Land Rover Body And Paint Air Bag And Safety Belt Rover Manual

							Failure Mode
In the event of a failure of the AFS system, a warning
indicator in the instrument cluster is illuminated to warn
the driver. The AFS warning indicator illuminates when
the ignition switch is in the ignition position (II) and
will illuminate continuously until the fault is rectified.
The AFS warning indicator will also be illuminated if
a failure of the steering angle sensor or the vehicle speed
signal is detected.
Illumination of the AFS warning indicator does not
necessarily mean that there is a fault with the AFS
system. The fault may be caused by a failure of another
system preventing the AFS system operating correctly.
The AFS control module performs a diagnostic routine
every time AFS is requested. If any fault is found, the
AFS control module will suspend the operation of the
AFS function.
If the AFS system has failed with the xenon projector
module in a position other than the correct straight ahead
position, the AFS control module will attempt to drive
the xenon projector module to the zero (straight ahead)
position. If this is not possible, the AFS control module
will lower the projector module using the levelling
actuator motors to prevent excess glare to oncoming
vehicles.
The AFS control module software can detect an internal
failure of the control module control circuits. The control
module will power the projector modules to the zero
position and prevent further operation.
Faults can be investigated by interrogating the AFS
control module using T4 to check for fault codes.
Static Bending Lamps
NOTE: The static bending lamps are not fitted to NAS
market vehicles
The static bending lamps are a standard feature on AFS
headlamps designed to illuminate the direction of travel
when cornering at low speeds. The design of the lens
projects a spread of light from the vehicle at
approximately 45 degrees to the vehicle axis. The static
bending lamps are controlled by the CJB.
The static bending lamp is incorporated into the outer
part of the headlamp assembly and shares the same
housing and reflector as the side lamp.
The static bending lamp uses a 35W Halogen H8 bulb
which locates in a holder which is connected via wires
to the main connector on the headlamp housing. The
holder is located in an aperture in the headlamp housing
and rotated to lock. The bulb is accessible via a
removable cover at the rear of the headlamp housing.
AFS Control
The static bending lamps operate with a steering angle
sensor signal which is received by the AFS control
module and the CJB. The AFS control module sends a
static bending lamp on request to the CJB which
activates the static bending lamp bulb.
At speeds above 30 mph (48 km/h), the static bending
lamp in the direction of the turn is illuminated when the
steering wheel rotation reaches 70 degrees. As the
vehicle turn is decreased, the static bending lamp is
switched off when the steering wheel rotation reaches
50 degrees.
At speed below 30 mph (48 km/h), the static bending
lamp in the direction of the turn is illuminated when the
steering wheel rotation reaches 245 degrees. As the
vehicle turn is decreased, the static bending lamp is
switched off when the steering wheel rotation reaches
225 degrees.
The operation of the static bending lamps is controlled
by the CJB. When the operation parameters of the lamp
are reached, the CJB fades the static bending lamp bulb
on using a PWM voltage over a period of approximately
2 seconds. When the lamp is switched off, the CJB fades
the bulb off by decreasing the PWM voltage.
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							AUTOMATIC HEADLAMP
OPERATION
The automatic headlamp function is a driver assistance
system. The driver can override the system operation
by selection of side lamp or headlamp on if the ambient
light conditions require front and rear lighting to be
active. The automatic headlamp system uses a light
sensor and the CJB, which are connected via the LIN
bus to control the headlamp functionality.
A light sensor is incorporated in the rain/light sensor
located on the inside of the windshield, below the rear
view mirror. The wiper system also uses the rain/light
sensor for automatic wiper operation. The light sensor
measures the ambient light around the vehicle in a
vertical direction and also the angular light level from
the front of the vehicle. The rain/light sensor uses
vehicle speed signals, wiper switch position and the
park position of the front wipers to control the system.
The automatic headlamp operation uses ambient light
levels which are monitored by photodiode incorporated
in the rain/light sensor. The rain/light sensor sends a
lights on/off request to the CJB on the LIN bus, which
responds by switching on the low beam headlamps,
front side lamps and rear tail lamps.
The automatic headlamps are activated under the
following conditions:
•Twilight
•Darkness
•Rain
•Snow
•Tunnels
•Underground or multistoried car parks.
Operation of the automatic headlamps requires the
ignition switch to be in position II, the lighting control
switch to be in the AUTO position and a lights on
request signal from the light sensor.
HEADLAMP LEVELLING
Headlamp levelling provides for the adjustment of the
vertical aim of the headlamps. The levelling system is
primarily required to minimise glare to other road users
when a heavy load is in the rear of the vehicle.
Three systems of headlamp levelling are available;
manual, static and dynamic.
Manual Headlamp Levelling
Manual headlamp levelling is only available on vehicles
with halogen headlamps and coil spring suspension.
The manual system comprises the following
components:
•Two headlamp levelling motors
•Headlamp levelling rheostat rotary control.
When the ignition switch is in the ignition position (II),
power is supplied to the lighting control switch via the
ignition relay in the battery junction box and to the
headlamp levelling motor in each headlamp assembly
via the CJB. When the lighting control rotary switch is
moved to the side lamp or headlamp position, the supply
from the ignition relay is passed to the levelling rotary
control.
Movement of the levelling rotary control produces a
variable voltage output, which is sensed by the motors.
The motors react to the supplied voltage and move the
headlamp to the requested position which relates to the
supplied voltage from the levelling rotary control.
The headlamps can only be lowered from their unladen
position to compensate for changes in vehicle attitude
due to loading.
Vehicle Headlamp Levelling
Vehicle headlamp levelling is only available on vehicles
with air suspension.
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							Vehicle headlamp levelling is performed by the air
suspension system and the air suspension control
module. The suspension system constantly monitors the
vehicle attitude and adjusts the height of the front and/or
rear of the vehicle accordingly. This maintains the
correct vehicle attitude and consequently maintains the
correct headlamp beam alignment.
The vehicle levelling system is fully automatic, therefore
the lighting control switch does not have the manual
levelling rotary control.
Dynamic Headlamp Levelling (Air Suspension)
Dynamic headlamp levelling is only available on
vehicles with the AFS system and air suspension.
The dynamic headlamp levelling adjusts the vertical
alignment of the headlamps as a rapid response to
changes in vehicle attitude due to acceleration or
braking.
The dynamic system is fully automatic, therefore the
lighting control switch does not have the manual
levelling rotary control.
NOTE: The AFS system also operates in conjunction
with the vehicle levelling system as described
previously.
The dynamic system comprises the following
components:
•Two headlamp levelling motors
•AFS control module
•Engine running signal from engine control module
•Vehicle speed information from ABS module
•Vehicle height information from air suspension
control module.
When the ignition switch is in the ignition position (II),
power is supplied to the lighting control switch via the
ignition relay in the Battery Junction Box (BJB) and to
the AFS control module. When the lighting control
rotary switch is moved to the side lamp or headlamp
position, the supply from the ignition relay is passed to
the AFS control module.
NOTE: When the AFS control module receives an
ignition on signal, the control module performs an
initialisation procedure for both the AFS and headlamp
levelling motors. Refer to the previous AFS section for
details of the initialisation procedure.
The system operates by the AFS control module
receiving inputs on the CAN from the air suspension
control module for front and rear vehicle height, from
the engine control module for engine running signal and
from the ABS module for stop lamp switch active
(brakes applied) and vehicle speed. The AFS control
module processes these signals and provides an output
to the headlamp levelling motors to adjust the headlamp
vertical aim according to vehicle speed and attitude.
NOTE: In markets with Daytime Running Lamps
(DRL), the dynamic headlamp levelling system will not
operate when the DRL are active.
DAYTIME RUNNING LAMPS (DRL)
FRONT FOG LAMP (If Fitted)
Adjuster screw1
Halogen bulb2
Bulb holder3
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							Front fog lamps are an optional fitment on low
specification vehicles and a standard fitment on high
specification vehicles.
Two front fog lamps are located in apertures in the front
bumper. Each lamp is secured in the bumper with three
screws which are covered with a finisher. The fog lamp
has an adjuster screw which is accessible by removal
of the lamp surround and is used to set the fog lamp to
the correct alignment.
The fog lamp uses a 55W halogen H11 bulb which is
located in a holder. The holder is located in a hole in
the rear of the fog lamp housing and is turned to lock
in position.
The front fog lamps are controlled by the lighting
control switch. When the ignition switch is in the
ignition position (II) and the lighting control switch is
in the side lamp or headlamp position, the lighting
control switch can be pulled to the first position to
activate the front fog lamps.
If the switch is pulled to the second position, the front
and rear fog lamps are activated. A front fog lamp
warning indicator is illuminated in the instrument cluster
when the front fog lamps are active.
Front Fog Lamps Functionality (NAS and
Canadian Markets Only)
The front fog lamps are powered by an additional relay
(relay 5) which is located in the BJB in the engine
compartment.
The front fog lamps operate as described previously but
with the following differences which cover local laws
governing lamp usage.
If the low beam headlamps and the front fog lamps are
on at the same time, when the high beam headlamps are
switched on, the front fog lamps will be automatically
switched off. When the high beam headlamps are
switched off, the front fog lamps will be switched back
on automatically.
NOTE: The front fog lamps will also be switched off
if the headlamp high beam flash function is operated.
REAR LAMP ASSEMBLY
Stop/side lamp1
Turn signal lamp2
Side lamp3
Reverse lamp4
Reflector5
Fog lamp6
Side marker lamp (NAS only)7
Stop/side lamp bulb8
Turn signal lamp bulb9
Side lamp bulb10
Reverse lamp bulb11
Fog lamp bulb12
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							The rear lamp assembly is a one piece unit which
contains a stop/tail lamp, a turn signal lamp, a second
tail lamp, a reversing lamp and a fog lamp. Five bayonet
fitting bulbs are used (six on NAS vehicles with the
addition of a side marker lamp). These are located in
holders which fit into the applicable hole in the lamp
housing and are locked by rotating. Each bulb holder is
connected by wires to a connector on the rear of the
lamp housing.
The rear lamp assembly is located in a recess in the
vehicle body. Two studs on the outer edge of the lamp
housing locate in the vehicle body. The lamp is secured
with two screws which are located on the inner edge of
the lamp housing, near the tailgate aperture.
Rear Stop and Side Lamp
The upper lamp is a combined stop and tail lamp and
uses a 21W/5W bayonet fitting bulb. The stop lamp uses
the 21W bulb filament and the tail lamp uses the 5W
bulb filament.
The stop lamp is activated when the ignition switch is
in the ignition position (II) and the brake pedal switch
is active (by depressing the brake pedal). The high
mounted stop lamp will also be activated when the brake
pedal is pressed.
The stop lamps can also be activated by the ABS when
Hill Descent Control (HDC) is active. A signal from
the ABS module energises a relay which supplies power
to the stop lamps and high mounted stop lamp.
Turn Signal Lamp
The turn signal lamp is located below the combined
stop/tail lamp and uses a 21W bayonet fitting bulb.
The turn signal lamps are operated by the left hand
steering column multifunction switch or by the hazard
flasher switch. The steering column multifunction switch
is only active with the ignition switch in the ignition
position (II), the hazard flasher switch is active at all
times. When active, the turn signal lamps will flash at
a frequency cycle of 380ms on and 380ms off.
If a bulb fails, the remaining turn signal lamp bulbs on
that side of the vehicle flash at normal speed. The
applicable turn signal indicator in the instrument cluster
will flash at double speed to alert the driver to the bulb
failure.
Side Lamp
The side lamp is located below the turn signal indicator
and uses a 21W/5W bayonet fitting bulb. Only the 5W
filament is used for the side lamp function.
The side lamps are operated by selecting side lamps or
headlamps on the lighting control switch. The side lamps
are operational at all times and are not dependant on the
ignition switch position. The side lamps will also be
illuminated when the lighting control switch is in the
AUTO position and a lights on signal is received by
the CJB from the rain/light sensor.
Reversing Lamp
The reversing lamp is located below the tail lamp and
uses a 21W bayonet fitting bulb.
The reverse lamp is active when the ignition switch is
in the ignition position (II) and the CJB receives a
reverse selected signal on the CAN bus. Both manual
and automatic transmissions have a reverse switch which
senses when reverse is selected.
Rear Fog Lamp
The rear fog lamp is located at the bottom of the rear
lamp and uses a 21W bayonet fitting bulb.
The rear fog lamp is controlled by the lighting control
switch. When the ignition switch is in the ignition
position (II) and the lighting control switch is in the side
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							lamp or headlamp position, the lighting control switch
can be pulled to the second position (if front fog lamps
fitted) to activate the front fog lamps. If front fog lamps
are not fitted, the switch need only be pulled to the first
position. A rear fog lamp warning indicator is
illuminated in the instrument cluster when the rear fog
lamps are active.
SIDE REPEATER LAMP
Side repeater1
Bulb holder2
Clip3
The side turn signal lamps are located in the driver and
passenger doors, below each door mirror. The lamps
are clipped into an aperture in the door panel and can
be removed by sliding rearwards and releasing the front
edge of the lamp from the door. The side repeater lamps
use a 5W capless bulb which is located in a holder.
The side turn signal lamps have the same functionality
as the front and rear turn signal lamps and are operated
by the left hand steering column multifunction switch
or by the hazard flasher switch. The steering column
multifunction switch is only active with the ignition
switch in the ignition position (II), the hazard flasher
switch is active at all times. When active, the side turn
signal lamps will flash at a frequency cycle of 380ms
on and 380ms off. If a lamp bulb fails, the remaining
turn signal lamp bulbs continue to flash at the normal
rate.
LEFT HAND STEERING COLUMN
MULTIFUNCTION SWITCH
RH turn signal lamp1
Headlamp flash2
LH turn signal lamp3
Headlamp high beam4
The steering column multifunction switch is located on
the left hand side of the steering column and controls
the following functions:
•Headlamp low/high beam
•Headlamp high beam flash
•Left/right turn signal lamps
•Trip computer functions.
The high beam on and flash functions are connected on
separate wires to the CJB. When the switch is operated
in either position an earth path is completed which is
sensed by the CJB which activates the selected function.
The turn signal lamps are connected and operate in a
similar way with the earth path completed through a
separate wire which is sensed by the CJB which
activates the applicable turn signal lamps.
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							HAZARD FLASHERS
The hazard flashers are controlled by a non-latching
switch in the centre of the instrument panel. The hazard
flashers operate at all times when selected and are not
dependant on ignition switch position.
When the hazard flashers are selected on, all of the front,
rear and side turn signal lamps operate as previously
described and both left and right turn signal indicators
in the instrument cluster also flash. The hazard warning
flashers flash at a rate of 380ms on and 380ms off. When
the hazard flashers are active, they override any request
for turn signal lamp operation.
If a trailer is fitted, the trailer turn signal lamps will flash
at the same frequency as the vehicle indicators. The
trailer warning indicator in the instrument cluster will
also flash. If a trailer bulb is defective, the trailer
warning indicator will not flash.
The hazard flashers can also be activated by a crash
signal from the restraints control module. This is
received by the CJB which activates the hazard flashers.
The hazard flashers can be cancelled by moving the
ignition switch to the auxiliary position I or the off
position O or the crash mode is cancelled by the
restraints control module.
LICENSE PLATE LAMPS
Two license plate lamps are fitted in the tailgate handle,
above the license plate in the upper tailgate. Each lamp
uses a 5W capless type bulb. The lamps are secured in
the upper tail gate handle with integral clips. The lamps
can be released from the handle using a small, flat blade
screwdriver.
The license plate lamps are active at all times when the
side lamps or headlamps are switched on.
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							HIGH MOUNTED STOP LAMP
High mounted stop lamp1
Housing2
The high mounted stop lamp is located in the upper
tailgate. The stop lamp housing also provides location
for the tail door window washer jet.
The lamp comprises a plastic housing with a red
coloured lens. The lamp is illuminated by a number of
Light Emitting Diodes (LEDs).
The high mounted stop lamp is activated, along with
the tail lamp stop lamps, when the ignition switch is in
the ignition position (II) and the brake pedal switch is
active (by depressing the brake pedal).
The high mounted stop lamp and the stop lamps can
also be activated by the ABS when Hill Descent Control
(HDC) is active. A signal from the ABS module
energises a relay which supplies power to the stop
lamps.
TRAILER LIGHTING
Several different types of trailer socket can be fitted to
the vehicle depending on market specifications. Refer
to the Electrical Reference Library for specific socket
details.
The CJB monitors the turn signal lamps and can detect
if more than two lamps are fitted (the side turn signal
lamps are not monitored). When a trailer is detected,
the trailer warning indicator in the instrument cluster
will flash in synchronisation with the turn signal
indicators.
If one or more of the turn signal lamps on the vehicle
or the trailer are defective, the trailer warning indicator
will not flash to alert the driver to the bulb failure.
DIAGNOSTICS
The diagnostic socket is located in the lower instrument
panel closing panel, on the drivers side, below the
steering column. Various lighting system functions are
monitored by different systems which can store fault
information. This can be retrieved using T4 or other
suitable scan tool.
AFS Control Module Fault Monitoring
The AFS control module has the capability to monitor
faults within the AFS and the dynamic headlamp
levelling system. The control module can store
Diagnostic Trouble Codes (DTCs) relating to the
symptoms shown in the following table.
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							Possible CauseCustomer SymptomDTC Symptom Description
Open circuit or short circuit to
earth
Swivelling does not functionLH or RH AFS actuator -
Communication failure
Open circuit or short circuit to
earth
Swivelling does not functionLH or RH AFS Actuator failure
Open circuit or short circuit to
earth or 12V
Levelling does not functionLH or RH Levelling Motor
Failure
Open circuit or short circuit to
earth or 12V
Swivelling and levelling do not
function. Other vehicle system
functions perhaps also inoper-
ative
CAN bus failure
Central Junction Box (CJB)
The CJB monitors the status of the lighting circuits,
relays and switches. If a fault occurs, the CJB stores a
fault code applicable to the specific fault which can be
retrieved using T4 or other suitable scan tool.
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							CONTROL DIAGRAM
Hazard warning lamps switch1Ignition relay2
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