Map sensor JAGUAR XFR 2010 1.G Owner's Manual

MANIFOLD ABSOLUTE PRESSURE SENSOR


The MAP sensor allows the ECM to calculate the load on the engine, which is used in the calculation of fuel injection time.
The MAP sensor is installed in the air inlet of the SC (supercharger). The sensor is secured with a single screw and sealed with an O-ring. A three pin electrical connector provides the interface with the engine harness.

If the MAP sensor fails, the ECM adopts a default value of 1 bar (14.5 lbf/in.2
). With a failed MAP sensor, the engine will suffer from poor starting, rough running and poor driveability.
MASS AIR FLOW AND TEMPERATURE SENSORS



The MAFT sensors allow the ECM to measure the mass and the temperature of the air flow into the engine. The mass air flow is measured with a hot film element in the sensor. The temperature of the air flow is measured with a NTC thermistor in the sensor. The mass air flow is used to determine the fuel quantity to be injected in order to maintain the stoichiometric air/fuel
mixture required for correct operation of the engine and the catalytic converters.

There are two MAFT sensors installed, one in each air cleaner outlet duct. Each MAFT sensor is secured with two screws and sealed with an O-ring. On each MAFT sensor, a five pin electrical connector provides the interface with the engine harness.
If the hot film element signal fails the ECM invokes a software backup strategy to calculate the mass air flow from other inputs. Closed loop fuel control, closed loop idle speed control and evaporative emissions control are discontinued. The engine
will suffer from poor starting, poor throttle response and, if the failure occurs while driving, the engine speed may dip before
recovering.
If the NTC thermistor signal fails the ECM adopts a default value of 25 °C (77 °F) for the intake air temperature.

MANIFOLD ABSOLUTE PRESSURE AND TEMPERATURE SENSOR













The MAPT sensor allows the ECM to calculate the air charge density immediately before it enters the cylinders. This is used to adjust the ignition timing relative to the boost pressure, and to monitor the performance of the charge air coolers.

The MAPT sensor is installed in the rear of the LH intake manifold. The sensor is secured with a single screw and sealed with an O-ring. A four pin electrical connector provides the interface with the engine harness.

THROTTLE POSITION SENSORS

The TP (throttle position) sensors allow the ECM to determine the position and angular rate of change of the throttle blade. There are two TP sensors located in the electronic throttle. See below for details of the electronic throttle. If aTP sensor fails, the ECM:
Adopts a limp home mode where engine speed is limited to a maximum of approximately 2000 rev/min
Discontinues evaporative emissions control
Discontinues closed loop control of engine idle speed.

With a failed TP sensor, the engine will suffer from poor running and throttle response.
HEATED OXYGEN SENSORS



Item Description A Upstream heated oxygen sensor B Downstream heated oxygen sensor The heated oxygen sensors allow the ECM to measure the oxygen content of the exhaust gases, for closed loop control of the fuel:air mixture and for catalytic converter monitoring.

An upstream heated oxygen sensor is installed in the outlet of each exhaust manifold, which enables independent control of
the fuel:air mixture for each cylinder bank. A downstream heated oxygen sensor is installed in each catalytic converter, which
enables the performance of the catalytic converters to be monitored.

Oxygen sensors need to operate at high temperatures in order to function correctly. To achieve the high temperatures required,
the sensors are fitted with heater elements that are controlled by a PWM (pulse width modulation) signal from the ECM. The heater elements are operated immediately after each engine start and during low load conditions when the temperature of the
exhaust gases is insufficient to maintain the required sensor temperature. The PWM duty cycle is carefully controlled to prevent thermal shock to cold sensors. A non-functioning heater delays the sensor’s readiness for closed loop control and
increases emissions.

The upstream heated oxygen sensors produce a constant voltage, with a variable current that is proportional to the lambda
ratio. The downstream heated oxygen sensors produce an output voltage dependant on the ratio of the exhaust gas oxygen to

around the vehicle. The ECM uses the AAT input for a number of functions, including engine cooling fan control. The ECM also transmits the ambient temperature on the high speed CAN bus for use by other control modules.
The AAT sensor is installed in the LH (left-hand) exterior mirror, with the bulb of the sensor positioned over a hole in the
bottom of the mirror casing.

The ECM supplies the sensor with a 5 V reference voltage and a ground, and translates the return signal voltage into a temperature.

If there is a fault with the AAT sensor, the ECM calculates the AAT from the temperature inputs of the MAFT sensors. If the AAT sensor and the temperature inputs of the MAFT sensors are all faulty, the ECM adopts a default ambient temperature of 20 °C (68 °F).

ELECTRONIC THROTTLE


The ECM uses the electronic throttle to regulate engine torque.
The electronic throttle is installed between the T piece duct, of the intake air distribution and filtering system, and the inlet of
the SC. For additional information, refer to 303-12F Intake Air Distribution and Filtering.
The throttle plate is operated by an electric DC (direct current) motor integrated into the throttle body. The ECM uses a PWM signal to control the DC motor. The ECM compares the APP sensor inputs against an electronic map to determine the required position of the throttle plate. The ECM and electronic throttle are also required to: Monitor requests for cruise control operation
Automatically operate the electronic throttle for accurate cruise control
Perform all dynamic stability control engine interventions
Monitor and carry out maximum engine speed and road speed cut outs
Provide different engine maps for the ride and handling optimization system.

A software strategy within the ECM calibrates the position of the throttle plate at the beginning of each ignition cycle. When the ignition is turned on, the ECM performs a self test and calibration routine by fully closing the throttle plate and then opening it again. This tests the default position springs and allows the ECM to learn the position of the closed hard stop. Subsequently the ECM keeps the throttle plate a minimum of 0.5 degree from the closed hard stop. AMBIENT AIR TEMPERATURE SENSOR

Published: 11-May-2011
Electronic Engine Controls - V8 S/C 5.0L Petrol - Manifold Absolute Pressure
(MAP) Sensor
Removal and Installation

Removal


NOTE: Removal steps in this procedure may contain installation details.

1. Refer to: Engine Cover - V8 5.0L Petrol/V8 S/C 5.0L Petrol (501-05 Interior Trim and Ornamentation, Removal and Installation).

2. Refer to: Cowl Vent Screen (501-02 Front End Body Panels, Removal and Installation).


3. NOTE: Some variation in the illustrations may occur, but
the essential information is always correct.
Torque: 10 Nm




















4. NOTE: Some variation in the illustrations may occur,
but the essential information is always correct.

the flow and pressure supplied by controlling the operation of the fuel pump using a PWM (pulse width modulation) output. A
LP sensor is located in the fuel feed supply line to the engine and is monitored by the ECM for fuel pump control.
Two fuel level sensors are installed in either side of the saddle tank. The sensors are a MAPPS (magnetic passive position
sensor) which provide a variable resistance to ground for the output from the fuel gage.

The fuel system also incorporates an EVAP (evaporative emission) system which is part of the on-board refueling and vapor
recovery feature. The function and operation of the system is designed to meet EVAP requirements to minimize fuel vapor losses.

1 Fuel level sensor 2 Fuel level sensor float arm 3 Fuel level sensor float Two fuel level sensors are installed in either side of the saddle tank. One is mounted on the fuel pump module, the other is
mounted on the carrier in the LH side of the fuel tank. The sensors are a float operated MAPPS (magnetic passive position sensor) which provide a variable resistance to ground for the output from the fuel gauge. The sensor is sealed from the fuel
preventing contamination of the contacts, increasing reliability. The fuel level sensors are connected to the external electrical
connector on the flange via the connector on the underside of the fuel pump module flange.

The sensor comprises a series of 51 film resistors mounted in an arc on a ceramic surface. The resistors are wired in series
with individual contacts. A soft magnetic foil with 51 flexible contacts is mounted a small distance above the film resistors. A
magnet, located below the ceramic surface, is attached to the sender unit float arm. As the float arm moves, the magnet
follows the same arc as the film resistors. The magnet pulls the flexible contacts onto the opposite film resistor contacts
forming an electrical circuit.

Message Other Warnings Reason Action expansion tank to maximum
level.
If message re-appears,
investigate coolant system for
leakage. BLIND SPOT
MONITOR NOT
AVAILABLE Amber warning triangle
illuminated LCD. Blind spot monitoring system has a fault
or vehicle speed is below threshold for system operation. Drive vehicle above threshold speed or
investigate cause of fault. BLIND SPOT
MONITOR
SENSOR
BLOCKED Amber warning triangle
illuminated LCD. A blind spot monitoring sensor has
become dirty or obstructed. Remove obstruction or clean the radar
sensor. BRAKE PADS
LOW Amber warning triangle
illuminated LCD. Brake pads have reached the service
limit. Replace brake pads. SERVICE
REQUIRED IN
XXXX MILES/km Amber warning triangle
illuminated LCD. If the vehicle is within 3,200 kilometers
(1,988 miles) of a service, the message
center will display this message. The
displayed distance will decrease in
increments of 50 km (31 miles). None SERVICE
REQUIRED Amber warning triangle
illuminated LCD. This is displayed if the distance to next
service drops below 1 km (0.6 miles). Vehicle requires service. RESETTING
SERVICE MODE Amber warning triangle
illuminated LCD. Displayed during the service reset procedure. None SERVICE MODE
RESET Amber warning triangle
illuminated LCD. Displayed when the service rest procedure has been successful. None WINTER MODE
CONFIRMED Snow mode symbol
illuminated LCD. Displayed when snow mode has been
selected. None DYNAMIC MODE
CONFIRMED Dynamic mode symbol
illuminated LCD. Displayed when dynamic mode has been
selected. None MODE CHANGE
IN PROGRESS None or Snow mode symbol
illuminated or Dynamic
mode symbol illuminated
LCDLCD Displayed when the driver has selected
an alternative JaguarDrive mode. None RECOMMEND
WINTER MODE
FOR CONDITIONS None or Dynamic mode
symbol illuminated LCD Displayed when the JaguarDrive senses
excessive wheel slip. Select winter mode. WINTER MODE
OFF None
Confirmation that winter mode has been
deselected. None DYNAMIC MODE
OFF None
Confirmation that dynamic mode has
been deselected. None WINTER MODE
FAULT Amber warning triangle
illuminated LCD. A sub-system fault is present and the
driver attempts to select a different
JaguarDrive Control mode. The message
'WINTER MODE FAULT' can also in very
rare circumstances be generated by a
fault in the JaguarDrive Control module. Investigate cause of message.
Interrogate sub-system control
modules for faults and diagnose using
an approved Jaguar Diagnostic System.
If no sub-system fault is found,
investigate JaguarDrive Control
module. DYNAMIC MODE
FAULT Amber warning triangle
illuminated LCD. A sub-system fault is present and the
driver attempts to select a different
JaguarDrive Control mode. The message
'DYNAMIC MODE FAULT' can also, in very
rare circumstances, be generated by a
fault in the JaguarDrive Control module. Investigate cause of message.
Interrogate sub-system control
modules for faults and diagnose using
an approved Jaguar Diagnostic System.
If no sub-system fault is found,
investigate JaguarDrive Control
module. SPECIAL MODES
NOT AVAILABLE Amber warning triangle
illuminated LCD. A sub-system fault is present and the
driver attempts to select a different
JaguarDrive Control mode. The message
'SPECIAL MODES NOT AVAILABLE' can
also in very rare circumstances be
generated by a fault in the JaguarDrive
Control module. Investigate cause of message.
Interrogate sub-system control
modules for faults and diagnose using
an approved Jaguar Diagnostic System.
If no sub-system fault is found,
investigate JaguarDrive Control
module. LISTENING Tone emitted from the
instrument cluster. The voice button has been pressed and
the Jaguar voice system is active and awaiting a voice command. None VOICE NOT
READY None
If the Voice button on the steering
wheel is pressed before the system is
ready to receive a command, VOICE NOT
READY will be displayed Press button a second time after a
short delay. INSERT MAP DISC None Navigation disc not loaded.
Load navigation disc in the navigation
computer. NOT AVAILABLE
PHONE IN USE None
Voice button has been pressed during a telephone call. None COMMAND NOT
RECOGNISED None
Jaguar Voice system has not recognised
the command. Repeat the command speaking clearly.

VICS (vehicle information and communication system) receiver (Japan only)
TMC (traffic message channel) receiver (Europe only)
JaguarVoice control module

The navigation computer contains a solid state piezo gyro which measures the motion of the vehicle around its vertical axis.
The gyro operates on the principle known as the coriolis force. The coriolis force is the force that appears to accelerate a body
moving away from its rotational axis against the direction of rotation of the axis.

Using inputs from the ABS module, the GPS antenna and the gyro sensor, the computer calculates the vehicle's current position, direction and speed.

The navigation computer houses the DVD (digital versatile disc) drive. The drive is used to read map data from region specific
DVD's. The number of DVD's issued per region varies depending on the amount of information available. The regions are as follows:

Europe (2 versions, Western Europe and Whole of Europe)
NAS (North American specification)
Japan, Middle East, Australia and South Africa

A button, located adjacent to the DVD slot, is provided to eject the DVD from the unit. Prior to ejecting the disc the slot protection has to be slid to the side. If the ignition is on, or the entertainment system is in 1-hour mode, one press of the
button will eject the DVD.
The navigation computer uses non-volatile memory to store settings and configuration information when it is powered down.
This process takes place just before the computer turns off.

No configuration procedure is required if the navigation computer is replaced. There is no option to calibrate the navigation
computer using the Jaguar approved diagnostic equipment; however in some regions a software download, contained in the
DVD disc, is required before the navigation system becomes operational.
MICROPHONE



A single microphone is used for hands-free operation using the JaguarVoice system. The microphone has an integrated noise
suppression system for hands-free use. The microphone is a standard directional type and is located in the front roof overhead
console. The microphone is hardwired to the IAM (integrated audio module). When replacing the microphone extra care must be
taken to make sure it is fitted into its securing clips for correct positioning and orientation.

GPS Antenna


The GPS antenna passes signals from the GPS satellites to the navigation computer for processing. The antenna is located in

Interior Lighting - Interior Lighting - Overview
Description and Operation

OVERVIEW Published: 11-May-2011

Interior lighting is provided to enable the safe entry and departure from the vehicle for the driver and passengers in low
ambient light conditions, without any manual switching of the lights.


NOTE: The term interior lamps also includes the door mirror approach lamps.

The interior lamps are controlled by the CJB (central junction box) and the RJB (rear junction box) and have 2 modes of
operation: manual and automatic. The front interior lamps in the front overhead console are operated using the 'JaguarSense'
system. The system uses capacitive proximity sensor technology for the switch operation which is integral with the overhead
console. The rear overhead console interior lamps have conventional switches.

In the manual mode the interior lamps can be switched on and off with the JaguarSense system. Positioning your hand
adjacent to each lamp in the front overhead console will switch interior lamps on or off and completely disable the interior
lamp system. In the automatic mode the interior lamp functionality is controlled by the CJB and the RJB and reacts to the vehicle being locked or unlocked and opening the vehicle doors.

In manual mode the interior lamps can be operated by placing your finger(s) close to, or touch, the surface of the appropriate
lamp. The courtesy light and map reading lamps can be operated manually by the 'JaguarSense' system. When in automatic
mode, the courtesy lamp functionality is also controlled by the CJB and the RJB and reacts to the vehicle being locked or unlocked and opening the vehicle doors. To deactivate or activate automatic illumination, touch the front courtesy lamp for
approximately 2 seconds

The driver's and passenger door approach lamps are controlled by the driver's door module and the passenger door module
respectively and operate with the automatic mode. The door modules receive a power supply from the RJB and receive information to illuminate the approach lamps on the medium speed CAN (controller area network) bus from the RJB and the CJB. www.JagDocs.com

1 LH map reading lamp bulb 2 Interior lamp bulb 3 RH map reading lamp bulb 4 Printed Circuit Board (PCB) - JaguarSense 5 Ambience lighting LED's 6 RH map reading lamp 7 Interior lamp 8 LH map reading lamp The overhead console is located near the windshield in the head lining. The console can be removed by carefully levering out
the rear edge of the housing to release 2 spring clips, and then pulling the console rearwards to release 2 locating tabs.
Removal of the console is required to replace any of the interior or map reading lamp bulbs.

The interior lamps and air bag off warning lamp in the front overhead console are common to all vehicles. The overhead
console can also contain security system intrusion detection module and volumetric sensors, sunroof switch and a voice
activation microphone depending on vehicle specification and market.

The interior lamp can operated manually using the JaguarSense feature to switch the lamp on and off. The lamp is also
controlled as part of the automatic interior lighting system.
The map reading lamps only operate manually using the JaguarSense feature to activate the lamps.

The interior and map reading lamp bulbs are located in holders which locate in a PCB. The PCB also provides for the operation
of the ambience lighting LED's, the air bag off warning lamp and the JaguarSense proximity sensors which are integral with the PCB.

The overhead console also contains 2 LED's for the ambience lighting system. The ambience lighting is part of the lighting control switch functionality and is subject to the setting of the instrument panel illumination dimmer control in the auxiliary
lighting switch. The ambience lighting provides very limited illumination of the instrument panel and floor console when the
vehicle is being driven without affecting the driver's visibility. www.JagDocs.com