JAGUAR XJ6 1994 2.G Electrical Diagnostic Manual

rl E I ect r ical
6A. Heating (powered seats)
a. Examine harness wiring, checking continuity between SCM connector AI pins 9 and
10. A resistance value of 1.5-3.252 should be recorded indicating all heating
elements intact and thermostat closed.
Check continuity from BPU black 48
-way connector B, pin 38 to center console seat
heater switch module connector pin
5. Operate switch and check continuity from BPU
black 48
-way connector B pin 38 to ground.
Check continuity between cushion heater module and squab heater module pins;
resistance values of
1.0-2.052 and 0.51.252 respectively should be achieved.
Check continuity from SCM connector B2 pin
2, through console switch LED to ground;
a resistance value of 0 - 0.552 should be recorded.
b.
C.
d.
1
J86 - 1872
Fig. 1 Memory Seat Heaters
e
0
0
0

68. Heating (manual seats)
0 a. Examine harness wiring, checking fuse F9 in RH 'A' post base fuse box.
Ensure continuity between heater relay connector pin 85 and BPU yellow 48
-way
connector pin 23. Measure resistance from heater relay pin 87 and console switch
connector pin 10.
Check continuity from BPU black 48
-way connector B pin 38 to center console seat
heater switch module connector pin
4. Operate switch and check continuity from
BPU black 48
-way connector pin 38 to ground.
Check for
+12V supply at seat heater relay connector pins 30 and 86.
Check continuity between cushion heater module and squab module pins; resistance
values
of 1.0-2.052 and 0.5-1.252 respectively should be achieved. Ensure secure
ground connection from squab connector pin 3.
Check continuity from console switch connector pin
10 through console switch LED to
ground;
a resistance value of 0-0.5Q should be recorded.
b.
C.
d.
e.
I' T
I 19 15 16
17 OK
J86 - 1873
Fig. 1 Manual Seat Heaters
Issue 1 August 1994 X300 EDM 15.4 - 25

7. Seat switch pack
a. Examine harness wiring, checking continuity between SCM multi-pin connector A2
and switch pack connector pins as follows:
A2 Pin Function Pack pin
08
09
10
11
14
15
16
17
18
19
20
Squab recline
Seat reward
Seat forward
Common +ve
Headrest lower
Headrest raise
Seat rear lower
Seat rear raise
Seat front lower
Seat front raise
Squab incline
Ground 08
13
06
09
15
16
05
04 14
12
07
01
b. Disconnect harness from switch pack and check continuity of each pin to common +ve
(pin
9) when relevant switch is operated eg operation of seat forward switch will give
continuity between pin
9 and pin 6 of the pack.
Test the operation of the lumbar pump switches
(at pins, 03 and 11) by checking that
voltage on each pin toggles between ground and
+12V with each switch operation.
C.
1 1 1 1 1 P19 1 P16 1 P17 1 P20 1 PO8 1 PW 1 1 1 1 1 1 1 J
P11 P15 P14 Pl8
, P10
P02, I ]I 1 ‘I 14
J86 - 1869
Fig. 1 Seat Switch Pack
X300 EDM 15.4 - 26 Issue 1 August 1994

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Column movement motors 0 8.
a. Examine harness wiring, checking continuity between C / M CM multi-pin connector
and column motor unit connector pins as follows:
CIMCM Motor Function Unit Pin
Connector block
A
Pin 2
Pin 14
Pin 12
Pin 15
Tilt +ve
Tilt
-ve
Reach +ve
Reach
-ve
1
6
1
8
b. Test resistance between tilt motor unit pins 1 and 6; a value of approximately 2Q
should be recorded. Test resistance between reach motor unit pins 1 and 8; a value of
approximately
2Q should be recorded.
Check motor position potentiometers as described in step
9. C.
0
0
0 ~
w6
-
PLG
PS 8 PO5
A Ap’2F P15 ) BP
J86 - i 874
Fig. 1 Column Adjustment Motors
Issue 1 August 1994 15.4 - 27 X300 EDM

IT Electrical
9. Column movement motor position potentiometers
a. Examine wiring harness, checking continuity between C 1 M CM multi-pin connector
and motor unit connector pins as follows:
ClMCM Motor potentiometer Unit Pin
Connector block
B
Pin 4
Pin 5
Connector Mock A
Pin 24
Tilt motor feedback
Reach motor feedback
Tilt position +ve
Reach position +ve
3
4
2
3
Pin 16 Tilt position -ve 5
Check resistance across tilt motor position potentiometer pins 2 and 5, a value of 2.2m
should be indicated. Check resistance across reach motor position potentiometer pins
3 and 6, a value of IOW1 should be indicated.
Check resistance between tilt motor position potentiometer pin
3 and both pins 2
and 5. Values in the range of 100i2-2.1kQ should be recorded, dependent on motor
position. Check resistance between reach motor position potentiometer pin
4 and both
pins
3 and 6. Values of lOOi2-9.9kQ should be recorded, dependent on motor position.
Reach
position +ve
6
b.
c.
BR A P14 .>-,---
PS B PO5 .)
A P15 ) BP
J86 - 1874
Fin. 1 Column Adiustment Motor Potentiometers
e
0
e
0
Issue 1 August 1994 15.4 - 28 X300 EDM

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10. Column movement switches
0 a. Examine harness wiring, checking continuity between connector pins as follows:
CIMCM Switch Pack RH 'A' post base fuse box
- Pin 15 Fuse F2
Connector block A
Pin 5 Pin 14 -
Connector block B
Pin 7 Pin 17 -
Check resistance values between pins 14 and 15 when switch is operated, in all
planes. Values should be as follows; switch up - 220Q, switch down - IOOQ, switch
forward
470Q and 8208.
Check for continuity between switch pack pin 17 and ground when mode switch is in
'auto'.
b.
C.
2
1
'5i 11 v
L-
L-,,,,,,,,J
Fig. 1 Column Movement Switches
PO6 C
PO7 B
w5 A
22
J86 - 1875
Issue 1 August 1994 15.4 - 29 X300 EDM

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11. Mirror movement motors
a. Examine harness wiring, checking continuity between C / M CM multi-pin connector
and mirror connectors as follows:
C/MCM Function Unit Pin
Connector block
A
Pin 1
Pin 11
Pin 25
Pin 13
Pin 26 Passenger‘s
Mirror U / D 3
Driver’s Mirror U / D 3
Passenger’s Mirror
R / L 10
Driver‘s Mirror R / L 10
Common (both mirrors) 4
b. Test resistance between motor units pin 4 and both pins 3 and 10; a value of
approximately 2Q should be recorded.
Check motor position potentiometers as described in step 12.
C.
(BLOCK A) PO1
(BLOCKA) p24 (BLOCK €3) PO2
(BLOCK A) P25
(BLOCK A) PO4
(BLOCKA)
PI 1
(BLOCK B) PO3
(BLOCK A) P13
(BLOCK
6) PO1
(BLOCK A) P26
I II I I I I I I I
I
I
I
I
22
J86 - 1876
Fig. 1 Mirror Movement Motors
Issue 1 August 1994 15.4 - 30 X300 EDM

E I ect r ica I m
12. Mirror movement motor position potentiometers
a. Examine wiring harness, checking continuity between C / M CM multi-pin connector
and motor unit connector pins as follows:
ClMCM Motor potentiometer Unit Pin
Connector block
B
Pin 2
Pin 3
Pin
1
Connector block A
Pin 4 Passenger mirror horizontal feedback 5
d. Check resistance across each motor position potentiometer pins 2 and 6; a value of
3.7wl should be indicated.
Check resistance between each motor position potentiometer pin
8 and both pins 2
and 6. Values in the range of lOOQ - 3.6w1 should be recorded, dependent on motor
position.
C.
Passenger mirror vertical feedback
Driver mirror vertical feedback
Driver mirror horizontal feedback 8
8
5
(BLOCK A) PO1
(BLOCK A)
F74 (BLOCK B) PO2
(BLOCK A) P25
(BLOCK A)
PO4
[BLOCKA) PI1
(BLOCK B) PO3
(BLOCKA) PI3
(BLOCK B) W1
(BLOCK A) P26
22
J86 ~ 1876
Fig.
1 Mirror Movement Motor Position Potentiometers
X300 EDM 15.4 - 31 Issue 1 August 1994

13. Mirror movement switches
a. Examine harness wiring, checking continuity between C 1 M CM multi-pin connector
and drivers door switch pack connector as follows:
CJMCM Function Switch Pack
Connector block A
6
7
8
9
10
Passenger mirror U / D Pin 12
Driver mirror
U 1 D Pin 02
Passenger mirror R / L Pin 13
Driver mirror
R 1 L Pin 03
Common Pin 01
b. Check operation of switch as follows:
Select driver's mirror and operate joystick up and down, checking that voltage on
common
line toggles between ground and +12V and that voltage on driver's mirror
U I D line toggles in opposition ie when common = +12V, driver U / D = ground
and vice versa. Repeat test moving joystick left and right and monitoring common line
against driver
R / L line; the same results should be achieved. Select passenger mirror
and repeat both tests on passenger mirror lines.
3
'I'
II v
r-
'08 (BLOCK A)
'09 (BLOCK A) 'ob (BLOCK A)
'07 (BLOCK A)
'10 (BLOCK A)
22
J86 - 1877
Fig. 1 Mirror Movement Switches

Electrical rl
14. Memory facility
a. Examine harness wiring, checking continuity between SCM, C I M CM and drivers door
switch pack connectors as follows:
SCM Pin C / M CM Pin Switch Pack
82 Block A
4 19 Pin 15
5 18
Pin 16
6 17
Pin 04
8 - Pin 14
21 20
Pin 05
82 Block B
12 12 -
Check operation of switches by operating each switch in turn and checking voltage at
relevant pin toggles between ground and +12V on each switch change of state.
Check continuity on remote recall line from SCM pin connector
B2 pin 12 to C I M CM
connector B pin 11 and security / locking control module connector D pin 12.
Check continuity from BPU black 48-way connector pin 25 to SCM connector B2 pin 16
and BPU yellow 48-way connector pin 23 to SCM connector 82 pin 10.
b.
C.
d.
1
J86.1878
Fig. 1 Memory Facility
0 * Driver's side only (see fig. 1).
X300 EDM 15.4 - 33 Issue 1 August 1994