1994 JAGUAR XJ6 Workshop Manual

Security System - RESTRICTED ISSUE 84
4b
A5.9.4 Door lock actuators and switch
1.
2.
3.
Examine fuse F1 in right hand 'A' post base fusebox, if blown determine reason for rupture and
renew.
Check continuity of harness wiring as shown on Fig.
1 below. Ensure secure ground connection
from lock/ unlock and deadlock (not N.A.S.) relay pins
4 and 9.
Remove the left hand rear seat hell board, gaining access to lock/ unlock and deadlock (not
N.A.S.) relays. Operate lock/ unlock and deadlock checking for audible relay operation. renew
suspect relays.
Release door lock and measure resistance between actuator unit pins
2 and 3, a value of
approximately
8Q should be recorded. Operate door lock and check that circuit between pins 2
and 3 is opened. Resistance across pins 1 and 3 should now be approximately 88.
4.
SI
+
SR SI I I sa VI II
I 1
J8S-1909
Fig. 1 Door Lock Actuator Circuit
*I N.A.S. only
*2 Not N.A.S.
X300 VSM Issue 1 August 1994 28

A5.9.5 Hood Switch
8
1.
2. Check
continuity between SLCM 22
-way connector pin 9 and ground. With hood closed open
circuit should be recorded, with hood open short circuit to ground should be recorded.
Check wiring continuity from pin
9 to switch connector pin 1, and from switch connector pin 2
to ground.
Po9c
1
Fia. 1 Hood Switch Circuit

Security System - RESTRICTED ISSUE
AS. 9.6 Horns
1.
2.
Check fuses FIO and F14 in LH engine bay fuse box; if blown determine reason for rupture and
renew.
Check wiring harness continuity from multi
-plug 26-way connector pin 24 to relay unit
connector pin
6 and column switchgear connector pin 16. Ensure secure ground connection
from column switchgear connector pin
7.
Check wiring harness continuity from fuse connector pins 7 and 8 to LH and RH horn
respectively. Ensure secure ground connection from both horn units.
Ensure that
+12V (nominal) is present at the relay connector pin.
Operate horn switches and check that
+12V (nominal) is present at the two fuse connector pins
and
at speaker connector pin 44 (both units).
Check resistance across speaker unit pins;
a value of approximately 2Q should be recorded.
P21.
1
r- I
$ I
I
I
I I I,, Fu
0
J86- 1911
Fig. 1 Horn Unit and Relay Circuit
X300 VSM Issue 1 August 1994 30

4. Remove trim to gain access to sensor and loosen fixings. Lock and arm the vehicle (an error beep
will sound indicating boot open but alarm will still set), then tilt the sensor a minimum of
15" away
from horizontal checking that the alarm is activated.
w6
Po7c
1
Fig. 1 Inclination Sensor Circuit
1
Jffi- 1912

Security System - RESTRICTED ISSUE 84
-
A5.9.8 Intrusion sensors
1. Check harness wiring continuity as shown below:
SLCM connector Sensor connector Function
Lsft-hand side sensor
pin 10 pin 2 ground
pin
11 pin 4 40kHz
pin 12 pin 5 I/P
pin 13 pin 3 +av
RightAand side sensor
pin 2 pin 2 ground
pin
3 pin 4 40kHz
pin 4 pin 1 I/P
pin 5 pin 3 +av
2. Lock and arm the vehicle while sat inside; wait 15 seconds, then attempt to cover either sensor rea
with the palm
of the hand. Check that sensor detects movement and activates alarm. Repeat test
for second sensor.
+8v P13B
40KHz P11 B
IPP128
rPloB
1
Fig. 1 Intrusion Sensor Circuit J86- 1013
Issue 1 August 1994 32 X300 VSM

AS. 9.9 Key barrel switches
1. Check
harness wiring continuity as follows:
SLCM 1hay connector Switch Function
Driver's side
pin 6 pin 11 unlock signal
pin 12 pin
10 lock signal
pin 12 ground
Passenger's side
pin 5 pin 11 unlock signal
pin
10 pin 10 lock signal
pin 12 ground
Check continuity from switch pin
10 to ground with door locked, and from switch pin 11 to
ground with door unlocked.
2.
J88 - 1814
Fig. 1 Key Barrel Switches
Issue 1 August 1994 X300 VSM 33

Security System - RESTRICTED /SUE 84
-
A5.9.10 Reader exciter coil and module
1.
2.
3.
Check fuse F4 in trunk fuse box, if blown determine reason for rupture and renew.
Check harness wiring continuity as follows:
SLCM connector Module connector Coil connector Function
ground
data code
pin 6 (16-way)
pin 19 -
pin 9 (12-way) pin 06 -
pin 11 (22-way) pin 08 - immobilization on
pin 1 pin
10 coil terminal 2
pin 9 pin 11 coil
terminal 1
pin
10 - +12v
-
-
-
ground - pin 20 -
Measure continuity between coil pins.
1
JW- 1918
Fig. 1 Reader Exciter Coil and Module Circuit
Issue 1 August 1994 34 X300 VSM

AS. 9.11 Security active indicator
0
1. Check wiring continuity from multi-plug 26-way connector pin 19 to central locking switch
connector pin 13. Ensure secure ground at switch connector pin 16.
If indicator is faulty the whole clock module must be renewed, refer to
sub-section 15.9.10. U&Q:
0
e
0
P191
1
J86.1916
Fig. 1 Security Active Indicator Circuit