Lexus SC300 / Lexus SC400. Manual — part 955

118

WIRELESS DOOR LOCK REMOTE CONTROL

7

6

10

5

4

2

9

3

1

2

1

2

1E

11

1D

8

4

1J

1

1B

5

1I

6

4

1H

13

1D

10

3E

7

3A

6

2

3

BY1

7

IP1

20

BX1

2

BX1

11

BX1

8

BX1

9

BX1

16

BX1

15

BX1

3

I 8

I15

I 7

B 4

B 7

9

10

6

3

6

3

BL

IF

IJ

IP1

15

E

KSW

DSWD

L1

LSWD1

UL1

LSWD2

LSWP

P–B

W–L

G–W

G–Y

L–W

W–B

W–B

W–B

W–B

W–B

G–L

R–L

R

R

R

R–

L

P–

B

W–

L

L–W

G–

W

G–

Y

G–

W

L–

W

G–

Y

G–

Y

G–

W

G–

L

R–

W

Y

G–

L

Y

W–

B

G–

L

R–

W

R–

W

W–

B

W–

B

W–

B

W–

B

W–

B

W–

B

FROM POWER SOURCE SYSTEM (SEE PAGE 56)

10A
DOME

+B

WIRELESS DOOR LOCK ECU

WIRELESS DOOR LOCK
MAIN SW

U

N

L

O

CK

W

A

RN

IN

G

S

W

[I

G

N

IT

IO

N

S

W

]

D

OOR

OP

E

N

DE

T

E

CT

IO

N

S

W

L

H

D

OOR

OP

E

N

DE

T

E

CT

IO

N

S

W

R

H

INTEGRATION
RELAY

DIODE

T

O

D

OOR

L

OC

K

AN

D

U

N

L

O

C

K

SW

L

H

T

O

D

OOR

L

OC

K

AN

D

U

N

L

O

C

K

SW

R

H

W 8

I1

5

D1

0

D1

1

W 7

2

1

4

6

IF2

15

IP1

19

G–

Y

G–

W

I15

G–

Y

T

O

D

OOR

L

OC

K

AN

D

U

N

L

O

C

K

SW

R

H

IP1

8

G–

Y

G–Y

119

1K

7

15

14

11

7

3

4

16

8

2

1

4

4

IP1

7

IF2

7

I 2

I 8

I11

I11

IF

IF2

16

IF2

18

IP1

6

IP1

18

4

1

M

5

2

4

1

M

5

2

UL1

L1

LSWD

LSWP

ACT–

ACT+

E

P–B

L–W

P–B

W–L

G–W

G–Y

L–W

W–B

W–B

L–R

L–R

L–W

G–

W

G–

Y

W–

L

P–

B

L–W

L–

R

W–

B

L–W

L–W

L–W

P–

B

L–W

W–

B

L–

R

L–

R

W–

L

L–

R

W–

B

FROM POWER SOURCE SYSTEM (SEE PAGE 56)

30A
DOOR

+B2

THEFT DETERRENT AND DOOR LOCK ECU

L–W

L–W

P–

B

L–W

D

OOR

L

OC

K

M

OT

OR

,

D

O

O

R

UN

L

O

CK

D

E

T

E

CT

IO

N

S

W

A

N

D

D

OOR

OP

E

N

D

E

T

E

C

T

ION

S

W

L

H

D

OOR

L

OC

K

M

OT

OR

,

D

O

O

R

UN

L

O

CK

D

E

T

E

CT

IO

N

S

W

A

N

D

D

OOR

OP

E

N

D

E

T

E

C

T

ION

S

W

R

H

DIODE

D1

0

D1

1

T 9

6

5

I15

120

WIRELESS DOOR LOCK REMOTE CONTROL

DOOR LOCK CONTROL (LOCK AND UNLOCK) IS PERFORMED BY REMOTE CONTROL, WITHOUT THE IGNITION KEY INSERTED IN
THE DOOR KEY CYLINDER, USING LOW–POWER RADIO WAVES EMITTED BY A TRANSMITTER BUILT INTO IGNITION KEY.

1. WIRELESS DOOR LOCK OR UNLOCK NORMAL OPERATION

WITH THE WIRELESS DOOR LOCK MAIN SW ON, THE IGNITION KEY NOT INSERTED INTO THE IGNITION KEY CYLINDER (UNLOCK
WARNING SW OFF) AND ALL THE DOORS COMPLETELY CLOSED, WHEN THE SWITCH (TRANSMITTER) ON THE IGNITION KEY IS
PUSHED, THE WIRELESS DOOR LOCK ECU RECEIVES THE ELECTRICAL WAVES FROM THE IGNITION KEY (TRANSMITTER),
CAUSING IT TO OPERATE.

AS A RESULT, THE ECU JUDGES WHETHER THE DOOR IS LOCKED OR UNLOCKED BASED ON THE SIGNAL FROM THE DOOR LOCK
MOTOR, AND SENDS A SIGNAL TO THE DOOR LOCK ECU TO SWITCH THE CONDITION FROM LOCK TO UNLOCK OR VICE VERSA,
CAUSING THE DOOR LOCK MOTOR TO OPERATE (FOR THE CURRENT FLOW DURING LOCK AND UNLOCK REFER TO THE DOOR
LOCK CONTROL SYSTEM.)

2. AUTO LOCK OPERATION

AFTER PUSHING THE IGNITION KEY SWITCH (TRANSMITTER) TO UNLOCK ALL THE DOORS, IF A DOOR IS NOT OPENED WITHIN 30
SECONDS, ALL OF THE DOORS ARE AUTOMATICALLY LOCKED AGAIN.

3. WIRELESS DOOR LOCK STOP FUNCTION

IF A DOOR IS OPEN (DOOR COURTESY SW ON), A SIGNAL IS INPUT FROM THE DOOR OPEN COURTESY SW TO THE WIRELESS
DOOR LOCK ECU, STOPPING WIRELESS DOOR LOCK OR UNLOCK.

IF THE IGNITION KEY IS IN THE IGNITION KEY CYLINDER (UNLOCK WARNING SW ON), THE UNLOCK WARNING SWITCH INPUT A
SIGNAL TO THE WIRELESS DOOR LOCK ECU, STOPPING WIRELESS DOOR LOCK OR UNLOCK.

4. DOOR LOCK MOTOR PROTECTIVE FUNCTION

IF THE DOOR LOCK OR UNLOCK CONDITION DOES NOT CHANGE AFTER WIRELESS DOOR LOCK OR UNLOCK OPERATION, THE
DOOR LOCK ECU SENDS CURRENT TEN TIMES TO THE DOOR LOCK MOTOR. IF THE DOOR LOCK CONDITION STILL HAS NOT
CHANGED AS A RESULT THE WIRELESS DOOR LOCK ECU STOPS RECEPTION AND STOPS DOOR LOCK AND UNLOCK FUNCTION.

BY MANUALLY OPERATION THE DOOR LOCK OR UNLOCK, THE STOP CONDITION OF THE WIRELESS DOOR LOCK FUNCTION IS
RELEASED.

D10, D11

DOOR OPEN DETECTION SW LH, RH

3–6 : CLOSED WITH DOOR OPENED

I15

UNLOCK WARNING SW [IGNITION SW]

10–9 : CLOSED WITH IGNITION KEY IN CYLINDER

W 8

WIRELESS DOOR LOCK ECU

1–GROUND: APPROX. 12 VOLTS WITH WIRELESS DOOR LOCK MAIN SW ON
7–GROUND: ALWAYS CONTINUITY

10–GROUND: CONTINUITY WITH EACH DOOR OPENED

6–GROUND: CONTINUITY WITH IGNITION KEY IN CYLINDER

: PARTS LOCATION

CODE

SEE PAGE

CODE

SEE PAGE

CODE

SEE PAGE

D10

30

I15

29

W 7

29

D11

30

T 9

29

W 8

31

: RELAY BLOCKS

CODE

SEE PAGE

RELAY BLOCKS (RELAY BLOCK LOCATION)

2

19

ENGINE COMPARTMENT LEFT

4

23

LEFT KICK PANEL (J/B NO.1 LEFT)

: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR

CODE

SEE PAGE

JUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)

1B

20

ENGINE ROOM MAIN WIRE

1D

20

FRONT DOOR LH WIRE

1E

20

INSTRUMENT PANEL WIRE

1H

1I

20

COWL WIRE

1J

20

COWL WIRE

1K

3A

22

INSTRUMENT PANEL WIRE

3E

22

INSTRUMENT PANEL WIRE

SYSTEM OUTLINE

SERVICE HINTS

121

: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS

CODE

SEE PAGE

JOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)

IF2

36

FRONT DOOR LH WIRE AND COWL WIRE (LEFT KICK PANEL)

IP1

38

FRONT DOOR RH WIRE AND COWL WIRE (RIGHT KICK PANEL)

BX1

40

FLOOR NO. 3 WIRE AND COWL WIRE (RIGHT KICK PANEL)

BY1

40

INSTRUMENT PANEL WIRE AND FLOOR NO. 3 WIRE (RIGHT KICK PANEL)

: GROUND POINTS

CODE

SEE PAGE

GROUND POINTS LOCATION

IF

36

LEFT KICK PANEL

IJ

36

RIGHT KICK PANEL

BL

40

UNDER THE CENTER PILLAR RH

: SPLICE POINTS

CODE

SEE PAGE

WIRE HARNESS WITH SPLICE POINTS

CODE

SEE PAGE

WIRE HARNESS WITH SPLICE POINTS

I 2

B 4

40

FRONT DOOR LH WIRE

I 7

B 5

40

FRONT DOOR LH WIRE

I 8

38

COWL WIRE

B 6

40

FRONT DOOR RH WIRE

I11

COWL WIRE

B 7

40

FRONT DOOR RH WIRE

I15