Lexus LS400 (2000 year). Manual - part 14

BE0CC–01

I03236

Ignition Switch

 Unlock Warning Switch

Engine Hood Courtesy Switch

Power Window Master Switch

 Door Lock Control Switch

Driver Door
ECU

Door Outside
Handle

Body ECU

Front Passenger Door ECU

Door Lock Control Switch

Luggage Compartment
Door Key Lock and 
Unlock Switch

Luggage Compartment Door
Opener Motor

Door Lock Assembly

 Door Lock Motor

 Door Unlock Detection Switch

BE–138

–

BODY ELECTRICAL

POWER DOOR LOCK CONTROL SYSTEM

2001

POWER DOOR LOCK CONTROL SYSTEM

LOCATION

I03422

5 4

10

3

9 8

2

7

6

1

11

13

14

12

BE0CD–01

I03438

I03439

2

4

–

BODY ELECTRICAL

POWER DOOR LOCK CONTROL SYSTEM

BE–139

2002

INSPECTION

1.

INSPECT POWER WINDOW MASTER SWITCH CON-
TINUITY
Master Switch: Driver’s Door Lock Manual Switch

Switch position

Tester connection

Specified condition

LOCK

6 – 11

Continuity

OFF

–

No continuity

UNLOCK

11 – 14

Continuity

If continuity is not as specified, replace the switch.
If continuity is as specified, inspect the switch circuit.
2.

INSPECT POWER WINDOW MASTER SWITCH CIR-
CUIT (See page 

BE–126

)

3.

INSPECT PASSENGER’S DOOR LOCK CONTROL
SWITCH CONTINUITY

Switch position

Tester connection

Specified condition

LOCK

2 – 3

Continuity

OFF

–

No continuity

UNLOCK

1 – 2

Continuity

If continuity is not as specified, replace the switch.
If continuity is as specified, inspect the switch circuit.
4.

INSPECT PASSENGER’S DOOR LOCK CONTROL
SWITCH CIRCUIT (See page 

DI–769

)

5.

INSPECT PASSENGER’S DOOR LOCK CONTROL IN-
DICATOR LIGHT OPERATION

Connect the positive (+) lead from the battery to terminal 4 and
the negative (–) lead to terminal 2, and check that the indicator
light does not light up, replace the switch.

I03434

LH Side

RH Side

OFF

Unlock

Lock

OFF

Unlock

Lock

1

2

3

I03433

Not turned

Unlock

BE–140

–

BODY ELECTRICAL

POWER DOOR LOCK CONTROL SYSTEM

2003

6.

INSPECT DOOR KEY LOCK AND UNLOCK SWITCH
CONTINUITY

Switch position

Tester connection

Specified condition

LOCK

1 – 2

Continuity

OFF

–

No continuity

UNLOCK

2 – 3

Continuity

If continuity is not as specified, replace the switch.
HINT:
Door key lock and unlock switch is built into the front door lock
assembly.
If continuity is as specified, inspect the switch circuit.

7.

Driver’s door:
INSPECT DOOR KEY LOCK AND UNLOCK SWITCH
CIRCUIT (See page 

DI–743

)

8.

Passenger ’s door:
INSPECT DOOR KEY LOCK AND UNLOCK SWITCH
CIRCUIT (See page 

DI–775

)

9.

INSPECT LUGGAGE COMPARTMENT DOOR KEY
LOCK AND UNLOCK SWITCH CONTINUITY

Switch position

Tester connection

Specified condition

Not turned

–

No continuity

UNLOCK

1 – 2

Continuity

If continuity is not as specified, replace the switch.
If continuity is as specified, inspect the switch circuit.

10.

INSPECT LUGGAGE COMPARTMENT DOOR KEY
LOCK AND UNLOCK SWITCH CIRCUIT 
(See page 

DI–711

)

Z14952

Push (OFF)

Push and
Turn (ON)

Pull (ON)

N07476

–

BODY ELECTRICAL

POWER DOOR LOCK CONTROL SYSTEM

BE–141

2004

11.

INSPECT LUGGAGE COMPARTMENT DOOR OPEN-
ER MAIN SWITCH CONTINUITY

Switch position

Tester connection

Specified condition

OFF (Push)

–

No continuity

ON (Push and turn)

1 – 2

Continuity

If continuity is not as specified, replace the switch.
If continuity is as specified, inspect the switch circuit.
12.

INSPECT LUGGAGE COMPARTMENT DOOR OPEN-
ER SWITCH CONTINUITY

Switch position

Tester connection

Specified condition

OFF

2 – B

Continuity

ON (Pull)

1 – L

2 – B

Continuity

If continuity is not as specified, replace the switch.
If continuity is as specified, inspect the switch circuit.

13.

INSPECT LUGGAGE COMPARTMENT DOOR OPEN-
ER MAIN SWITCH AND OPENER SWITCH CIRCUIT 
(See page 

DI–692

)

14.

INSPECT LUGGAGE COMPARTMENT DOOR OPEN-
ER MOTOR OPERATION

Connect positive (+) lead to the opener motor connector and
negative (–) lead to the body of the opener motor, and check
that the motor operates.