the message center.

The Terrain Response system uses a combination of a number of vehicle subsystems to achieve the required vehicle characteristics for the terrain selected. The following subsystems make up the Terrain Response system

1. Engine management system
2. Automatic transmission (if fitted)
3. Transfer box (center differential)
4. Rear differential (electronically controlled)
5. Brake system (ABS/DSC/ETC/HDC functions)
6. Air suspension.

A Terrain Response control module is located below the rotary control. The control module detects the selection made on the rotary control and transmits a signal on the high speed CAN which is received by each of the subsystem control modules.

Each of the affected sub-system control modules contain software which applies the correct operating parameters to their controlled system for the Terrain Response program selection made.

Each sub-system control module also provides a feedback for the selected program so that the Terrain Response control module can check that all systems have changed to the correct operating parameters.

Information is displayed in the instrument cluster message center which informs the driver of improvements which can be made to the vehicle operating parameters to optimize the vehicle for the prevailing conditions. Inexperienced off-road drivers may benefit from the automatic assistance of the Terrain Response system and the driver information. Experienced off-road drivers can select the specific programs for extreme conditions to access control over the vehicle systems (e.g., throttle shift maps or traction settings) which are not accessible on vehicles without Terrain Response.

Scheme 2

The Terrain Response rotary control is located in the center console and allows the selection of five operating programs. Each program is denoted by a symbol which represents the terrain encountered. The rotary control can be depressed downwards to lock it in a position flush with the trim surround. A second push of the control releases the lock and the control emerges from the surround allowing it to be rotated.

The rotary control can be rotated to select the required program. The control will only select the last program in its direction of rotation. Further rotation of the control once the last program in either direction has been selected, will have no effect, e.g. once rock crawl has been selected, further rotation in a clockwise direction will have no effect.

The Terrain Response control module is located below the rotary control. The module is connected via a harness connector which also contains the wiring for the HDC switch, the transfer box high/low range switch, the air suspension switch and the switch illumination circuits. The control module and switch uses four of these wires for a 12V battery supply when the ignition switch is in ignition position II, a ground and high speed CAN positive and negative.

TERRAIN RESPONSE OPERATION

The following vehicle subsystem control modules are used for the Terrain Response system

1. Engine management (engine control module)
2. Transmission control (transmission control module - automatic transmission only)
3. Transfer box control (transfer box control module)
4. Rear differential control (rear differential control module - if fitted)
5. Air suspension control (air suspension control module)
6. Brake system (ABS/DSC/ETC/HDC functions) (ABS module)

Each subsystem operates in different ways in relation to the selected Terrain Response program to achieve the optimum traction, stability and ease of control for the terrain encountered. The system has a safety factor built in which ensures that any program can be safely used on any surface, even when an inappropriate program selection has been made.

Engine Management System (EMS)

The EMS varies the throttle pedal response to control the engine torque output. The EMS can change the throttle maps to change the amount of torque per percentage of pedal travel. The EMS can also change the throttle response to control the allowed torque change relative to the percentage pedal travel.

Each terrain program uses a combination of operating parameters for each subsystem. Changing between terrain programs initiates a different set of operating characteristics which will be noticeable to the driver. The driver will notice differences in engine and throttle response when, for example, the throttle pedal is held in a constant position and the terrain program is changed from grass/gravel/snow to sand, the driver will notice the torque and engine speed increase. If the terrain program is changed from sand to grass/gravel/snow the driver will notice a reduction in torque and engine speed.

Note. The change in torque and engine speed can take approximately 30 seconds and care must be taken not to confuse the Terrain Response system operation with an EMS fault.

Transmission Control

The transmission control module changes the shift maps for the Terrain Response program selected. This changes the shift points providing early or late upshifts and downshifts.

On slippery surfaces the transmission will select 2nd gear in high range or 3rd gear in low range for starting from a standstill to minimize wheel slip. In muddy conditions the transmission will provide maximum torque output from the transmission. In sand the transmission will provide an output which passes maximum engine power from the transmission.

In rock crawl special program (low range) the transmission will select 1st gear for driving off.

Sport mode is only available when the general program is selected and the transfer box is in high range. Sport mode is disabled in low range and all Terrain Response special programs. CommandShift™ is available in any program and also in high or low range.

If the transmission is in 'Sport' mode and a special program is subsequently selected, the transmission will automatically change to manual 'CommandShift™' mode. If a special program is already selected and the transmission selector lever is moved from drive 'D' to the 'Sport' mode position, the transmission will automatically change to 'CommandShift™' mode.

Transfer Box and Rear Differential Control

The transfer box electronically controlled differential and the rear electronically controlled differential (if fitted) are treated as one system. The electronic rear differential is an optional fitment on vehicles fitted with the Terrain Response system. The differential control has two operating strategies; pre-emptive and reactive.

The pre-emptive strategy anticipates and predicts the locking torque value required for each differential to minimize slip and maximize stability. Each Terrain Response program has a different threshold and input criteria for the pre-emptive strategy. The pre-emptive strategy improves vehicle traction and composure by avoiding wheel spin. This is achieved by anticipating the amount of differential lock required for the program selected. For example, a high locking torque would be applied for rock crawl or slippery surfaces.

The reactive strategy varies the amount of locking torque in response to the actual slip level and the dynamic behavior of the vehicle. Each Terrain Response program has a different threshold and input for the reactive strategy. The reactive strategy improves vehicle traction and composure by eliminating any wheel spin which has occurred after the pre-emptive strategy was applied. The locking response applied is applicable to the terrain program selected, for example, very sensitive on slippery surfaces to provide maximum traction and minimize surface damage.

The locking torque calculations use various signals from other subsystems, for example, engine torque, throttle position, selected gear, steering angle, vehicle speed, lateral acceleration and yaw behavior.

The Dynamic Stability Control function of the ABS system can override the Terrain Response differential control and reduce any applied locking torque during DSC action.

For additional information, refer to: ANTI-LOCK CONTROL - TRACTION CONTROL .

Air Suspension Control

The air suspension control module contains a strategy which provides automatic switching between normal and off-road heights. Changes in vehicle height settings will be relayed to the driver via the instrument cluster message center and LED illuminated icons on the switch. The automatic selection and deselection of the vehicle height provides automatic increase and decrease in ground clearance and aims to provide maximum benefit to the selected terrain program.

On a vehicle fitted with a correctly installed, Land Rover approved trailer socket, if an electrical load is sensed on the trailer socket, height changes are prohibited and the message center displays a message advising that a trailer is connected and off-road height is not automatically selected. The driver can raise the suspension manually using the air suspension switch.

Note. The prohibiting of the automatic ride height selection is only operational if a Land Rover approved trailer socket is fitted and an electrical load is sensed on the socket.

ABS Control

The ABS module controls several vehicle functions and adjusts the operating parameters of these functions to optimize the selected Terrain Response program.

Traction control uses different slip/acceleration thresholds to improve traction and vehicle composure. For example, the system sensitivity is increased on slippery surfaces to reduce wheel spin.

If DSC is switched off (with the DSC switch on the instrument panel) when using a Terrain Response special program, if the special program is subsequently changed for a different program DSC is automatically switched back on.

The stability control uses different threshold values for the selected program to automatically reduce DSC intervention, removing the requirement for the driver to disable the DSC system in order to reduce engine intervention which is sometimes induced in extreme off-road conditions. In extreme sand conditions, there may be an additional benefit of disabling the DSC function using the DSC switch on the instrument panel in addition to selecting the sand program.

HDC is automatically switched on or off and target speeds are adjusted in response to the Terrain Response program selected. The responsiveness of the HDC function is also increased where required.

Automatic operation of HDC aims to assist the driver by switching the system on or off when it is of most benefit. Target speeds for HDC operation are also adjusted according the vehicle operating conditions.

Incorrect Program Usage

Selection of an inappropriate program is discouraged in the following ways

1. The active program icon is continually displayed in the instrument cluster message center
2. The Terrain Response control module 'locks' out certain functions in some programs, e.g.
3. cruise control is only available with the special programs off or grass/gravel/snow program
4. transmission 'Sport' mode is deactivated in all special programs.
5. In any special program, except the grass/gravel/snow program, when the ignition has been in the off position, continually for more than six hours, the Terrain Response system defaults to the Special Programs off. When in the grass/gravel/snow program, the Terrain Response system will never default to the Special Programs off. This is to allow for drivers in cold climates where continuous use of the grass/gravel/snow program would be beneficial.
6. The rock crawl program is only available with the transfer box in low range.

Selection of an inappropriate program for the terrain conditions will not endanger the driver or cause damage to the vehicle. Continued use of an inappropriate program may reduce the life of some components. The driver may notice reduced vehicle response, with the engine and transmission being less responsive than in the special programs off. Also, in some programs, HDC will remain on, signified by illumination of the HDC indicator in the instrument cluster. The driver may also notice torque 'wind-up' in the center and rear differentials causing a 'braking' effect when the vehicle is maneuvered in some special programs.

The use of the special programs in the Terrain Response system is monitored by the Terrain Response control module which records the mileage and time the vehicle has operated in a specific program in high and low range. This information can be retrieved using T4 and used by the dealer technician to check customer concerns, e.g. high fuel consumption which may be due to continued use of a certain program.

Driver Information

The instrument cluster contains a message center which displays vehicle information to the driver. The message center contains the Terrain Response program icons which display the currently selected program. If no symbol is displayed, no special program is selected and the system is in special programs off.

Any required changes to the subsystems are also passed to the driver in the form of indicator illumination in the instrument cluster or appropriate messages in the message center, HDC off or air suspension height change for example.

In certain operating conditions, the Terrain Response system also displays advice or warning messages to ensure the driver is using the vehicle to its full potential, e.g.

1. Steering angle is displayed in the message center to avoid driving in deep ruts with steering lock applied
2. gear information is displayed to recommend a gear for slippery conditions
3. if the system automatically provided off road ride height, but the driver subsequently lowers the vehicle to normal height, then the system may advise that this will cause a risk of grounding.

The messages which can be displayed in the instrument cluster message center are detailed in the Information and Message Center section.

For additional information, refer to: INFORMATION AND MESSAGE CENTER .

DIAGNOSTICS

The Terrain Response control module stores information on detected Terrain Response faults and CAN errors which can be interrogated using T4. The Terrain Response sub-systems and the instrument cluster also store fault information relating to CAN errors from the Terrain Response control module.

The control module also stores the miles travelled and time elapsed in high range for the individual programs and in low range for use of all programs which can also be retrieved using T4. This information aids diagnosis of the Terrain Response system and also provides an indication of Terrain Response system abuse by the driver which can lead to premature component failure.

Terrain Response System Fault Diagnosis

Terrain Response relies on the correct functionality of the five sub-systems. If one of the sub-systems develops a fault, the Terrain Response system will not function, even though the fault is not in the Terrain Response system. The Terrain Response control module and rotary control should only be investigated if there are no apparent faults in any of the sub-systems. If a fault in a sub-system is subsequently corrected, the Terrain Response system will function normally after an ignition on and off cycle.

Terrain Response Sub-System Faults

If a fault occurs in a sub-system, the driver is alerted by the illumination of a warning indicator and/or an appropriate message for that sub-system in the instrument cluster message center. There will be no warning of a Terrain Response system fault.

When a sub-system fault is present and the driver attempts to select a different Terrain Response program using the rotary control or at the next ignition on cycle, a message 'SYSTEM FAULT SPECIAL PROGRAMS NOT AVAILABLE' will appear in the message center. This implies that the Terrain Response system has a fault, but only because a sub-system fault is preventing its operation. This message will be displayed for 5 seconds per ignition cycle, but is repeated if a further selection is made by the driver using the Terrain Response rotary control or at the next ignition on cycle.

Note. The message 'SYSTEM FAULT SPECIAL PROGRAMS NOT AVAILABLE' can also be generated by a fault in the Terrain Response rotary control or control module. See following section for details of rotary control or control module faults.

It is not possible for the Terrain Response control module to cause any fault behavior (warning indicator illumination or message generation) in any of the five sub-systems. Illumination of a sub-system warning indicator and/or a sub-system related message will never be associated with a Terrain Response control module or Terrain Response system fault.

The sub-system control modules can detect a fault with the CAN signal from the Terrain Response control module. If a fault in the Terrain Response system is detected, the sub-system control modules will operate in the 'special programs off' setting. The sub-system control modules will record a fault code for a failure of the Terrain Response CAN signal. These faults can be retrieved using T4 and will provide useful information to indicate investigation of the Terrain Response control module or the CAN network.

Terrain Response Rotary Control or Control Module Fault

If a fault occurs in the Terrain Response rotary control, all rotary control icon amber LEDs will be turned off (background illumination will remain on) and rotation of the rotary control is ignored. The instrument cluster message center will display a message 'SYSTEM FAULT SPECIAL PROGRAMS NOT AVAILABLE' when the fault occurs, if the fault is present and the driver attempts to select a special program (if the control module is able to do this) or at the next ignition on cycle.

If a failure of a rotary control icon amber LED occurs, the Terrain Response system will still function. Any selected special program will default to 'special programs off' at every ignition on cycle, with the exception of the grass/gravel/snow program.

The Terrain Response rotary control and the control module are an integral unit. If a fault occurs in either component, the whole unit will require replacement.

CAN Faults

If a CAN fault exists and prevents Terrain Response system operation, all of the Terrain Response rotary control icon LEDs will be illuminated and rotation of the rotary control is ignored.

If the instrument cluster does not receive a Terrain Response system CAN message from the Terrain Response Control module, the message 'SYSTEM FAULT SPECIAL PROGRAMS NOT AVAILABLE' will be displayed when the fault occurs and will be repeated at every ignition on cycle.

User Error

The following incorrect usage of the system may be misinterpreted as a system fault

1. Engine not running - Program changes and driver advisory messages are only available with the engine running
2. Rock crawl program selected but transfer box in high range
3. Special program change attempted with DSC or ABS active (this includes ABS cycling which is operational when HDC is being used on slippery or loose surfaces).
4. Special program change attempted with overheat condition present on center or rear differential.

DYNAMIC RESPONSE COMPONENT LOCATION

Note. Left Hand (LH) drive TdV6 shown, other models similar

OVERVIEW

The Dynamic Response system provides improved vehicle handling and ride characteristics and is active for both on and off-road driving.

The Dynamic Response system uses two accelerometers to detect vehicle cornering forces and inputs from the steering angle sensor to supply data to a dynamic response control module. The control module then operates solenoid valves in a valve block which apply hydraulic pressure to actuators fitted to the front and rear stabilizer bars. The application of hydraulic pressure to the actuators applies a specified amount of torque to the stabilizer bars to counteract the cornering forces and minimize vehicle body roll.

The following illustrations demonstrate the difference in body angle between a conventional 'passive' (non-Dynamic Response) stabilizer bar vehicle and a vehicle fitted with the Dynamic Response system.

Scheme 3

Scheme 4

The Dynamic Response system is electrically and hydraulically operated. Electrical and hydraulic operation is controlled by the Dynamic Response control module which is located on the driver's side 'A' pillar, behind the instrument panel.

The Dynamic Response system comprises front and rear stabilizer bars with integral actuators, two accelerometers, a control module, a hydraulic pump, a valve block and a fluid reservoir.

The Dynamic Response system prevents body roll with cornering forces of up to 0.4 g. From 0.4 g there is a progressive increase in body roll but significantly lower than on a 'passive' system. A 'passive' system will have a progressive increase in body roll angle as soon as cornering forces are applied and will have a greater roll angle than the Dynamic Response system for the same cornering force.

The Dynamic Response system can also detect when the vehicle is driven off-road. If off-road conditions are detected and the vehicle is traveling at 25 mph (40 km/h) or less, the control module will reduce roll compensation. On side slopes of more than 11 degrees the Dynamic Response system will switch to a 'locked bars' condition at slow speed.

Lateral acceleration of the body is sensed by two accelerometers and signals from these are transmitted to the control module. The engine driven hydraulic pump supplies a constant hydraulic flow to the valve block. Two directional control valves are solenoid operated by the control module and supply hydraulic pressure to the applicable side of each actuator to apply a force equal to and opposite to the force applied to the stabilizer bar. In operation the Dynamic Response system maintains the attitude of the vehicle body when cornering.

The Dynamic Response hydraulic system uses a semi-synthetic hydraulic fluid which is the same fluid used in the power steering system. The total capacity of the Dynamic Response system is 2.50 liters (0.66 US gallons).

1. Dynamic Response components are thoroughly cleaned externally before work commences
2. All opened pipe and component ports are capped immediately
3. All fluid is stored in clean containers.

In the event of a control module or hydraulic failure the system will 'fail-safe' to a 'locked bars' condition. The 'locked bars' condition will allow the stabilizer bars to operate in a similar manner as conventional 'passive' stabilizer bars. Prolonged cornering forces will allow a progressive increase in roll angle due to hydraulic leakage through the actuators and valve block. Failures of the system are relayed to the driver by illumination of the air suspension/dynamic response warning indicator in the instrument cluster, an audible warning chime and a message displayed in the instrument cluster message center. Faults are recorded by the control module and can be retrieved using a Land Rover approved diagnostic system.

When the ignition switch is moved to position II, the warning indicator is illuminated for two seconds to check functionality. The warning indicator functionality can also be checked using a Land Rover approved diagnostic system.

A Land Rover approved diagnostic system must also be used to perform a bleeding procedure after repair or maintenance operations have been performed. This is to ensure that the system is completely free from air. Trapped air in the system can significantly reduce system performance.

FLUID RESERVOIR

The fluid reservoir is located in the front right hand side of the engine compartment. The reservoir is attached to the front of air cleaner housing by two slotted rails which positively locate the reservoir.

The reservoir is a molded plastic container with a threaded neck which is fitted with a sealed cap. Two connections on the bottom of the reservoir provide for connection of the feed pipe to the pump and the return pipe from the valve block.

A non-serviceable filter assembly is fitted to the base of the reservoir. The filter is made from a fine nylon mesh which is molded into the bottom of the reservoir. The filter removes particulate matter from the fluid before it is drawn into the pump.

Upper and lower fluid level marks are molded onto the reservoir body. The capacity of the reservoir to the upper level mark is 0.4 liter (0.11 US gallon).

DYNAMIC RESPONSE PUMP

The Dynamic Response hydraulic pump is located on the RH side of the engine. The pump is attached to a mounting bracket below the generator on TdV6 and TdV8 engines and above the generator on V8 petrol engines. On both engines the pump is driven by the accessory drive belt from the crankshaft.

Scheme 5

The hydraulic pump is driven at approximately 1.7 times crankshaft speed by the auxiliary drive belt. The pump is a radial piston type which delivers fluid at high pressures.

The radial pump has eight pistons located in bores in a cylinder housing. A balanced central shaft, which is driven by a pulley and the auxiliary drive belt, has a cam which operates the pistons as the shaft rotates.

As the cam lobe reaches each piston, the piston is pushed outward, moving the fluid above the piston. The pressure created by the fluid flow from the bore opens a spring loaded discharge valve. When the valve opens, the now pressurized fluid flows, via the silencer volume area of the cylinder housing, to the outlet port. The silencer volume assists with damping out operating noise from the pump. When the piston reaches its full stroke, the flow reduces and the discharge valve closes under spring pressure.

As the cam lobe moves away from the piston, a spring pushes the piston down the bore, creating a vacuum above the piston. As the piston moves down the bore, ports in the piston are exposed and connect with the fluid inlet port. The vacuum draws fluid into the piston filling the piston and the chamber above it. As the piston is again pushed upwards, the ports in the piston are closed off by the bore and the pressurized fluid opens the discharge valve and flows to the outlet port.

The above sequence is applied to each of the eight pistons for every revolution of the shaft and cam. When the engine is running the sequence occurs rapidly creating a constant flow of fluid. The fluid flow varies with engine speed and the rotational speed of the shaft. The pressure applied to the actuators, created by the flow from the pump, is controlled by the pressure control valve in the valve block.

The pump has a displacement of 6cm 3 /rev and an operational pressure of 165 bar (2248 lbf/in 2 ). The pump output flow ranges from 6.5 l/min (1.7 US Gallons/min) at idle to 10 l/min (2.64 US Gallons/min) at 1000 rev/min and above.

DYNAMIC RESPONSE VALVE BLOCK

The valve block is located below the RH sill of the body and is secured with three bolts and rubber bushes to captive nuts located in the chassis. The rubber bushes isolate the valve block preventing hydraulic noise from transmitting through the body.

Scheme 6

The valve block directs hydraulic pressure to the actuators via solenoid operated directional control valves. A solenoid operated pressure control valve regulates the required pressure to the actuators. The three solenoid valves are controlled by signals received from the dynamic response control module. A pressure transducer monitors the pressure generated by the Pressure Control Valve (PCV). A serviceable high pressure filter is installed into the underside of the valve block and filters the hydraulic fluid before it reaches the control valves. The filter must be changed at the intervals defined on the vehicle service schedule.

The two Directional Control Valves (DCV's) are fitted to ports in the top face of the valve block. The DCV's are screwed into the valve block and are sealed with O rings. Each DCV has a solenoid for electrical operation of the valve. The solenoid is sealed to the DCV with two O rings and secured with a threaded nut. The nut, coil and O rings are serviceable parts. The DCV's are non-serviceable and failure of a DCV requires replacement of the valve block assembly.

The PCV is fitted to a port in the rear facing end of the valve block. The PCV is screwed into the valve block and is sealed with O rings. The PCV has coil for electrical operation which is sealed to the PCV with two O rings and secured with a threaded nut. The nut, coil and O rings are serviceable items. The PCV is non-serviceable and failure of the PCV requires replacement of the valve block assembly.

The pressure transducer is located in the forward facing end of the valve block and is sealed with an O ring. The pressure transducer measures the hydraulic pressure and returns a signal to the Dynamic Response control module.

A high pressure filter locates in a port on the lower face of the valve block. The gauze and fibre filter is sealed in the port with O rings and is secured with a threaded cap which is also sealed with an O ring. A threaded hole in the lower face of the filter allows a bolt to be fitted to remove the filter from the port. If a system hydraulic component is replaced, the filter must also be replaced.

Four ports are located on the forward facing end of the valve block and two ports on the opposite end. Each port is fitted with a seal pack which contains two O rings and backing rings. The pipes locate and seal in the seal packs and are secured to the valve block with studs and nuts.

ACTUATORS AND STABILIZER BARS

Two stabilizer bars with integral hydraulic actuators are used for the Dynamic Response system. The actuators apply a hydraulically generated force or rotational torque to the stabilizer bar to oppose lateral forces caused by the vehicle cornering.

Scheme 7

Each actuator has a piston which is attached to the inner part of a rotor linear ball screw, which is splined to half of the stabilizer bar. The outer part of the ball screw is crimped and welded into a housing which is attached to the other half of the stabilizer bar. As pressure is applied to one side of the piston or the other, the ball screw converts the linear force applied to the piston into a rotational torque between the two halves of the stabilizer bar.

Scheme 8

Scheme 9

Note. TdV8 models are fitted with a different rear actuator to that fitted to TdV6 or petrol V8 models. The TdV8 actuator has a larger internal piston diameter and care must be taken in service to ensure that the correct part is fitted.

Note. On vehicles from 2007MY, the positions of the front actuator ports have been moved and therefore care must be taken to ensure the correct parts are fitted in service.

Two hydraulic connections provide for the attachment of the hydraulic pipes from the valve block. The connections provide hydraulic flow to each side of the actuator piston.

The front and rear actuator assemblies are similar in their construction, with the rear actuator being smaller than the front. Each stabilizer bar is made from 34 mm (1.34 in) diameter spring steel bar.

The actuator assembly and the stabilizer bars are not serviceable items. Only the stabilizer bar attachment bushes, brackets and stabilizer links are serviceable components.

The front stabilizer links are not handed on the front stabilizer bar and are also common to vehicles not fitted with Dynamic Response. The rear stabilizer links are unique to vehicles with Dynamic Response. The Dynamic Response rear links are identified by a gray color plastic bearing molding. The passive (non-Dynamic Response) links can be identified by a white colored plastic bearing molding.

The front stabilizer bar and actuator is attached to a chassis strengthening member known as the secondary load path and to the front cross-member. Two serviceable, split rubber bushes are fitted to the stabilizer bar and are located in cast brackets. Each bracket is secured to the secondary load path with two bolts and to the front cross-member with a third bolt.

The rear stabilizer bar and actuator is attached to fabricated brackets which are located on the outside of the chassis side members, forward of the rear wheels.

Two rubber bushes are fitted to each stabilizer bar and are located in clamp brackets. The front and rear bushes and brackets are not interchangeable.

On both the front and rear stabilizer bars, roll correction force is transmitted to the suspension arm via ball jointed stabilizer bar links. The front links are attached to the front suspension upper arm and the rear links are attached to the rear lower arm.

Each front stabilizer link is fitted with a hardened steel washer which is located between the stabilizer bar and the link ball joint and the upper arm and the link ball joint. It is important that these washers are in the correct position and the correct, hardened washers are fitted. Failure to fit the washers or using incorrect washers will result in relaxation of the torque on the self-locking nut and damage will be caused to the stabilizer bar, link and suspension upper arm.

SYSTEM PIPES

Fluid is moved through the Dynamic Response system via a series of six pipes and hoses. The pipes are mounted on brackets at strategic points to provide quiet operation of the system.

The six pipes connecting the pump, reservoir and actuators are one-piece components. If the pipes require replacement during service, the pipes are supplied individually and are removed and replaced in one piece. The front and rear pipes require the body to be lifted slightly to allow access for removal and replacement.

On TdV8 models from 2007MY, the high pressure hose and pipe from the pump to the valve block are available as two separate service parts. The high pressure hose has a quick release connector located in a position below the Air Conditioning (A/C) compressor. This allows the hose to be split into two parts to assist with service repairs. The connector is sealed with an O-ring and a back-up ring which are available as service items. A special tool is required to separate the connector. The tool is inserted into a slot in the connector, which separates the two components. It is not necessary to use the tool as a lever to 'push' the two components apart.

The flexible high pressure hose which supplies pressure from the pump to the high pressure pipe is fitted with attenuators. The attenuators comprise of tuned lengths of PTFE pipe and restrictors within the flexible hose. The attenuators damp pressure pulsations in the hydraulic fluid produced by the pump, reducing noise and strain on components downstream. The attenuator is integral with the high pressure hose and cannot be serviced separately.

DYNAMIC RESPONSE CONTROL MODULE

The Dynamic Response control module is located on the driver's side 'A' pillar, behind the instrument panel. The control module is secured to the vehicle body with two screws. Two connectors are located on the rear face of the control module and allow for the connection of the harness connectors. The two connectors supply power, ground, signal and sensor information to and from the control module for control of the Dynamic Response system.

On vehicles from 2007MY, the Dynamic Response control module contains 2 tunes; One for TdV6 and V8 petrol models and one for TdV8 models. When a replacement control module is fitted, the correct tune is selected from the data contained within the Car Configuration File (CCF) retained in the instrument cluster.

Scheme 10

The Dynamic Response control module receives a power supply from the main relay via fuse 9E in the Battery Junction Box (BJB).

An engine speed signal is transmitted to the control module from the Engine Control Module (ECM) via the high speed Controller Area Network (CAN) bus. The engine speed signal is used by the Dynamic Response control module to detect that the engine is running and hydraulic pressure for the Dynamic Response system is available.

A road speed signal is transmitted to the control module from the ABS module on the high speed CAN. A steering angle signal is transmitted on the high speed CAN bus from the steering angle sensor. The Dynamic Response control module uses the road speed and steering angle signals to calculate lateral acceleration and for on and off-road roll compensation.

When reverse gear is selected and reverse wheel rotation is transmitted on the high speed CAN bus, the Dynamic Response system reverts to a 'locked bars' condition. This condition is maintained until reverse gear is deselected and a forward wheel rotation message is transmitted on the CAN bus.

The Dynamic Response control module receives an ignition on signal on the high speed CAN bus. The ignition signal provides an input into the control module to inform the control module that the ignition switch is in position II. The control module initiates a 250 ms start time which is used to prevent functions operating when the software routines are being initialized.

When the ignition on CAN signal is removed, the control module senses that the ignition has been switched off. The control module remains powered for a 30 second period to allow fault information and adaptive values to be stored in the memory. The values and fault information are read by the control module when the ignition is next switched on. The power supply to the control module is maintained for as long as the main relay remains energized.

The Dynamic Response control module is connected on the high speed CAN bus to the diagnostic socket which allows diagnostic interrogation of the control module. The diagnostic socket allows for the connection of a Land Rover approved diagnostic system to read any stored fault codes in the control module. The control module can also be updated with revised software using a Land Rover approved diagnostic system should a software update be required.

When system faults are detected, the control module issues a message on the CAN bus which is received by the instrument cluster. The instrument cluster then illuminates the air suspension/Dynamic Response warning indicator as follows

1. Minor faults - warning indicator illuminated in an amber color with an applicable message in the message center
2. Major faults - warning indicator illuminated in a flashing red color with an applicable message in the message center and an audible warning. The message will instruct the driver to stop the vehicle immediately or drive with caution.

Two messages relating to Dynamic Response are displayed in the instrument cluster message center

1. SUSPENSION FAULT, VEHICLE LEAN, WHEN CORNERING
2. SUSPENSION FAULT, STOP SAFELY, STOP ENGINE.

The Dynamic Response control module supplies a control current to the Pressure Control Valve (PCV) in the valve block. The current supplied is determined by a number of input signals from the upper and lower accelerometers, road speed, steering angle etc.. The PCV controls the hydraulic pressure supplied to the actuators proportional to the current supplied by the control module.

Power is supplied to the two solenoid operated Directional Control Valves (DCV) in the valve block by the control module. Together, the two DCV's control the direction of flow of hydraulic fluid to the actuators. When the control module supplies power to the solenoids the valves open allowing hydraulic fluid to flow to the actuators. When power is removed, the DCV's close. DCV1 is left open for left hand corners and DCV2 is opened for right hand corners.

The pressure transducer located in the valve block receives a 5V current from the control module. The transducer measures the hydraulic pressures in the range of 0 to 180 bar (0 to 2610 lbf/in 2 ) and returns a linear output voltage to the control module dependant on the hydraulic pressure.

The Dynamic Response control module supplies a 5V current to each of the accelerometers. Each accelerometer is capable of measuring lateral acceleration in the range of ± 1.11 g. An analogue input to the control module of between 0.5 and 4.5V relative to the lateral acceleration sensed is returned by each accelerometer. The control module processes the two signals received, together with the steering angle and vehicle speed signals, to produce a 'pure' lateral acceleration signal which is then used as the main control signal for the Dynamic Response system.

Failure Modes

Failures where the vehicle can still be driven safely are indicated by the air suspension/Dynamic Response warning indicator in the instrument cluster illuminating continuously in an amber color. The amber indicator will remain illuminated until the ignition is switched off. For all faults, the warning indicator will only illuminate again if the fault is still present.

Failures which require the driver to stop the vehicle immediately are indicated by the air suspension/Dynamic Response warning indicator flashing in a red color and an audible warning. This will also be accompanied by an applicable message displayed in the message center.

All faults are recorded by the control module and can be retrieved using a Land Rover approved diagnostic system. The diagnostic system provides a description of the fault, possible causes and corrective action to rectify the fault. The control module can fail to one of two states; 'locked bars' or 'reduced operation'.

The 'locked bars' condition means that pump flow is directed through the valve block and returns to the reservoir. Both DCV's close, trapping the fluid in the actuators. The fluid can flow from one actuator to the other via the valve block. The stabilizer bars will perform similar to a conventional stabilizer bar, resisting roll but still allowing suspension articulation.

The 'reduced operation' condition means that the system can still operate, but one of the input signals is not being received and so the system performance is not optimum.

If the steering angle sensor develops a fault or is out of calibration, there is a possibility that the dynamic response control module will record a fault code. A Land Rover approved diagnostic system should be used to check for fault codes and the adaptive data should be cleared by resetting the fault codes in the control module after the steering angle sensor has been recalibrated. For additional information, refer to: ANTI-LOCK CONTROL - TRACTION CONTROL .

ACCELEROMETERS

Two accelerometers are used; an upper and a lower. Both accelerometers are identical in their construction.

The lower accelerometer is secured to the underside of the vehicle floor, on the RH inner sill panel, below the front door. The upper accelerometer is secured to a bracket on the body roof panel, in a central position at the top of the windscreen.

Scheme 11

The lower accelerometer is the primary sensor used to measure lateral acceleration of the vehicle for roll control. The upper accelerometer is used by the Dynamic Response control module for roll correction and fault detection in conjunction with the lower accelerometer.

Each accelerometer is a capacitive acceleration sensor and operates on a 5V supply from the dynamic response control module. The upper and lower accelerometers can measure acceleration in the range of ±1.11 g and return an output to the control module of between 0.5 and 4.5V.

Failures of an accelerometer are recorded by the control module and can be retrieved using a Land Rover approved diagnostic system. A special tool is required to remove and replace the accelerometer in the mounting bracket.

Scheme 12

Vehicle Not Moving

When the engine is running and the vehicle is not moving, both DCV's are closed, locking fluid in each side of the actuator piston. The hydraulic pump draws fluid from the reservoir and passes it at very low pressure to the valve block.

Because both DCV's are closed, after the fluid passes through the high pressure filter, it is directed through the PCV to the reservoir.

The PCV is open fully to allow the full flow to pass to the reservoir. The DCV's will remain closed until the control module detects a requirement to operate.

Vehicle Moving and Turning Left

When the vehicle is turning left, the accelerometers detect the cornering forces applied and transmit signals to the control module. The control module determines that an opposing force must be applied to the stabilizer bars to counter the cornering forces. The control module supplies a current to the solenoid of DCV2. Simultaneously, a current is supplied from the control module to the PCV which operates to restrict the flow of fluid returning to the reservoir.

The restriction causes the hydraulic pressure in the system to rise and the pressure is sensed by the pressure transducer which sends a signal to the control module. The control module determines from the inputs it receives what pressure is required and adjusts the pressure accordingly.

The pressure in the system is applied to the piston of each actuator, applying an opposing force to the stabilizer bar and minimizing the cornering effect on the vehicle and maintaining the vehicle attitude. The fluid displaced from the other side of the piston is returned to the reservoir via the valve block.

As the cornering force is removed when the vehicle straightens up, the control module opens the PCV to reduce the pressure in the system. The fluid bleeds from the actuator back into the system as the cornering force is reduced, removing the force applied to the stabilizer bar. When the vehicle is moving in a straight line DCV2 closes.

Vehicle Moving and Turning Right

When the vehicle is turning right, the accelerometers detect the cornering forces applied and transmit signals to the control module. The control module determines that an opposing force must be applied to the stabilizer bars to counter the cornering forces. The control module supplies a current to the solenoid of DCV1. Simultaneously, a current is supplied from the control module to the PCV which operates to restrict the flow of fluid through the by-pass gallery.

The restriction causes the hydraulic pressure in the system to rise and the pressure is sensed by the pressure transducer which sends a signal corresponding to the pressure to the control module. The control module determines from the inputs it receives what pressure is required and adjusts the pressure control valve accordingly.

The pressure in the system is applied to the piston of each actuator, applying an opposing force to the stabilizer bar and minimizing the cornering effect on the vehicle and maintaining the vehicle attitude. The fluid displaced from the other side of the piston is returned to the reservoir via the valve block.

As the cornering force is removed when the vehicle straightens up, the control module opens the PCV to reduce the pressure in the system. The fluid bleeds from the actuator back into the system as the cornering force is reduced, removing the force applied to the stabilizer bar. When the vehicle is moving in a straight line DCV1 closes.

Vehicle Moving in a Straight Line

The control module is constantly monitoring the signals received and operates the DCV's and PCV to maintain the vehicle attitude when the vehicle is moving.

Off-Road Driving

Off-road detection is achieved by the control module by monitoring the signals from the upper and lower accelerometers for varying degrees of body movement. Off-road driving generates differing signals to the accelerometers which in turn produce differing outputs due to their vertical separation and the location of the roll center of the vehicle.

The two signals are passed through a filter to remove any offset caused by the vehicle leaning or the terrain. The control module then uses this signal to calculate the percentage of road roughness.

Below 25 mph (40 km/h) the percentage of road roughness calculated is used by the control module to limit the operation of the Dynamic Response system. At speeds above 25 mph (40 km/h) the system disables the percentage road roughness signal and full Dynamic Response system assistance is restored. The system is completely inoperative at speeds below 2 mph (3 km/h).

Side Slope Detection

The control module uses side slope detection when the upper and lower accelerometers detect an average acceleration of more than ± 0.2 g or 11 degrees of side slope and a road speed of less than 25 mph (40 km/h).

When side slope is detected, both DCV's close to provide a 'locked bars' condition. This condition increases stability and gives a constant vehicle response. As the road speed increases up to 25 mph (40 km/h), the level of average lateral acceleration must also increase and be maintained for the system to recognize that the vehicle is on a side slope. If the side slope angle is steep and the road speed is low, the control module will detect the side slope in a short time.

CONTROL DIAGRAM

Note. A = Hardwired; D = High speed CAN bus

Scheme 13

Ride and handling optimization incorporates the terrain response system which links a number of modules around the vehicle to give the best combination of settings in the different systems.

For information on the description and operation of the system, refer to RIDE AND HANDLING OPTIMIZATION .

INSPECTION AND VERIFICATION

1. Verify the customer concern.
2. Visually inspect for obvious mechanical or electrical faults. Mechanical Electrical Tire condition, pressures, etc Driveline components (correct installation, damage, etc) Engine components (correct installation, damage, etc) Transmission components (correct installation, damage, etc) Suspension components (correct installation, damage, etc) Fuses Harnesses/Connectors Terrain response module Engine control module (ECM) Transmission control module (TCM) Transfer case control module ABS control module Rear differential control module Dynamic suspension control module Controller area network (CAN) circuits
3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
4. Use the approved diagnostic system or a scan tool to retrieve any diagnostic trouble codes (DTCs) before moving onto the «SYMPTOM CHART»(/land-rover/range-rover-sport/i-2005-2009/remont/suspension-control-systems/#ride-and-handling-optimization__symptom-chart) or «DTC INDEX»(/land-rover/range-rover-sport/i-2005-2009/remont/suspension-control-systems/#ride-and-handling-optimization__dtc-index) . Make sure that all DTCs are cleared following rectification.

SYMPTOM CHART

Because the overall function of the system is dependent on sub-systems, it is possible to misinterpret displays in the message center as being terrain response faults when they are actually a result of a fault in one of the sub-systems.

Refer to the table below for help in deciding when to investigate terrain response faults and when the fault is likely to be in a sub-system.

DTC INDEX

Note. If the control module or a component is suspect and the vehicle remains under manufacturer warranty, refer to the Warranty Policy and Procedures manual (section B1.2), or determine if any prior approval programme is in operation, prior to the installation of a new module/component.

Note. Generic scan tools may not read the codes listed, or may read only 5-digit codes. Match the 5 digits from the scan tool to the first 5 digits of the 7-digit code listed to identify the fault (the last 2 digits give extra information read by the manufacturer-approved diagnostic system).

Note. When performing voltage or resistance tests, always use a digital multimeter (DMM) accurate to three decimal places and with a current calibration certificate. When testing resistance, always take the resistance of the DMM leads into account.

Active stabilization is also known as dynamic response, active roll control or active cornering enhancement, and refers to the control of the front and rear stabilizer (or anti-roll) bars.

For information on the description and operation of the system

REFER to: ACTIVE STABILIZATION SYSTEM .

1. Verify the customer concern.
2. Visually inspect for obvious mechanical or electrical faults. Mechanical Electrical Fluid level/condition, pipes, reservoir, etc Pump and pulley Drive belt condition Hoses Valve block Accelerometers (correct fitment, etc) Tire condition, pressures, etc Suspension components (correct fitment, damage, etc) Fuses (battery junction box) Engine control module (ECM) relay Harnesses/Connectors Upper accelerometer Lower accelerometer Steering wheel rotation sensor Dynamic response control module Air suspension control module ABS control module Instrument cluster module Transmission control module (TCM) Controller area network (CAN) circuits
3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
4. Use the approved diagnostic system or a scan tool to retrieve any diagnostic trouble codes (DTCs) before moving onto the symptom chart or DTC index. Because the DTCs are stored in more than one module, a complete vehicle read is recommended Make sure that all DTCs are cleared following rectification

Note. Generic scan tools may not read the codes listed, or may read only 5-digit codes. Match the 5 digits from the scan tool to the first 5 digits of the 7-digit code listed to identify the fault (the last 2 digits give extra information read by the manufacturer-approved diagnostic system).

ACTIVE STABILIZATION SYSTEM BLEEDING

SPECIAL TOOL(S) Dynamic Response Bleed Bottle 204-591-01 Dynamic Response Control Box 204-591-02

Scheme 14

Scheme 15

Note. This procedure should be carried out if the following components have been removed or replaced: front or rear stabilizer bar, front or rear valve block to actuator bar pipe assemblies, or the valve block. It is possible to bleed only the front or rear of the system if only a stabilizer bar or pipe assembly has been removed. If the valve block has been removed, the complete system must be bled.

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1. Check and top-up the dynamic response system fluid reservoir. Top-up the fluid level to the mid-way mark on the reservoir.
2. Install the special tool to the dynamic response reservoir. Completely fill the reservoir with fluid. Make sure the pressure regulator on the special tool is turned OFF. Fill the special tool bottle approximately three-quarters full with fluid. Connect the special tool to a suitable workshop air supply.
3. Raise and support the vehicle.
4. Remove the RH rear wheel and tire.
5. RH side rear: To improve access to RH rear actuator bleed screw, remove bracket from body frame securing fuel breather pipes.
6. Disconnect the two direction control valve electrical connectors.
7. Connect the special tool electrical connectors to the valve block. Connect the special tool power supply leads to the vehicle battery.
8. Remove the engine undershield. For additional information, refer to: «ENGINE UNDERSHIELD»(/land-rover/range-rover-sport/i-2005-2009/remont/exterior-body-panels/#front-end-body-panels) .
9. Connect the hose from special tool kit to the front stabilizer bar bleed screws. Remove the bleed screw covers.
10. Loosen the front actuator RH bleed screw by one-half of a turn.
11. Using the special tool, open both actuator control valves.
12. Bleed the dynamic response system until a flow of clean, air-free fluid, is being pumped into the bleed jar. Using the special tool pressure regulator, carefully increase the air pressure to approx. 5 - 10 PSI/0.3 - 0.7 kPa, until air/fluid is being expelled from bleed screw.
13. When a steady flow of clean air free fluid is running from the bleed point, tighten the bleed screw to 15 Nm (11 lb.ft). Release the switch on the special tool to switch off the actuator control valves.
14. Loosen the front actuator LH bleed screw by one-half of a turn.
15. Using the special tool, open both actuator control valves.
16. Bleed the dynamic response system until a flow of clean, air-free fluid, is being pumped into the bleed jar.
17. When a steady flow of clean air free fluid is running from the bleed point, tighten the bleed screw to 15 Nm (11 lb.ft). Release the switch on the special tool to switch off the actuator control valves.
18. Repeat the front stabilizer bar bleed procedure, from steps 9to 17, further two times, to make sure all air is removed from the actuator.
19. Disconnect the special tool hose from the front stabilizer bar bleed screws. Install the bleed screw covers. Discard the fluid from the bleed jar.
20. Install the engine undershield. For additional information, refer to: «ENGINE UNDERSHIELD»(/land-rover/range-rover-sport/i-2005-2009/remont/exterior-body-panels/#front-end-body-panels) .
21. Check and top-up the special tool fluid reservoir.
22. Connect the hose from the special tool kit to the rear stabilizer bar bleed screws. Remove the bleed screw covers.
23. Loosen the rear actuator RH bleed screw by one-half of a turn.
24. Using the special tool, open both actuator control valves.
25. Bleed the dynamic response system until a flow of clean, air-free fluid, is being pumped into the bleed jar.
26. When a steady flow of clean air free fluid is running from the bleed point, tighten the bleed screw to 15 Nm (11 lb.ft). Release the switch on the special tool to switch off the actuator control valves.
27. Loosen the rear actuator LH bleed screw by one-half of a turn.
28. Using the special tool, open both actuator control valves.
29. Bleed the dynamic response system until a flow of clean, air-free fluid, is being pumped into the bleed jar.
30. When a steady flow of clean air free fluid is running from the bleed point, tighten the bleed screw to 15 Nm (11 lb.ft). Release the switch on the special tool to switch off the actuator control valves.
31. Repeat the rear stabilizer bar bleed procedure, from steps 22o 30a further two times, to make sure all air is removed from the actautor.
32. Disconnect the special tool hose from the rear stabilizer bar bleed screws. Discard the fluid from the bleed jar. Install the bleed screw covers.
33. Disconnect the special tool from the valve block. Connect the valve block electrical connectors.
34. Remove the special tool from the dynamic response system reservoir. Remove the special tool. Top-up the fluid level to the mid-way mark on the reservoir.
35. Install bracket securing fuel breather pipes.
36. Using IDS, check operation of the dynamic response system.
37. If necessary, repeat the above procedure.
38. Install the wheels and tires. Tighten the wheel nuts to 140 Nm (103 lb.ft).

Scheme 31

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Scheme 33

1. Disconnect the battery ground cable. For additional information, refer to: «SPECIFICATIONS»(/land-rover/range-rover-sport/i-2005-2009/remont/charging-system/#battery-and-charging-system-general-information__specifications) .
2. Remove the selector lever knob. For additional information, refer to: «Selector Lever Knob»(/land-rover/range-rover-sport/i-2005-2009/remont/automatic-trans/#automatic-transmissiontransaxle-external-controls-v8-44l-petrol) for V8 4.4L Petrol or «Selector Lever Knob»(/land-rover/range-rover-sport/i-2005-2009/remont/automatic-trans/#automatic-transmissiontransaxle-external-controls-v8-sc-42l-petrol) for V8 S/C 4.2L Perol.
3. Remove the ride and handling optimization switch. Release the 6 clips. Disconnect the 4 electrical connectors.
4. Remove the screw cover. Release the clip.
5. Remove the parking brake switch. Remove the 2 screws.
6. Remove the selector lever panel. Release the 4 clips.

INSTALLATION

1. Install the selector lever panel. Secure the clips.
2. Install the parking brake switch. Tighten the screws.
3. Install the screw cover.
4. Install the ride and handling optimization switch. Connect the electrical connectors. Secure the clips.
5. Install the selector lever knob. For additional information, refer to: «Selector Lever Knob»(/land-rover/range-rover-sport/i-2005-2009/remont/automatic-trans/#automatic-transmissiontransaxle-external-controls-v8-44l-petrol) for V8 4.4L Petrol or «Selector Lever Knob»(/land-rover/range-rover-sport/i-2005-2009/remont/automatic-trans/#automatic-transmissiontransaxle-external-controls-v8-sc-42l-petrol) for V8 S/C 4.2L Perol.
6. Connect the battery ground cable. For additional information, refer to: «SPECIFICATIONS»(/land-rover/range-rover-sport/i-2005-2009/remont/charging-system/#battery-and-charging-system-general-information__specifications) .

UPPER ACCELEROMETER

SPECIAL TOOL(S) Accelerometer remover/replacer 204-505 (LRT-60-014A)

Scheme 34

Scheme 35

1. Disconnect the battery ground cable. For additional information, refer to: «SPECIFICATIONS»(/land-rover/range-rover-sport/i-2005-2009/remont/charging-system/#battery-and-charging-system-general-information__specifications) .
2. Remove the front overhead console. Carefully release the 9 clips. Disconnect the 2 electrical connectors.
3. Remove the upper accelerometer. Using the special tool, release the accelerometer. Release and disconnect the electrical connector.

1. Using the special tool, install the upper accelerometer. Connect and secure the electrical connector.
2. Install the front overhead console. Connect and secure the electrical connectors. Carefully secure the clips.
3. Connect the battery ground cable. For additional information, refer to: «SPECIFICATIONS»(/land-rover/range-rover-sport/i-2005-2009/remont/charging-system/#battery-and-charging-system-general-information__specifications) .
4. Using T4, calibrate the dynamic response system.

LOWER ACCELEROMETER

SPECIAL TOOL(S) Accelerometer remover/replacer 204-505 (LRT-60-014A)

Scheme 36

1. Disconnect the battery ground cable. For additional information, refer to: «SPECIFICATIONS»(/land-rover/range-rover-sport/i-2005-2009/remont/charging-system/#battery-and-charging-system-general-information__specifications) .
2. Raise and support the vehicle.
3. Remove the lower accelerometer. Using the special tool, release the accelerometer. Release and disconnect the electrical connector.

1. Using the special tool, install the lower accelerometer. Connect and secure the electrical connector.
2. Connect the battery ground cable. For additional information, refer to: «SPECIFICATIONS»(/land-rover/range-rover-sport/i-2005-2009/remont/charging-system/#battery-and-charging-system-general-information__specifications) .
3. Using T4, calibrate the dynamic response system.

REMOVAL

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1. Disconnect the battery ground cable. For additional information, refer to: «SPECIFICATIONS»(/land-rover/range-rover-sport/i-2005-2009/remont/charging-system/#battery-and-charging-system-general-information__specifications) .
2. Raise and support the vehicle.
3. Remove the air cleaner assembly. For additional information, refer to: «Air Cleaner»(/land-rover/range-rover-sport/i-2005-2009/remont/mechanical/#intake-air-distribution-and-filtering-v8-sc-42l-petrol) .
4. Remove the viscous fan assembly. For additional information, refer to: «Cooling Fan»(/land-rover/range-rover-sport/i-2005-2009/remont/cooling-system-mechanical/#engine-cooling-v8-sc-42l-petrol__cooling-fan) for V8 S/C 4.2L Petrol or «Cooling Fan»(/land-rover/range-rover-sport/i-2005-2009/remont/cooling-system-mechanical/#engine-cooling-v8-44l-petrol__cooling-fan) for V8 4.4L Petrol .
5. Remove the front RH fender splash shield. For additional information, refer to: «FENDER SPLASH SHIELD»(/land-rover/range-rover-sport/i-2005-2009/remont/exterior-body-panels/#front-end-body-panels) .
6. Loosen the fluid pump drive pulley retaining bolts. Loosen the 3 Torx bolts.
7. Release the tension from the belt. Remove the accessory drive belt.
8. Remove the fluid pump drive pulley. Remove the 3 bolts.
9. Disconnect the fluid pump hoses. Clamp the fluid pump to reservoir hose. Release the hose clip. Disconnect the hoses. Discard the O-ring seals.
10. Remove the fluid pump. Remove the 3 bolts.

1. Install the fluid pump. Clean the locating dowels. Install and tighten the bolts to 22 Nm (16 lb.ft). Prime the pump with clean fluid.
2. Connect the hoses. Clean the component mating faces. Lubricate and install new O-rings to the high-pressure union. Tighten the union to 35 Nm (26 lb.ft). Install the hose clip. Remove the hose clamp.
3. Install the fluid pump drive pulley. Install the Torx bolts, but do not tighten fully at this stage.
4. Install the belt.
5. Tighten the fluid pump drive pulley retaining bolts to 22 Nm (16 lb.ft).
6. Install the viscous fan assembly. For additional information, refer to: «Cooling Fan»(/land-rover/range-rover-sport/i-2005-2009/remont/cooling-system-mechanical/#engine-cooling-v8-sc-42l-petrol__cooling-fan) for V8 S/C 4.2L Petrol or «Cooling Fan»(/land-rover/range-rover-sport/i-2005-2009/remont/cooling-system-mechanical/#engine-cooling-v8-44l-petrol__cooling-fan) for V8 4.4L Petrol .
7. Install the fender splash shield. For additional information, refer to: «FENDER SPLASH SHIELD»(/land-rover/range-rover-sport/i-2005-2009/remont/exterior-body-panels/#front-end-body-panels) .
8. Install the air cleaner assembly. For additional information, refer to: «Air Cleaner»(/land-rover/range-rover-sport/i-2005-2009/remont/mechanical/#intake-air-distribution-and-filtering-v8-sc-42l-petrol) .
9. Refill the fluid reservoir.
10. Connect the battery ground lead, tighten the nut to 5 Nm (4 lb.ft). For additional information, refer to: «SPECIFICATIONS»(/land-rover/range-rover-sport/i-2005-2009/remont/charging-system/#battery-and-charging-system-general-information__specifications) .
11. Make sure there is fluid circulation through the reservoir. Start the engine and allow to idle.

Note. The dynamic response module is always located on the driver's side of the vehicle.

Scheme 41

Scheme 42

1. Remove the cowl side trim panel. For additional information, refer to: «COWL SIDE TRIM PANEL»(/land-rover/range-rover-sport/i-2005-2009/remont/exteriorinterior-trim/#interior-trim-and-omamentation) .
2. Remove the closing trim panel. Release the clip. Remove the 2 screws. Disconnect the electrical connector.
3. Remove the dynamic response module. Remove the 2 bolts. Disconnect the 2 electrical connectors.

1. Install the dynamic response module. Connect the electrical connectors. Tighten the 2 bolts to 4 Nm (3 lb.ft).
2. Install the closing trim panel. Connect the electrical connector. Secure the clip. Tighten the screws.
3. Install the cowl side trim panel. For additional information, refer to: «COWL SIDE TRIM PANEL»(/land-rover/range-rover-sport/i-2005-2009/remont/exteriorinterior-trim/#interior-trim-and-omamentation) .
4. Initiate a new control module using T4.

Note. The valve block seals do not require replacement unless there is evidence of a fluid leak. A new valve block is supplied with new seals installed.

Scheme 43

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1. Raise and support the vehicle.
2. Release the front actuator pipes from the valve block. Position a container to collect the fluid spillage. Remove and discard the 2 nuts.
3. Release the valve block to rear stabilizer bar actuator pipe assembly mounting. Remove the nut.
4. Release the valve block to rear stabilizer bar actuator pipe assembly mounting. Remove the bolt. Remove the nut. Remove the bracket.
5. Disconnect the rear actuator pipes from the valve block. Position a container to collect the fluid spillage. Remove and discard the nut.
6. Remove the valve block. Disconnect the 4 electrical connectors. Remove the 3 bolts. Collect the 4 washers. Disconnect the front actuator pipes from the valve block.

Scheme 48

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1. Check the valve block O-rings seals and plastic spacer washers are correctly installed. A: Backing rings (white) B: Outer clamping ring C: O-ring seals D: Outer backing ring (Black)
2. Install the valve block. Remove the blanking caps from the ports. Connect the front actuator pipes to the valve block. Install 3 new nuts and tighten to 23 Nm (17 lb.ft). Discard the 3 valve block retaining bolts, fit new ones and tighten to 20 Nm (15 lb.ft). Connect the electrical connectors.
3. Connect the rear actuator pipes to the valve block. Remove the blanking caps from the ports. Install a new nut and tighten to 22 Nm (16 lb.ft). Remove the container.
4. Secure the valve block to rear stabilizer bar actuator pipe assembly mounting. Install the bracket. Install the nut and bolt and tighten to 9 Nm (7 lb.ft).
5. Secure the valve block to rear stabilizer bar actuator pipe assembly mountings. Tighten the nut to 9 Nm (7 lb.ft)
6. Using T4, bleed the Dynamic Response system.

Note. This procedure does not require the Dynamic Response system to be bled.

Scheme 51

1. Raise and support the vehicle.
2. Remove and discard the valve block filter. Position container to collect fluid loss. Remove the access plug. Remove and discard the access plug O-ring seal. Using a suitable M6 bolt, release the filter from the valve block.

1. Install the new valve block filter. Clean the component mating faces. Install a new access plug O-ring seal. Tighten the access plug to 62 Nm (46 lb.ft). Remove the container.
2. Start the engine and allow to idle.
3. Check and top-up the Dynamic Response system fluid reservoir.

VALVE BLOCK TO FRONT STABILIZER BAR ACTUATOR PIPE ASSEMBLY V8 S/C 4.2L PETROL

SPECIAL TOOL(S) Ball joint separator 205-754 (LRT-54-027)

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1. Raise and support the vehicle.
2. Remove the rear bumper cover. For additional information, refer to: «REAR BUMPER COVER»(/land-rover/range-rover-sport/i-2005-2009/remont/exterior-body-panels/#bumpers) .
3. Remove the spare wheel and tire.
4. Remove the engine undershield. For additional information, refer to: «ENGINE UNDERSHIELD»(/land-rover/range-rover-sport/i-2005-2009/remont/exterior-body-panels/#front-end-body-panels) .
5. Disconnect the fluid lines from the actuator. Position container to collect fluid loss. Remove the 2 bolts. Remove and discard the O-ring seals. Remove and discard the plastic spacer washers. Install blanking caps to the exposed ports.
6. Remove the front wheels and tires.
7. RH front: Remove the shock absorber and air spring assembly. For additional information, refer to: «FRONT SHOCK ABSORBER AND AIR SPRING ASSEMBLY»(/land-rover/range-rover-sport/i-2005-2009/remont/electronic-suspension/#vehicle-dynamic-suspension) .
8. Release the brake hose bracket from the wheel knuckle. Remove the retaining bolt.
9. Release the brake caliper from the wheel knuckle. Remove the 2 retaining bolts. Tie the brake caliper aside.
10. Release the wheel speed sensor from the wheel knuckle. Remove the bolt.
11. Remove the stabilizer bar link nut. Discard the nut.
12. Loosen the upper arm retaining nut.
13. Using the special tool, release the upper arm ball joint. Remove and discard the retaining nut.
14. Remove the integrated body frame bracket. Remove the 3 bolts and 1 nut.
15. Remove the body mount retaining bolts. Remove the 8 bolts.
16. Raise the body. Using suitable stands, raise the body to release the body mounts.
17. Remove the body mount.
18. Disconnect the high pressure line. Position a container to collect the fluid spillage. Install blanking caps to the exposed ports.
19. Remove the air cleaner assembly. For additional information, refer to: «Air Cleaner»(/land-rover/range-rover-sport/i-2005-2009/remont/mechanical/#intake-air-distribution-and-filtering-v8-sc-42l-petrol) .
20. Disconnect the fluid return line from the reservoir. Position a container to collect the fluid spillage. Reposition the fluid line into the wheel arch area.
21. Release the valve block to front stabilizer bar actuator pipe assembly mountings. Remove the 2 nuts and 1 bolt.
22. Disconnect the front actuator pipes from the valve block. Position a container to collect the fluid spillage. Remove and discard the 2 nuts. Install blanking caps to the exposed ports.
23. Remove the valve block to front stabilizer bar actuator pipe assembly.

Scheme 62

1. Check the valve block O-rings and plastic spacer washers are correctly installed. A: Backing rings (white) B: Outer clamping ring C: O-ring seals D: Outer backing ring (Black)
2. Install the valve block to front stabilizer bar actuator pipe assembly. Clean the components.
3. Connect the front actuator pipes to the valve block. Remove the blanking caps from the ports. Install 2 new nuts and tighten to 22 Nm (16 lb.ft). Remove the container.
4. Attach the valve block to front stabilizer bar actuator pipe assembly mountings. Tighten the 2 nuts and 1 bolt to 9 Nm (7 lb.ft).
5. Connect the fluid line to the reservoir. Reposition the fluid line from the wheel arch area. Install the clip. Remove the container.
6. Install the air cleaner assembly. For additional information, refer to: «Air Cleaner»(/land-rover/range-rover-sport/i-2005-2009/remont/mechanical/#intake-air-distribution-and-filtering-v8-sc-42l-petrol) .
7. Connect the high pressure line. Remove the blanking caps from the ports. Tighten the union to 21 Nm (15 lb.ft). Remove the container.
8. Install the body mount.
9. Lower the body. Remove the stands.
10. Install the body mount retaining bolts. Tighten the 8 retaining bolts to 133 Nm (98 lb.ft).
11. Install the integrated body frame bracket. Install the 3 bolts and tighten to 40 Nm (30 lb.ft). Tighten the nut to 9 Nm (7 lb.ft)
12. Connect the upper arm and wheel knuckle. Install a new nut and tighten to 70 Nm (52 lb.ft).
13. Install the wheel speed sensor. Tighten the bolt to 9 Nm (7 lb.ft). Connect the electrical connector. Secure the wiring harness in the clips.
14. Secure the brake caliper to the wheel knuckle. Tighten the bolts to 275 Nm (203 lb.ft).
15. Secure the brake hose retaining bracket to the wheel knuckle. Tighten the bolt to 23 Nm (17 lb.ft).
16. Install the shock absorber and air spring assembly. For additional information, refer to: «FRONT SHOCK ABSORBER AND AIR SPRING ASSEMBLY»(/land-rover/range-rover-sport/i-2005-2009/remont/electronic-suspension/#vehicle-dynamic-suspension) .
17. Connect the fluid lines to the actuator. Clean the component mating faces. Remove the blanking caps from the ports. Install new plastic spacer washers and O-ring seals. Tighten the 2 bolts to 22 Nm (16 lb.ft).
18. Bleed the front of the Dynamic Response system using T4.
19. Install the engine undershield. For additional information, refer to: «ENGINE UNDERSHIELD»(/land-rover/range-rover-sport/i-2005-2009/remont/exterior-body-panels/#front-end-body-panels) .
20. Secure the stabilizer bar link. Install a new nut and tighten to 175 Nm (129 lb.ft).
21. Install the front wheels and tires. Tighten the wheel nuts to 140 Nm (103 lb.ft).
22. Install the spare wheel and tire.
23. Install the rear bumper cover. For additional information, refer to: «REAR BUMPER COVER»(/land-rover/range-rover-sport/i-2005-2009/remont/exterior-body-panels/#bumpers) .

Note. The valve block seals do not require replacement unless there is evidence of a fluid leak.

Scheme 63

Scheme 64

Scheme 65

1. Raise and support the vehicle.
2. Remove the rear bumper cover. For additional information, refer to: «REAR BUMPER COVER»(/land-rover/range-rover-sport/i-2005-2009/remont/exterior-body-panels/#bumpers) .
3. Remove the spare wheel and tire.
4. Remove the rear wheels and tires.
5. Remove the body mount retaining bolts. Remove the 8 bolts.
6. Using suitable stands, raise the body.
7. Release the valve block to rear stabilizer bar actuator pipe assembly mounting. Remove the nut.
8. Release the valve block to rear stabilizer bar actuator pipe assembly mounting. Remove the nut. Remove the bolt. Remove the bracket.
9. Disconnect the fluid lines from the actuator. Position container to collect fluid loss. Remove the 2 bolts. Remove and discard the O-ring seals. Remove and discard the plastic spacer washers. Install blanking caps to the exposed ports.
10. Disconnect the rear actuator pipes from the valve block. Position a container to collect the fluid spillage. Remove and discard the nut.
11. Remove the valve block to rear stabilizer bar actuator pipe assembly.

Scheme 66

Scheme 67

1. Check the valve block O-rings and plastic spacer washers are correctly installed. A: Backing rings (white) B: Outer clamping ring C: O-ring seals D: Outer backing ring (Black)
2. Install the valve block to rear stabilizer bar actuator pipe assembly.
3. Connect the rear actuator pipes to the valve block. Remove the blanking caps from the ports. Install a new nut and tighten to 22 Nm (16 lb.ft). Remove the container.
4. Connect the fluid lines to the actuator. Clean the component mating faces. Remove the blanking caps from the ports. Install new plastic spacer washers and O-ring seals. Tighten the 2 bolts to 22 Nm (16 lb.ft).
5. Secure the valve block to rear stabilizer bar actuator pipe assembly mounting. Install the bracket. Install the nut and bolt and tighten to 9 Nm (7 lb.ft).
6. Secure the valve block to rear stabilizer bar actuator pipe assembly mounting. Tighten the nut to 9 Nm (7 lb.ft)
7. Bleed the rear of the Dynamic Response system using T4. For additional information, refer to: «ACTIVE STABILIZATION SYSTEM BLEEDING»(/land-rover/range-rover-sport/i-2005-2009/remont/suspension-control-systems/#ride-and-handling-optimization__active-stabilization-system-bleeding) .
8. Lower the body. Remove the stands.
9. Install the body mount retaining bolts. Tighten the 8 retaining bolts to 133 Nm (98 lb.ft).
10. Install the wheels and tires. Tighten the wheel nuts to 140 Nm (103 lb.ft).
11. Install the spare wheel and tire.
12. Install the rear bumper cover. For additional information, refer to: «REAR BUMPER COVER»(/land-rover/range-rover-sport/i-2005-2009/remont/exterior-body-panels/#bumpers) .

Note. This procedure does not require the Dynamic Response system to be bled.

Scheme 68

1. Raise and support the vehicle.
2. Remove the valve block transducer. Disconnect the electrical connector. Position container to collect fluid loss.

1. Install the valve block transducer. Clean the component mating faces. Tighten to 25 Nm (18 lb.ft). Remove the container.
2. Start the engine and allow to idle.
3. Check and top-up the Dynamic Response system fluid reservoir.

FRONT STABILIZER BAR BUSHING TDV6 2.7L DIESEL/V8 S/C 4.2L PETROL

SPECIAL TOOL(S) Front Stabilizer Bar Bushing Tightening Tool 204-703 Front Stabilizer Bar Bushing Tightening Tool 204-705

Scheme 69

Scheme 70

Scheme 71

Scheme 72

Scheme 73

1. Raise and support the vehicle.
2. Remove the engine undershield. For additional information, refer to: «ENGINE UNDERSHIELD»(/land-rover/range-rover-sport/i-2005-2009/remont/exterior-body-panels/#front-end-body-panels) .
3. Using a suitable jack, support the differential. Remove and discard the three differential mounting bolts. Raise and reposition the front differential case.
4. Disconnect both the stabilizer bar links from the stabilizer bar. Remove and discard the 2 nuts.
5. Position the special tools.
6. Remove the stabilizer bar bushings. Using the special tools, remove and discard the 6 bolts. Remove the stabilizer bar clamps.
7. Inspect the condition of the front stabilizer bar. Remove any dirt or debris from the section of the stabilizer bar that is clamped in the bush. Paint, if present, does not need to be removed. If required, use a suitable strip of 320 grade abrasive paper/cloth to remove any built-up deposits. Use a suitable brake cleaner to remove any dirt or grease residue.

Scheme 74

1. Install the stabilizer bar bushings. To make sure that the bush is clamped correctly the fixings must be tightened to 115 Nm in the following order: Stage 1: Tighten the middle fixing. Stage 2: Tighten the front fixing. Stage 3: Tighten the rear fixing.
2. Connect both stabilizer bar links to the stabilizer bar. Install new nuts and tighten to 175 Nm.
3. Align and secure the front differential case. Tighten the new axle carrier bracket bolts to 80 Nm, then a further 60 degrees.
4. Install the engine undershield. For additional information, refer to: «ENGINE UNDERSHIELD»(/land-rover/range-rover-sport/i-2005-2009/remont/exterior-body-panels/#front-end-body-panels) .

FRONT STABILIZER BAR TDV6 2.7L DIESEL/V8 S/C 4.2L PETROL

SPECIAL TOOL(S) Front Stabilizer Bar Bushing Tightening Tool 204-703 Front Stabilizer Bar Bushing Tightening Tool 204-705

Scheme 75

Scheme 76

Scheme 77

Scheme 78

Scheme 79

Scheme 80

Scheme 81

Scheme 82

Scheme 83

1. Raise and support the vehicle.
2. Remove the front wheels and tires.
3. Remove the engine undershield. For additional information, refer to: «ENGINE UNDERSHIELD»(/land-rover/range-rover-sport/i-2005-2009/remont/exterior-body-panels/#front-end-body-panels) .
4. Release the driveshaft from the front axle drive flange. Remove the 6 Torx bolts and washers. Discard the bolts.
5. Support the driveshaft. Compress the joints to disengage the drive flanges. Using suitable securing strap, reposition and support the driveshaft.
6. Disconnect the fluid lines from the actuator. Position container to collect fluid loss. Remove the 2 bolts. Remove and discard the O-ring seals. Remove and discard the plastic spacer washers.
7. Release both of the stabilizer bar links from the stabilizer bar. Remove and discard the 2 nuts.
8. Position the special tools.
9. Remove the stabilizer bar bushings. Using the special tools, remove and discard the 6 bolts. Remove the stabilizer bar clamps.
10. Remove the front axle crossmember. Remove the 4 bolts.
11. Remove the stabilizer bar and actuator assembly.

1. Install the stabilizer bar and actuator assembly.
2. Install the front axle crossmember. Tighten the 4 bolts to 115 Nm (85 lb.ft).
3. Install the stabilizer bar clamps. Clean the components. Install the stabilizer bar clamps. Using the special tools, tighten the bolts to 115 Nm (85 lb.ft).
4. Secure both stabilizer bar links to the stabilizer bar. Install a new nut and tighten to 175 Nm (129 lb.ft).
5. Connect the fluid lines to the actuator. Clean the component mating faces. Install new plastic spacer washers and O-ring seals. Tighten the 2 bolts to 22 Nm (16 lb.ft).
6. Using the approved Land Rover diagnostic system, bleed the active stabilization system.
7. Secure the driveshaft to the front axle drive flange. Remove and discard the tie strap. Clean the components. Compress the joints to engage the drive flanges. Install new retaining bolts. Stage 1: Tighten the bolts to 45 Nm (33 lb.ft). Stage 2: Tighten the bolts a further 90 degrees.
8. Install the engine undershield. For additional information, refer to: «ENGINE UNDERSHIELD»(/land-rover/range-rover-sport/i-2005-2009/remont/exterior-body-panels/#front-end-body-panels) .
9. Install the front wheels and tires. Tighten the wheel nuts to 140 Nm (103 lb.ft).

Scheme 84

Scheme 85

Scheme 86

Scheme 87

1. Raise and support the vehicle.
2. Remove the rear bumper cover. For additional information, refer to: «REAR BUMPER COVER»(/land-rover/range-rover-sport/i-2005-2009/remont/exterior-body-panels/#bumpers) .
3. Remove the spare wheel and tire.
4. Raise the vehicle.
5. Remove the rear wheels and tires.
6. Remove the body mount retaining bolts. Remove the 8 bolts.
7. Raise the body. Using suitable stands, raise the body to release the body mounts.
8. Remove the 2 rear body mounts.
9. Remove the stabilizer bar bushings. Remove and discard the 4 bolts. Remove the 2 clamps.
10. Inspect the condition of the rear stabilizer bar. Remove any dirt or debris from the section of the stabilizer bar that is clamped in the bush. Paint, if present, does not need to be removed. If required, use a suitable strip of 320 grade abrasive paper/cloth to remove any built-up deposits. Use a suitable brake cleaner to remove any dirt or grease residue.

1. Install the stabilizer bar bushings.
2. Install the stabilizer bar clamps. Tighten the 4 retaining bolts to 62 Nm (46 lb.ft).
3. Install the body mounts.
4. Lower the body. Remove the stands.
5. Install the body mount retaining bolts. Tighten the 8 retaining bolts to 133 Nm (98 lb.ft).
6. Install the wheels and tires.
7. Lower the vehicle.
8. Install the spare wheel and tire.
9. Install the rear bumper cover. For additional information, refer to: «REAR BUMPER COVER»(/land-rover/range-rover-sport/i-2005-2009/remont/exterior-body-panels/#bumpers) .

Scheme 88

Scheme 89

Scheme 90

Scheme 91

Scheme 92

1. Raise and support the vehicle.
2. Remove the rear bumper cover. For additional information, refer to: «REAR BUMPER COVER»(/land-rover/range-rover-sport/i-2005-2009/remont/exterior-body-panels/#bumpers) .
3. Remove the spare wheel and tire.
4. Raise the vehicle.
5. Remove the rear wheels and tires.
6. Disconnect the fluid lines from the actuator. Position container to collect fluid loss. Remove the 2 bolts. Remove and discard the plastic spacer washers. Remove and discard the O-ring seals. Install blanking caps to the exposed ports.
7. Release both stabilizer bar links. Remove the 2 nuts.
8. Remove the body mount retaining bolts. Remove the 8 bolts.
9. Raise the body. Using suitable stands, raise the body to release the body mounts.
10. Remove the 2 rear body mounts.
11. Remove the stabilizer bar and actuator assembly bushings. Remove and discard the 4 bolts. Remove the 2 clamps.
12. With assistance, remove the stabilizer bar and actuator assembly.

1. With assistance, install the stabilizer bar and actuator assembly.
2. Install the stabilizer bar and actuator assembly bushings.
3. Install the stabilizer bar clamps. Tighten the 4 retaining bolts to 62 Nm (46 lb.ft).
4. Connect the RH stabilizer bar link. Install a new nut and tighten to 115 Nm (85 lb.ft).
5. Connect the fluid lines to the actuator. Clean the component mating faces. Remove the blanking caps from the ports. Install new plastic spacer washers and O-ring seals. Tighten the 2 bolts to 22 Nm (16 lb.ft).
6. Bleed the rear of the Dynamic Response system using T4.
7. Connect the LH stabilizer bar link. Install a new nut and tighten to 115 Nm (85 lb.ft).
8. Install the body mounts.
9. Lower the body. Remove the stands.
10. Install the body mount retaining bolts. Tighten the 8 retaining bolts to 133 Nm (98 lb.ft).
11. Install the wheels and tires. Tighten the wheel nuts to 140 Nm (103 lb.ft).
12. Lower the vehicle.
13. Install the spare wheel and tire.
14. Install the rear bumper cover. For additional information, refer to: «REAR BUMPER COVER»(/land-rover/range-rover-sport/i-2005-2009/remont/exterior-body-panels/#bumpers) .

Note. This procedure does not require the Dynamic Response system to be bled.

Scheme 93

Scheme 94

Scheme 95

Scheme 96

1. Raise and support the vehicle.
2. Release the valve block to rear stabilizer bar actuator pipe assembly mounting. Remove the nut. Remove the bracket.
3. Remove the solenoid. Remove the electrical connector. Remove the solenoid nut. Remove and discard the O-ring seal.
4. Remove the PCV valve. Clamp the fluid pump supply and return hoses to minimize fluid loss. Position container to collect fluid loss. Remove the PCV valve.
5. Remove and discard the valve block filter. Remove the access plug. Remove and discard the access plug O-ring seal. Using a suitable M6 bolt, release the filter from the valve block.

Scheme 97

Scheme 98

1. Install the PCV valve. Clean the component mating faces. Install the PCV valve. Torque: 35 Nm (26 lb.ft).
2. Install the solenoid. Install the O-ring seal. Tighten to 12 Nm. Install the electrical connector.
3. Install the new valve block filter. Clean the component mating faces. Install a new access plug O-ring seal. Tighten the access plug to 62 Nm (46 lb.ft). Remove the container. Remove the hose clamps.
4. Secure the valve block to rear stabilizer bar actuator pipe assembly mountings. Tighten the nut to 9 Nm (7 lb.ft)
5. Check and top-up the dynamic response system fluid reservoir.
6. Start the engine and allow to idle.
7. Check and top-up the dynamic response system fluid reservoir. Make sure there is fluid circulation through the reservoir.

Scheme 99

1. Raise and support the vehicle.
2. Remove the valve block. For additional information, refer to: «VALVE BLOCK»(/land-rover/range-rover-sport/i-2005-2009/remont/suspension-control-systems/#ride-and-handling-optimization) .
3. Remove the solenoid. Remove the solenoid nut. Remove and discard the O-ring seal.

Scheme 100

1. Install the solenoid. Install the O-ring seal. Tighten to 12 Nm.
2. Install the valve block. For additional information, refer to: «VALVE BLOCK»(/land-rover/range-rover-sport/i-2005-2009/remont/suspension-control-systems/#ride-and-handling-optimization) .
3. Bleed the dynamic response system. For additional information, refer to: «ACTIVE STABILIZATION SYSTEM BLEEDING»(/land-rover/range-rover-sport/i-2005-2009/remont/suspension-control-systems/#ride-and-handling-optimization__active-stabilization-system-bleeding) .

See also:
• ANTI-LOCK CONTROL - TRACTION CONTROL
• INFORMATION AND MESSAGE CENTER
• Steering Angle Sensor
• CHARGING SYSTEM
• COMMUNICATIONS NETWORK
• FOUR-WHEEL ALIGNMENT
• ENGINE UNDERSHIELD
• SPECIFICATIONS
• Selector Lever Knob
• Selector Lever Knob
• Air Cleaner
• Cooling Fan
• Cooling Fan
• COWL SIDE TRIM PANEL
• REAR BUMPER COVER
• FRONT SHOCK ABSORBER AND AIR SPRING ASSEMBLY
• RIDE AND HANDLING OPTIMIZATION
• SYMPTOM CHART
• DTC INDEX
• ACTIVE STABILIZATION SYSTEM BLEEDING
• FRONT STABILIZER BAR - TDV6 2.7L DIESEL/V8 S/C 4.2L PETROL
• LOWER ACCELEROMETER
• UPPER ACCELEROMETER