Lexus RX300 (MCU15). Service manual - part 355

DI–652

–

DIAGNOSTICS

REAR LEFT DOOR CONTROL SYSTEM

LEXUS RX300   (RM785E)

INSPECTION PROCEDURE

1

Check door lock motor (See page BE–97).

NG

Replace the door lock motor.

OK

2

Check wireharness and connector between door lock motor and rear left door
ECU.

NG

Repair or replace wireharness or connector.

OK

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

I03215

D9 Door Lock Motor
and Door Unlock
Detection Switch

Rear Left Door ECU

LSWE

A–

A+

LSW

17

13

1

19

2

3

6

4

GR–R

L–B

L–R

GR

R14

R14

R14

R14

–

DIAGNOSTICS

REAR LEFT DOOR CONTROL SYSTEM

DI–653

LEXUS RX300   (RM785E)

Door unlock detection 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

DI2FE–06

DI–654

–

DIAGNOSTICS

REAR LEFT DOOR CONTROL SYSTEM

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 left door ECU.

NG

Repair or replace wireharness or connector.

OK

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

I08138

Door Courtesy
Switch Rear LH

Rear Left Door ECU

5

1

CTY

CTYE

8

18

R–W

R–B

R14

R14

–

DIAGNOSTICS

REAR LEFT DOOR CONTROL SYSTEM

DI–655

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

DI2FF–06