Lexus ES300 (1997 year). Manual — part 638

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146

DOOR LOCK CONTROL

CURRENT ALWAYS FLOWS TO TERMINAL 1 OF THE INTEGRATION RELAY THROUGH THE DOOR FUSE.
WHEN THE IGNITION SW IS TURNED ON, THE CURRENT FLOWING THROUGH THE GAUGE FUSE FLOWS TO TERMINAL 7 OF THE
INTEGRATION RELAY

→

TERMINAL 3

→

THE POWER RELAY (COIL SIDE)

→

GROUND. AS A RESULT, THE CURRENT FLOWING

THROUGH THE PWR FUSE FLOWS TO THE POWER RELAY (POINT SIDE)

→

TERMINAL 7 OF THE DOOR LOCK CONTROL SW LH

→

TERMINAL 1

→

GROUND, CAUSING THE INDICATOR LIGHT TO LIGHT UP.

1. MANUAL LOCK OPERATION

WHEN THE LOCK CONTROL SW OR DOOR KEY LOCK AND UNLOCK SW ARE PUSHED TO LOCK POSITION, A LOCK SIGNAL IS
INPUT TO TERMINAL 16 OR 18 OF THE INTEGRATION RELAY AND CAUSES THE RELAY TO FUNCTION. CURRENT FLOWS
FROM TERMINAL 1 OF THE RELAY

→

TERMINAL 12

→

TERMINAL 2 OF THE DOOR LOCK MOTORS

→

TERMINAL 3 OF THE

DOOR LOCK MOTORS

→

TERMINAL 25 OF THE RELAY

→

TERMINAL 10

→

GROUND AND THE DOOR LOCK MOTOR CAUSES

THE DOOR TO LOCK.

2. MANUAL UNLOCK OPERATION

WHEN THE DOOR LOCK CONTROL SW OR DOOR KEY LOCK AND UNLOCK SW ARE PUSHED TO UNLOCK POSITION, AN UNLOCK
SIGNAL IS INPUT TO TERMINAL 17 OR 19 OR 20 OF THE INTEGRATION RELAY AND CAUSES THE RELAY TO FUNCTION.
CURRENT FLOWS FROM TERMINAL 1 OF THE RELAY

→

TERMINAL 25

→

TERMINAL 3 OF THE DOOR LOCK MOTORS

→

TERMINAL 2 OF THE DOOR LOCK MOTORS

→

TERMINAL 12 OF THE RELAY

→

TERMINAL 10

→

GROUND AND THE DOOR LOCK

MOTOR CAUSES THE DOOR TO LOCK.

3. DOUBLE OPERATION UNLOCK OPERATION

WHEN THE DOOR KEY LOCK AND UNLOCK SW LH IS TURNED TO THE UNLOCK SIDE, ONLY THE DRIVER’S DOOR IS
MECHANICALLY UNLOCKED. TURNING THE DOOR KEY LOCK AND UNLOCK SW LH TO THE UNLOCK SIDE CAUSES A SIGNAL TO BE
INPUT TO TERMINAL 19 OF THE RELAY, AND IF THE SIGNAL IS INPUT AGAIN WITHIN 3 SECONDS BY TURNING THE SW TO THE
UNLOCK SIDE AGAIN, CURRENT FLOWS FROM TERMINAL 25 OF THE INTEGRATION RELAY

→

TERMINAL 3 OF THE DOOR LOCK

MOTORS

→

TERMINAL 2 OF THE DOOR LOCK MOTORS

→

TERMINAL 12 OF THE RELAY

→

TERMINAL 10

→

GROUND, CAUSING

THE DOOR LOCK MOTORS TO OPERATE AND UNLOCK THE DOORS.

4. IGNITION KEY REMINDER OPERATION

*OPERATING DOOR LOCK KNOB (OPERATION OF DOOR LOCK MOTORS)

WITH IGNITION KEY IN CYLINDER (UNLOCK WARNING SW ON), WHEN THE DOOR IS OPENED AND LOCKED USING DOOR LOCK
KNOB (DOOR LOCK MOTOR), THE DOOR IS LOCKED ONCE BUT EACH DOOR IS UNLOCKED SOON BY THE FUNCTION OF
RELAY. AS A RESULT, THE CURRENT FLOWS FROM TERMINAL 1 OF THE INTEGRATION RELAY

→

TERMINAL 25

→

TERMINAL 3 OF THE DOOR LOCK MOTORS

→

TERMINAL 2 OF THE DOOR LOCK MOTOR

→

TERMINAL 12 OF THE RELAY

→

TERMINAL 10

→

GROUND AND CAUSES ALL THE DOORS TO UNLOCK.

* OPERATING THE DOOR LOCK CONTROL SW OR DOOR KEY LOCK AND UNLOCK SW

WITH IGNITION KEY IN CYLINDER (UNLOCK WARNING SW ON), WHEN THE DOOR IS OPENED AND LOCKED USING DOOR LOCK
CONTROL SW OR KEY SW, THE DOOR IS LOCKED ONCE BUT EACH DOOR IS UNLOCKED BY THE FUNCTION OF SW
CONTAINED IN MOTORS, WHICH THE SIGNAL IS INPUT TO TERMINAL 5 (FRONT LH) OR 7 (FRONT RH) OR 9 (REAR LH,
RH) OF THE RELAY. ACCORDING TO THIS INPUT SIGNAL, THE CURRENT IN ECU FLOWS FROM TERMINAL 1 OF THE RELAY

→

TERMINAL 25

→

TERMINAL 3 OF THE DOOR LOCK MOTORS

→

TERMINAL 2 OF THE DOOR LOCK MOTORS

→

TERMINAL

12 OF THE RELAY

→

TERMINAL 10

→

GROUND AND CAUSES ALL THE DOORS TO UNLOCK.

* IN CASE OF KEYLESS LOCK

WITH IGNITION KEY IN CYLINDER (UNLOCK WARNING SW ON), WHEN THE UNLOCK FUNCTION IS DISTURBED MORE THAN 0.2
SECONDS, FOR EXAMPLE PUSHING THE DOOR LOCK KNOB ETC., THE DOOR HOLDS ON LOCK CONDITION. CLOSING THE
DOOR AFTER, DOOR COURTESY SW INPUTS THE SIGNAL INTO TERMINAL 4 OR 6 OR 6 OF THE INTEGRATION RELAY. BY
THIS INPUT SIGNAL, THE ECU WORKS AND CURRENT FLOWS FROM TERMINAL 1 OF THE RELAY

→

TERMINAL 25

→

TERMINAL 3 OF THE DOOR LOCK MOTORS

→

TERMINAL 2 OF THE DOOR LOCK MOTORS

→

TERMINAL 12 OF THE RELAY

→

TERMINAL 10

→

GROUND AND CAUSES ALL THE DOORS TO UNLOCK.

SYSTEM OUTLINE

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147

I14

INTEGRATION RELAY

10–GROUND : ALWAYS CONTINUITY

6–GROUND : CONTINUITY WITH DRIVER’S DOOR OPEN
1–GROUND : ALWAYS APPROX. 12 VOLTS

25–GROUND : APPROX. 12 VOLTS 0.2 SECONDS WITH FOLLOWING OPERATION

* DOOR LOCK CONTROL SW UNLOCKED
* DOOR LOCK CONTROL SW LOCKED WITH IGNITION KEY IN CYLINDER AND DRIVER’S DOOR OPEN
(IGNITION KEY REMINDER FUNCTION)
* DOOR LOCK KNOB LOCKED WITH IGNITION KEY IN CYLINDER AND DRIVER’S DOOR OPEN
(IGNITION KEY REMINDER FUNCTION)
* UNLOCKING THE DRIVER’S, PASSENGER’S DOOR CYLINDER WITH KEY

12–GROUND : APPROX. 12 VOLTS 0.2 SECONDS WITH FOLLOWING OPERATION

* DOOR LOCK CONTROL SW LOCKED

* LOCKING THE DRIVER’S, PASSENGER’S DOOR CYLINDER WITH KEY

16–GROUND : 0 VOLTS WITH DOOR LOCK CONTROL SW LOCKED

6–GROUND : CONTINUITY WITH FRONT PASSENGER’S DOOR OPEN
5–GROUND : CONTINUITY WITH DRIVER’S DOOR LOCK KNOB UNLOCKED
7–GROUND : CONTINUITY WITH FRONT PASSENGER’S DOOR LOCK KNOB UNLOCKED

17–GROUND : 0 VOLTS WITH DOOR LOCK CONTROL SW UNLOCKED
20–GROUND : 0 VOLTS WITH PASSENGER’S DOOR LOCK CYLINDER UNLOCKED WITH KEY

7–GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION

19–GROUND : 0 VOLTS WITH DRIVER’S DOOR LOCK CYLINDER UNLOCKED WITH KEY
18–GROUND : 0 VOLTS WITH DRIVER’S, PASSENGER’S DOOR LOCK CYLINDER LOCKED WITH KEY

9–GROUND : CONTINUITY WITH REAR PASSENGER’S DOOR LOCK KNOB UNLOCKED
4–GROUND : CONTINUITY WITH REAR PASSENGER’S DOOR OPEN

D 9, D10, D11, D12

DOOR COURTESY SW FRONT LH, RH, REAR LH, RH

1–GROUND : CLOSED WITH EACH DOOR OPEN

D13

DOOR KEY LOCK AND UNLOCK SW FRONT LH

2–1 : CLOSED WITH DOOR LOCK CYLINDER LOCKED WITH KEY
3–1 : CLOSED WITH DOOR LOCK CYLINDER UNLOCKED WITH KEY

D14

DOOR KEY LOCK AND UNLOCK SW FRONT RH

2–1 : CLOSED WITH DOOR LOCK CYLINDER LOCKED WITH KEY
3–1 : CLOSED WITH DOOR LOCK CYLINDER UNLOCKED WITH KEY

D16, D17, D18,D19

DOOR LOCK MOTOR AND DOOR UNLOCK DETECTION SW FRONT LH, RH, REAR LH, RH

1–4 : CLOSED WITH UNLOCK POSITION

U 1

UNLOCK WARNING SW (IGNITION KEY)

1–2 : CLOSED WITH IGNITION KEY IN CYLINDER

SERVICE HINTS

1

2

1

1

1

1

1

2

3

1

2

3

D 6

BLAC K

D 9

D1 0

D 1 1

D 12

D1 3

D 1 4

148

DOOR LOCK CONTROL

: PARTS LOCATION

CODE

SEE PAGE

CODE

See Page

Code

See Page

D 6

28

D18

30

J15

29

D 9

30

D19

30

J33

29

D10

30

I14

A

28

J34

A

29

D11

30

J 5

A

29

J35

B

29

D12

30

J 6

B

29

J36

30

D13

30

J 7

29

J37

30

D14

30

J10

A

29

J38

30

D15

30

J11

B

29

P 9

31

D16

30

J12

A

29

U 1

29

D17

30

J13

B

29

,,,

,,,

,,,

: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR

Code

See Page

Junction Block and Wire Harness (Connector Location)

1D

24

INSTRUMENT PANEL WIRE AND INSTRUMENT PANEL J/B (LOWER FINISH PANEL)

1G

24

INSTRUMENT PANEL WIRE AND INSTRUMENT PANEL J/B (LOWER FINISH PANEL)

1J

24

COWL WIRE AND INSTRUMENT PANEL J/B (LOWER FINISH PANEL)

1H

24

COWL WIRE AND INSTRUMENT PANEL J/B (LOWER FINISH PANEL)

1S

24

FLOOR WIRE AND INSTRUMENT PANEL J/B (LOWER FINISH PANEL)

1V

24

COWL WIRE AND INSTRUMENT PANEL J/B (LOWER FINISH PANEL)

: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS

CODE

SEE PAGE

JOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)

IE1

36

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

IE2

36

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

IF3

36

FLOOR WIRE AND INSTRUMENT PANEL WIRE (LEFT KICK PANEL)

IO1

38

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

IO2

38

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

IP1

38

FLOOR NO. 2 WIRE AND INSTRUMENT PANEL WIRE (RIGHT KICK PANEL)

BQ1

40

REAR DOOR LH WIRE AND FLOOR WIRE (LEFT CENTER PILLAR)

BR1

40

REAR DOOR RH WIRE AND FLOOR NO. 2 WIRE (RIGHT CENTER PILLAR)

: GROUND POINTS

Code

See Page

GROUND POINTS LOCATION

IF

36

COWL SIDE PANEL LH

II

36

INSTRUMENT PANEL BRACE LH

IL

36

RIGHT KICK PANEL

IN

36

RIGHT KICK PANEL

BN

40

UNDER THE LEFT CENTER PILLAR

BO

40

UNDER THE RIGHT CENTER PILLAR

: SPLICE POINTS

Code

See Page

Wire Harness with Splice Points

Code

See Page

Wire Harness with Splice Points

B 6

40

FLOOR NO. 2 WIRE

149

1 2 3

X

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

19 20

1

X 3 X

6

7 X 9 X 11

25

X

X

X

X

17

X

X

X

12

18

5

16

B B B B

D D D E E E F F F F

(HINT : SEE PAGE 7)

A A

X X

(HINT : SEE PAGE 7)

X X

C C

(HINT : SEE PAGE 7)

B B B C C C

(HINT : SEE PAGE 7)

B B B C C C

(HINT : SEE PAGE 7)

A

A

A

A

A

A

(HINT : SEE PAGE 7)

A A B

C C

A A B B

C C

(HINT : SEE PAGE 7)

A A

D D D E E E

(HINT : SEE PAGE 7)

C C

D D D

(HINT : SEE PAGE 7)

(HINT : SEE PAGE 7)

A

A

A

A

A

A

(HINT : SEE PAGE 7)

(HINT : SEE PAGE 7)

4

3

X

1

X

D15

D16 BLACK

D17 BLACK

D18 BLACK

D19 BLACK

J 7

J15

J33

J36

J37

J38

P 9

A ORANGE

I14

A

J10

B GRAY

J13

A GRAY

J12

B

J11

A BLACK

J34

B BLACK

J35

C C C

(HINT : SEE PAGE 7)

B B B

(HINT : SEE PAGE 7)

1

2

U 1

7

B B

B

B B B B

B GRAY

J 6

A GRAY

J 5

4

B

B B B B