Discovery electrical Manual - part 70

 

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Discovery electrical Manual - part 70

 

 

POWER SEATS

M1

CIRCUIT OPERATION

1

CIRCUIT OPERATION

Driver Seat

When the Ignition Switch (X134) is in position I or II,
or the left front door is open, the Left Seat Power
Relay (K113) is energised. Battery voltage is then
applied to the Left Front Seat Control Switch (X152)
through the closed relay contacts and the Driver’s
Underseat Fuse Box (P108). Ground is applied to
the Left Front Seat Control Switch (X152) at all
times. The Left Front Seat Control Switch (X152)
controls 4 seat control motors via 8 switches. When
each switch is moved to operate its corresponding
motor, one seat switch applies ground while the
other applies battery voltage to the respective seat
motor. The motor turns to adjust the seat in the
requested direction.

Passenger Seat

Battery voltage is applied to the Right Front Seat
Control Switch (X121) at all times. When the Ignition
Switch (X134) is in position I or II, the Right Seat
Power Relay (K131) is energised, applying ground to
the Right Front Seat Control Switch (X121). The
Right Front Seat Control Switch (X121) controls 4
seat control motors via 8 switches. When each
switch is moved to operate its corresponding motor,
one seat switch applies ground while the other
applies battery voltage to the respective seat motor.
The motor turns to adjust the seat in the requested
direction.

POWER SEATS

M1

2

CIRCUIT DIAGRAM

REV: 11/97

86

0

[1]

30

MF 3

60 A

S306

See Power Dis-
tribution

X

F 6

20 A

1

C115

30

C348

86

85

30

87

NP

NP

1

C226

See Fuse Details

87

C348

85

WN

PU

S2013
HJ1

86

87

C358

85

87

30

30

C358

86

PU

S319

BP

S2095

LGW

B

B

S320

1

C2086

85

B

M1-4

A

M1-3

Theft Alarm Sys-
tem

P125
Engine Compart-
ment Fuse Box

BP

P126
Fascia Fuse Box

K113
Left Seat Power
Relay

Z222
Right Seat Power
Relay Diode

Z223
Left Seat Power
Relay Diode

HJ2

K131
Right Seat Power
Relay

X150
Left Front Door
Switch

[1]

Open

PG

E301

See Ground Dis-
tribution

B

Multi–Function
Unit (MFU)

POWER SEATS

M1

3

CIRCUIT DIAGRAM

WN





)%-!)* 

*!+ ,*! (/

 
 

WY





 
 

WR



 

!"+ )('+ !+

('+)(& .%+$

[1]

Forward

[2]

Backward

[3]

Front Down

[4]

Front Up

[5]

Recline

[6]

Raise

[7]

Rear Down

[8]

Rear Up



 

 

   

 



Y

G





WLG



!+ *! (+()



G

Y

WB



!+ !%#$+

)('+ (+()



G

Y

WU



!+ !&%'!

(+()



G

Y



WO



!+ !%#$+

!) (+()

WS

WK

WP















A

M1-2

WN

E301

See Ground Dis-
tribution

B

B

POWER SEATS

M1

4

CIRCUIT DIAGRAM

SN





''$ &' $,

&'( )' %+

 
 

WO



 
 

WU







Y

G





SB



( ' %(%&



G

Y

SW



( " !(

&%$( %(%&



G

Y

SU



( #"$

%(%&



G

Y



SR



( " !(

& %(%&

SG

SY

SP

















BP





B

M1-2



" !( &%$( (

%$(&%# *"(!

[1]

Forward

[2]

Backward

[3]

Front Down

[4]

Front Up

[5]

Recline

[6]

Raise

[7]

Rear Down

[8]

Rear Up

 

 

 

 

 

 

 

Content   ..  68  69  70  71   ..