1994 JAGUAR XJ6 ECU

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

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

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

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

Pt
P2Ob
A5.9.12 Sounder
Check harness wiring continuity from multi-plug 26-way connector pins 13 and 26 to sounder
connector pins
2 and 1 respectively.
Measure resistance across sounder pins; a value
of 8Q should be recorded.
X300 VSM Issue 1 August 1994 36 ~ ~~~
1
J86 - 1917
Fig. 1 Security Sounder Circuit
X300
VSM

1
Security System - RESTRICTED /SSUE
AS. 9.14 Trunk lid release switches
Check harness wiring continuity from multi-plug 12-way connector pin 2 to external trunk
release switch connector pin 10. Ensure secure ground connection from switch pin
5.
Check harness wiring continuity from multi-plug 22-way connector pin 8 to internal trunk
release switch connector pin 1. Ensure secure ground connection from switch pin
2.
Test continuity across switch pins, operate switch and ensure short circuit occurs. 3.
X300 VSM Issue 1 August 1994 38
*
J88- 1919
Fig. 1 Trunk Lid Release Switches
X300 VSM

Security System - RESTRICTED ISSUE 84
-
AS. 10 INCLINATION SENSOR - RENEW
SRO 86.52.21
. Remove the trunk floor carpet.
. Remove the trunk front liner.
. Remove the trunk seal retainer. See SRO 76.19.44, Section
. Remove the trunk side liner.
. Disconnect the inclination sensor multiplug. (1 Fig. 1).
. Undo and remove the sensor mounting bracket securing
nuts
(2 Fig. 1). Remove the sensor (3 Fig. 1) complete with
mounting bracket (4 Fig. 1).
. Displace the mounting bracket retaining tang and remove
the sensor.
. Fitting a new inclination sensor is the reverse of the re- moval procedure.
13.
AS. 11
SRO 86.52.01
. Open
the trunk and remove the battery cover.
. Disconnect the battery ground lead.
. Remove the trunk floor carpet.
9 Remove the trunk front liner.
Remove the trunk seal retainer. See SRO 76.19.44, Section
. Remove the trunk side liner.
. Undo and remove the inclination sensor securing nuts (2 Fig. 1) and displace the sensor (3 Fig. 1) to gain access to
the SLCM (1 Fig. 2).
SECURIN & L OCKlNG CONTROL MODULE
(SLCM)
- RENEW
13.
. Undo and remove the SLCM securing nuts (5 Fig. 1).
. Displace the SLCM. Identify the SLCM multi-plugs (2 Fig. 2) for subsequent reconnection. Disconnect the mult- plugs and remove the SLCM.
9 Fitting a new SLCM is the reverse of the removal pro- cedure. Makesure thatthe multi-plugs are reconnected as
removed from the old SLCM.
The
arrowson Fig. 2 showthe position ofthe mount- ing bolts and mounting holes. U:
3
I 1 J86 1882
Fig. 1
Fig.
2
Issue 1 August 1994 40 X300 VSM