Lexus GS300/400 (2000 year). Manual — part 46

N09348

ECU

LEXUS hand–held tester

LEXUS Break–out–box

–

BODY ELECTRICAL

THEFT DETERRENT SYSTEM

BE–147

2448

(b)

Transfer to active mode:
In each passive mode, when ”disarming condition of ac-
tive mode

→

arming preparation transfer condition” is

met, the active mode transfers to each condition. In this
case, active mode continues till disarming condition.

Passive mode when transfer condition is

met.

Active mode transfer condition

Disarming condition

Arming preparation condition

Arming condition

(During entry delay time)

Arming condition

(After alarming time has elapsed, arming

condition)

Alarming condition

After alarming time has elapsed, arming

condition

CHANGING METHOD OF PASSIVE MODE (ON or OFF)

Using a hand–held tester, the mode can be changed to the pas-
sive mode.

ECU TERMINAL VALUES MEASUREMENT BY USING
LEXUS BREAK–OUT–BOX AND LEXUS HAND–HELD
TESTER

(a)

Hook up the LEXUS break–out–box and LEXUS hand–
held tester to the vehicle.

(b)

Read the ECU input/ output values by following the
prompts on the tester screen.

(c)

Please refer to the LEXUS hand–held tester has a ”Snap-
shot” function. This records the measured data and is ef-
fective in the diagnosis of intermittent problems.

Remove the ignition key from key cylinder.
All the doors, engine hood and luggage
compartment door are closed and unlocked.

Any of doors is locked and unlocked by turns
3 times by the key or remote control.

Driver’s side knob for door lock is locked and
unlocked 3 times.

Driver’s side door is opened.

The system starts force lock at once after 2
sec.

Driver’s side knob for door lock is unlocked.

Driver’s side door is closed and opened 2
times

Driver’s side knob for door lock is locked and
unlocked.

The system starts force lock at once after 2
secs.

PASSIVE MODE OFF

Driver’s side door is closed and opened 4
times

Driver’s side knob for door lock is locked and
unlocked.

The system starts force lock at once after 2
sec.

PASSIVE MODE ON

Within
30 sec.

Within
20 sec.

HINT:

Initial mode is PASSIVE MODE OFF.

If there is a different signal in the middle of changing. It is invalid.

Input to the vehicle

Output from the vehicle

BE–148

–

BODY ELECTRICAL

THEFT DETERRENT SYSTEM

2449

CHANGING METHOD OF PASSIVE MODE
(ON or OFF)

N09348

ECU

LEXUS hand–held tester

LEXUS Break–out–box

–

BODY ELECTRICAL

THEFT DETERRENT SYSTEM

BE–149

2450

ECU TERMINAL VALUES MEASUREMENT BY USING
LEXUS BREAK–OUT–BOX AND LEXUS HAND–HELD
TESTER

(a)

Hook up the LEXUS break–out–box and LEXUS hand–
held tester to the vehicle.

(b)

Read the ECU input/ output values by following the
prompts on the tester screen.

(c)

Please refer to the LEXUS hand–held tester has a ”Snap-
shot” function. This records the measured data and is ef-
fective in the diagnosis of intermittent problems.

BE0GR–04

I04055

I04146

I04147

Not turned

UNLOCK

I04148

OFF

BE–150

–

BODY ELECTRICAL

THEFT DETERRENT SYSTEM

2451

INSPECTION

INSPECT THEFT DETERRENT INDICATOR LIGHT OP-
ERATION

Connect the positive (+) lead from the battery terminal 2 and
negative (–) lead to terminal 5, and check that the warning light
lights up.
If operation is not as specified, replace the light control rheostat.
2.

INSPECT THEFT DETERRENT INDICATOR LIGHT
CIRCUIT
(See page

DI–808

)

INSPECT THEFT DETERRENT HORN OPERATION

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

INSPECT THEFT DETERRENT HORN CIRCUIT
(See page

DI–804

)

INSPECT LUGGAGE COMPARTMENT DOOR KEY
LOCK AND UNLOCK SWITCH CONTINUITY

Switch position

Tester connection

Specified condition

Not turned

–

No continuity

UNLOCK

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