2010 JAGUAR XFR battery

7 Low frequency antenna - front 8 Low frequency antenna - center 9 Low frequency antenna - rear 10 Radio frequency receiver 11 Start control module 12 CJB (central junction box) 13 Instrument cluster 14 Megafuse (250 amp)
System Operation

The passive start function prevents the vehicle from being started by unauthorized persons. It does this by immobilizing the
ignition, fuel and engine crank functions. The system is automatic and requires no input from the driver.

At the request of the CJB, the keyless vehicle module prompts each of the Low Frequency (LF) antennae to output a signal. When the Smart Key is in the vehicle cabin, it detects the LF signals and responds with a Radio Frequency (RF)
data-identification signal back to the keyless vehicle module via the RF receiver.

If the data received matches that stored in the keyless vehicle module it continues the passive start process by
communicating a 'Smart Key valid’ signal to the CJB via the medium speed CAN (controller area network) bus.

Once the CJB receives the authorization and confirms a response with an internal calculation, it passes the result to the
instrument cluster on the medium speed CAN bus.
Before the instrument cluster sends a mobilization signal to the ECMit will exchange encrypted data with: The electric steering lock mechanism to authorize unlocking the steering column.
The RJB to authorize fuel pump operation. Once the RJB receives the authorization and confirms the response with an internal calculation, it will enable the FPDM (fuel pump driver module).
The CJB to authorize the ignition status. If the drive selector is in the park position and the driver presses the brake
pedal and simultaneously presses the start/stop switch, the CJB interprets this as an engine crank request. Before the
engine crank request is allowed, the CJB compares a brake pressure signal received from the ABS module. The brake pressure signal is compared to an internally stored threshold value within the CJB. If the signal is greater than the
stored threshold value, a crank request signal is sent to the ECM on the high speed CAN bus.

Once these factors have been confirmed, and the vehicle is in 'Park', the engine can be started by pressing the brake pedal and
the Stop/Start button simultaneously.
NOTES:


If the keyless vehicle module fails to locate the Smart Key, the message 'SMART KEY NOT FOUND PLEASE INSERT IN
SLOT' will appear in the instrument cluster message center. When inserted the start control module will read the transponder
within the Smart Key. If the transponder identification is valid, authorization will be transmitted to the instrument cluster on
the LIN (local interconnect network) bus.


When the vehicle is delivered from the factory the passive start function is inhibited. In this condition the vehicle can
only be started by placing the Smart Key in the start control module. The system should be switched on during the Pre-Delivery
Inspection (PDI) using the Jaguar approved diagnostic system. For additional information, refer to the PDI Manual.

To ensure optimum long term reliability of the smart key the battery must be replaced with a brand new, unused battery. If a
used battery is installed the "SMART KEY BATTERY LOW" message may not be cleared. To avoid contamination of the contacts
the battery should be removed from its packaging and installed into the smart key while wearing gloves. To confirm that the
replacement battery is working correctly press the unlock button twice while holding the smart key outside the vehicle, then
enter the vehicle with the smart key, press the start button and confirm that the "SMART KEY BATTERY LOW" message is not
displayed.



Start Control Module Component Description

The start control module is used if the keyless vehicle module is unable to authorise the Smart Key.

If the keyless vehicle module is unable to identify the Smart Key, for example if the Smart Key battery voltage is low or there
is local RF interference, the transponder within the Smart Key can be read in the conventional manner. The driver will be
alerted to this by a chime and a message in the instrument cluster message center 'SMART KEY NOT FOUND PLEASE INSERT IN
SLOT'.

Once inserted the start control module will read the transponder within the Smart Key. If the transponder identification is
valid, authorization will be transmitted to the instrument cluster on the LIN bus.


NOTE: Inserting the Smart Key into the start control module will not charge the Smart Key battery. The battery is
non-chargeable and must be replaced if defective.

(414-01 Battery, Mounting and Cables, General Procedures).

2. Remove the LH luggage compartment side trim panel.
For additional information, refer to: Loadspace Trim Panel LH (501-05 Interior Trim and Ornamentation, Removal and Installation).

3. Release the navigation system module.
4. Remove the navigation system module.














Installation

1. Install is the reverse of removal.

(414-01 Battery, Mounting and Cables, General Procedures).

2. Remove the left hand front seat.

3. Lift the carpet for access.
4. Disconnect the 2 electrical connectors.

9 RJB (rear junction box) 10 Battery monitoring system module 11 Rear view camera 12 Driver's side rear door module 13 Driver's door module 14 Driver's seat switches 15 Driver's seat module 16 Start control module 17 Clockspring 18 Battery backed sounder 19 TCM (transmission control module) 20 Generator 21 CJB (central junction box) 22 ECM (engine control module)

Module Network System Function Vehicle Location
Steering wheel
clockspring LIN Passes digital messages from the steering wheel
audio switches to the instrument cluster. Behind the steering wheel,
on the upper steering
column.
Instrument cluster LIN Receives digital signals from other vehicle systems. On the driver's side of the
instrument panel.
Battery backed sounder LIN Activated by CJB when alarm trigger is received. In the LH side of the engine compartment, near the
bulkhead.
CJB LIN Controls body functions and power distribution. On the RH 'A' pillar.
RJB LIN Controls body functions and power distribution. On the RH of the luggage compartment.
Battery monitoring
system module

Intrusion detection
module LIN Monitors the condition and charge of the vehicle
battery.

LIN Detects movement in the vehicle interior and
activates the anti-theft system. On the vehicle battery
positive terminal in the
luggage compartment.
In the front overhead
console.
Rain/light sensor LIN Detects ambient light levels and moisture on the
windscreen for operation of the automatic
headlamps and wiper systems.
Start control module LIN Used to identify the Smart Key - component of the
keyless start system.
Rear view camera LIN Passes digital images data from the rear view
camera to the RJB On the inside of the
windshield behind the interior
rear view mirror.
In the lower instrument panel
on the driver's side.
In the luggage compartment
lid trim finisher.
Driver's window switch LIN Controls operation of the driver's window. In the driver's door trim
panel.
Electronic transmission
selector LIN Sends selector position to the TCM. In the floor console. TCM LIN Receives selector position information to control the Inside the transmission and


Information control
module

Media Oriented
System Transport
(MOST) transmission.

Contains controls for the entertainment system and
gateway between audio system and other vehicle
systems. accessible by removal of the
fluid pan.
In the instrument panel
below the integrated control
panel.
Integrated control
panel MOST Contains controls for the entertainment system. In the instrument panel.
Digital Audio Broadcast MOST Receives digital radio broadcasts. In the LH side of the luggage (DAB) receiver (SDARS
NAS only)
Bluetooth® phone
module compartment, above the
keyless vehicle module.
MOST Controls operation of the Bluetooth® phone system. Below the LH front seat, adjacent to the portable
audio module.
Amplifier/tuner MOST Provides amplification for the entertainment systems In the LH side of the luggage and reception of radio RF broadcasts.
Navigation computer MOST Reads map data from a DVD (digital versatile disc)
to calculate and display visual route guidance
information via the TSD and audible guidance via the
amplifier to the driver. compartment.
In the LH side of the luggage compartment.
Touch Screen Display
(TSD) MOST Provides the driver interface to the entertainment,
navigation and driver personalization functions. In the center of the
instrument panel.
TV tuner MOST Controls the reception of television signals and
audio/visual inputs.
Portable Audio Module MOST Controls the auxiliary inputs for additional audio
inputs via the portable audio interface. In the LH side of the luggage compartment.
Below the LH front seat, adjacent to the Bluetooth®
phone module.
MOST diagnostic
connector MOST Allows for diagnostic fault detection of the MOST
ring. Below the air ducting in the
floor console.
Refer to Communications Network section for further details.
Refer to: Communications Network (418-00 Module Communications Network, Description and Operation).

DTC Description Possible Cause Action C1B1415 Sensor Supply #1
Window position hall sensors
supply 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 test window
position hall sensors supply circuit for short to power, open circuit C1B1511 Sensor Supply #2
Hall sensor supply circuit - short
to ground Refer to the electrical circuit diagrams and test window
position hall sensors supply circuit for short to ground C1B1515 Sensor Supply #2
Hall sensor supply 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 test window
position hall sensors supply circuit for short to power, open circuit U001000
Medium Speed CAN
Communication Bus
Bus off Carry out any pinpoint tests associated with this DTC
using the manufacturer approved diagnostic system U014000
Lost Communication
With Body Control
Module
Missing message from CJB Carry out any pinpoint tests associated with this DTC
using the manufacturer approved diagnostic system U020800
Lost Communication
With Seat Control
Module "A"
Missing message from driver
seat module Carry out any pinpoint tests associated with this DTC
using the manufacturer approved diagnostic system U030000
Internal Control
Module Software
Incompatibility
Invalid configuration message is
received Re-configure the RJB using the manufacturer approved
diagnostic system. Clear the DTC and retest. If the DTC
remains suspect the DDM. Check and install a new
module as required, refer to the new module/component
installation note at the top of the DTC Index U200224 Switch
Signal stuck high Clear DTC and re-test. If DTC remains, suspect the
passenger side window switch. Check and install a new passenger side window switch U200424
Auxiliary Switch
Pack
Left or right rear door local
switch - signal stuck high Check for stuck rear window switch. Refer to the
electrical circuit diagrams and check left or right rear
door local switch circuit for short circuit U201011 Switch illumination
Rear window switch illumination
circuit - short to ground Refer to the electrical circuit diagrams and check rear
window switch illumination circuit for short to ground U201208
Car Configuration
Parameter(s)
Bus signal/message failures Cycle the ignition status and re-test. If DTC remains,
re-configure the RJB using the manufacturer approved diagnostic system U201324 Switch Pack
Signal stuck high Clear DTC and re-test. If DTC remains, install a new
driver door switch pack U201444
Control Module
Hardware
Data memory failure Suspect the DDM. Check and install a new DDM as
required, refer to the new module/component
installation note at the top of the DTC Index U210000
Initial Configuration
Not Complete
No sub type information Re-configure the DDM using the manufacturer approved
diagnostic system U300049 Control Module
Internal electronic failure Suspect the DDM. Check and install a new DDM as
required, refer to the new module/component
installation note at the top of the DTC Index U300255
Vehicle
Identification
Number
Not configured Re-configure the DDM as new using the manufacturer
approved diagnostic system and re-test. If DTC remains
install a new module, refer to the new
module/component installation note at the top of the
DTC Index U300281
Vehicle
Identification
Number (VIN)
Vehicle/component mis-match.
Corrupt VIN data being
transmitted, module previously
installed to other vehicle Check and install correct/new module as required, refer
to the new module/component installation note at the
top of the DTC Index U300362 Battery voltage
Mis-match in battery voltage, of
2 volts or more, between DDM
and RJB Carry out any pinpoint tests associated with this DTC
using the manufacturer approved diagnostic system

Published: 11-May-2011
Multifunction Electronic Modules - Remote Keyless Entry (RKE) Module
Diagnosis and Testing

Principles of Operation

For a detailed description of the Remote Keyless Entry system, refer to the relevant Description and Operation sections in the
workshop manual. REFER to: (419-10 Multifunction Electronic Modules)

Module Controlled Functions (Description and Operation), Module Controlled Functions (Description and Operation), Module Controlled Functions (Description and Operation).
Inspection and Verification


CAUTION: Diagnosis by substitution from a donor vehicle is NOT acceptable. Substitution of control modules does not
guarantee confirmation of a fault, and may also cause additional faults in the vehicle being tested and/or the donor vehicle.
1. Verify the customer concern.
2. Visually inspect for obvious signs of damage and system integrity.

Visual Inspection
Mechanical Electrical
Misaligned door(s), hood or luggage compartment lid
Door latch(s)
Actuating rod(s)
Exterior door handle(s)
Interior door handle(s)
Door lock cylinder
Cable(s)
Luggage compartment lid exterior release switch
Fuse(s)
Wiring harness
Electrical connector(s)
Door lock actuator(s)
Remote transmitter batteries
Vehicle battery
Remote transmitter
Door lock switch(s)
3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to
the next step.
4. If the cause is not visually evident, check for Diagnostic Trouble Codes (DTCs) and refer to the DTC Index.

DTC Index


CAUTION: When probing connectors to take measurements in the course of the pinpoint tests, use the adaptor kit, part
number 3548-1358-00.
NOTES:


If the control module or a component is suspect and the vehicle remains under manufacturer warranty, refer to the
Warranty Policy and Procedures manual (section B1.2), or determine if any prior approval programme is in operation, prior to
the installation of a new module/component.


Generic scan tools may not read the codes listed, or may read only five digit codes. Match the five digits from the scan
tool to the first five digits of the seven digit code listed to identify the fault (the last two digits give additional information
read by the manufacturer approved diagnostic system).


When performing electrical voltage or resistance tests, always use a digital multimeter (DMM) accurate to three decimal
places, and with an up-to-date calibration certificate. When testing resistance, always take the resistance of the DMM leads
into account.


Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.


Inspect connectors for signs of water ingress, and pins for damage and/or corrosion.


If DTCs are recorded and, after performing the pinpoint tests, a fault is not present, an intermittent concern may be the
cause. Always check for loose connections and corroded terminals.

DTC Description Possible Cause Action U300362 Battery Voltage
Mis-match in battery
voltage, of 2 volts or more,
between remote keyless
entry module and RJB Carry out any pinpoint tests associated with this DTC using
the manufacturer approved diagnostic system