Range Rover 2. Electrical Manual — part 67
MEMORY SEATS
M4
13
CIRCUIT DIAGRAM
6
C562
UG
UP
C626
18
Z238
Body Electrical
Control Module
(BECM)
9
GN
8
P
0
1
1
R
0
0
1
N
1
0
1
D
1
0
0
3
0
0
0
2
0
1
0
1
1
1
0
Z*
1
1
1
X
Y
Z
0
1
2
C564
X157
Reverse Switch
S551
See Ground Dis-
tribution
B
E529
GN
C564
1
3
C660
C560
Manual Trans-
mission
Automatic
Transmission
UB
10
C659
S610
C559
Automatic Gear-
box
[1]
0
[2]
0
[3]
0
7
C660
C560
6
C562
3
2
1
S609
S608
UB
X
Y
Z
S607
See Ground Dis-
tribution
BG
E621
5
C560
C660
B
X294
Gear Box Posi-
tion Switch
[1]
X Switch
[2]
Y Switch
[3]
Z Switch
Automatic
Transmission
Manual Trans-
mission
E574
P
Petrol
Diesel
1 =
0 =
* =
Switch Open
Switch Closed
Fault
HEATED SEATS
M6
CIRCUIT OPERATION
1
CIRCUIT OPERATION
Driver and passenger seat heaters are PTC
regulated. Heated seat activation requests and
timing functions are generated by the Hevac ECU
while the Ignition Switch (X274) is in position II. The
BeCM (Z238) provides power switching only for this
function. In the case of both rear windows and the
sunroof being operated at the same time or an
uninitialised rear window or sunroof function being
operated, the seat heaters will be inhibited to
maintain current demand within a safe operating
area.
The signals are sent from the HEVAC ECU to the
BeCM (Z238) and are active low. Therefore the lines
are normally held at 12V.
HEATED SEATS
M6
2
CIRCUIT DIAGRAM
E908
E909
S901
With Power
Seats
See Ground Dis-
tribution
Without Power
Seats
B117
Left Heated Seat
2
C904
1
C904
B131
Right Heated
Seat
2
C906
1
C906
B117
Left Heated Seat
3
C903
1
C903
B131
Right Heated
Seat
3
C905
1
C905
NR
NG
B
NU
NB
B
2
1
C912
BP
15
Z253
Heating Ventila-
tion and Air
Conditioning
Control Unit
(HEVAC)
Z238
Body Electrical
Control Module
(BECM)
0
1
0
1
20
30
F 2
30 A
BR
6
C255
19
C246B
12
C246A
Without Air Condition-
ing
With Air Conditioning
11
MEMORY MIRRORS
M7
CIRCUIT OPERATION
1
CIRCUIT OPERATION
General
The following combinations of seat and mirror
adjustment method will be available:
11. Memory driver’s seat, memory passenger seat
and memory mirrors.
12. Memory driver’s seat, electric passenger’s seat
and memory mirrors.
13. Mechanically adjusted driver’s and passenger’s
seats, electric mirrors.
The memory mirror system will store the horizontal
and vertical position of each mirror. Storage and
recall functions will be controlled by the driver’s
memory seat control switches, each seat memory
position having a mirror memory position associated
with it.
Memory mirror enable and one touch enable will
occur under the same conditions as memory seat
enable and one touch enable .
Reverse dip position
Reverse mirror dipping will be enabled when the
presence of a driver’s side seat memory outstation is
detected.
If a driver’s seat memory store sequence is executed
whilst auxiliary is selected and the transmission is in
reverse, then the stored mirror position will be the
position that the mirrors will dip to when reverse gear
is next selected and that memory number is
currently recalled. To protect against accidental
setting, the mirror position will only be stored if it has
been altered since reverse was selected and a
message on the instrument pack will inform the
driver that the mirror position has been stored.
The function may be toggled on and off by holding
the memory store button for at least 2 seconds whilst
in reverse gear with auxiliary or ignition selected.
Successful toggling of the function will be
accompanied by the message “Mirror dip on”/“Mirror
dip off” as described in the message parameter
table.
Successful toggling of the function will result in the
mirrors moving immediately to the dipped/undipped
position as appropriate.
Storing a new reverse dip position will automatically
toggle the function on.
Vehicles fitted with automatic transmission will have
a 0.5 sec delay following the selection of reverse
gear prior to the mirror dip position being recalled.
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