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Driver/Vehicle Information Display: Description and Operation





Information and Message Center

INFORMATION AND MESSAGE DISPLAYS

Message Center







OVERVIEW
The instrument cluster for 2010MY is an all new high definition Thin Film Transistor (TFT) display.
Designed to look similar to a conventional instrument cluster for the main display, the new display can be continually reconfigured to prioritize and refine the information presented to the driver. All displays are 'virtual' gauges with the speedometer and the tachometer being the dominant features of the new display. Messages are displayed in a central position of the cluster.
The instrument cluster displays the following information to the driver:
- Odometer - Displays the total vehicle distance travelled
- Trip meter - There are 3 trip meters available; A, B and Auto. These display the total vehicle distance travelled since the last reset
- Ambient temperature - Displays the external ambient temperature in °C or °F
- Message center - Displays system information to the driver.

ODOMETER AND TRIP METER
The odometer is located in a central position at the bottom of the TFT screen. In addition to displaying the total distance the vehicle has travelled and also the date, this area of the display can also show the following information:
- Trip distance
- Trip average speed
- Trip average fuel consumption
- Instantaneous fuel consumption
- Range available on remaining fuel.
The above selections can be made by pressing the trip button on the end of the LH (left-hand) steering column multifunction switch repeatedly until the option required is reached.
There are 3 trip recordings available to view; A, B and automatic. The instrument cluster menu is used to select which trip recording is displayed.
The automatic trip is always available and is reset each time the engine is started and the vehicle moves. Previous trips can be added to form a continuous trip recording by pressing and holding the trip button when the automatic trip information is displayed. The message center will confirm that the previous journey information has been added and pressing and holding the trip button for 1 second will add the data. The previous trip information can also be deleted by pressing and holding the trip button when the automatic trip information is displayed. The message center will confirm deletion of the previous journey data and pressing and holding the trip button for 1 second will delete the previous trip information.
Trip A and B can be reset by the driver at any time. When the required trip information is displayed, pressing and holding the trip button for 2 seconds will erase the previous trip information stored. Resetting trip A or B will not affect the other trip information, for example, if trip A is reset, trip B will retain its information until it is reset.

AMBIENT TEMPERATURE
The ambient temperature is displayed in a central position at the top of the TFT screen. The temperature can be displayed in degrees F or C and this is selectable by the driver using the instrument cluster menu.
If the external temperature falls to 4°C (39°F) or below, the external temperature display by an orange snowflake symbol.

MESSAGE CENTER
The message center is located in a central position in the instrument cluster. Other displayed information may be temporarily removed to allow for the message to be displayed.
The majority of messages are generated by the cluster which monitors system status via the bus systems and displays system information messages as requested by the controlling module. Other system control modules are also capable of generating messages to display system status. Some messages are accompanied by a chime, which is requested by the control module generating the message and generated by the instrument cluster via the sounder, which is located on the top of the cluster.
The driver can view system status messages which are current in the instrument cluster RAM. Pressing and releasing the menu control displays current messages in priority order.
The messages are assigned priorities, depending on the effect on driving safety and driving ability of the vehicle. New messages are displayed and accompanied by a chime from the sounder. Messages are divided into priority groups P1, P2 and P3. The priority groups are as follows:
- Priority Group P1 - This group includes messages which have a direct affect on the driving ability and safety of the vehicle, 'Gearbox Overheating' for example. This message requires an urgent and immediate reaction from the driver in response to the message. P1 messages are also accompanied by appropriate flashing warning indicator symbols adjacent to the message center. If more than one P1 message is present, each message is displayed in turn at 3 second intervals.
- Priority Group P2 - This group includes messages which do not directly affect driving ability or safety of the vehicle. This message must be noted by the driver and the cause rectified as soon as possible. Each message is indicated once for a maximum of 23 seconds. They can be recalled by pressing and releasing the menu control.
- Priority Group P3 - This group displays messages which relate to fluid levels, 'LOW SCREEN WASH' for example. Depending on the message, some messages are only displayed at the end of a journey, to avoid irritation to the driver.
Two other groups are defined as 'End of Journey Messages' and 'Special Messages S and S1', as follows:
- End of Journey Messages - Messages categorized as 'P1' and 'P2' error messages, are displayed again at the end of the journey. Error messages do not include messages such as 'Doors Open'. Messages in the 'P3' group are displayed after the 'P1' and 'P2' messages. New messages, which only occur at the end of a journey, 'Lights On' for example, are displayed according to their priority.
- Special Messages S and S1 - These messages have the highest priority and cannot be overridden by messages in groups 'P1', 'P2' and 'P3'. They immediately overwrite any currently displayed messages. If more than one special message is present, the message with the highest priority is displayed, after the current displayed message has been shown for at least 1 second. S and S1 messages are not displayed between any symbols.
Some messages, especially S, S1 and P messages are accompanied by a chime from the sounder to alert the driver to their presence. At the end of a journey, a single chime precedes all end of journey messages.
The messages are displayed in a language applicable to the vehicle market configuration and can be changed using the instrument cluster menu. The following list shows the possible messages which can be displayed.

NOTE:
If the instruction given in the 'Action' column does not resolve the message display, use the Diagnosis and Testing section for the applicable vehicle system to determine the fault and perform any additional action required.





































GEAR POSITION DISPLAY
The gear position is displayed in the lower half of the tachometer display. It shows the current selector position P, R, N, D or S. When the transmission is in manual 'CommandShift' mode, the display will show the currently selected gear ratio S1, S2, S3, S4, S5 or S6.
The gear position display is controlled by the TCM (transmission control module). The gear position is illuminated in response to CAN (controller area network) bus messages from the TCM (transmission control module).
The instrument cluster has no control over the gear position display, but monitors the controlling CAN (controller area network) bus messages. If the instrument cluster detects ten incorrect CAN (controller area network) bus messages, 'TRANS. FAILSAFE PROG' is illuminated in the message center. If a correct CAN (controller area network) bus message is received when the ignition is next switched on to ignition mode 6, the error is erased and the message removed.

SERVICE INTERVAL INDICATOR
The Service Interval Indicator is displayed in the message center. The indicator displays information calculated by the ECM (engine control module) to calculate the remaining distance to the next service based on the amount of fuel used since the last service interval indicator reset.
The ECM (engine control module) counts down the distance to engine service and the instrument cluster rounds this down to the nearest 50 miles (KM). The fuel used based count down starts from 3200 miles (km) displaying the required figure in the trip computer message center, for example 'Service Required in 1950 miles (km)'. When the ECM (engine control module) has calculated the distance to service is 0 miles (km), the ECM (engine control module) will request the instrument cluster to display 'Service Required' in the message center.
The ECM (engine control module) also monitors and calculates when the time to the next oil service is required and when an oil service is required, 'Service Required' is displayed in the message center. This message takes priority over the distance to service calculation.
The service information is displayed in the message center for 4 seconds at each ignition cycle. There is no minus figure if the service distance is exceeded, 'Service Required' is displayed until the ECM (engine control module) service counter is reset using an approved Land Rover diagnostic system via a CAN (controller area network) bus message from the instrument cluster.

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