1994 JAGUAR XJ6 Electrical Diagnostic Manual

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
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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
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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
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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

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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

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15. Exit / Entry facility
a.
b.
Examine harness wiring, checking continuity between C/ M CM block B connector
pin
7 and column mode switch pack connector pin 17.
Operate switch and check continuity between C / M CM connector block B pin 7 and
ground with switch in 'auto' mode.
J86 - 1875
Fig. 1 Exit 1 Entry Facility

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15.4.9.16 Key to schematic diagrams
I 2
I 3
i 7
, I 13
14
a1 15
j
20
p
23
30
Description
Seat control modules (driver and passenger side)
RH ,'A' post base fuse-box
LH
,'A' post base fuse-box
Head restraint motor and potentiometer
Squab recline motor and potentiometer
Seat movement motor
- fore 1 aft - and potentiometer
Seat movement motor
- rear raise 1 lower - and potentiometer
Seat movement motor
- front raise 1 lower - and potentiometer
Seat raise lower motor (manual seats)
Seat switch pack
Seat raise relay (manual seats)
Seat lower relay (manual seats)
Seat raise
/ lower selector switch (manual seats)
Lumbar pump unit
14.1 Pump
14.2 Solenoid valve
14.3 Pressure switch
Seat cushion heater
15.1 Thermostat
15.2 Inner cushion element
15.3 Outer cushion element
Squab cushion heater
Center console switch unit
17.1 Switch LED
17.2 Heatina select switch
Body processor unit
Heater relay (manual seat)
Column
tilt motor and potentiometer
Column reach motor and potentiometer
Column
I mirror control module
Column switches
23.1 Joystick
23.2 Passenger's rear view mirror up
I down motor and potentiometer
Passenger's rear view mirror left
I right motor and potentiometer
Mode switch (exit
I entry)
Driver's rear view mirror up
I down motor and potentiometer
Driver's rear view mirror left
1 right motor and potentiometer
Driver's door switch pack
Mirror polarity select switch
Mirror joystick
X300 EDM 15.4 - 35 Issue 1 August 1994