Lexus ES300 (2002 year). Service manual — part 92

BODY ELECTRICAL – ACCESSORIES

BE-51

211BE35

Security Horn

Engine Hood
Courtesy Switch

Vehicle Horn

Body ECU

Key Unlock
Warning Switch

Theft Deterrent
ECU

Security
Indicator Light

Door Lock Assembly

Motor and Position

Switch

Courtesy Switch

Luggage Door Lock Assembly

Motor and Courtesy Switch

2. Layout of Main Component

BODY ELECTRICAL – ACCESSORIES

BE-52

187BE40

Condition (3)

Condition (5)

Condition (6)

Condition (5)

Disarmed State

Condition (1)

Armed Preparation State

Condition (2)

Armed State

Condition (4)

Alarm State

3. System Operation

Basic Operation

This system activates as described in the diagram below when one of items place in the respective state.

Condition

Item

Condition (1)

There is no ignition key in the ignition key cylinder.

When the doors, engine food, and luggage door are all closed, the transmitter is

used to lock all doors.

When the doors, engine food, and luggage door are all closed, the key is use to

lock all doors.

Condition (2)

When the doors, engine hood, and luggage door are all closed and locked, and 30
seconds have elapsed.

Condition (3)

When one of the doors, engine hood, or luggage door is changed from “close”

to “open”.

When one of the doors, engine hood, or luggage door is changed from “lock” to

“unlock”.

When the ignition key is inserted in the ignition key cylinder.

When a terminal is disconnected from the battery and reconnected.

Condition (4)

Any door, engine hood, or luggage door is opened.

Any door is unlocked with something other than the ignition key or transmitter.

The engine hood is opened.

A terminal is disconnected from the battery and reconnected.

The wiring harness is directly connected as if the turn the ignition switch ON.

Condition (5)

The transmitter is used to unlock the doors.

The key is inserted in the ignition key cylinder and the ignition switch is turned

ON.

When the key is available, and the engine immobiliser is canceled by turning the

ignition switch ON.

BODY ELECTRICAL – ACCESSORIES

BE-53

Forced Door Lock Operation

When the system starts the alarm state, and one of the doors is subsequently unlocked, the forced door lock
operation forcefully outputs a door lock signal to prevent intrusion into the vehicle. This operation becomes
activated when all the starting conditions listed below have been met, and stops when one of the stopping
conditions occurs.

Condition

Item

The theft deterrent system is in the alarm state.

Starting Condition

There is no key inserted in the ignition key cylinder.

g

If one of the doors is unlocked.

All doors are locked.

Stopping Condition

The warning ends.

pp g

The key is inserted in the ignition key cylinder.

Alarm Memory Operation

When the driver returns to the vehicle and cancels the theft deterrent system, this function illuminates the
taillights for 2 seconds to inform the driver that the theft deterrent system had been tripped and was in the
alarm state.

BODY ELECTRICAL – WIPER SYSTEM

BE-19

209BE03

Rain Sensor

Wiper
Controller

Combination
Switch

Wiper Motor

211BE17

Wiper Motor

Combination Switch

Wiper and Washer Switch

Rain
Sensor

Wiper Controller

WIPER SYSTEM

RAINDROP SENSING FUNCTION

1. General

When the wiper switch is in the AUTO position, this function uses a rain sensor that is mounted on the front
windshield glass to detect the amount of raindrops, and controls an optimal wiping timing accordingly.

System Diagram

2. Layout of Main Component