Lexus LS400 (2000 year). Service manual — part 17

N13462

4

9

BE0CG–01

BE1239

I03433

Not turned

Unlock

BE–150

–

BODY ELECTRICAL

THEFT DETERRENT SYSTEM

2013

INSPECTION

1.

INSPECT RHEOSTAT LIGHT CONTROL VOLUME OP-
ERATION

Connect the positive (+) lead from the battery to terminal 4 and
negative (–) lead to terminal 9, and check that the warning light
lights up.
If operation is not as specified, replace the rheostat light control
volume.
2.

INSPECT RHEOSTAT LIGHT CONTROL VOLUME CIR-
CUIT (See page

BE–62

)

3.

INSPECT HORN OPERATION

Connect positive (+) lead to terminal 1 and negative (–) lead to
terminal 2 of theft deterrent horn connector, and that the theft
deterrent horn blows.
If operation is not as specified, replace the horn.
4.

INSPECT HORN CIRCUIT (See page

DI–717

)

5.

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.
6.

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

DI–711

)

I04893

ON

OFF

–

BODY ELECTRICAL

THEFT DETERRENT SYSTEM

BE–151

2014

7.

ENGINE HOOD COURTESY SWITCH CONTINUITY

Switch position

Tester connection

Specified condition

LOCK

–

No continuity

UNLOCK

1 – 2

Continuity

If continuity is not as specified, replace the switch.
If continuity is as specified, inspect the switch circuit.
8.

ENGINE HOOD COURTESY SWITCH CIRCUIT
(See page

DI–707

)

BE0CH–01

I03443

Engine Room Junction Block

ECU–B Fuse

Transmitter

Wireless Door Lock ECU

Wireless Door Lock
Buzzer

Door Outside
Handle

Body ECU

Ignition Switch

Key Unlock Warning Switch

Wireless Door Lock
Buzzer Cancel Switch

BE–152

–

2015

WIRELESS DOOR LOCK CONTROL SYSTEM

LOCATION

BE0CI–01

–

BODY ELECTRICAL

WIRELESS DOOR LOCK CONTROL SYSTEM

BE–153

2016

PRE–CHECK

Make the vehicle in the initialized condition:
The initialized condition is the condition when the following conditions are satisfied.
(1) Key plate has not been inserted in the ignition key cylinder.
(2) All the doors are closed. (Door warning light is off.)
(3) All the doors are locked.
(4) Wireless door lock control switch (Buzzer switch) is ON.

Under the standard operation, when repeating the operation of UNLOCK and LOCK switch 3 times or more alter-
nately, check the UNLOCK–LOCK operation from 3rd time onward.

Following procedures are standard operation.

(1) Keep about 1 M away to the right direction from the outside handle of a driver’s seat.
(2) Face the transmitter toward the vehicle and press one of transmitter switches for about 1 sec.
<Reference>

As of the security function, even the wireless function is normal, there may be the case that only UNLOCK opera-

tion will not work.

As of the UNLOCK operation times adjustment function of body customize function, when using LEXUS hand–

held tester to set ”operation twice”, only driver’s seat is unlocked by unlock operation performed once.

Normal
<Reference>

Operative distance may differ according to

an operator, the way of holding the transmitter
or position.

Because weak electric wave is used, when

there is strong wave or noise in the used
frequency ,operation distance might be
shortened.

No

Yes

Only wireless function (Remote control) will not operate.
(If a new transmitter or a transmitter of the same type that works properly with the vehicle is not available.)

Check when pressing UNLOCK switch
and LOCK switch under standard
operation, that the transmitter LED
lights up one more once.

No

Yes

Basic function check:

Transmitter LED inspection:

1