Description
Instrument Cluster
NOTE:
A = Hardwired; D = High speed CAN (controller area network) bus; N = Medium speed CAN (controller area network) bus; O = LIN (local interconnect network) bus
WARNING INDICATOR FUNCTIONALITY
The functionality for each of the above warning indicators is described in the following sections:
1 and 2. Turn Signal Indicators
The turn signal indicators are controlled by the CJB (central junction box) on receipt of medium speed CAN (controller area network) bus signals from the instrument cluster.
The instrument cluster outputs a voltage to the turn signal indicator switch. The switch contains resistors of different values. When the switch is operated in either the LH (left-hand) or RH (right-hand) direction, the voltage is passed to a ground connection in the instrument cluster which detects the reduced voltage supplied via the resistors. When the turn signal indicator switch is operated in the LH (left-hand) or RH (right-hand) direction, the instrument cluster detects the ground voltage and determines whether a LH (left-hand) or RH (right-hand) selection is made.
The instrument cluster transmits a medium speed CAN (controller area network) message to the CJB (central junction box) for operation of the applicable turn signal indicators. The message can contain a number of states for each possible switch position and also an out of range low and high state for circuit faults and an initial value for the switch neutral position. The turn signal indicators are not subject to the 3 second indicator check when the ignition is switched on.
The RJB (rear junction box) software controls the flash rate of the warning indicator which sends 'ON' and 'OFF' signals to the instrument cluster which flashes the indicators in a green color. During normal operation, the warning indicator flashes slowly, accompanied simultaneously by a sound from the instrument cluster sounder. If a fault exists, the RJB (rear junction box) transmits a message to the instrument cluster which responds by displaying an appropriate message in the message center.
The hazard warning indicators are controlled by the CJB (central junction box) on receipt of a completed ground path from the hazard warning indicator switch. The CJB (central junction box) outputs a medium speed CAN (controller area network) message to the instrument cluster which operates both the LH (left-hand) and RH (right-hand) turn signal indicators simultaneously. The hazard warning indicators can operate with the ignition switched off, therefore the CAN (controller area network) message from the CJB (central junction box) will also carry a 'wake-up' message for the instrument cluster.
3. Brake Warning Indicator
This warning indicator is displayed in a red or amber color (dependant on market) as a brake symbol in all markets except United States of America (USA) which have the word 'BRAKE' in place of the symbol. The indicator is controlled by high speed CAN (controller area network) messages from the ABS (anti-lock brake system) module and the parking brake control module. The indicator is illuminated in a red color for a 3 second indicator check when the ignition is switched on.
The instrument cluster monitors the fluid level in the brake fluid reservoir using a hardwired level switch. If the fluid level falls to below a determined level, the switch contact is broken and the ABS (anti-lock brake system) module detects the low fluid level condition. The instrument cluster illuminates the warning indicator and simultaneously displays a 'BRAKE FLUID LOW' message in the message center.
NOTE:
If both the brake warning indicator and the ABS (anti-lock brake system) warning indicator illuminate simultaneously, a major fault in the brake system will have occurred.
The warning indicator also displays parking brake status. When the parking brake is applied, the warning indicator will be illuminated by the instrument cluster and, if the vehicle is moving, the message 'PARK BRAKE APPLIED' will be also displayed in the message center in response to a CAN (controller area network) message from the parking brake control module.
If a condition exists where the parking brake cannot be applied, the parking brake control module issues a CAN (controller area network) message to the instrument cluster which flashes the warning lamp on and off and is accompanied with a message 'CANNOT APPLY PARK BRAKE'. If a fault occurs in the parking brake system, the parking brake control module issues a CAN (controller area network) message to the instrument cluster which illuminates the warning indicator and displays the message 'PARK BRAKE FAULT' in the message center.
4. Forward Alert Indicator
The forward alert system uses the components of the adaptive speed control system to alert the driver of the presence of a vehicle ahead. The system can be turned on and off using a switch located in the auxiliary lighting switch when the adaptive speed control system is off. The indicator is illuminated in an amber color for a 3 second indicator check when the ignition is switched on.
The forward alert system is controlled by the adaptive speed control module. When the switch is pressed, the forward alert system is activated and the adaptive speed control module issues a forward alert active message on the high speed CAN (controller area network) bus to the instrument cluster. The forward alert icon in the instrument cluster will illuminate in an amber color and a 'FORWARD ALERT' message will be displayed in the message center. When the button is pressed a second time, the module issues a forward alert off CAN (controller area network) message. The forward alert system will be deactivated, the forward alert icon will go off and a message 'FORWARD ALERT OFF' will be displayed in the message center.
5. Automatic Speed Limiter (ASL) Indicator
The ASL is controlled by the ECM (engine control module). An ASL switch is located in the floor console, adjacent to the gear selector lever. When the ASL switch is pressed, this is sensed by the ECM (engine control module) which issues a high speed CAN (controller area network) message to the instrument cluster. The instrument cluster illuminates the ASL warning indicator in an amber color to show the driver that ASL is active. The driver sets the required speed using the speed control SET +/- switches on the steering wheel. The selected speed is shown by the message ' LIMITER SET XXX MPH / K/MH' in the message center. The indicator is illuminated in an amber color for a 3 second indicator check when the ignition is switched on. ASL can be deselected by pressing the ASL switch, by depressing the throttle pedal initiating kick-down or by pressing the 'cancel' switch on the steering wheel. The ASL indicator
will go off and the message center will display the message 'limiter cancelled' for 4 seconds. If a fault occurs in the ASL system, the ECM (engine control module) will send a message to the instrument cluster to illuminate the ASL indicator and display the message 'LIMITER NOT AVAILABLE'.
6. Adaptive Speed Control Indicator
The adaptive speed control system is controlled by the adaptive speed control module. Operation of the SET +/- switches on the steering wheel will activate the system. Operation of the switches is detected by the adaptive speed control module. The module issues a high speed CAN (controller area network) message to the instrument cluster which illuminates the adaptive speed control indicator, when the system is in 'follow mode', in an amber color and displays a 'SETSPEED XXX MPH / KM/H' message in the message center. The indicator is illuminated in an amber color for a 3 second indicator check when the ignition is switched on.
7. Anti-lock Braking System (ABS) Warning Indicator
The ABS (anti-lock brake system) warning indicator is controlled by the ABS (anti-lock brake system) module. If a fault in the ABS (anti-lock brake system) system is detected by the ABS (anti-lock brake system) module, the module issues a high speed CAN message to the instrument cluster to illuminate the ABS (anti-lock brake system) warning indicator in an amber color and display the message 'ABS FAULT' in the instrument cluster. The indicator is illuminated in an amber color for a 3 second indicator check when the ignition is switched on. If a fault is present when the ignition is on, the bulb will remain illuminated after the 3 second indicator check period.
NOTE:
The 'ABS FAULT' message is not displayed in NAS markets).
NOTE:
If both the ABS (anti-lock brake system) warning indicator and the brake warning indicator illuminate simultaneously, a major fault in the brake system will have occurred.
On NAS vehicles, the ABS (anti-lock brake system) warning indicator is also used for parking brake operation. The NAS warning indicator does not have 'ABS' on the icon and will function as described previously for the parking brake operation of the brake warning indicator.
8. Engine Malfunction Indicator Lamp (MIL)
The MIL warning indicator is controlled by the ECM (engine control module) and illuminated by the instrument cluster on receipt of a message on the high speed CAN (controller area network) bus from the ECM (engine control module). The indicator is illuminated in an amber color for a 3 second indicator check when the ignition is switched on.
If the MIL remains illuminated after the engine is started or illuminates when driving, a fault is present and must be investigated at the earliest opportunity. Illumination of the MIL warning indicator alerts the driver to an OBD (on-board diagnostic) fault which will cause excessive emissions output. This may relate to either an engine management system fault or a transmission.
9. Tire Pressure Monitoring System (TPMS) Warning Indicator
The TPMS warning indicator is illuminated by the instrument cluster on receipt of a medium speed CAN (controller area network) message from the TPMS module. The indicator is illuminated in an amber color for a 3 second indicator check when the ignition is switched on.
If the indicator illuminates and is accompanied by the message 'TIRE PRESSURE SYSTEM FAULT' in the message center, then a TPMS fault has occurred. If the indicator illuminates and accompanied by a different message, then a low tire pressure has been detected, a spare wheel has been fitted or a TPMS sensor has failed.
10. Airbag Warning Indicator
The airbag warning indicator is controlled by the instrument cluster. The indicator is illuminated in an amber color for the 3 second indicator check when the ignition is switched on. The indicator remains illuminated after the 3 second period has expired until the instrument cluster receives a turn off message on the high speed CAN (controller area network) bus from the RCM (restraints control module).
11. Front Fog Lamp Indicator
The green colored front fog lamp indicator is controlled by the CJB (central junction box) and illuminated by the instrument cluster on receipt of a front fog lamp on message on the medium speed CAN (controller area network) bus from the CJB (central junction box). The indicator is illuminated for as long as the front fog lamps are active. The front fog lamp indicator is not subject to the 3 second indicator check when the ignition is switched on.
12. Dynamic Stability Control (DSC) Indicator
The DSC warning lamp is controlled by the ABS (anti-lock brake system) module and illuminated by the instrument cluster in response to messages received on the high speed CAN (controller area network) bus. The indicator is illuminated in an amber color for the 3 second indicator check when the ignition is switched on. The DSC warning indicator, are permanently illuminated in an amber color if the instrument cluster receives a high speed CAN (controller area network) message from the ABS (anti-lock brake system) module relating to one of the following faults:
- Traction control fault
- Yaw control fault
- Engine drag torque control fault
- Panic Brake Assist (PBA) fault
- Signal missing relating to either traction control active, yaw control active or DSC switch input.
The above faults will also generate an applicable DSC and ABS warning message in the message center. The DSC warning indicator will flash at 2 Hz for if the traction control or yaw control is active when the DSC system is enabled. If the DSC system is switched off, the warning indicator will be permanently illuminated until the DSC system is subsequently re-activated.
13. Safety Belt Warning Indicator
The safety belt warning indicator operates for both the driver and passenger safety belts. The warning indicator is controlled by the RCM (restraints control module) and illuminated by the instrument cluster on receipt of high speed CAN (controller area network) bus messages. The safety belt warning indicator is not subject to the 3 second indicator check when the ignition is switched on.
The operation of the passenger seat buckle switch is as described below with the exception that the instrument cluster must receive a hardwired signal from the belt minder control module to indicate that a passenger is occupying the seat.
The safety belt warning indicator is subject to a timer. The warning indicator is activated when the following conditions exist:
- Ignition is switched on
- One of the front seat belts is unbuckled
- USA market only - 75 seconds has elapsed after ignition on mode is selected
- Vehicle is not in reverse gear
- Vehicle speed is more than 8 km/h (5 mph).
Once the above parameters are met, the instrument cluster flashes the warning indicator at 2 Hz for 10 seconds accompanied by a simultaneous chime. After 10 seconds the chime ceases and the warning indicator is permanently illuminated for 20 seconds. This sequence is repeated every 30 seconds until one of the following events occurs:
- 300 seconds has elapsed
- The safety belt of the occupied front seats is fastened
- The ignition is switched to off mode
- The vehicle speed decreases to below 5 km/h (3 mph).
NOTE:
On USA market vehicles, the warning indicator in not permanently illuminated.
The safety belt minder function cannot be disabled. The seat belt minder function can be disabled. For additional information, refer to Safety Belt System Description
14. Side Lamp Indicator
The instrument cluster controls the green colored side lamp indicator on receipt of a side lamp status message on the medium speed CAN (controller area network) bus from the CJB (central junction box) and the auxiliary junction box. The lighting switch on the LH (left-hand) steering column multifunction switch is connected to the instrument cluster. Selections using this switch are detected by the cluster which requests the side or headlamp operation via a message to the CJB (central junction box) and the RJB (rear junction box). The CJB (central junction box) and the RJB (rear junction box) responds with a side lamp active message and the cluster illuminates the side lamp indicator. The side lamp indicator is not subject to the 3 second indicator check when the ignition is switched on.
15. High Beam Indicator
The instrument cluster controls the blue colored high beam indicator on receipt of a high beam status message on the medium speed CAN (controller area network) bus from the CJB (central junction box). The lighting switch on the LH (left-hand) steering column multifunction switch is connected to the instrument cluster. High beam or flash selections using this switch are detected by the cluster which requests the light operation via a CAN (controller area network) message to the CJB (central junction box). The CJB (central junction box) responds with a high beam active message and the cluster illuminates the high beam indicator. The high beam indicator is not subject to the 3 second indicator check when the ignition is switched on.
16. Rear Fog Lamp Indicator
The amber colored rear fog lamp indicator is controlled by the auxiliary junction box and illuminated by the instrument cluster on receipt of a rear fog lamp on message on the medium speed CAN (controller area network) bus from the RJB (rear junction box). The indicator is illuminated for as long as the rear fog lamps are active. The rear fog lamp indicator is not subject to the 3 second indicator check when the ignition is switched on.
SPEEDOMETER
The speedometer is driven by high speed CAN (controller area network) signals transmitted by the ABS (anti-lock brake system) module. The wheel speeds are measured by sensors reading the rotational speed of the rear wheels from toothed targets on the hubs. An average of the two wheel speeds are passed from the sensors to the ABS (anti-lock brake system) module in the form of pulsed signals. The ABS (anti-lock brake system) module converts these signals into a speed output on the high speed CAN (controller area network) to the instrument cluster. The same speed outputs from the wheel speed sensors are also used to calculate the distance the vehicle has travelled.
TACHOMETER
The tachometer is driven by an engine speed signal transmitted on the high speed CAN (controller area network) from the ECM (engine control module). The signal is derived from the CKP (crankshaft position) sensor. The signal is received by the instrument cluster microprocessor and the output from the microprocessor drives the tachometer.
FUEL GAGE
The fuel gage is controlled by CAN (controller area network) messages from the RJB (rear junction box). The RJB (rear junction box) reads the values output by the fuel level sensors every 131 ms and transmits a fuel tank contents value, corrected for battery voltage, in a CAN (controller area network) message to the instrument cluster. A fuel pump symbol is displayed to the left of the linear gage. An arrow above the symbol shows the driver on which side of the vehicle the fuel filler cap is located. Above the linear fuel gage, is a LCD (liquid crystal display) area which displays odometer and trip readouts. When a trip computer function is selected, these are replaced by a trip computer display for the trip function selected.
LIQUID CRYSTAL DISPLAY
In the area above and below the message center is a LCD (liquid crystal display) display. The area below the message center displays a linear fuel gage, odometer, trip distance and trip computer readouts. The trip distance and trip computer information is derived from information supplied on the high speed CAN (controller area network) bus to the instrument cluster from the ABS (anti-lock brake system) module and the ECM (engine control module).
The area above the message center displays the transmission gear position information and speed control related information. The transmission information is supplied on the high speed CAN (controller area network) bus from the TCM (transmission control module).
NOTE:
There is no engine coolant temperature gage displayed. If the engine coolant temperature increases to above a predetermined threshold, a warning message is displayed in the message center. The message is sent from the ECM (engine control module) in a high speed CAN (controller area network) message to the instrument cluster.
TRANSMISSION GEAR SELECTION POSITION
The gear position display shows JaguarDrive selector position or selected gear when using the Jaguar Sequential Shift. The gear selector module transmits a CAN (controller area network) message to the instrument cluster for gear selector lever position. The module also outputs a 'not in park' signal to the instrument cluster. The TCM (transmission control module) transmits a high speed CAN (controller area network) message to the instrument cluster with data containing the selected gear when in Jaguar Sequential Shift mode.
INSTRUMENT CLUSTER - WARNING INDICATOR LOCATIONS
NOTE:
Other market variants of instrument cluster are similar.
EUROPEAN MARKET - DIESEL INSTRUMENT CLUSTER
NAS MARKET - V8 NORMALLY ASPIRATED INSTRUMENT CLUSTER
The warning indicators are located in various positions in the instrument cluster. The indicators can be split into two groups; instrument cluster controlled and externally controlled.
Instrument cluster controlled warning indicators are dependent on software logic within the instrument cluster for activation. The cluster software controls the indicator illumination check at ignition on (power mode 6).
Externally controlled indicators are supplied with current from another vehicle system control module or illuminated by the instrument cluster software on receipt of a bus message from another vehicle sub-system. The indicator illumination check at ignition on (powermode 6) is also controlled by the sub-system module for these indicators.
MESSAGE CENTER
The message center is a LCD (liquid crystal display) located in a central position in the cluster. The message center displays system status information.For additional information, refer to Information and Message Center Description
ANALOGUE GAGES
Speedometer
The analogue speedometer is located on the LH (left-hand) side of the instrument cluster and is available in 4 market variants:
- Major scale Miles Per Hour (MPH), minor scale kilometers per hour (km/h) (ROW)
- Major scale MPH, minor scale km/h (NAS)
- Major scale km/h, minor scale MPH
- Major scale km/h only.
Tachometer
The analogue tachometer is located on the RH (right-hand) side of the instrument cluster. The tachometer has different Revolutions Per Minute (RPM) scales depending on the engine variant fitted to the vehicle as follows:
- 4.2L V8 Supercharged 7000 RPM
- 4.2L V8 Naturally aspirated 8000 RPM
- 3.0L V6 Naturally aspirated 8000 RPM
- 2.7 V6 Diesel 6000 RPM.
ELECTRONIC GAGES
Fuel Gage
The linear fuel gage has a colored bar which moves left or right depending on the tank contents. As the bar moves to the left the fuel tank contents displayed is decreasing. A warning message is displayed in the message center when the fuel tank contents fall to below the reserve level.
Transmission Gear Position Display
The gear position display shows the JaguarDrive selector position or the selected gear when using the Jaguar Sequential Shift.
The applicable drive letter is highlighted to show that a selection has been made using the JaguarDrive selector.
When Jaguar Sequential Shift is selected, the letters change to numbers; 1 - 6, and the selected gear is highlighted to emphasize the selection to the driver.