Lexus RX300 (MCU15). Manual — part 358

DI2FR–07

I03226

R17

R16

REAR RIGHT DOOR ECU

3

2

1

5

4

8

7

6

10

13

12

11

9

5

4

3

2

1

8

7

6

18

17

16

15

14

19

25

24

23

22

21

20

DI–662

–

DIAGNOSTICS

REAR RIGHT DOOR CONTROL SYSTEM

LEXUS RX300 (RM785E)

TERMINALS OF ECU

Symbols (Terminals No.)

Wiring Color

Condition

STD Voltage (V)

A– ↔ GND

L B ↔ W B

Door lock switch OFF or LOCK

Below 1.0

A ↔ GND

(R16–1 ↔ R16–25)

L–B ↔ W–B

Door lock switch UNLOCK

10 – 14

CTY ↔ GND

R Y ↔ W B

Rear RH door closed

10 – 14

CTY ↔ GND

(R16–8 ↔ R16–25)

R–Y ↔ W–B

Rear RH door open

Below 1.0

SIG ↔ GND

(R16–9 ↔ R16–25)

R–L ↔ W–B

Constant

10 – 14

PCTO ↔ GND

L O ↔ W B

Window lock switch UNLOCK*

10 – 14

PCTO ↔ GND

(R16–10 ↔ R16–25)

L–O ↔ W–B

Window lock switch LOCK*

Below 1.0

PCTI ↔ GND

L R ↔ W B

Window lock switch UNLOCK*

10 – 14

PCTI ↔ GND

(R16–11 ↔ R16–25)

L–R ↔ W–B

Window lock switch LOCK*

Below 1.0

A+ ↔ GND

L R ↔ W B

Door lock switch OFF or UNLOCK

Below 1.0

A+ ↔ GND

(R16–13 ↔ R16–25)

L–R ↔ W–B

Door lock switch LOCK

10 – 14

BDR ↔ GND

(R16–14 ↔ R16–25)

L–W ↔ W–B

Constant

10 – 14

CPUB ↔ GND

(R16–15 ↔ R16–25)

G–B ↔ W–B

Constant

10 – 14

LSW ↔ GND

GR ↔ W B

Rear LH door is locked

10 – 14

LSW ↔ GND

(R16–17 ↔ R16–25)

GR ↔ W–B

Rear LH door is unlocked

Below 1.0

AUTO ↔ GND

lgnition switch ON and power window switch OFF,UP or DOWN

Below 1.0

AUTO ↔ GND

(R16–22 ↔ R16–25)

Y ↔ W–B

lgnition switch ON and power window switch AUTO,UP

or DOWN

10 – 14

MDN ↔ GND

R W ↔ W B

lgnition switch ON and powr window switch OFF or UP

Below 1.0

MDN ↔ GND

(R16–23 ↔ R16–25)

R–W ↔ W–B

lgnition switch ON and powr window switch DOWN

10 – 14

MUP ↔ GND

Y G ↔ W B

lgnition switch ON and power window switch OFF or DOWN

Below 1.0

MUP ↔ GND

(R16–24 ↔ R16–25)

Y–G ↔ W–B

lgnition switch ON and power window switch UP

10 – 14

DN ↔ GND

G ↔ W B

lgnition switch ON and power window switch OFF or UP

Below 1.0

DN ↔ GND

(R17–1 ↔ R16–25)

G ↔ W–B

lgnition switch ON and power window switch DOWN

10 – 14

LMT ↔ GND

Y ↔ W B

Window fully – close position

10 – 14

LMT ↔ GND

(R17–2 ↔ R16–25)

Y ↔ W–B

Window except fully – close position

Below 1.0

–

DIAGNOSTICS

REAR RIGHT DOOR CONTROL SYSTEM

DI–663

LEXUS RX300 (RM785E)

UP ↔ GND

R ↔ W B

lgnition switch ON and power window switch OFF or DOWN

Below 1.0

UP ↔ GND

(R17–3 ↔ R16–25)

R ↔ W–B

lgnition switch ON and power window switch UP

10 – 14

During power window is operate

Pulse generation

PLS ↔ GND

(R17 7 ↔ R16 25)

L ↔ W–B

Power window is not operate with switch ON

Below 1.0

(R17–7 ↔ R16–25)

Power window is not operate with switch OFF

10 – 14

*: Power window master switch

DI2FP–01

DI–664

–

DIAGNOSTICS

REAR RIGHT DOOR CONTROL SYSTEM

LEXUS RX300 (RM785E)

PROBLEM SYMPTOMS TABLE

POWER WINDOW CONTROL SYSTEM:

Symptom

Suspect Area

See page

Power window does not operate.

3. Power window switch circuit

4. Power window motor circuit

5. Rear right door ECU

DI–674

BE–84

–

Auto up (or down) function does not operate.

1. Power window switch circuit

2. Rear right door ECU

DI–674

–

Jam protection function and auto up (or down) function does not

operate.

1. Jam protection limit switch circuit

2. Jam protection pulse switcj circuit

3. Rear right door ECU

BE–84

BE–84

–

OTHERS:

Symptom

Suspect Area

See page

Parts of the door does not function.

1. Power source circuit

2. Rear right door ECU

DI–665

–

DI2FJ–06

I19267

Rear Right
Door ECU

SIG

15

BDR

CPUB

1

BB1

4

2A

3

9

R15

R15

Engine Room J/B

W

ECU–B Short Pin

(*1)

G–B

14

R15

L–W

IM1

Instrument Panel J/B

1

11

R–L

R–L

R–L

BB1

IM1

Battery

GND

SEL1

13

W–B

25

20

BK

R15

R15

W–B

W–B

W–B

BB1

F11
FL Block

L–W

(*2)

1

IM2

L–W

ALT

W

1

3

5

W

1

2I

BB1

2

L–W
(*2)

(*1)
G–B

7

IM1

(*1)

7

IM2

(*2)

L–W
(*2)

(*1)
G–B

9

ID

7

ID

10

IG

7

IC

GAUGE

W–R

B–Y

IG1

4

AM1

2

6

IC

AM1

2

1

P RR DOOR

*1

D RR DOOR

*2

8

ID

1

IA

Ignition
SW

W–L

*1: LHD
*2: RHD

–

DIAGNOSTICS

REAR RIGHT DOOR CONTROL SYSTEM

DI–665

LEXUS RX300 (RM785E)

CIRCUIT INSPECTION

Power source circuit

CIRCUIT DESCRIPTION

This circuit provides power to operate the rear right door ECU.

WIRING DIAGRAM