2005 JAGUAR S TYPE power steering

JAGUARS-TYPEChassis
60
D.211.255
ELECTRICALLY ADJUSTABLE STEERING COLUMN
Adjustable Column Assembly
The electrically powered upper steering column
assembly provides adjustment for 16û of steering
wheel tilt and 50mm of reach (telescoping
movement) and also features automatic wheel tilt
on entry and exit. A combined joystick and on/off
switch on the side of the column shroud controls
the the tilt and reach movements (see page 106).
Where fitted, the two position memory system
stores settings for steering wheel tilt and reach
together with seat and mirror positions.
The upper column assembly comprises the
following :
¥ The fixed sub-assembly forms a supporting
outer enclosure for the column and consists
of two aluminium extrusions and a steel
stiffening plate bolted together with the lower
extrusion bolted to a lower casting. The
steering column runs in a bearing in the
lower casting which also carries the tilt and
reach drive motors. The complete column
assembly is fixed to the car cross beam via
four bolts to the lower extrusion.¥ The moving section consists of an aluminium
inner housing running on top and bottom ball
bearings within the fixed enclosure and
supporting the tilt head casting. The
telescoping upper section of the steering
column passes through this inner housing and
connects to the steering wheel shaft via a
universal joint located in the tilt head casting.
¥ The tilt and reach motors have integral
gearboxes which directly drive screw
actuators via flexible shafts.
¥ The tilt and reach position measuring
potentiometers, for the driver memorised
positions, are combined in a single
component with linear sliders which are
directly driven by the moving actuators.
¥ Connection to the lower steering column
assembly is via a rag joint (rubber Ôdo-nutÕ
type coupling).
¥ The dynamic stability control (DSC) sensor
ring is located on the column with the sensor
unit fixed to the drive motors (see section on
DSC).
Tilt Motor
Reach MotorRag Joint
SCLM
DSC Sensor Ring
DSC Sensor
Tilt Coupling
Tilt Pivot

JAGUARS-TYPEChassis
62
J.211.257
STEERING COLUMN LOCK MODULE
Steering Column Lock (where fitted)
Lock Operation
The steering column lock module (SCLM) and
ignition key switch are separate assemblies and
activation of the lock is remotely controlled by the
instrument pack, GECM and RECM. The column is
unlocked on insertion of the ignition key and is
locked when the key is withdrawn.
The SCLM is mounted on top of the lower casting,
on the upper column assembly, by two shear
bolts. A locking bolt projects down from the SCLM
through a hole in the lower casting to engage into
a splined collar on the steering column. The SCLM
is an integrated non-serviceable assembly, housinga motor and worm drive for the locking bolt and
also an electronic printed circuit board. When
activated, the locking bolt is driven positively in
both the lock (down) and unlock (up) directions
and has a spring to help locate it into the trough
of the splined collar. When disengaging, the
locking bolt is driven upwards until it operates a
microswitch (within the SCLM) which causes the
motor to stop and also signals via the SCP bus that
the steering lock is off. To engage the lock, the
motor is energised for 350ms to lower the bolt.
System Control
The lock motor is powered by a switched 12V line
from the RECM and switched ground line from the
GECM, with both supplies being applied only
during lock operation. Initiation of motor drive
and direction and power supply switching is
controlled by the instrument pack via the SCP bus
when ignition key insertion or withdrawal is
detected. Identification is checked between the
SCLM and the other modules and the system will
not operate if, for example, a module has been
replaced and not re-programmed. System
diagnostics include defective modules and
incorrect module identification and also certain
SCLM faults, ie unconfimed lock or unlock
conditions and failed microswitch.
Steering Column Shrouds
The upper part of the column assembly is
enclosed by two plastic shrouds, upper and lower.
The steering column adjust switch, controlling tilt
and reach for the electrically powered steering
column assembly, is mounted on the side of the
lower shroud.
SCLM

JAGUARS-TYPEElectrical/Electronic
72
Module Communications Network
ISO9141 DIAGNOSTICS LINK
Powertrain
Control Module
ABS/TC
Control Module
Dynamic Stability
Control Module
Restraint
Control Module
Adaptive Damping
Control Module
Park Aid
Control Module
Data Link
Connector
PCM Flash Programming Link
Serial Data Link The multiplexed electrical architecture is used for
the exchange of information between control
modules, the instrument pack and the data link
connector.
Multiplexing allows more than one piece of
information to be carried along a wire. In this
way, the electronic control modules can
communicate with each other quickly and share
information. With multiplexing, just two
intertwined wires carry information to any control
module on the network. On the SCP system
hundreds of messages a second can be
transmitted; the maximum waiting time is only a
few hundred milliseconds. An additional benefit is
that the modules ÔsleepÕ when not in use,
reducing battery drain.Principles of Operation
The vehicle has two module communication
networks. The first is the Standard Corporate
Protocol (SCP - J1850 SAE standard)), which is an
unshielded twisted pair cable: data bus plus and
data bus minus. The second is the International
Standard Organization (ISO) 9141 communication
network, which is a single wire network. Both
networks can be connected to the PDU tester by
one connector: the data link connector. The data
link connector is located under the instrument
panel, between the steering column and the audio
unit.
The ISO 9141 communications network does not
permit inter-module communications. When the
PDU tester communicates to modules on the ISO
9141 communication network , the PDU must ask
for all information; the modules initiate
communications.

JAGUARS-TYPEElectrical/Electronic
73 STANDARD CORPORATE PROTOCOL (SCP) NETWORK
Powertrain
Control Module
Vehicle Emergency
Control Module
Throttle Actuator
Control Module
General Electronic
Control Module
Rear Electronic
Control Module
Navigation
Control Module
Adaptive Damping
Control Module
Voice Activation
Control Module
Air Conditioning
Control Module
Data Link
Connector
Instrument
Pack
Audio Unit
Steering Column
Lock Module
Dynamic Stability
Control Module
Secondary
Junction BoxDriver Seat
Control Module
Driver Door
Control Module
ABS/TC
Control Module

JAGUARS-TYPEElectrical/Electronic
74The SCP communication network will remain
operational even with severing of one of the bus
wires. Communications will also continue if one
of the bus wires is shorted to ground or battery
positive voltage (B+), or if some , but not all,
termination resistors are lost.
Unlike the SCP communication network, the
ISO 9141 communication network will not
function if the wire is shorted to ground or battery
positive voltage (B+). Also, if one of the modules
on the ISO 9141 network loses power or shorts
internally, communication to that module will fail.
Control Modules
The vehicle control module functions are
described briefly below (for further information
refer to the relevant sections throughout the
Guide).
Anti Lock Brake/Traction Control and
Dynamic Stability Control, Control Modules
The anti-lock brake control module is connected
to the SCP communication network. The module
comes in two forms. The first type is the standard
equipped anti-lock brake system (ABS) with
traction control (TC). It controls the brake
pressure to the four wheels to keep the vehicle
under control while braking.
The second type of ABS is optional and is called
dynamic stability control (DSC). This control
module adds yaw sensors to the package to help
in sensing a loss of vehicle control.
Audio Control Unit
The audio control unit is connected to the SCP
communication network and also to the audio
control protocol (ACP) communication network.
The audio control unit communicates with the
compact disc and the cellular phone transceiver.
Driver Door Control Module (DDCM)
DDCM is connected to the SCP communication
network. The module controls many functions
including power windows, driver mirror, power
locks, and keyless remote entry.Driver Seat Control Module (DSCM)
The DSCM is connected to the SCP
communication network. The DSCM is located
under the driver seat and controls the seat
positions. The module also communicates with the
DDCM to control the driver seat memory
functions.
Control Module Locations
Key to illustration on following page:
1.Anti-lock brake system/Traction control
system or Dynamic stability control
(ABS/TCCM or DSCCM)
(non-handed)
2.Throttle actuator control module (TACM)
(non-handed)
3.Powertrain control module (PCM) (handed)
4.Air conditioning control module (A/CCM)
(non-handed)
5.Restraint control module (RCM) (non-handed)
6.Sliding roof control module (SRCM)
(non-handed)
7.Passenger seat heater control module
(PSHCM) (non-handed)
8.Rear electronic control module (RECM)
(non-handed)
9.Vehicle information control module (VICM)
(Japan only)
10.Adaptive damping control module (ADCM)
(non-handed)
11.Parking aid control module (PACM)
(non-handed)
12.Navigation control module (NCM)
(non-handed)
13.Vehicle emergency control module (VECM)
(non-handed)
14.Voice-activated control module (VACM)
(non-handed)
15.Cellular telephone control module (CTCM)
(non-handed)
16.Driver seat heater control module (DSHCM)
(non-handed)
17.Driver seat control module (DSCM) (handed)
18.Driver door control module (DDCM)
(handed)
19.Instrument pack (handed)
20.General electronics control module (GECM)
(non-handed)
21.Steering column lock module (SCLM) (handed)

JAGUARS-TYPEElectrical/Electronic
76Air Conditioning Control Module (A/CCM)
The A/CCM is connected to the SCP
communication network. The A/CCM controls
automatic climate functions that maintain the
vehicle at a constant temperature setting.
Instrument Pack
The instrument pack is connected to the SCP
communication network. The instrument pack
displays information received on the SCP
including speedometer, odometer, fuel, and
message center warnings. The instrument pack
also controls the passive anti-theft system (PATS).
General Electronic Control Module (GECM)
The GECM is connected to the SCP
communication network. This module is located
behind the LH ÔAÕ post trim panel below the
fascia. The GECM controls many of the bodysystems, being directly linked to the interior
lighting, wiper and security systems. It is a support
module for other systems including exterior
lighting, locking, remote entry, mirrors
(passenger), seat/mirror/steering column memory
recall and windows.
Rear Electronic Control Module (RECM)
The RECM is connected to the SCP
communication network. This module is located in
the passenger side luggage compartment behind
the trim panel. The RECM controls the
locking/unlocking of the front passenger and rear
doors and provides power control of the fuel
pump.
Powertrain Control Module (PCM)
The PCM is connected to the SCP communication
network. For the location of this module see the S-
TYPE Powertrain Technical Guide The PCM
controls the engine performance, electronic
ignition, emission controls, speed control,
transmission and on board diagnostics.
Steering Column Lock Module (SCLM)
The SCLM is connected to the SCP communication
network. The module is an integrated unit
containing the steering column lock and lock drive
and is controlled remotely from the separate
ignition barrel.
Restraints Control Module (RCM)
The RCM is connected to the ISO 9141
communication network. The RCM controls the
deployment of the air bags based on sensor
inputs.
Vehicle Emergency Control Module (VECM)
The VECM is connected to the SCP
communication network. The module allows a
user to request emergency assistance (police,
ambulance, fire, wrecker) or directions to a
desired location at the touch of a button. Also, if
any of the vehicleÕs airbags are deployed while the
VEMS system is powered ON, the system
automatically issues a call for emergency
assistance.
Voice Activation Control Module (VACM)
The VACM is connected to the SCP
communication network. This module is located in
the driver side luggage compartment behind the
trim panel. The VACM controls and processes all
D.418.229
GENERAL ELECTRONIC CONTROL MODULE (GECM)
Inertia Switch
Secondary
Junction Box
General Electronic
Control Module

JAGUARS-TYPEElectrical/Electronic
82No Type Rating (amps) Colour Circuit
15 mini 5 Brown Adaptive damping module (ADRC)
16 mini 5 Brown Heated seat switch module,
electrochromic mirror, rain sensor
17 mini 5 Brown RCM, Generator warning lamp
18 mini 20 Yellow Radio, cellular phone, navigation unit
19 mini 15 Blue Steering column motors
20 mini 10 Red GECM, DATC, RECM, Instrument Pack,
brake shift interlock
21 mini 10 Red Power folding mirrors, electric sunblind
22 mini 10 Red DriverÕs door mirror, driverÕs door lock
motor
23 mini 10 Red Right-front high beam
24 mini 5 Brown Passive Anti-Theft System (PATS)
25 mini 10 Red Left-front low beam headlamp
26 - - - Not used
27 mini 10 Red Navigation display, radio, phone,
navigation module, Traffic Master
28 mini 5 Brown Battery-backed security sounder
29 mini 5 Brown Voice control, reversing aid, GECM,
Trailer tow ignition sense, VEMS
30 mini 5 Brown GECM
31 - - - Not used
32 mini 20 Yellow Accessory socket, cigar lighter
33 mini 10 Red GECM illumination power
34 - - - Not used
35 mini 5 Brown Stop lamp switch
Trunk Fusebox
No Type Rating (amps) Colour Circuit
1 mini 15 Blue Luggage compartment release solenoid
2 mini 10 Red Right rear direction indicators, back up,
fog lamps, side markers
3 mini 10 Red Left stop lamp
4 mini 10 Red Fuel door release solenoid
5 mini 10 Red Courtesy and map lamps
6 mini 10 Red Left rear direction indicators, back up,
fog lamps, side markers
7 mini 10 Red Right stop lamp
8 mini 10 Red Center high mounted stop lamp
9 mini 5 Brown Heated mirror
10 mini 5 Brown Traffic Master
11 mini 15 Blue Heated seats

JAGUARS-TYPEElectrical/Electronic
108
Security and Locking Systems
Introduction
The following security and locking features are
available but vary by market or options:
¥ Key barrel on driverÕs side only
¥ Encrypted engine immobilization by ignition
key transponder
¥ Radio frequency remote fob
¥ Central locking by key and remote fob
¥ Double locking (not in North America, Japan,
Taiwan)
¥ Drive away door locking
¥ Mechanical child locks on rear doors
¥ Perimeter alarm of doors, bonnet, trunk
¥ Intrusion sensing, ultrasonically sensed (not
in North America, Japan, Taiwan)
¥ Inclination (tilt) sensing (Dealer fit accessory)
¥ Panic alarm, fob operated (certain markets)
¥ Trunk lock isolate (valet lockout, see page
107) - North America only
¥ Electro/mechanical steering column lock
The following convenience features are included
either as standard or optional features:
¥ Remote fob operated driverÕs seat, door
mirrors and steering column memory recall
(two memories)
¥ Remote fob operated trunk lid release
¥ Key operated global close (sliding roof and all
windows)
¥ Key and fob remote-operated global open
(sliding roof and all windows)
¥ Trunk lid and fuel flap interior release buttons
¥ Trunk release button in trunk plinth
¥ Emergency key lock barrel under trunk plinth.
System Description
The security system is controlled by a driver door
control module (DDCM). When activated
unauthorized entry in to the vehicle is detected by
the courtesy lamp switches. When the alarm is
triggered, the system flashes the turn signal lamps
and sounds the alarm system horns.
The passive anti-theft system (PATS) is a feature to
prevent the vehicle being driven away by an
unauthorized person. The PATS system consists of
electronically coded keys, a transceiver and is
controlled by the Instrument Pack. When the
ignition is switched to position ÔIIÕ, the transceiver
energises the ignition key to read its electroniccode that is transmitted back. If the read code
equals a stored code in the control module, the
steering column is unlocked and the powertrain
control module (PCM) will let the engine start.
Otherwise, starting of the engine is disabled
(through the starter disable relay and the PCM).
The security indicator LED provides the driver
with the status of the PATS or security system. If
the security system is armed the light will flash
when the ignition is switched OFF. The PATS light
will illuminate when the key is inserted into the
ignition lock and turned to position ÔIIÕ. It will stay
illuminated until the system has carried out its test
on the key. If the system detects a fault, it will
flash the LED for 1 minute, and then flash out the
corresponding 2 digit fault code.
Security System Operating Components
Key to illustration on the following page:
1. Four button transmitter (North America/Rest
of the World)
2. Three button transmitter (Europe/Japan)
3. Trunk release switch
4. Trunk compartment actuator
5. Intrusion sensor
6. Door actuator
7. Driver door control module
8. Data link connector
9. General electronic control module
10. PATS transceiver module
11. Hood switch
12. Security LED
13. Horns
14. Security horn
15. Security sounder
16. Intrusion sensor
17. Rear electronic control module