Lexus ES300 (1997 year). Service manual - part 406

DI01S–01

N22047

N22048

I00635

Theft Deterrent Horn

Horn

Engine Hood Courtesy Switch

E/G Room J/B No.2

 DOME Fuse

 HORN Fuse

 ECU–IG Fuse

 CIG Fuse

 ST Relay

 HORN Relay

 Headlight Control 

   Relay

Theft Deterrent ECU

Ignition Switch and
Key Unlock Warning Switch

Instrument Panel J/B

 DOOR Fuse

 ST Fuse

 Taillight Control

    Relay

Horn

Luggage Compartment Door
Opener Main Switch

–

DIAGNOSTICS

THEFT DETERRENT SYSTEM

DI–401

553

1997 LEXUS ES300   (RM511U)

PARTS LOCATION

N22049

Door Lock Assembly

 Door Unlock Detection

   Switch

Door Key Lock and
Unlock Switch

Door Lock Assembly

 Door Unlock Detection

   Switch

Door Lock Assembly

 Door Unlock Detection

   Switch

Luggage Compartment
Door Key Lock and
Unlock Switch

Luggage Compartment
Door Courtesy Switch

Door Courtesy Switch

Door Courtesy
Switch

DI–402

–

DIAGNOSTICS

THEFT DETERRENT SYSTEM

554

1997 LEXUS ES300   (RM511U)

DI01T–01

I00302  I00303

I00304

Connector ”B”

Connector ”A”

T4

T3

–

DIAGNOSTICS

THEFT DETERRENT SYSTEM

DI–403

555

1997 LEXUS ES300   (RM511U)

TERMINALS OF ECM

Symbols (Terminals No.)

Wiring Color

Condition

STD Voltage (V)

DSWP 

↔

 E

R G

W B

Door courtesy switch ”ON”

(Passenger’s door opened)

Below 1 

Ω

DSWP 

↔

 E

(A1 

↔

 B4)

R–G 

↔

 W–B

Door courtesy switch ”OFF”

(Passenger’s door closed)

1 M

Ω

 or higher

DSWD 

↔

 E

R G

W B

Door courtesy switch ”ON”

(Driver’s door opened)

Below 1 

Ω

DSWD 

↔

 E

(A2 

↔

 B4)

R–G 

↔

 W–B

Door courtesy switch ”OFF”

(Driver’s door Closed)

1 M

Ω

 or higher

CTY 

↔

 E

R W

W B

Door courtesy switch ”ON”

(Rear door opened)

Below 1 

Ω

CTY 

↔

 E

(A3 

↔

 B4)

R–W 

↔

 W–B

Door courtesy switch ”OFF”

(Rear door closed)

1 M

Ω

 or higher

DSWH 

↔

 E

B

W B

Engine hood courtesy switch ”ON”

(Engine hood opened)

Below 1 

Ω

DSWH 

↔

 E

(A4 

↔

 B4)

B 

↔

 W–B

Engine hood courtesy switch ”OFF”

(Engine hood closed)

1 M

Ω

 or higher

DSWL 

↔

 E

R Y

W B

Luggage compartment door courtesy switch ”ON”

(Luggage compartment door opened)

Below 1 

Ω

DSWL 

↔

 E

 (A5 

↔

 B4)

R–Y 

↔

 W–B

Luggage compartment door courtesy switch ”OFF”

(Luggage compartment door closed)

1 M

Ω

 or higher

L2 

↔

 E 

L W

W B

Door key lock and unlock switch ”LOCK”

(Driver’s and passenger’s door)

Below 1 

Ω

L2 

↔

 E 

(A6 

↔

 B4)

L–W 

↔

 W–B

Door key lock and unlock switch ”UNLOCK”

(Driver’s and passenger’s door)

1 M

Ω

 or higher

UL3 

↔

 E 

R G

W B

Door key lock and unlock switch ”UNLOCK”

(Driver’s door)

Below 1 

Ω

UL3 

↔

 E 

(A7 

↔

 B4)

R–G 

↔

 W–B

Door key lock and unlock switch ”LOCK”

(Driver’s door)

1 M

Ω

 or higher

UL2 

↔

 E 

L

W B

Door key lock and unlock switch ”UNLOCK”

(passenger’s door)

Below 1 

Ω

UL2 

↔

 E 

(A8 

↔

 B4)

L 

↔

 W–B

Door key lock and unlock switch ”LOCK”

(passenger’s door)

1 M

Ω

 or higher

LUG 

↔

 E 

G W

W B

Luggage compartment door key lock and unlock switch ”ON”

Below 1 

Ω

LUG 

↔

 E 

(A9 

↔

 B4)

G–W 

↔

W–B

Luggage compartment door key lock and unlock switch ”OFF”

1 M

Ω

 or higher

IND 

↔

 E

(A10 

↔

 B4)

R–Y 

↔

W–B

Always

Below 1 V

+B1 

↔

 Body ground

(A11 

↔

Body ground)

R 

↔

W–B

Always

10 – 14 V

DI–404

–

DIAGNOSTICS

THEFT DETERRENT SYSTEM

556

1997 LEXUS ES300   (RM511U)

IG 

↔

 E

B R

W B

I

iti

it h i t

d t ”ON”

iti

10

14 V

IG 

↔

 E

(A12 

↔

 B4)

B–R 

↔

 W–B

Ignition switch is turned to ”ON” position

10 – 14 V

ACC 

↔

 E

P L

W B

I

iti

it h i t

d t ”ACC”

iti

10

14 V

ACC 

↔

 E

(A13 

↔

 B4)

P–L 

↔

 W–B

Ignition switch is turned to ”ACC” position

10 – 14 V

TSW 

↔

 E

L Y

W B

Luggage compartment door opener main switch ”ON”

( Luggage compartment door opened)

Below 1 

Ω

TSW 

↔

 E

(A14 

↔

 B4)

L–Y 

↔

 W–B

Luggage compartment door opener main switch ”OFF”

( Luggage compartment door closed)

1 M

Ω

 or higher

KSW 

↔

 E

L B

W B

Key unlock warning switch ”ON”

(Key inserted)

Below 1 

Ω

KSW 

↔

 E

(A15 

↔

 B4)

L–B 

↔

 W–B

Key unlock warning switch ”OFF”

(Key removed)

1 M

Ω

 or higher

LSWD 

↔

 E

L R

W B

Door unlock detection switch ”ON”

(Driver’s door)

Below 1 

Ω

LSWD 

↔

 E

(A16 

↔

 B4)

L–R 

↔

 W–B

Door unlock detection switch ”OFF”

(Driver’s door)

1 M

Ω

 or higher

LSWP 

↔

 E

Y

W B

Door unlock detection switch ”ON”

(Passenger’s door)

Below 1 

Ω

LSWP 

↔

 E

(A17 

↔

 B4)

Y 

↔

 W–B

Door unlock detection switch ”OFF”

(Passenger’s door)

1 M

Ω

 or higher

LSWR 

↔

 E

L Y

W B

Door unlock detection switch ”ON”

(Rear door)

Below 1 

Ω

LSWR 

↔

 E

(A18 

↔

 B4)

L–Y 

↔

 W–B

Door unlock detection switch ”OFF”

(Rear door)

1 M

Ω

 or higher

PANI 

↔

 E

LG

W B

It is receiving panic signal from remote keyless entry

Below 1 

Ω

PANI 

↔

 E

(A24 

↔

 B4)

LG 

↔

 W–B

Except above mention

1 M

Ω

 or higher

+B2 

↔

 Body ground

L–W 

↔

 Body

Al

10

14 V

+B2 

↔

 Body ground

(B1 

↔

 Body ground)

L W 

↔

 Body

ground

Always

10 – 14 V

TO 

↔

 E

L

W B

Al

10

14 V

TO 

↔

 E

(B2 

↔

 B4)

L 

↔

 W–B

Always

10 – 14 V

SH 

↔

 E

W L

W B

Al

10

14 V

SH 

↔

 E

(B3 

↔

 B4)

W–L 

↔

 W–B

Always

10 – 14 V

E 

↔

 Body ground

(B4 

↔

 Body ground)

W–B 

↔

 Body

ground

Always

10 – 14 V

HORN 

↔

 E

G B

W B

H

it h ”OFF”

10

14 V

HORN 

↔

 E

(B6 

↔

 B4)

G–B 

↔

 W–B

Horn switch ”OFF”

10 – 14 V

TAIL 

↔

 E

G R

W B

Li ht

t l

it h ”TAIL”

”HEAD”

10

14 V

TAIL 

↔

 E

(B7 

↔

 B4)

G–R 

↔

 W–B

Light control switch ”TAIL” or ”HEAD”

10 – 14 V

HEAD 

↔

 E

R B

W B

Li ht

t l

it h ”HEAD”

10

14 V

HEAD 

↔

 E

(B8 

↔

 B4)

R–B 

↔

 W–B

Light control switch ”HEAD”

10 – 14 V

SRLY 

↔

 E

(B9 

↔

 B4)

W–B 

↔

 W–B

Ignition switch ”ST” and PNP switch ON

(Shift to N or P position)

10 – 14 V