Lexus RX300 (MCU15). Manual — part 360

I03215

D10 Door Lock Motor
and Door Unlock
Detection Switch

19

L–B

Rear Right Door ECU

LSWE

A–

A+

LSW

1

13

17

GR–R

L–R

GR

2

3

6

4

R16

R16

R16

R16

DI–670

–

DIAGNOSTICS

REAR RIGHT DOOR CONTROL SYSTEM

LEXUS RX300 (RM785E)

Door unlock detectin switch

CIRCUIT DESCRIPTION

The door unlock detection switch is built in the door lock motor assembly. This switch is ON when the door
lock knob is in the unlock position and OFF when the lock knob is in the lock position. The ECU detects the
door lock knob conditions is this circuit. It is used as one of the operating conditions for the key confinement
prevention function.

WIRING DIAGRAM

DI2FL–06

–

DIAGNOSTICS

REAR RIGHT DOOR CONTROL SYSTEM

DI–671

LEXUS RX300 (RM785E)

INSPECTION PROCEDURE

1

Check door unlock detection switch (See page BE–97).

NG

Replace the door lock motor.

OK

2

Check wireharness and connector between door unlock detection switch and
rear right door ECU.

NG

Repair or replace wireharness or connector.

OK

Proceed to next circuit inspection shown on
problem symptoms table
(See page DI–570).

I08138

D10
Door Courtesy
Switch Rear RH

Rear Right Door ECU

2

1

CTY

CTYE

8

18

R–Y

R–B

R16

R16

DI–672

–

DIAGNOSTICS

REAR RIGHT DOOR CONTROL SYSTEM

LEXUS RX300 (RM785E)

Door courtesy switch circuit

CIRCUIT DESCRIPTION

The door courtesy switch turns on when the door is opened and turns off when door is closed.

WIRING DIAGRAM

DI2FM–06

–

DIAGNOSTICS

REAR RIGHT DOOR CONTROL SYSTEM

DI–673

LEXUS RX300 (RM785E)

INSPECTION PROCEDURE

1

Check door courtesy switch (See page BE–48).

NG

Replace the courtesy switch.

OK

2

Check wireharness and connector between courtesy light and rear right door
ECU, courtesy switch and rear right door ECU.

NG

Repair or replace wireharness or connector.

OK

Proceed to next circuit inspection shown on
problem symptoms table
(See page DI–570).