2010 JAGUAR XFR clock

Published: 11-May-2011
Speed Control - V8 5.0L Petrol/V8 S/C 5.0L Petrol - Speed Control - Overview
Description and Operation

OVERVIEW

Speed Control

The speed control system is integrated with the engine management system and uses fueling intervention to automatically
maintain a set vehicle speed. Once engaged, the system can also be used to accelerate the vehicle without using the
accelerator pedal.
The speed control system comprises the following components:

On/Off/Suspend switch
'+' and '-' (set/accelerate and decelerate) steering wheel switches
Resume switch
Clock spring
Speed control warning indicator.
Adaptive Speed Control

The adaptive speed control system uses a forward looking radar sensor to scan the road ahead, looking for objects that are
moving at a different rate to itself. When a target is identified the adaptive speed control system will monitor the time gap
between it and the target vehicle. When that gap falls below a set driver selected level the adaptive speed control system will
intervene slowing the vehicle by backing off the throttle and/ or applying the brakes, until the correct gap is attained.
The adaptive speed control system comprises the following components:
Adaptive speed control sensor
Adaptive speed control module
Steering wheel control switches
ECM (engine control module)
Electric throttle actuator
ABS (anti-lock brake system) module and pump
Adaptive speed control warning indicator (in the instrument cluster).

6 Clockspring 7 APP (accelerator pedal position) sensor 8 Electric throttle actuator 9 Brake lamp/brake test switch 10 Adaptive speed control radar sensor 11 Diagnostic socket 12 Instrument cluster 13 TCM (transmission control module) 14 Adaptive speed control module


SPEED CONTROL System Operation

The speed control system uses inputs from the brake lamp/brake test switch, the APP sensor, the ECM and the ABS module.
Speed control is operated by the driver using only the steering wheel switches. When speed control is active, the ECM regulates the PWM (pulse width modulation) signals to the fuel injectors to adjust the fuel supply as required to maintain the
set speed.

During speed control operation, the ECM controls vehicle speed by adjusting fuel injection duration and timing. When the accelerator pedal is pressed with speed control active, the ECM outputs a calculated throttle angle signal in place of the actual throttle angle signals produced by the APP sensor. The calculated throttle angle is derived from fuel demand.
The minimum set speed for speed control is 18 mph (30 (km/h). Speed control is automatically suspended if the following
conditions apply:

Vehicle speed falls below 18 mph (30 km/h)
The brake pedal is pressed
The cancel button is pressed
Neutral, park or reverse gear is selected
The difference between actual speed and the set speed is too great
If the engine speed becomes near to the red line (maximum engine speed)
If the accelerator pedal is used to accelerate beyond the set speed for too long.

ADAPTIVE SPEED CONTROL
The adaptive speed control system comprises the following components:
Adaptive speed control sensor
Adaptive speed control module
Steering wheel control switches
ECM
Electric throttle actuator
ABS module and pump Adaptive speed control warning indicator.

The adaptive speed control system uses a forward looking radar sensor to scan the road ahead, looking for objects that are
moving at a different rate to itself. When a target is identified the adaptive speed control system will monitor the time gap
between it and the target vehicle. When that gap falls below a set driver selected level the adaptive speed control system will
intervene slowing the vehicle by backing off the throttle and/ or applying the brakes, until the correct gap is attained. The
driver can chose between four gap settings, 1, 1.4, 1.8 and 2.2 seconds.
The system will detect but not react to the following:
Vehicles in the oncoming lane
Stationary vehicles
Pedestrians
Vehicles not in the same lane.

Adaptive speed control is active when the vehicle is moving. Adaptive Speed Control only functions when a set speed is
entered in normal speed control mode. The adaptive speed control system only intervenes with the set speed when it detects
a target vehicle, and then only if the minimum time gap is breached.

It is important to note that the system is intended for use in limited driving situations, does not remove control and
responsibility from the driver, and at all times can be quickly overridden. The adaptive speed control system is not a collision
warning system and will not react to stationary objects. The system does not operate below a minimum speed of
approximately 30 km/h (20 mph) since it is unsuitable for use in cities or congested traffic. The system is best suited to main
roads/ highways with gradual bends.
The ECM, throttle body and throttle control are unchanged from those used for non adaptive speed control variants.
The adaptive speed control system is based on the use of a front mounted radar sensor. The sensor transmits a 1.5° wide
beam forward of the vehicle and detects the returning signals reflected off other vehicles and objects ahead.
The 1.5° wide radar beam is mechanically scanned at a rate of 10 sweeps/second across a total arc of 15° centered on the

1 Set speed adjustment switch 2 Time gap switch (only on vehicles with adaptive speed control fitted) 3 Cancel switch 4 Resume switch The speed control switches are located on the RH (right-hand)side of the steering wheel. The switches are connected via fly
leads to the clock spring. The speed control switches are resistive ladder type switches which vary the resistance of a 5 volt
signal sent to them. The signal is returned along a LIN bus to the instrument cluster. The instrument cluster routes the control signals to the ECM on the medium speed CAN
Speed control is engaged by rotating the speed adjustment switch to the + or - positions. Once engaged the speed can be
varied by the speed adjustment switches. Each press of the speed adjustment switch will increase or decrease the set speed
in steps of 1 mph (2 kph).

ADAPTIVE SPEED CONTROL MODULE



The adaptive speed control module, located on the drivers side at the bottom of the 'A' post. The control module is connected
to the other vehicle systems via the high speed CAN bus. Signals from the adaptive speed control forward looking radar sensor are received on a dedicated CAN bus between the two modules.
ADAPTIVE SPEED CONTROL RADAR SENSOR



The adaptive speed control radar sensor is located in the front bumper, on the RH side above the radiator grill behind the bumper cover. The sensor is connected to the adaptive speed control, module via a private CAN bus. If the unit is replaced in service the unit must be re-aligned vertically. Horizontal alignment is achieved by putting the sensor in service mode using an
approved Jaguar diagnostic system.

7 Instrument cluster 8 Steering column motor 9 High speed CAN bus connection to other vehicle systems 10 Engine oil pressure switch 11 Steering column adjustment switch 12 Brake fluid level switch 13 LH (left-hand) steering column multifunction switch 14 Start control module 15 Clockspring 16 RH (right-hand) steering column multifunction switch 17 Engine coolant level sensor 18 Auxiliary lighting switch


WARNING INDICATOR FUNCTIONALITY System Operation



Item Description 1 LH turn signal 2 RH turn signal 3 Brake warning 4 Brake warning (NAS) 5 Forward alert 6 Automatic Speed Limiter (ASL) 7 Adaptive speed control 8 ABS (anti-lock brake system) warning 9 ABS warning (NAS) 10 Malfunction Indicator Lamp (MIL) 11 Tire Pressure Monitoring System (TPMS) 12 Airbag warning 13 Front fog lamps 14 Dynamic Stability Control (DSC) warning 15 Seat belt warning 16 Side lamps 17 High beam 18 Rearfoglamps

DTC Description Possible Cause Action B100D96
Column Lock
Authorisation -
Component
internal failure
Battery voltage at electric
steering column lock control
module too low
Torque load on steering
column
CAN fault
Electric steering column lock
control module - Internal
failure
Clear DTC, repeatedly lock and unlock car using the
key fob and retest
If fault persists, check that the vehicle battery supply
voltage is between 9-16 volts. Rectify as required
Ensure the column lock bolt movement is not
obstructed or restricted (the parked position of the
road wheels may be exerting a turning force through
the steering column, preventing the lock from
releasing. The steering wheel may need to be held
against the force to allow the column lock to
release). Clear DTC, repeatedly lock and unlock car
using the key fob and retest
If fault persists, complete a CAN network integrity
test using the manufacturers approved diagnostic
system. Alternatively, refer to the electrical circuit
diagrams and check CAN circuits between the central
junction box, the instrument cluster and the
electronic steering column lock. Refer to the electrical
circuit diagrams and check the central junction box,
the instrument cluster and the electronic steering
column lock power and ground supply circuits for short
circuit to ground, short circuit to power, open circuit,
high resistance. Repair circuit(s) as required. Clear
DTC, perform an on demand self-test and retest
If fault persists, check and install a new electric
steering column lock control module as required B102487 Start Control Unit
Smart card docking station
failure - slave node not
responding Carry out any pinpoint tests associated with this DTC using
the manufacturer approved diagnostic system. Refer to the
electrical circuit diagrams and check the smart card docking
station LIN circuit for short, open circuit. Suspect the smart
card docking station, check and install a new docking station
as required, refer to the new module/component installation
note at the top of the DTC Index B104611
Front Fog Lamp
Control Switch
Fog lamp switch circuit - short
to ground Refer to the electrical circuit diagrams and check fog lamp
switch circuit for short to ground B104615
Front Fog Lamp
Control Switch
Fog lamp switch circuit - short
to power, open circuit Refer to the electrical circuit diagrams and check fog lamp
switch circuit for short to power, open circuit B104811
Brake Fluid Level
Switch
Brake fluid level switch circuit
- short to ground Refer to the electrical circuit diagrams and check brake fluid
level switch circuit for short to ground B10A011
Wiper/ Washer
Switch
Wash/wipe circuit - short to
ground Refer to the electrical circuit diagrams and check wash/wipe
circuit for short to ground B10A015
Wiper/ Washer
Switch
Wash/wipe circuit - short to
power, open circuit Carry out any pinpoint tests associated with this DTC using
the manufacturer approved diagnostic system. Refer to the
electrical circuit diagrams and check wash/wipe circuit for
short to power, open circuit B10A611 Main Light Switch
Master lighting switch circuit -
short to ground Refer to the electrical circuit diagrams and check master
lighting switch circuit for short to ground B10A615 Main Light Switch
Master lighting switch circuit -
short to power, open circuit Carry out any pinpoint tests associated with this DTC using
the manufacturer approved diagnostic system. Refer to the
electrical circuit diagrams and check master lighting switch
circuit for short to power, open circuit B112B87
Steering Wheel
Module
Steering wheel module failure
- slave node not responding Carry out any pinpoint tests associated with this DTC using
the manufacturer approved diagnostic system. Refer to the
electrical circuit diagrams and check the clockspring LIN
circuit for short, open circuit. Suspect the clockspring, check
and install a new clockspring as required, refer to the new
module/component installation note at the top of the DTC
Index B115C7A
Transfer Fuel
Pump
Fuel pump system fault Check for fuel system jet pump or jet pump fuel level sensor
fault B1A8515
Ambient Light
Sensor
Autolamp sensor circuit - short
to power, open circuit Carry out any pinpoint tests associated with this DTC using
the manufacturer approved diagnostic system. Refer to the
electrical circuit diagrams and check autolamp sensor circuit
for short to power, open circuit

Published: 11-May-2011
Information and Message Center - Information and Message Center - Overview
Description and Operation

OVERVIEW

The message center is a LCD (liquid crystal display) located in a central position in the instrument cluster. The message center
receives CAN (controller area network) bus, LIN (local interconnect network) bus, and hardwired signals from other vehicle
system control modules to display current vehicle status information. Depending on message importance, the message center
will be backlit in white, amber or red.
The message center will display:
Fuel level
Trip computer information
Gear selected
Speed control information
Vehicle map
Clock
Turn by turn satellite navigation
Voice control text
JaguarDrive Control system messages.

Operation of the message center is controlled by software within the instrument cluster.
Refer to: Instrument Cluster (413-01 Instrument Cluster, Description and Operation).

Message Other Warnings Reason Action CRUISE NOT
AVAILABLE None Speed control cannot be engaged.
A fault has occurred in the speed
control system. Diagnose fault
using an approved Jaguar Diagnostic System. RADAR SENSOR
BLOCKED None
The adaptive speed control radar
sensor has become dirty or obstructed. Remove obstruction or clean the
radar sensor. FORWARD ALERT
OFF None
Forward alert has been switched off.
No warning will be given for objects in
the vehicles forward direction. None FORWARD ALERT None
Forward alert has been switched on or
the gap settings have changed. None FORWARD ALERT
UNAVAILABLE None
Forward Alert and Emergency Brake
Assist are not available. Use an approved Jaguar
Diagnostic System to diagnose
fault.. Warning/Message Display

Warning and information messages are displayed in the central area of the LCD. When no messages are required, an analogue clock is present on the display. The message display language can be changed by the driver using a selection menu on the
Touch Screen Display (TSD). The following table shows the possible messages which can be displayed, other visual or audible
warnings and a description of the message.

Message Other Warnings Reason Action DSC ON
DSC warning indicator
flashes for a short time. Displayed for a short time when the DSC
switch is operated to activate the DSC system. None DSC OFF
DSC warning indicator
illuminated. Displayed for a short time when the DSC
switch is operated to de-activate the
DSC system. None TRAC DSC
DSC warning indicator
illuminated. Displayed for a short time when the DSC
switch is operated to activate the TRAC
DSC system. None DSC NOT
AVAILABLE DSC warning indicator
illuminated. A fault is present in the DSC system.
A fault has occurred in the DSC
system. Interrogate ABS (anti-lock
brake system) module for faults and
diagnose fault using an approved Jaguar Diagnostic System. BRAKE FLUID
LOW
Brake warning
indicator
illuminated.
Red warning triangle
illuminated in LCD. Brake fluid level has become low and
activated low level switch. Investigate fluid loss and check brake
system for leaks. Repair system as
required and replenish brake fluid
reservoir. ABS FAULT
ABS warning indicator
illuminated.
Amber warning
triangle illuminated
in LCD. A fault is present in the ABS system. Braking system will operate but ABS will not be available. A fault has occurred in the ABS system. Interrogate ABS module for faults and diagnose fault using an approved
Jaguar Diagnostic System. BRAKE ASSIST
FAULT Amber warning triangle
illuminated in LCD. A fault is present in the braking system
preventing brake assist operation.
Braking system will operate but brake
assist will not be available and
increased effort on the brake pedal may
be required. A fault has occurred in the brake assist
system. Interrogate ABS module for faults and diagnose fault using an
approved Jaguar Diagnostic System. EBD FAULT
Red warning triangle
illuminated in LCD. A fault is present in the braking system
preventing EBD operation. Braking
system will operate but EBD will not be
available. A fault has occurred in the EBD
system. Interrogate ABS module for faults and diagnose fault using an approved Jaguar Diagnostic System. ADAPTIVE
DYNAMICS FAULT Amber warning triangle
illuminated in LCD. A fault is present in the Computer
Active Technology Suspension (CATS) or
the Adaptive Dynamic Suspension
system. Suspension will default to the
'hard' setting. A fault has occurred in the CATS
system. Interrogate the CATS or
adaptive damping module for faults
and diagnose using an approved Jaguar Diagnostic System. PARK BRAKE
APPLIED None
Parking brake has been applied when
the vehicle moving at a speed 5 km/h (3 mph) or above. None PARK BRAKE
FAULT
Brake warning
indicator
illuminated.
Red warning triangle
illuminated in LCD. A fault is present in the parking brake
system. A fault has occurred in the parking
brake system. Interrogate the parking
brake module for faults and diagnose
using an approved Jaguar Diagnostic
System.

NOTE:
TESTING

11.
Testing.
The
screen
displays
clock
hand's
rotating,
the
EXP-1080
will
automatically
advance
when
test
has
completed













NOTES:
TEMPERATURE
Ensurethatthetemperaturesensordoesnottouchanypartofthebatteryorvehicle,thiswillcausedamagenotbe
coveredunderthemidtronicswarrantyand willrequiretheunittobereturnedtoaservicecenter
10.Temperature.Aimthetemperaturesensortowardsthebatterycasing (Maintaindistanceof5cm)
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