Lexus RX300 (MCU15). Manual — part 361

I03223

P6
Power Window Switch

DOWN

MDN

10

21

22

24

23

L–O

BR–W

Y

Y–G

R–W

UP

AUTO

PCTO

PWE

AUTO

MUP

Rear Right Door ECU

3

2

4

6

5

R16

R16

R16

R16

R16

DI–674

–

DIAGNOSTICS

REAR RIGHT DOOR CONTROL SYSTEM

LEXUS RX300 (RM785E)

Power window switch circuit

CIRCUIT DESCRIPTION

Power window switch circuit can be checked using DTC check (Refer to DI–708).

WIRING DIAGRAM

DI2FN–06

–

DIAGNOSTICS

REAR RIGHT DOOR CONTROL SYSTEM

DI–675

LEXUS RX300 (RM785E)

INSPECTION PROCEDURE

1

Check the power window switch circuit using DTC check (See page DI–708).

OK

Proceed to next circuit inspection shown on
problem symptoms table (See page DI–664).

OK

2

Check the power window switch (See page BE–84).

NG

Replace the power window switch.

OK

3

Check wireharness and connector between power window switch and rear right
door ECU.

NG

Repair or replace wireharness or connector.

OK

4

Check wireharness and connector between power window switch and power
window master switch.

NG

Repair or replace wireharness or connector.

OK

Proceed to next circuit inspection shown on
problem symptoms table
(See page DI–664).

DI2AT–11

Customer Problem Analysis

Problem Symptom Confirmation

Symptom Simulation

Problem does not
occur

Check DTC (Pre–check)

Normal code

Problem Symptoms Table

Identification of Problem

Repair

Confirmation Test

End

Titles inside

are titles of pages in this

manual, with the page number indicated in
the bottom portion. See the indicated pages
for detailed explanations.

1

2

3

4

6

8

P. IN–22

*

P.DI–677

P. DI–678

Malfunction code

Problem
occurs

Circuit Inspection

P. DI–688

See page

Engine

Body control system

Passenger door system

Rear right door system

Air conditioning system

Combination meter system

Sliding roof system

System

Rear left door system

DI–21

DI–570

DI–602

DI–624

DI–664

DI–812

DI–539

DI–557

Step 4, 8 : Diagnostic steps permitting the use of the
hand–held tester.

*:

5

7

DI–647

Driver door system

Vehicle Brought to Workshop

Navigation system

DI–726

DI–676

–

DIAGNOSTICS

MULTIPLEX COMMUNICATION SYSTEM

LEXUS RX300 (RM785E)

MULTIPLEX COMMUNICATION SYSTEM

HOW TO PROCEED WITH TROUBLESHOOTING

Perform troubleshooting in accordance with the procedure on the following page.

DI2AU–11

MULTIPLEX COMMUNICATION SYSTEM Check Sheet

Inspector’s name:

Customer’s Name

Date Vehicle

Registration No.

Registration Year

Frame No.

Odometer Reading

/ /

km
Mile

Weather Conditions
When Problem
Occurred

Date Problem First Occurred

Frequency Problem Occurs

Weather

/ /

"" Once only

Brought in

"" Engine

Malfunction
System

Outdoor Temperature

"" Fine "" Cloudy ""Rainy ""Snowy
"" Various/ Others

"" Hot ""Warm "" Cool
"" Cold (Approx. °F ( °C))

"" Constant "" Sometimes ( times per day, month)

"" Body Control System

"" Passenger Door System

"" Driver Door System

"" Rear Right Door System

"" Rear Left Door System

"" Air Conditioning System

"" Combination Meter System

"" Sliding Roof System

–

DIAGNOSTICS

MULTIPLEX COMMUNICATION SYSTEM

DI–677

LEXUS RX300 (RM785E)

CUSTOMER PROBLEM ANALYSIS CHECK