Driving Aids - Description & Operation Land Rover Range Rover L322

Scheme 18

Scheme 19

General

The Park Distance Control (PDC) provides an audible warning to the driver when any obstacles are in the path of the vehicle during forward and reverse parking maneuvers. The system consists of four ultrasonic sensors in each bumper, an ECU, a sounder and a parking switch. The system also uses the sounder driven by the instrument pack.

At low speed, the PDC ECU uses the ultrasonic sensors to monitor the area around the bumpers, then outputs a warning on the PDC sounder or the instrument pack sounder if an object is detected within a monitored area. As well as detecting solid objects such as posts, walls and other vehicles, the system can also detect less solid objects such as a wire mesh fence. Objects close to the ground may escape detection but, because of their low height, will not foul the vehicle.

Ultrasonic Sensors

The ultrasonic sensors are transceivers which are installed in inserts in the bumpers. All eight sensors are identical and keyed to the inserts to ensure correct orientation.

When the system is active, the sensors transmit ultrasonic pulses. Any reflections from the pulses received by the transmitting and adjacent sensors are then converted to digital format and output to the PDC ECU.

PDC ECU

The PDC ECU is located next to the rear fusebox behind the trim in the RH side of the luggage compartment.

Inputs and Outputs

Three connectors provide the interface between the PDC ECU and the vehicle wiring. The PDC ECU is powered by an ignition supply from the passenger compartment fusebox. In addition to hardwired connections with the ultrasonic sensors, PDC sounder and power supply, the PDC ECU communicates with the instrument pack on the I bus. I bus communication is used for T4 diagnostics and for system operation. System operation related I bus messages include

I Bus Messages

I Bus Messages

Scheme 20

PDC ECU Harness Connector C0957 Pin Details

Scheme 21

PDC ECU Harness Connector C1457 Pin Details

PDC ECU Harness Connector C1457 Pin Details

PDC Sounder

The PDC sounder produces the audible warnings with which the PDC ECU informs the driver of system status and objects detected at the rear of the vehicle. The PDC sounder is installed behind the trim in the RH side of the luggage compartment, on the underside of the shelf.

The chime produced on the PDC sounder has a lower tone than that produced on the instrument pack sounder (which is used to warn of objects detected at the front of the vehicle), to enable the driver to differentiate between the two.

Parking Switch

The parking switch is a non latching push switch installed on the center console for selecting the system on and off. When pressed, the switch connects a ground to the PDC ECU. An orange LED above the switch indicates when the PDC system is active. The LED is activated by a power feed from the PDC ECU.

When the ignition switch is in position II and either reverse gear is selected or the parking switch is pressed, both sets of acoustic sensors are activated. The PDC ECU only activates the system if reverse is selected for more than 1 second, to avoid nuisance audible warnings when the gear selector lever is being moved between Drive and Park. The rear sensors are disabled when a trailer is connected to the vehicle.

Scheme 22

A = Intermittent warning tone; B = Continuous warning tone

When it activates the system, the PDC ECU illuminates the indicator LED in the parking switch, switches on the ultrasonic sensors and generates a single chime on the PDC sounder and the instrument pack sounder to indicate the system is active. The PDC ECU then processes the distance readings from the ultrasonic sensors to determine if there are any objects within the detection areas.

If there are no objects in the detection areas, there are no further audible warnings. If an object is detected, repeated audible warnings are produced on the PDC sounder or the instrument pack sounder as appropriate. The time delay between the audible warning tones decreases as the distance between the detected object and the vehicle decreases until, at approximately 250 mm (10 in), the audible warning tone is continuous.

After the initial detection of an object, if there is no decrease in the distance between the object and the vehicle

1. If the object is detected by one of the central acoustic sensors the time delay between audible warning tones remains constant
2. If the object is detected by a corner transducer the audible warning tones stop after approximately 3 seconds.

The audible warning tones are discontinued when the gearbox selector lever is moved out of reverse, but will restart if the PDC ECU detects a decrease in the distance between the vehicle and an object.

System operation is cancelled when the parking switch is pressed or the ignition is switched off. System operation is also cancelled if the vehicle travels more than 50 m (164 ft) or forward speed exceeds 19 mph (30 km/h).

The PDC ECU software incorporates routines that compensate for the effect of ice, frost and rain on the acoustic sensors. Ice compensation occurs if the ambient temperature is less than 6°C (43°F).

Diagnostics

The PDC ECU performs self check routines and checks the system wiring for short and open circuits. While the system is active the PDC ECU also monitors the data from the acoustic sensors.

If a fault is detected, a related fault code is stored in the non volatile memory of the PDC ECU and either the front sensors, the rear sensors or the complete system is disabled, as appropriate. To advise the driver of the failure, the PDC ECU flashes the indicator LED at 2 Hz and sounds a continuous warning tone for 3 seconds, in place of the normal short tone, when the system is activated.

Fault codes can be accessed using T4, which communicates with the PDC ECU via the instrument pack and the I bus.

Scheme 23

Scheme 24

The Tyre Pressure Monitoring (TPM) system continuously monitors tire pressures so long as vehicle battery power is available. If a low tire pressure is detected, the system alerts the driver via the message center when the ignition is on. The system monitors the tire pressure of each road wheel and the full size spare wheel. The tire pressure of a space saver spare wheel is not monitored.

The TPM system consists of the following components

1. A reset switch
2. A tire sensor in each monitored wheel
3. An antenna in each wheelarch
4. An ECU.

The tire sensors measure the air pressure and temperature in the tires and transmit the readings in radio signals at a frequency of 433 MHz. The radio signals are received by the antennas and transferred to the TPM ECU, which compares the information from the tire sensors with nominal pressures stored in memory, and alerts the driver if a tire pressure decreases from the nominal pressure by more than the permitted limit.

The reset switch is used to initialize the TPM ECU. During initialization the TPM ECU adopts the current tire pressures as the nominal pressures.

TPM Reset Switch

The TPM reset switch is a non latching push switch installed on the center console below the A/C control panel. While pressed, the reset switch connects a ground to the TPM ECU.

Tyre Sensor

A tire sensor is installed on the wheel rim of each monitored wheel, and connected to the tire inflation valve. The tire inflation valve and a Torx bolt secure the tire sensor to the wheel.

The tire sensor incorporates a pressure sensor, temperature sensor, signal processor, radio transmitter and a non serviceable 3.6 V battery. Nominal service life of the battery is seven years. Battery status can be checked using T4.

The electronics of replacement tire sensors are inactive until they have been subjected to a pressure of 1.5 bar (21.75 lbf/in 2 ), i.e. installed on the wheel and the tire inflated. To conserve power in service, the signal processor adopts different operating modes depending on the prevailing conditions

1. Normal operating mode, for stable or slow changes of pressure, when the sensing rate is every 3.4 seconds and transmission rate approximately once every 55 seconds
2. Emergency operating mode, adopted if the pressure decreases more than 0.2 bar (3 lbf/in 2 ) in 30 seconds, when both the sensing and transmission rates are once every 0.85 second. Reverts to normal operating mode after 218 seconds
3. Deactivated mode, for temperatures in excess of 120 °C (248 °F) (making sensor readings and transmission unreliable), when sensing and transmission electronics are deactivated and the TYRE CONTROL INACTIVE warning is displayed. The electronics are re-activated when the temperature decreases to 110 °C (230 °F) for 218 seconds.

Each transmission from a tire sensor contains

Scheme 25

1. A synchronization byte
2. Pressure reading
3. Temperature reading
4. Identification number
5. Remaining life of the battery, in months
6. Status information.

TPM Antenna

A TPM antenna is installed inside each wheel arch, behind the wheelarch liners. 'Twisted pair' wires connect each TPM antenna to the TPM ECU.

TPM ECU

The TPM ECU is installed below the front passenger seat, in a mounting bracket together with the Body Control Unit (BCU) and the security system tilt sensor. The TPM ECU incorporates a Radio Frequency (RF) receiver, to decode the radio signals from the antennas, and system electronics for control and diagnostics.

One of two software versions is incorporated in the TPM ECU, depending on market

1. Software version 9 is incorporated in all markets except NAS
2. Software version 10 is incorporated in NAS markets.

Power for system operation is provided by a permanent power feed and an ignition switched power feed from fuses in the passenger compartment fusebox. On a K bus connection with the instrument pack, the TPM ECU can

1. Communicate with the diagnostic socket
2. Receive road speed and ambient temperature data from the instrument pack
3. Send caution and warning messages to the instrument pack.

A hardwired connection with the BCU allows the TPM ECU to trigger the vehicle alarm if it detects rapid deflation of a tire while the vehicle is parked.

Scheme 26

TPM ECU Harness Connector C1537 Pin Details

TPM ECU Harness Connector C1537 Pin Details

Initialization

Initialization is required so that the TPM ECU can learn the identity and position of the tire sensors, and the nominal pressures of the associated tires. Initialization is invoked by pressing and holding the reset switch, with the ignition switch in position II and the engine off, until the SET TYRE PRESSURE (software version 9) or TYRE PRESSURE SET (software version 10) message appears in the instrument pack message center (approximately 4 seconds). When the switch is first pressed, a series of asterisks appear in the message center to confirm that the TPM ECU has received the switch input. The SET TYRE PRESSURE/ TYRE PRESSURE SET message goes off after approximately 16 seconds.

Initialization is required after

1. A tire pressure has been adjusted
2. A wheel has changed position, e.g. swapped axles or the spare installed as a road wheel
3. A replacement tire sensor or TPM ECU has been installed.

Note. Vehicles are built with tires at storage pressure. At PDI tires must be inflated to the correct pressure and, where fitted, the TPM system must be initialized.

After being invoked by the reset switch, initialization occurs during the subsequent drive cycle(s) when the vehicle is travelling at more than 2.5 mph (4 km/h). At lower speeds initialization is suspended, then automatically continued when the speed goes above 2.5 mph (4 km/h) again. Initialization is a transparent process that takes from 15 to 30 minutes and is conducted while driving to reduce the possibility of interference from outside RF transmission sources.

During the initialization process, if the TPM ECU incorporates software version 10, the TYRE CONTROL INACTIVE message is displayed in the instrument pack message center. If the TPM ECU incorporates software version 9, no message is displayed.

There are two phases to the initialization process: a wheel identification phase and a wheel position phase.

Wheel Identification

Wheel identification takes from 4 to 8 minutes. When the TPM ECU has received more than three transmissions from the same tire sensor, it recognizes that tire sensor as belonging to the vehicle. The TPM ECU records up to five tire sensor identities and their current pressure and temperature readings. From the pressure and temperature of each tire, the TPM ECU calculates a theoretical pressure at 20 °C (68°F) and uses this as the nominal pressure for monitoring.

The TPM ECU then begins to monitor the tires for pressure loss and continues the initialization process to determine the wheel position of the individual tire sensors.

Wheel Position

The wheel position phase takes from 3 to 15 minutes. The signals from each tire sensor are received by all four antennas, so by monitoring the strength of the signals received by each antenna the TPM ECU determines the position of the individual tire sensors and assigns them a wheel position, including, by inference, the spare wheel tire sensor (where fitted).

The TPM ECU confirms the wheel positions from the tire temperatures. When the vehicle is driven the temperature of the road wheels changes, while the temperature of the spare wheel remains relatively constant. When it detects a 4°C (7.2°F) change in temperature, the TPM ECU confirms a road wheel position for the related tire sensor. When it detects a temperature increase of less than 4°C (7.2°F) then, provided only one wheel has a temperature increase of less than 4°C (7.2°F), the TPM ECU confirms the related tire sensor in the spare wheel position. The fifth wheel can also be confirmed in the spare wheel position by default, after four road wheel positions have been confirmed.

After successful assignment and confirmation of the wheel positions, the TPM ECU checks the nominal tire pressures to ensure they are within the following limits

1. The nominal tire pressures must not be less than 1.7 bar (24.65 lbf/in 2 )
2. The nominal tire pressures of wheels on the same axle must be within 0.4 bar (6 lbf/in 2 ) of each other.

If the nominal pressures are within the limits, the TPM ECU stores them in memory in place of the previous nominal pressures. Initialization is successfully completed and the TPM ECU continues to monitor the current tire pressures against the new nominal pressures.

If a new nominal pressure is outside the limits, the TPM ECU aborts the initialization process and reverts to the previous nominal pressures for pressure monitoring. The TPM ECU also signals the instrument pack to display the CHECK TYRE PRESSURE message on the message center for 40 seconds. While the ignition is on the message is repeated at 1 minute intervals until a valid initialization is performed.

Occasionally the system may have difficulty assigning and confirming wheel positions, e.g. due to signal interference, if a spare wheel is masked by luggage, etc. If the TPM ECU cannot successfully complete the wheel position phase, it discontinues the initialization process and reverts to the previous nominal pressures for pressure monitoring. At the start of the next ignition cycle, the TPM ECU also signals the instrument pack to display the CHECK TYRE PRESSURE message.

Wheel Confirmation

At the beginning of each drive cycle, if the system is not being initialized the TPM ECU retrieves the stored wheel data from memory and checks it against the current identification and position of the tire sensors to determine if the tire sensor arrangement has changed without being initialized.

If it detects the same tire sensors installed in different positions, the TPM ECU assigns and confirms the tire sensors to their new wheel positions and retains their existing nominal pressures. At the start of the next ignition cycle, the TPM ECU signals the instrument pack to display the CHECK TYRE PRESSURE message as a reminder to check that the tire pressures are correct for their wheel positions and to initialize the system.

If it detects a new tire sensor on the vehicle, the TPM ECU signals the instrument pack to activate the TYRE CONTROL INACTIVE warning while it learns the identity, wheel position and nominal pressure of the new sensor in a similar manner to the initialization process. Once the learning process is completed, the TPM ECU signals the instrument pack to de-activate the TYRE CONTROL INACTIVE warning.

If the confirmation process cannot be completed within 30 minutes, the TPM ECU signals the instrument pack to activate the TYRE CONTROL INACTIVE warning for the remainder of the drive cycle.

If the TPM ECU detects additional tire sensors during confirmation, e.g. if additional spare wheels fitted with tire sensors are being carried in the vehicle, it disables the system, stores a 'too many wheel sensors' message and signals the instrument pack to activate the TYRE CONTROL INACTIVE warning.

Pressure Monitoring

The TPM ECU continuously compares the current tire pressures against the nominal pressures stored in memory. From each tire's current pressure and temperature, the TPM ECU calculates the theoretical pressure at 20°C (68°F) and compares the result with the tire's nominal pressure. If the current pressure varies from the nominal pressure by more than the preset limits, the TPM ECU signals the instrument pack to produce a caution or warning as appropriate.

Caution

The caution is produced when a tire pressure is less than the optimum, but still within safe limits for driving, to advise the driver that tire pressures should be checked at the next opportunity. The TPM ECU stores the event and outputs the caution to the instrument pack the next time the ignition is switched on. The caution consists of the CHECK TYRE PRESSURE message being displayed on the instrument pack message center. The caution is produced when either of the following occurs

1. A tire pressure is between 0.2 and 0.4 bar (3 and 6 lbf/in 2 ) below the nominal pressure for 10 signals in succession
2. A tire temperature is 20°C (68°F) or more below the initialization temperature for approximately 14 days (known as the 'autumn filter', this alerts the driver to check the tire pressures to compensate for a seasonal drop in the mean ambient temperature).

The caution is cancelled when the system is reinitialized. If the system is not reinitialized, the caution is repeated every 60 seconds while the ignition is on.

Warning

The warning is produced when a tire pressure is outside safe limits for driving, to advise the driver that tire pressures should be checked immediately. The warning consists of a single chime on the instrument pack sounder and the TYRE DEFECT message being displayed on the instrument pack message center. The TPM ECU outputs the warning immediately if it is detected while the ignition is on, and at the next ignition on if it is detected while the ignition is off. A warning is produced when one of the following occurs

1. A tire pressure is 0.4 bar (6 lbf/in 2 ) or more below the nominal pressure
2. A tire pressure is 16% or more below the absolute value of the nominal pressure
3. A current tire pressure is less than 1.3 bar (18.85 lbf/in 2 )
4. The spare wheel tire pressure decreases more than 0.2 bar (3 lbf/in 2 ) between successive signals (this is an additional safety feature in case a road wheel has been incorrectly assigned as the spare wheel)

A TYRE DEFECT (software version 9) or TYRE LOW/FLAT (software version 10) message is displayed if a road wheel tire suffers a sudden loss of pressure (i.e. a blow out).

Once a warning is displayed, it remains on while the ignition is on. The warning is cancelled when the tire pressure is restored within limits or the system is reinitialized.

Note. The TYRE DEFECT message will be displayed if the ignition is switched on during replacement of a tire.

Vandal Monitoring

When the vehicle security system is armed, if the TPM ECU detects a sudden loss of pressure, e.g. when a tire is slashed or the inflation valve removed, it signals the Body Control Unit (BCU) to trigger the vehicle alarm.

The TPM ECU performs self check routines and monitors the system wiring, tire sensors and signal reception for faults.

If a fault is detected, a related fault code is stored in the non volatile memory of the TPM ECU. To advise the driver of the failure, the TYRE CONTROL INACTIVE message is displayed on the instrument pack message center.

Fault codes can be accessed using T4, which communicates with the TPM ECU via the instrument pack and K bus.

Scheme 27

Scheme 28

Range Rover models from 2005 MY are equipped with a new infotainment system which includes a new feature known as 4X4 i , which is only available on vehicles fitted with satellite navigation. The 4X4 i provides the driver with additional vehicle status information which is displayed on the TSD. The information provides the driver with functional information relating to the vehicle powertrain and chassis and is of most benefit when driving off-road.

The TSD displays a graphical representation of the vehicle systems to provide an easy to understand vehicle status display. The 4X4 i system displays the following information

1. Steering angle
2. Transfer box status
3. Hill Descent Control status
4. Automatic transmission status
5. Air suspension status
6. Wheel height information
7. Compass indication
8. Venture Cam view and set-up.

Scheme 29

The Touch Screen Display (TSD) is located in the center of the fascia and is the driver control interface for the infotainment system. The TSD is connected to the MOST ring and communicates with the other components in the audio/infotainment system.

The TSD processes its own video for system operation but receives the video image data from the navigation computer via a co-axial cable for 4X4 i .

The TSD also provides driver display and control of the audio system, telephone, the rear view camera, the Venture Cam, the Traffic Message Channel and the navigation system.

The 4X4 i and other systems are operated by a combination of the physical buttons located on each side of the screen and the 'virtual' buttons displayed on the touch screen. For clarification, the physical buttons are referred to as 'buttons' and the touch screen virtual buttons are referred to as 'icons'.

The TSD is a touch sensitive, 800 X 600 pixels LCD VGA screen which displays in a 15.9:1 format.

Care should be taken with the TSD to ensure its correct operation

1. The screen should be cleaned with a lightly, water moistened cloth. Do not use chemical agents or domestic products to clean the screen or any part of the surround.
2. Only use your finger to operate the touch screen. Ensure you only use one finger to avoid incorrect entries.
3. A short light press of the touch screen is sufficient. Excessive pressure can damage the screen.

Refer to the AUDIO SYSTEM for details of the harness connectors related to the TSD.

Scheme 30

A gateway module is located behind the TSD. The gateway module is the link component between the vehicle bus systems and the infotainment system. Data from other vehicle systems is passed to the gateway module on the vehicle K-Bus from the instrument pack. The gateway module processes these signals and passes them on a CAN bus to the Integrated Head Unit (IHU). The IHU then converts the signals into data which is passed on the MOST ring to the TSD and from the TSD to the navigation computer on a private CAN.

System Functions

The 4X4 i system uses data from other systems to obtain the displayed information. The data is received from the CAN and is passed to the navigation computer via the gateway module, the IHU and the TSD.

Scheme 31

Scheme 32

The steering angle is obtained from information broadcast by the steering angle sensor on the CAN. The sensor signal is used to display the orientation of the steered wheels in relation to a plan view of the chassis layout. The steering angle is displayed by one of thirteen graphics to show the full range of steering angle from lock to lock in increments of 5 degrees from the straight ahead position.

Scheme 33

The transfer box currently active setting is obtained from information broadcast by the transfer box ECU on the CAN. The display can show low range, high range or neutral selection. The selected range icon flashes if a ratio change is in progress.

When neutral is selected, the display shows an 'N'. If the transfer box is in neutral but the automatic transmission is not in neutral, the selected gear on the transmission flashes until neutral is selected on the selector lever.

Scheme 34

The HDC system current operating condition is obtained from information broadcast by the ABS module on the CAN. The display can show HDC functionality states with the HDC icon illuminated in a green or amber color. If HDC is not selected, no HDC icon is displayed.

Green Icon

1. HDC icon permanently displayed - HDC active
2. HDC icon flashing - HDC suspended

Amber Icon

1. HDC permanently displayed - HDC fault
2. HDC icon flashing - Brake fade

Note. Refer to ' DISC ' for details of HDC operating states.

Automatic Transmission

The automatic transmission current selected gear is received from a CAN transmission from the EAT ECU. The display shows the current selector lever position of P, R, N, D, 1, 2, 3, 4 or 5. The gear position is displayed in a central position above the transfer box range icon.

Scheme 35

The air suspension status information is obtained from information broadcast on the CAN by the air suspension ECU. The display comprises six different screen displays to show all air suspension height states and transition states. During a height change the arrow head between the wheels flashes. The green line denotes the suspension position above, below or at the standard height setting. The selected height is confirmed by a symbol and text confirming the suspension status.

Scheme 36

The wheel height status information is obtained from information broadcast on the CAN by the air suspension ECU. The wheel heights are measured by the four individual height sensors and processed by the air suspension ECU.

The position of each wheel relative to the vehicle body is displayed. Upper and lower wheel travel markers are shown as white lines above and below each wheel. The positions of the wheel markers move according the air suspension height selected. When the suspension is at off-road height, the position of the travel markers move upwards to represent the 55 mm of vehicle body movement when in this mode. When the suspension is at access height, the position of the travel markers move downwards to represent the 50 mm of vehicle body movement when in this mode. When the suspension is in off-road or access height, the positions of the suspension and wheel travel markers are displayed as blue lines to show their relative positions in standard height mode.

When the maximum wheel travel is reached, the travel marker changes to an amber color and flashes for as long as the maximum travel condition exists.

Scheme 37

The compass information is obtained from the navigation computer. The compass view is the same compass view which is also displayed when the navigation system is in off-road navigation mode. The compass view replaces the wheel and body height view in the TSD. Compass view can be accessed by pressing the compass icon on the TSD. Pressing the chassis icon reverts the display back to the chassis view.

The compass view shows a plan view of the vehicle on a compass face. Depending on the compass display mode set in the navigation system, the compass can display a rotating vehicle view which moves to indicate the heading against the fixed compass points. If the heading up mode is selected in the navigation system, the vehicle view pointer will remain fixed vertically and the compass points will rotate to indicate the vehicle heading.

Venture Cam

Refer to the Venture Cam Component Location (From 2005MY) .

Scheme 38

Range Rover models from 2005 MY are equipped with Venture Cam, which is a new system developed by Land Rover. It consists of one or more remote cameras which transmit their images onto the Touch Screen Display (TSD) to provide the driver with a number of benefits, for example maneuvering the vehicle or connecting a trailer. Additionally, the system can receive video transmissions from other compatible camera units such as a home CCTV camera. The system can support up to sixteen Venture Cams and an additional four external video input units.

The Venture Cam system comprises one or more Venture Cams and a docking station. The system is connected into the infotainment system and the video images are displayed on the TSD.

The Venture Cam receives signals via a UHF transmission from the docking station for remote operation of the camera. The frequencies can be 433 MHz or 915 MHz depending on the market. The Venture Cam transmits its video images to the docking station on a 2.4 GHz RF microwave transmission. The video is provided in a PAL format at 25 frames per second. The microwave transmission is limited to an output of 10 mW to avoid conflicting with broadcasting legislation in most countries.

The Venture Cam can receive and transmit signals at a distance of between 20 and 30 meters (65 and 98 feet). This range is dependent on the surrounding environment, i.e. the signals may be blocked or limited by buildings, vehicles etc.

The Venture Cam system is connected to the TSD for video display by a co-axial cable. A CAN connection to the gateway module allows the Integrated Head Unit (IHU) to communicate with the docking station for transmission of infotainment relay energized signals etc.

Venture Cam can be accessed by selecting 4X4 information on the TSD using a physical button or a icon on the screen. Venture Cam is then selected by pressing the camera icon on the TSD.

Scheme 39

The Venture Cam is a compact unit containing hardware and software for control of the video image capture and transmission, six red LED's for an additional light source and a control button.

The control button allows the Venture Cam to be switched on or off and to activate the LED's. The selections are made sequentially with the button, e.g.; the first press switches the camera function on, the second press switches the camera off and switches the LED's on (torch function) and a third press switches the whole unit off. Using this button on the Venture Cam, only the camera or the torch function can be selected, they cannot be selected to work together at the same time. However, when in the camera function mode, the LED's can also be made active by pressing the torch icon visible in the TSD. This will allow the LED's to enhance the Venture Cam view in low ambient light levels.

When the camera mode is selected, by pressing the button once, the area around the 'Land Rover' logo button is illuminated in a blue color. If the illumination flashes, this indicates that the camera is awaiting a command from the TSD.

The Venture Cam has an integral re-chargeable battery which, when fully charged, allows approximately 3 hours continuous use of video transmission. If the unit is used solely as a torch with only the LED's illuminated, the battery will provide approximately 4 hours continued use. The Venture Cam battery has a serviceable life of approximately 8 to 10 years, depending on its usage. The battery cannot be replaced separately, so if the battery fails, the Venture Cam must be replaced.

The Venture Cam is electronic device and therefore should be handled with care. If the unit becomes dirty, clean only with a damp cloth, do not use detergents or solvent based cleaners. Avoid high temperatures, do not store the Venture Cam in direct sunlight, always store in the docking station, glovebox or door pocket.

Scheme 40

An accessory mount is available with a suction cup which allows the Venture Cam to be located inside or outside the vehicle. The holder has a removable holster into which the Venture Cam is secured. The holster has a standard camera thread which allows it to be mounted on a tripod for instance. The suction cup has a control lever which creates a vacuum to provide the suction to secure the mount. To release the suction cup, lower the lever to release the vacuum.

Battery Charging

The battery is re-charged when the unit is in the docking station. Two spring loaded pins in the docking station connect with contacts on the Venture Cam. The charging will occur only when the Venture Cam is in the docking station and the ignition switch is in position II. Power is supplied direct from the vehicle battery via a fuse in the passenger compartment fusebox and is permanently live. However, charging will only occur when the IHU receives an ignition on signal via the CAN. The IHU then sends a charge message to the docking station via its CAN connection with the gateway module. The docking station software will allow further charging of the battery for a period of 30 minutes after an ignition off signal is received from the IHU.

The battery condition is shown on the TSD Venture Cam display. A charge level indicator is displayed to indicate the charge level of the Venture Cam battery.

One segment on the battery display indicates that the battery is almost fully discharged. The docking station will apply a slow charge to the battery to ensure the battery charge is fully recovered and may stay in this mode for a long period of time, depending on how low the battery charge has become. If a rising row of segments is indicated on the battery display, the docking station is applying a fast charge to the battery and will fully charge the battery in the minimum period of time. A complete and stationary row of segments indicates a fully charged battery.

If the battery is completely discharged, it will take approximately 2 hours of continuous charging with the vehicle engine running to restore the battery to a fully charged condition.

It is recommended that the Venture Cam is stored in the docking station when not in use. The docking station will ensure that the battery is kept at the optimum charge level. If the customer has more than one Venture Cam, it is recommended that the units are cycled on a weekly basis to ensure that the battery charge level is maintained.

Scheme 41

The docking station is located in the lower part of the fascia, on the passenger side. The docking station has a latched and damped mechanism to ensure that the Venture Cam is stored securely.

The Venture Cam is removed from the docking station by gently pushing the Venture Cam inwards (towards the fascia) to release the locking mechanism. The docking station will slowly open in a controlled manner allowing the Venture Cam to be lifted from the charging holster. Pushing the Venture Cam inwards (towards the fascia) locates the Venture Cam into the docking station.

When the Venture Cam is installed back into the docking station, the illumination around the 'Land Rover' logo button changes to a blue color to indicate that a good connection has been established with the charging contacts and that charging has commenced.

The docking station receives a permanent battery feed via a fuse in the passenger compartment fusebox. A CAN connection to the gateway module provides a link with the IHU for transfer of information. A co-axial cable transmits the video signals from the docking station to the TSD.

The software contained within the docking station contains a power management strategy which monitors ignition status via CAN messages from the IHU and controls power operation for battery charging for a 30 minute period after the ignition is switched off.

Venture Cam Operation

The Venture Cam image is accessed using the 4X4 i off-road information screen on the TSD. Each Venture Cam must be learned and saved to memory before it can be used. If more than one Venture Cam is configured to the system, each one can be selected in turn using the channel selection icons.

The Venture Cam screen is accessed by pressing the Venture Cam 'movie camera' icon at the bottom of the screen. The right hand side of the TSD will display a black screen with text stating 'Venture Cam Docked' if a Venture Cam is known to the system and located in the docking station. The chassis view will remain on the left hand side of the TSD until the Venture Cam icon is pressed again. The chassis view will then be replaced with the camera/channel select information.

Scheme 42

The currently selected camera/channel icon is highlighted. Scrolling up or down the available cameras/channels allows selection of a different Venture Cam or an external video input.

A new Venture Cam can be added to the system by placing the Venture Cam into the docking station. A small window will appear prompting to 'Learn Camera'. Selecting 'OK' saves the Venture Cam into the memory. A second window will appear asking if the user wants to use the new Venture Cam now. Selecting 'Use Now' will use the new Venture Cam, selecting close will continue with the Venture Cam highlighted in the channel select list. When a new Venture Cam is added, it will be placed in the first numerically available position in the list.

Scheme 43

Venture Cams can also be deleted from the memory by selecting the applicable camera/channel input to be deleted and pressing the 'Delete' icon on the TSD. A small window will appear asking for confirmation of the deletion. Selecting 'OK' deletes that Venture Cam from the list and leaves that position empty.

If using the Venture Cam to reverse the vehicle, the view seen on the screen can become confusing to the driver. To assist with this, a mirror view is available which reverses the image similar to that seen in the rear view mirror.

The venture cam should not be used unless the vehicle is off-road. The software receives vehicle speed information on the CAN and the Venture Cam display is suspended when the vehicle speed reaches or exceeds 20 km/h (12.5 mph). The Venture Cam should only be used on the exterior of the vehicle. The mount could cause injury if attached to the vehicle interior and an accident occurs.

T4 can be used to diagnose any faults present with the Venture Cam system. A known, functional Venture Cam should be placed in the docking station and learned by the system to check that the fault is not related only to the Venture Cam.

Scheme 44

Range Rover models from 2005 MY can be equipped with a Rear View Camera (RVC) which is a new system on Land Rover vehicles. The system provides the driver with a rear view image displayed on the TSD to assist when reversing the vehicle.

The RVC is located under the rear spoiler on the upper tail door, adjacent to the center high mounted stop lamp. The RVC is connected directly to the TSD via a co-axial cable. The RVC transmits a wide angle, color image of the area at the rear of the vehicle which is displayed on the TSD when reverse gear is selected.

Control of the RVC image in the TSD is processed using CAN messages received from the vehicle systems and passed to the IHU via the gateway module. When reverse is selected, the transmission position signal is passed from the EAT ECU on the CAN. This is received by the gateway module and passed to the IHU which then instructs the TSD to display the rear view image.

The RVC image is not displayed under the following circumstances

1. The transmission is in 'D' drive and the vehicle speed is more than 16 km/h (10 mph)
2. 'D' drive has been selected on the transmission for more than the 15 seconds time-out period and the vehicle speed is less than 16 km/h (10 mph).

The RVC image can be cancelled at any time by pressing the 'return' icon in the top right hand corner of the TSD.

Rear View Camera

The RVC is selected by moving the transmission selector lever to 'R' reverse. The TSD changes automatically to RVC display and one of three different views is displayed. The last used view will be displayed. The views can be changed by pressing the 'Change' icon on the screen to give a camera rear view, a view with a reversing box and a view with reversing curves.

On the reversing box view and the reversing curves view, a red line is present which represents the rear of the vehicle. The red line reflects the shape of the rear of the vehicle and represents approximately 50 cm (2 in) from the rear of the vehicle.

Scheme 45

Camera Rear View

This mode shows a view from the camera with no guidance lines

Reversing Box

The reversing box is a series of lines overlaid on the rear view image which mark the position of the rear of the vehicle and the vehicle width. This view assists with parking and is also of benefit when connecting a trailer.

Reversing Curves

The reversing curves are two arcs overlaid on the rear view image which show the full lock of the reversing curve. Any object within either of the two arcs will be struck by the vehicle if the driver proceeds with the maneuver.

See also:
• AUDIO SYSTEM
• DISC
• Venture Cam Component Location (From 2005MY)