1994 JAGUAR XJ6 Electrical Diagnostic Manual

E I ect r ical W
1. Recline / incline motor
2. Lumbar pump
3. Headrest motor
4. Lumbarpad
5. Motor potentiometer
10
6. Motor (typical) detail
7. Rear height adjustment motor
8. Seat control module 9. Front height adjustment motor
10. Fore
/ aft motor
Fig. 1 Seat Component Locations
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E I ect r ical
15.4.2.5 Switch pack
The seat switch pack located on the side of the seat cushion houses the following switches:
Headrest; raise
/ lower
Seat cushion
-front; raise 1 lower
Seat cushion
- rear; raise 1 lower
Squab recline
/ incline
Seat assembly forward
/ backward
Lumbar pad firm
1 relax
Each switch has
a dual function and is capable of bi-directional action, so that any setting made can be reversed using
the same switch.
15.4.3 SEAT CONTROL MODULE
The Seat Control Module (SCM) is located inside the seat frame, below the cushions. The SCM controls the actions
of all position adjustment devices by monitoring switch and feedback potentiometer inputs. The SCM also provides
an interface to and from external devices with a bearing on seat operation. The module works in conjunction with the
ColumnIMirror Control Module (C/M CM) and the Securityand Locking Control Module (S/LCM) to provide positional adjustment memory functions as described previously.
There are four connectors to the SCM, designated
AI, A2, B1 and B2, which connect the various inputs 1 outputs and
peripheral devices to the module. Connections are as listed in subsection 15.4.3.1.
A1A2 B1B2
1 1 1
i 11
1 I
6
I
1' ~

1 7i 1 I 1 122
J86 1903 12 22 12 12 7 12
Fig. 1 SCM
Pin Location Diagram
X300 EDM 15.4 - 5 Issue 1 August 1994

Electrical
15.4.3.1
Connectors AI and A2form the seat internal harness interface. Connectors B1 and B2form thecabin/seat link harness
interface.
Seat Control Module Connector Pins
0
I CONNECTOR B1- 12 PIN. BLUE 1
Pin No. Description Input / Output Signal
1 JDS 'K Line I/O Serial data bus
2 JDS 'L' Line I/O Serial data bus
3 Earth I/P High current
4 Battery supply 1 I/P Supply +VE
X300 EDM Issue 1 August 1994 15.4 - 6

Electrical rl
CONNECTOR A2 - 22 PIN, WHITE
0 Pin No. I Description [ Input / Output I Signal
1 I Feedback +VE ref O/P I4.5v
2 Feedback -VE ref O/P ov
3 Headrest feedback I/P 140mV - 4.36V
4 Recline feedback I/P 140mV - 4.36V
5 Fore 1 aft feedback I/P 140mV - 4.36V
6 Cushion rear feedback I/P 140mV - 4.36V
7 Cushion front feedback I/P 140mV - 4.36V
8 Recline rearward switch I/P Switch to +12V
9 Fore / aft rearward switch I/P Switch to +12V
10 Fore 1 aft forward switch I/P Switch to +12V
1 11 Switch pack supply O/P +12v supply
- - r 12 Hardware link to 62/19
13
Auxiliary ground to lumbar O/P Switch to OV
14 Headrest lower switch I/P Switch to +12V ~
15 Headrest
raise switch I/P Switch to +12V
' 16 Cushion rear lower switch I/P Switch to +12V
0 17 Cushion rear raise switch I/P Switch to +12V
18 Cushion front lower switch I/P Switch to +12V
19 Cushion front raise switch I/P Switch to +12V
20 Recline forward switch I/P Switch to +12V
I 21 1 Input seat belt switch I I/P I Switch to OV I
I 22 I Hardware link to pin B2/1 I I- I -
0
18 Brake pedal pressed I/P Switch to OV
19
Hardwire link to A2112
20 O/P seat belt switch O/P Switch to OV
- -
21 Memory set I/P Switch to +12V
22 Dooropen I/P Switch to OV
X300 EDM 15.4 - 7 Issue 1 August 1994

rl Electrical
15.4.4 STEERING COLUMN /MIRROR
The steering column / mirror adjustment system comprises the following components:
0 Column tilt motor; up / down
0 Column reach motor; fore / aft
0 Column joystick switch; multi-directional
0 Driver’s mirror motors; horizontal and vertical movement
0 Passenger’s mirror motors; horizontal and vertical movement
0 Mirror joystick switches; driver and passenger - multi-directional
0 Column Mirror Control Module (C / M CM)
15.4.4.1 Column Motors
Thetwo column position adjustment motorsare mounted on the column as embly (one laterally d
one transversely)
allowing both vertical and reach distance adjustment. Each motor unit incorporates a potentiometer which provides
directional movement position control via feedback voltage variations to the
C / M CM. Positional variations are acti- vated by the C / M CM in response to signals from the joy-stickswitch mounted on the left-hand side of the column.
15.4.4.2
The column joy-stickswitch provides control of the column position in all directions. Adjustment of theswitch position
will result in a corresponding movement of the column. This switch also allows the selection of ‘Auto Mode’to enable
the Exit / Entry Mode facility.
Column Joy-stick Switch (Fig. 1 inset)
1. Tilt motor 2. Flexible coupling
3 lanition switch
1
J86-1904
Ifeach motor
Fig. 1 Steering Column Assembly 4
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15.4.4.3
The rearview mirror motors are located within the mirror assemblies, immediately behind the glass in a sealed assem- bly. An additional motor, mounted above the fixing bracket, or foot provides rotational mirror movement from fully
extended to folded flat to the car.
Elnfe:
Driver / Passenger Rear View Mirror Motors
Fold away movement motors are fitted to Japanese market vehicles only.
15.4.4.4 Mirror Joy-stick
The mirror joy-stick are located in the driver’s switch pack, providing inputs to the C/ M CM which operates the relevant
motor accordingly. A mirror select switch determines which mirror is adjusted when the joy-stick is operated.
2
5
1. Mirror movement motors 2.
3. Motor harness 4. Harness connector
5. Mirror glass 6. Mirror housing
7. Mounting foot
Fold away
motor (Japan only)
/ manual fold-back pivot
Fig. 1 Rear View Mirror Assembly
J86-1921
X300 EDM 15.4 - 9 Issue 1 August 1994

IT Electrical
15.4.5 COLUMN / MIRROR CONTROL MODULE
The Column / Mirror Control Module C/ M CM controls the operation of position adjustment motors by acting upon
inputs from the relevant switches. The module also forms an interface with signals from associated systems which
affect column /mirror movement. The
C/ M CM works in conjunction with SCM and SL CM to provide positional adjust- ment memory functions as previously described.
There are three connectors to the
C I M CM single multi-pin socket, designated block A, B and C, which connect the
various inputs / outputs and peripheral devices to the module. Connections are as listed below.
I BLOCK A [26-WAY GREY) 1
I .. I I 41 Input Switched to 12V ..
20 Memory set selected
Input Switched to 12V
21
Tilt restrict ident Input Switched to ground 1 open
22 Key in ignition barrel active
Input Switched to ground
circuit
23
1 Auxiliary ground on Input 1 Switched to ground
24 1 Reference voltage +ve feedback output I4.5v
25 1 Passenger mirror R/L Output 1 +ve 1 -ve
26
1 Mirror motor common Output I +ve / -ve
BLOCK B (lgWAY, GREY)
Pin No. I Description I In / out lsignal
1 Driver mirror L/R feedback Input 140mV - 4.36V
2 Passenger U/D feedback
Input 140mV - 4.36V
3 Driver mirror U/D feedback Input 140mV - 4.36V
4 Column tilt feedback Input 140mV - 4.36V
5 Column reach feedback
input 140mV - 4.36V
6 Reverse gear selected
Input Switched to ground
-

0
I I- - I 13 l-
BLOCK B (W-WAY, GREY) continued
' 7 Tiltawayonsignal Input Switched to ground
8 Gear selector not in park Input Switched to ground
9 Park brake ON signal Input
Switched to ground
10 Driver's door open signal Input Switched to ground
11 Remote call active Input
Switched to ground
12 Brake pedal ON signal Input
Switched to ground
I I 16 1- - -
Pin No.
1
2
3
4
Description I In/ out Signal
Power battery i Input 12v
Power ground Input ov
- - -
JDS
L I/O Serial Data
5 IJDSK I/O
13
I I
Serial Data
A B C J86 1902
I j 6
i7
'8
9
10
11
12
Fig. 1 Control Module Pin Location Diagram
I Lowcurrent battery ~ Input 12v
- - -
- - -
- - -
- - -
- - -
- - -
X300 EDM 15.4-11 Issue 1 August 1994