airbag off JAGUAR S TYPE 2005 1.G Technical Guide Update

JAGUARS-TYPEOccupant Protection
37
D.418.445
SIDE IMPACT SENSORSide Impact Sensor
The side impact sensors are mounted on brackets
attached to each inner sill.
The side impact sensor contains an electronic
discriminator sensor which detects side impacts
above a set threshold and signals a deployment
request to the RCM. Bag deployment only occurs
if the side safing sensor in the RCM has also
detected an impact.
The side impact sensor monitors its own internal
state, including correct ground connection, and
sends a regular ÔheartbeatÕ signal to the RCM
indicating that it is functioning correctly and is
available.
A 2 wire cable is connected between the RCM
and the side impact sensor. The cable has a dual
function, supplying power to the side impact
sensor and transmitting digital data to the RCM.
Diagnostics
The restraints control module (RCM) performs all
SRS diagnostics except those relating to the side
impact sensor internal faults and grounding faults.
When the ignition is switched on, the RCM carries
out a system Ôprove outÕ over an 8 second period
during which the airbag warning lamp on the
instrument pack is lit for the first 6 seconds.
During the prove out period all circuits connected
to the RCM are tested and also the state of the
RCM and side impact sensors (including ground
resistance and supply voltage).
If no faults are detected, the airbag warning lamp
remains off after the 8 second period.
If a fault is detected the warning lamp flashes a
two digit code five times and then remains lit until
the ignition is switched off. This is repeated on
each ignition cycle until the fault is cleared. Fault
codes are allocated a priority and if more than
one fault is stored in the RCM memory, the
highest priority fault is flashed. When this fault is
rectified, the next priority fault is indicated.
If the warning lamp itself is inoperative, the RCM
stores a fault code but no other action occurs. If a
system fault occurs when the lamp is inoperative,
a five ÔbleepÕ audible warning is sounded five
times with 5 second intervals. The audible
warning is repeated every 30 minutes and on
subsequent ignition cycles until the fault is
cleared.
If no faults are found during the system prove out
period the RCM continues to test the SRS system
during the remainder of the ignition cycle.Fault diagnosis of the side impact sensor is
normally carried out using the portable diagnostic
unit (PDU). Where the PDU is not available, the
flashing code on the airbag warning lamp indicates
the likely circuit or component fault.

JAGUARS-TYPEElectrical/Electronic
111 Steering Column Lock
The steering column lock is remote from the
ignition switch and controlled electronically.
When the ignition key is removed from the
ignition switch the steering column lock is
engaged. The lock is disengaged when the key is
placed in the ignition switch.
The lock can be clearly heard as it engages and
disengages.
In rare circumstances it may be necessary to
gently turn the steering wheel from side to side to
release the steering column lock.
Ignition Switch
The fascia-mounted ignition switch, on the right-
hand side of the steering column, has four key
positions:
0Ignition OFF, and the only position in which
the key can be inserted or removed. When
the key is removed the steering lock is
engaged.
IAuxiliary position: this position allows use of
some electrical circuits, for example, window
operation.
The airbag system is activated when the
switch is turned to position ÔIÕ.
II Ignition ON: all electrical circuits except the
starter motor are activated. The key remains
in this position when driving.
III Start position: the starter motor is operated
for as long as the key is held in this position,
against spring pressure.
Smart Locking
This feature helps prevent locking the key in the
vehicle.
If the driverÕs door is open and an attempt is
made to lock the doors using the driverÕs door
interior locking lever, all doors will lock and the
driverÕs door only, will then become unlocked.
If the front passenger door locking lever is used to
lock the doors then all doors will become locked
and then unlocked. The vehicle can then be
locked using the key in the driverÕs door lock or a
key-ring transmitter.
Child Safety Locks
Child safety locks are fitted to the rear doors. The
operating lever is fitted above the door lock
mechanism.
To operate: Open the door and move the lever a
quarter turn. This immobilises the interior handle.
JOL.050
IGNITION SWITCH
JOL.048
The door can then only be opened using the
exterior door handle.
Open the door and move the lever to its original
position to remove the child lock feature.CHILD SAFETY LOCK